CN115711166A - Electric heating type particle trap system and control method - Google Patents
Electric heating type particle trap system and control method Download PDFInfo
- Publication number
- CN115711166A CN115711166A CN202211419698.1A CN202211419698A CN115711166A CN 115711166 A CN115711166 A CN 115711166A CN 202211419698 A CN202211419698 A CN 202211419698A CN 115711166 A CN115711166 A CN 115711166A
- Authority
- CN
- China
- Prior art keywords
- air
- air inlet
- particle trap
- inlet pipeline
- throttle valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002245 particle Substances 0.000 title claims abstract description 220
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005485 electric heating Methods 0.000 title description 3
- 238000010438 heat treatment Methods 0.000 claims abstract description 91
- 230000008929 regeneration Effects 0.000 claims abstract description 32
- 238000011069 regeneration method Methods 0.000 claims abstract description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 50
- 229910052799 carbon Inorganic materials 0.000 claims description 50
- 238000011068 loading method Methods 0.000 claims description 37
- 239000003054 catalyst Substances 0.000 claims description 16
- 230000003584 silencer Effects 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 125
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 abstract description 8
- 239000001301 oxygen Substances 0.000 abstract description 8
- 230000001276 controlling effect Effects 0.000 description 34
- 230000009471 action Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 9
- 239000004071 soot Substances 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000010248 power generation Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Processes For Solid Components From Exhaust (AREA)
Abstract
The application discloses electrical heating formula particle trap system and control method, this system includes: an engine; an intake line assembly through which filtered air passes: the air inlet pipeline is connected with the air inlet of the engine; the tail gas emission assembly comprises a particle trap (GPF) with a first gas inlet connected with a gas outlet of the engine and a second gas inlet connected with a gas outlet of a second gas inlet pipeline; a heating assembly comprising a non-contact heating coil surrounding the GPF to which high-frequency alternating current is switched in for electromagnetic heating; the GPF is in a working state with a certain temperature through electromagnetic heating by high-frequency alternating current, the oxygen concentration in the GPF is guaranteed by controlling the gas flow of the gas inlet pipeline, and accordingly GPF regeneration is achieved to prolong the service life of an engine.
Description
Technical Field
The embodiment of the application relates to the technical field of vehicles, in particular to the technical field of particle traps, and specifically relates to an electric heating type particle trap system and a control method.
Background
In order to meet the national emission regulations, more and more Gasoline vehicles are equipped with a Particulate Filter GPF (Gasoline Particulate Filter) for filtering and collecting Particulate matters (such as soot particles or ash) in the exhaust gas of the Gasoline engine, thereby reducing the Particulate matter emission generated during the combustion of the Gasoline engine. However, as the vehicle travels, the carbon load in the GPF increases and the exhaust backpressure of the gasoline engine increases, resulting in reduced performance. It is therefore necessary to periodically burn off soot particles in the GPF (i.e., GPF regeneration) to ensure that the gasoline engine is operating properly.
In the prior art, an oxidation catalyst and a particle catcher are often adopted, the oxidation catalyst is used for purifying oxidation reaction to generate engine exhaust, and GPF intercepts, stores and burns particles in the exhaust period. In addition, the regeneration temperature required by the carbon deposit in the catalytic oxidation particle trap is high, the regeneration time is long, complete regeneration is difficult to realize, and meanwhile, the catalyst used for catalytically oxidizing the carbon deposit is short in service life and high in price, so that the cost of the whole tail gas treatment device is increased.
In order to solve the problems, the electrically heated particle trap and the control method are adopted in the invention, so that the GPF temperature is increased, the regeneration condition is quickened to be met, the fresh air flow is regulated, and the oxygen concentration in the GPF is ensured, thereby realizing GPF regeneration, prolonging the service life of an engine and bringing better driving experience to a vehicle driver.
Disclosure of Invention
The application discloses an electrical heating formula particle trap system and control method utilizes non-contact heating coil to carry out electromagnetic heating through inserting high frequency alternating current, can make GPF be in the operating condition of treating that has certain temperature to quick response granule regeneration, simultaneously, through the gas flow of control air inlet pipeline, adjusts fresh air mass flow, guarantees that the oxygen concentration in GPF is in reasonable scope, thereby realizes GPF regeneration, extension engine life.
An embodiment of one aspect of the invention provides a particle trap system, comprising:
an engine;
the air inlet pipeline assembly is used for passing filtered air and comprises a first air inlet pipeline and a second air inlet pipeline, and an air outlet of the first air inlet pipeline is connected with an air inlet of the engine;
the exhaust emission component comprises a particle trap, a first air inlet of the particle trap is connected with an air outlet of the engine, and a second air inlet of the particle trap is connected with an air outlet of the second air inlet pipeline;
the heating assembly comprises a non-contact heating coil surrounding the periphery of the particle catcher, and the non-contact heating coil is used for performing electromagnetic heating by accessing high-frequency alternating current;
the temperature sensor is positioned on the particle trap and used for detecting the temperature of the particle trap, the controller is used for controlling the heating component to be opened and closed according to the temperature of the particle trap, the gas flow sensor is positioned on the second gas inlet pipeline and used for detecting the flow of air entering the particle trap, and the controller is also used for adjusting the flow of gas of the second gas inlet pipeline according to the flow of air entering the particle trap.
Further, the particle trap system specifically includes: the first air filter, the first supercharger, the intercooler and the throttle valve are sequentially arranged along the air circulation direction of the first air inlet pipeline, and the throttle valve is positioned at an air inlet of the engine.
Further, an air inlet of the second air inlet pipeline is communicated with a pipeline between the first supercharger and the intercooler; or the air inlet of the second air inlet pipeline is communicated with a pipeline between the intercooler and the throttle valve.
Further, the particle trap system specifically includes: the air pump and the throttle valve are sequentially arranged in the air circulation direction of the second air inlet pipeline, the air flow sensor is located at the downstream position of the throttle valve, and the air pump and the throttle valve are respectively connected with the controller.
Furthermore, the second air inlet pipeline also comprises an air inlet branch, an air inlet of the air inlet branch is communicated with the second air inlet pipeline on the upstream of the air pump, an air outlet of the air inlet branch is communicated with the second air inlet pipeline between the air pump and the throttle valve, and a bypass valve is arranged on the air inlet branch and connected with the controller.
Further, the particle trap system specifically includes: the first pressure sensor and the second pressure sensor are respectively connected with the controller, the first pressure sensor is used for collecting first pressure of an air inlet of the second air inlet pipeline, the second pressure sensor is used for collecting second pressure of a second air inlet of the particle trap, and the controller is used for controlling opening and closing of the second air inlet pipeline and opening and closing of the air inlet branch according to the first pressure and the second pressure.
Optionally, the first air intake pipeline and the second air intake pipeline are separately arranged, and further comprising: the air pump and the throttle valve are respectively connected with the controller, and the gas flow sensor is positioned at the downstream position of the throttle valve.
Optionally, the exhaust emission assembly further comprises: the second supercharger is positioned at the air outlet of the engine, the three-way catalyst is positioned in a pipeline between the particle trap and the second supercharger, the silencer is positioned at the air outlet of the particle trap, and the air outlet of the second air inlet pipeline is communicated with the pipeline between the three-way catalyst and the particle trap.
Optionally, the heating assembly further comprises a high-frequency electronic oscillator and a direct-current power supply, wherein the high-frequency electronic oscillator is respectively connected with the direct-current power supply and the non-contact heating coil and is used for converting direct current output by the direct-current power supply into high-frequency alternating current and outputting the high-frequency alternating current to the non-contact heating coil.
An embodiment of another aspect of the present invention provides a method for controlling a particle trap, which is implemented based on the particle trap system of any one of the first aspect, and includes the following steps:
s1, starting to obtain the carbon loading capacity and the temperature of the particle trap and the gas flow of a second gas inlet pipe in real time;
s2, judging whether the carbon loading capacity is larger than a first preset carbon loading capacity, if so, executing S3, and if not, executing S4;
s3, judging whether the temperature is lower than a preset temperature, if so, executing S5, and if not, executing S6;
s4, the particle catcher is not regenerated;
s5, controlling the heating assembly to be opened to heat the particle catcher, returning to S3, and controlling the heating assembly to be closed before S6 is executed when the temperature is higher than the preset temperature;
s6, controlling an air pump and a throttle valve to be opened;
s7, adjusting the opening of the throttle valve according to the gas flow of the second air inlet pipeline;
s8, starting regeneration of the particle catcher;
s9, judging whether the carbon loading capacity is smaller than a second preset carbon loading capacity, if so, executing S10, and if not, returning to S8, wherein the second preset carbon loading capacity is smaller than the first preset carbon loading capacity;
and S10, stopping regenerating the particle trap, controlling the air pump and the throttle valve to be closed, and ending.
Optionally, the particle trap system further comprises a first pressure sensor and a second pressure sensor, the second air inlet line further comprises an air inlet branch, the air inlet branch is provided with a bypass valve, in the control method,
s1 further comprises: acquiring a first pressure acquired by a first pressure sensor and a second pressure acquired by a second pressure sensor;
after S5 and before S6, further comprising: s11, judging whether the first pressure is smaller than the second pressure, if so, executing S6, and if not, executing S12;
s12, controlling a throttle valve and a bypass valve to be opened; wherein S12 is located before S7;
if S12 and S10 are executed, the regeneration of the particle catcher is stopped, and the bypass valve and the throttle valve are controlled to be closed, and the operation is finished.
According to the electrically heated particulate trap system and control method provided by the present invention, the electrically heated particulate trap system includes an engine; the air inlet pipeline assembly is used for passing filtered air and comprises a first air inlet pipeline and a second air inlet pipeline, and an air outlet of the first air inlet pipeline is connected with an air inlet of the engine; the exhaust emission component comprises a particle trap, a first air inlet of the particle trap is connected with an air outlet of the engine, and a second air inlet of the particle trap is connected with an air outlet of the second air inlet pipeline; the heating assembly comprises a non-contact heating coil surrounding the periphery of the particle catcher, and the non-contact heating coil is used for performing electromagnetic heating by connecting high-frequency alternating current; the temperature sensor is positioned on the particle trap and used for detecting the temperature of the particle trap, the controller is used for controlling the heating component to be opened and closed according to the temperature of the particle trap, the gas flow sensor is positioned on the second gas inlet pipeline and used for detecting the flow of air entering the particle trap, and the controller is also used for adjusting the flow of gas of the second gas inlet pipeline according to the flow of air entering the particle trap. The system can make GPF in a working state to be at a certain temperature, can quickly respond, and meanwhile, regulates fresh air flow by controlling the air flow of an air pipeline, ensures the oxygen concentration in the GPF, realizes GPF regeneration and prolongs the service life of the engine. The statements in this section do not identify key or critical features of the embodiments of the present invention, nor do they limit the scope of the present invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, without making creative efforts, other drawings may be obtained according to the drawings, and do not constitute a limitation to the present application. Wherein:
FIG. 1 is a schematic diagram of an electrically heated particulate trap system provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of control circuit connections for the electrically heated particulate trap system provided in accordance with FIG. 1;
FIG. 3 is a schematic diagram of an electrically heated particulate trap system provided in accordance with another embodiment of the present invention;
FIG. 4 is a schematic diagram of an electrically heated particulate trap system provided in accordance with yet another embodiment of the present invention;
FIG. 5 is a flow chart of a method of controlling an electrically heated particulate trap provided in accordance with one embodiment of the present invention;
fig. 6 is a flow chart of a method of controlling an electrically heated particulate trap, according to another embodiment of the present invention.
Wherein, 1 is an engine; 2-a throttle valve; 3, an intercooler; 4-a first air filter; 5-a first supercharger; 6-a three-way catalyst; 7-a particle trap; 8, a silencer; 9-air pump; 10-a throttle valve; 11-a gas flow sensor; 12-a temperature sensor; 13-a non-contact heating coil; 14-a high frequency electronic oscillator; 15-a direct current power supply; 16-a bypass valve; 17-a first pressure sensor; 18-a second pressure sensor; 19-a second air filter.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic structural diagram of an electrically heated particle trap system, which may be used in an automotive particle trap system, according to an embodiment of the present invention, and specifically includes:
an engine;
the air inlet pipeline assembly is used for passing filtered air and comprises a first air inlet pipeline and a second air inlet pipeline, and an air outlet of the first air inlet pipeline is connected with an air inlet of the engine;
the exhaust emission component comprises a particle trap, a first air inlet of the particle trap is connected with an air outlet of the engine, and a second air inlet of the particle trap is connected with an air outlet of the second air inlet pipeline;
the heating assembly comprises a non-contact heating coil surrounding the periphery of the particle catcher, and the non-contact heating coil is used for performing electromagnetic heating by connecting high-frequency alternating current;
the temperature sensor is positioned on the particle trap and used for detecting the temperature of the particle trap, the controller is used for controlling the heating component to be opened and closed according to the temperature of the particle trap, the gas flow sensor is positioned on the second gas inlet pipeline and used for detecting the flow of air entering the particle trap, and the controller is also used for adjusting the flow of gas of the second gas inlet pipeline according to the flow of air entering the particle trap.
The engine comprises but is not limited to a mechanical supercharged engine, a turbocharged engine and other fuel engines, the particulate trap is used for filtering and collecting particulate matters (such as soot particles or ash) in exhaust gas of the fuel engines, an air inlet end is respectively connected with an air outlet of the engine and an air outlet of a second air inlet pipeline for conveying filtered air, a non-contact heating coil in a heating assembly is different from other heating devices such as a heating resistor, the induction heating effect is superposed by two parts, one part is eddy current heating caused by material resistivity, and the other part is hysteresis heating caused by alternating current passing through a coil to generate an alternating magnetic field, so that the high-efficiency and quick heating can be realized; temperature sensors for detecting the temperature of the particle trap, including but not limited to temperature sensing elements such as thermocouple sensors, thermistor sensors, integrated analog temperature sensors, digital output sensors, and the like; gas flow sensors for sensing air flow into the particle trap, including but not limited to throttle-type gas flow sensors, positive displacement gas flow sensors, encoder-type sensors, and the like, it is noted that the specific operation of the controller is explained below in conjunction with FIG. 2.
An air inlet and an air outlet of the engine 1 are respectively connected with an air outlet of a first air inlet pipeline and a first air inlet of a particle trap 7 in an exhaust emission component, an air outlet of a second air inlet pipeline provided with an air flow sensor 11 is connected with a second air inlet of the particle trap 7 provided with a non-contact heating coil 13 for changing temperature and a temperature sensor 12 for detecting temperature, it can be understood that filtered air is conveyed to the engine through the first air inlet pipeline, is mixed with particulate matters such as soot particles or ash after participating in power generation, reaches the particle trap 7 through the air outlet of the engine 1 and the first air inlet of the particle trap 7, meanwhile, the filtered air is conveyed to the particle trap 7 through the second air inlet of the particle trap 7 through the second air inlet pipeline, and a controller changes the working state of the non-contact heating coil 13 according to the temperature of the particle trap detected by the temperature sensor 12, regulates and controls the air flow entering the particle trap 7 according to the air flow entering the particle trap 7, so as to provide enough heat and oxygen for the particle trap to meet regeneration conditions of the particle trap, thereby avoiding backpressure and tail gas emission problems of an exhaust system with reduced power and finally meeting national emission requirements.
Further, the particle trap system specifically includes: the air conditioner comprises a first air filter 4, a first supercharger 5, an intercooler 3 and a throttle valve 2 which are sequentially arranged along the air circulation direction of a first air inlet pipeline, wherein the throttle valve 2 is positioned at an air inlet of an engine.
The air filter is equipment which collects dust from gas-solid two-phase flow through the action of porous filter materials and purifies gas, and clean air which meets the process requirements after purification treatment is sent to an engine to ensure the air cleanliness in the engine, and the air filter comprises but is not limited to a dry air filter and/or a wet air filter; superchargers, including but not limited to exhaust gas turbochargers, mechanical turbochargers, and electrically assisted turbochargers, are used to compress air to increase the density of the air so that more air fills the cylinders, thereby increasing engine power; the intercooler is a matched device of the supercharger, the temperature of the gas can be improved through the heat conduction of the supercharger, and the intercooler 3 can be cooled by a water cooling type or an air cooling type; the throttle valve 2 is a throttle valve for controlling the intake air amount of the engine; the first air filter 4 and the first supercharger 5 are arranged at an air inlet of the first air inlet pipeline according to the air inlet direction, the intercooler 3 is arranged between the first supercharger 5 and an air outlet in the first air inlet pipeline, and the throttle valve 2 is arranged at the air inlet of the engine 1, namely the air outlet of the first air inlet pipeline.
It can be understood that clean air meeting the process requirements after being purified by the first air filter 4 enters the first air inlet pipeline under the action of the first supercharger 5, the controller opens the throttle valve 2, and the filtered air enters the engine to participate in the reaction and provide power.
Further, as shown in fig. 1, the intake port of the second intake pipe communicates with a pipe between the first supercharger 5 and the intercooler 3.
It will be appreciated that the same air flowing through the second inlet line as the intercooler 3 is cleaned by the first air filter.
Further, the particle trap system specifically includes: and the air pump 9 and the throttle valve 10 are sequentially arranged along the air circulation direction of the second air inlet pipeline, the air flow sensor 11 is positioned at the downstream position of the throttle valve 10, and the air pump 9 and the throttle valve 10 are respectively connected with the controller.
The air pump is used for pumping the air of the first air inlet pipeline into the second air inlet pipeline, the throttle valve is used for controlling the flow of the air flowing into the particle trap from the second air inlet pipeline, the air flow sensor 11 is located at the downstream position of the throttle valve and is close to the second air inlet of the particle trap, the acquired data are more accurate, and the controller is used for controlling the air pump and the throttle valve respectively according to the detected data.
Illustratively, when the air pump 9 assists the air of the first intake line to enter the second intake line, the controller adjusts the throttle valve 10 to control the air flow in the second intake line according to the detected data, and is monitored by the air flow sensor 11.
Further, the second air inlet pipeline also comprises an air inlet branch, an air inlet of the air inlet branch is communicated with the second air inlet pipeline on the upstream of the air pump 9, an air outlet of the air inlet branch is communicated with the second air inlet pipeline between the air pump 9 and the throttle valve 10, a bypass valve 16 is arranged on the air inlet branch, and the bypass valve 16 is connected with the controller.
It will be appreciated that the provision of the inlet branch as an inlet path for the particle trap adds options, the bypass valve 16 being connected in parallel with the air pump 9, which may also not take part in the inlet of the second inlet line.
Illustratively, when the engine is in a low performance operating state such as a large load, high pressure gas is generated, the controller turns off the air pump 9 while opening the bypass valve 16 and the throttle valve 10, gas enters the second intake line, and the controller adjusts the throttle valve 10 under the monitoring of the gas flow sensor 11 to change the gas flow rate of the second intake line, thereby regulating the intake air amount of the particulate trap 7.
Further, the particle trap system specifically includes: the first pressure sensor 17 and the second pressure sensor 18 are respectively connected with the controller, the first pressure sensor 17 is used for acquiring first pressure of an air inlet of the second air inlet pipeline, the second pressure sensor 18 is used for acquiring second pressure of a second air inlet of the particle trap 7, and the controller is used for controlling opening and closing of the second air inlet pipeline and opening and closing of the air inlet branch according to the first pressure and the second pressure.
It can be understood that when the first pressure sensor 17 acquires that the first pressure of the air inlet of the second air inlet pipeline is lower than the second pressure of the second air inlet of the particle trap 7 acquired by the second pressure sensor 18, the air entering the second air inlet pipeline is blocked and needs the air pump 9 for assistance, the controller closes the bypass valve 16 and simultaneously opens the air pump 9 and the throttle valve 10, the air is pumped into the second air inlet pipeline by the air pump 9, and the controller adjusts the throttle valve 10 under the monitoring of the air flow sensor 13 to increase the air flow of the second air inlet pipeline, so as to increase the air intake amount of the particle trap 7; when the first pressure of the air inlet of the second air inlet pipeline collected by the first pressure sensor 17 is not less than the second pressure of the second air inlet of the particle trap 7 collected by the second pressure sensor 18, the gas can smoothly enter the second air inlet pipeline without the assistance of the air pump 9, the controller closes the air pump 9 and simultaneously opens the bypass valve 16 and the throttle valve 10, the gas enters the second air inlet pipeline, the controller adjusts the throttle valve 10 under the monitoring of the gas flow sensor 13 to change the gas flow of the second air inlet pipeline, and therefore the air inflow of the particle trap 7 is regulated. It should be noted that the presence of the bypass valve 16 can also protect the air pump 9 from excessive pressure difference between the first pressure and the second pressure, which may cause suck-back and damage to the air pump. When the first pressure is higher than the second pressure, the air inlet branch can release the pressure of the first air inlet pipeline.
Illustratively, when the engine is in a high performance operating state such as a light load, low pressure gas is generated, the pressure sensor detects that the first pressure is less than the second pressure, the controller closes the bypass valve 16 while opening the air pump 9 and the throttle valve 10, gas enters the second intake line, and the controller adjusts the throttle valve 10 under the detection of the gas flow sensor 13 to change the gas flow rate of the second intake line, thereby regulating the intake air amount of the particulate trap 7. When the engine is in a low-performance working state such as a heavy load, high-pressure gas is generated, the pressure sensor detects that the first pressure is not less than the second pressure, the controller closes the air pump 9 and simultaneously opens the bypass valve 16 and the throttle valve 10, a large amount of gas enters the second air inlet pipeline, the controller adjusts the throttle valve 10 under the monitoring of the gas flow sensor 13, the gas flow of the second air inlet pipeline is changed, and therefore the air inflow of the particle trap 7 is adjusted.
Fig. 2 is a schematic diagram of control circuit connections for the electrically heated particulate trap system of fig. 1, and an electrically heated particulate trap system according to an embodiment of the present invention may be described with reference to fig. 1 and 2. The control circuit can be used for a particle catcher system of an automobile, and specifically comprises:
the controller, as an electronic engine control unit, may be a variety of general and/or special purpose processing components having processing and computing capabilities, including, but not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, or the like. The controller is respectively connected with a first pressure sensor 17, a temperature sensor 12, a gas flow sensor 11, a second pressure sensor 18, a bypass valve 16, an air pump 9, a throttle valve 10 and a high-frequency electronic oscillator 14, collects temperature data of the particle trap collected by the temperature sensor 12, air flow data of the particle trap collected by the gas flow sensor 11, first pressure of an air inlet of a second air inlet pipeline and second pressure data of a second air inlet of the particle trap collected by the first pressure sensor 17 and the second pressure sensor 18 in real time, and controls corresponding devices by combining the data, and specifically comprises the following steps:
the controller controls the high-frequency electronic oscillator 14 in the heating assembly to be turned on and off according to the temperature of the particle catcher, which is acquired by the temperature sensor 12, so as to heat the particle catcher, namely when the temperature of the particle catcher is lower than the preset temperature, the controller turns on the high-frequency electronic oscillator 14 to convert direct current into alternating current, the non-contact heating coil heats the particle catcher, the temperature is raised to the preset temperature, if the temperature of the particle catcher is higher than the preset temperature, the controller turns off the high-frequency electronic oscillator 14, and the non-contact heating coil stops heating the particle catcher; when the temperature of the particle catcher is not lower than the preset temperature, the high-frequency electronic oscillator 14 is turned off or kept in a turned-off state without heating the particle catcher.
The controller controls the bypass valve 16, the air pump 9 and the throttle valve 10 to process the tail gas according to the temperature of the particle catcher acquired by the temperature sensor 12, namely when the temperature of the particle catcher is not lower than the preset temperature, the controller opens the throttle valve 10 and the bypass valve 16 or opens the throttle valve 10 and the air pump 9 to adjust and process the tail gas.
The controller is also used for controlling the bypass valve 16, the air pump 9 and the throttle valve 10 to open or close and adjusting the opening of the throttle valve 10 according to the air flow data of the particle trap acquired by the air flow sensor 11, controlling the opening and closing of the second air inlet pipeline and the opening and closing of the air inlet branch, and regulating and controlling the air flow of the second air inlet pipeline.
The controller is further configured to control opening and closing of the second air intake pipeline and opening and closing of the air intake branch according to the first pressure of the air intake of the second air intake pipeline and the second pressure data of the second air intake of the particulate trap, which are respectively acquired by the first pressure sensor 17 and the second pressure sensor 18. When the first pressure sensor 17 acquires that the first pressure of the air inlet of the second air inlet pipeline is smaller than the second pressure, the air is blocked from entering the second air inlet pipeline and needs to be assisted by the air pump 9, the controller closes the bypass valve 16 and simultaneously opens the air pump 9 and the throttle valve 10, the air is pumped into the second air inlet pipeline by the air pump 9, the controller adjusts the throttle valve 10 under the monitoring of the air flow sensor 11, the air flow of the second air inlet pipeline is increased, and therefore the air inflow of the particle trap 7 is increased; when the first pressure sensor 17 acquires that the first pressure of the air inlet of the second air inlet pipeline is not less than the second pressure acquired by the second pressure sensor 18 at the second air inlet of the particle trap 7, the gas can smoothly enter the second air inlet pipeline without the assistance of the air pump 9, the controller closes the air pump 9 and simultaneously opens the bypass valve 16 and the throttle valve 10, the gas passes through the second air inlet pipeline through the air inlet branch, and the controller adjusts the throttle valve 10 under the monitoring of the gas flow sensor 13 to change the gas flow of the second air inlet pipeline, so that the air inflow of the particle trap 7 is regulated.
Referring to fig. 1 and 2, after being purified by a first air filter 4, air enters a first air inlet pipeline under the action of a first supercharger 5, a part of air is cooled by an intercooler 3 and then is conveyed to an engine 1, and is mixed with particulate matters such as soot particles or ash after participating in power generation, the mixture reaches a particulate trap 7 through an air outlet of the engine and a first air inlet of the particulate trap 7, the other part of air enters a second air inlet pipeline, when a first pressure is smaller than a second pressure, a controller closes a bypass valve 16 and simultaneously opens an air pump 9 and a throttle valve 10, the air is pumped to the particulate trap 7 through the second air inlet pipeline under the action of the air pump 9, or when the first pressure is not smaller than the second pressure, the controller closes the air pump 9 and simultaneously opens the bypass valve 16 and the throttle valve 10, the air passes through the second air inlet pipeline through an air inlet branch, the air enters the second air inlet pipeline and reaches the particulate trap 7, and simultaneously the controller changes the working state of a heating assembly according to collected data, so as to provide enough heat and oxygen for the particulate trap 7 to meet regeneration conditions of the particulate trap, thereby avoiding the working state of the particulate trap, the exhaust gas emission, and the tail gas emission of the tail gas emission system is further to meet the national emission requirements of the national emission regulations.
According to an aspect of the present invention, there is provided an electrically heated particle trap system, and fig. 3 is a schematic structural view of an electrically heated particle trap system according to another embodiment of the present invention, and referring to fig. 3, the electrically heated particle trap system specifically includes: the engine comprises an engine 1, a throttle valve 2, an intercooler 3, a first air filter 4, a first supercharger 5, a three-way catalyst 6, a particulate trap, a muffler 8, a first pressure sensor 17, a bypass valve 16, an air pump 9, a throttle valve 10, an air flow sensor 11, a second pressure sensor 18, a temperature sensor 12, a non-contact heating coil 13, a high-frequency electronic oscillator 14 and a direct-current power supply 15.
Wherein the air inlet of the second air inlet pipeline is communicated with a pipeline between the intercooler 3 and the throttle valve 2. An air inlet of the engine 1 is provided with a throttle valve, an air inlet and an air outlet of the engine 1 are respectively connected with an air outlet of a first air inlet pipeline and a first air inlet of a particle trap 7 in an exhaust emission component, an air inlet of the first air inlet pipeline is provided with a first air filter 4 and a first supercharger 5 according to an air inlet direction, an intercooler 3 is arranged in the first air inlet pipeline, an air inlet and an air outlet of a second air inlet pipeline are respectively connected with a second air inlet of the particle trap 7 in the first air inlet pipeline and the exhaust emission component, an air inlet of the second air inlet pipeline is positioned between the intercooler 3 and the throttle valve 2, an air pump 9 and a throttle valve 10 are sequentially arranged in an air circulation direction on the second air inlet pipeline, an air flow sensor 11 is positioned at a downstream position of the throttle valve 10, a bypass valve 16 connected with the air pump in parallel is additionally arranged to be an air inlet branch, the first air inlet and the second air inlet of the particle trap 7 are respectively connected with the air outlet of the first air inlet pipeline and the air outlet of the second air inlet pipeline, and an air outlet of the particle trap 7 is connected with a silencer 8.
It can be understood that after being purified by the first air filter 4, the air enters the first air inlet pipeline under the action of the first supercharger 5, and after being cooled by the intercooler 3, a part of the air is delivered to the engine 1, and after participating in power generation, the air is mixed with particulate matters such as soot particles or ash, and then reaches the particulate trap 7 through the air outlet of the engine and the first air inlet of the particulate trap 7, and the other part of the air enters the second air inlet pipeline, when the first pressure is smaller than the second pressure, the controller closes the bypass valve 16 and simultaneously opens the air pump 9 and the throttle valve 10, and the air is pumped to the particulate trap 7 through the second air inlet pipeline under the action of the air pump 9, or when the first pressure is not smaller than the second pressure, the controller closes the air pump 9 and simultaneously opens the bypass valve 16 and the throttle valve 10, the air passes through the second air inlet pipeline through the air inlet branch pipeline, and then enters the second air inlet pipeline to the particulate trap 7, and simultaneously the operating state of the heating assembly is changed according to the collected data, that the high-frequency electronic controller is started to convert the direct current provided by the direct current power supply to alternating current power supply to the alternating magnetic field, thereby satisfying the requirement of the particulate trap 7, and satisfying the national exhaust gas exhaust emission requirement, and the national exhaust emission requirement of the exhaust gas emission system, thereby avoiding the emission.
It should be noted that, in the embodiment of the present invention, the air purified by the first air filter 4 passes through the intercooler 3 and then enters the engine 1 and the second air intake pipeline respectively, and the cooled air passes through the second air intake pipeline and/or the air intake branch and enters the particulate trap 7, so as to avoid the influence of the high temperature air compressed by the first supercharger on the bypass valve 16 disposed in the air intake branch, the air pump 9 disposed in the second air intake pipeline, the throttle valve 10, and the gas flow sensor 11, such as deformation and aging caused by high temperature and shortening of service life, and meanwhile, the reduction of the gas temperature is beneficial to improving the engine efficiency.
Optionally, the first air intake pipeline and the second air intake pipeline are separately disposed, and specifically, the method further includes: and the second air filter 19, the air pump 9 and the throttle valve 10 are sequentially arranged along the air circulation direction of the second air inlet pipeline, the air pump 9 and the throttle valve 10 are respectively connected with the controller, and the gas flow sensor 11 is positioned at the downstream position of the throttle valve 10.
Fig. 4 is a schematic diagram of an electrically heated particulate trap system provided in accordance with yet another embodiment of the present invention, with reference to fig. 4.
It can be understood that the air enters the first air inlet pipeline under the action of the first supercharger 5 after being purified by the first air filter 4, the air is cooled by the intercooler 3, and then all the air is delivered to the engine 1, and after participating in generating power, the air is mixed with particulate matters such as soot particles or ash, and then the mixture reaches the particulate trap 7 through the air outlet of the engine and the first air inlet of the particulate trap 7, and at the same time, the air enters the second air inlet pipeline after being purified by the second air filter 19, and when the first pressure is smaller than the second pressure, the controller closes the bypass valve 16 and opens the air pump 9 and the throttle valve 10 at the same time, and when the first pressure is not smaller than the second pressure, the controller closes the air pump 9 and opens the bypass valve 16 and the throttle valve 10 at the same time, the air passes through the second air inlet pipeline via the air inlet branch pipeline, and the air enters the second air inlet pipeline and reaches the particulate trap 7, and at the same time, the controller changes the working state of the heating element according to the collected data, that the controller starts the direct current electric oscillator 15 to convert the direct current into the alternating current, so that the back pressure is in the non-contact magnetic field, and the non-magnetic field of the exhaust gas, and the particulate trap 7 provides sufficient heat for the particulate trap 8, thereby avoiding the exhaust emission of the particulate trap 8, and the exhaust emission requirement of the exhaust emission, and the particulate trap 8, and the emission requirement of the exhaust emission regulation, and the exhaust emission, and the particulate trap 8, thereby avoiding the emission.
It is worth to be noted that the first air inlet pipeline and the second air inlet pipeline are separately arranged, so that on one hand, the pressure of the first air inlet pipeline can be reduced, the loss of devices can be reduced, and the service life of the devices can be prolonged; on the other hand, be convenient for detect respectively and control first air inlet pipeline and second air inlet pipeline, reduce the influence each other between the pipeline, the air that can directly avoid getting into by the external air feed if the second air inlet pipeline carries a large amount of heats to produce the influence to the particle trap, reduces the gas of intercooler in the first air inlet pipeline simultaneously, alleviates the burden of intercooler, helps the promotion of particle trap efficiency and intercooler life's extension.
Optionally, the exhaust emission assembly further comprises: the device comprises a second supercharger, a three-way catalyst 6 and a silencer 8, wherein the second supercharger is positioned at an air outlet of the engine 1, the three-way catalyst 6 is positioned in a pipeline between the particle trap 7 and the second supercharger, the silencer 8 is positioned at an air outlet of the particle trap 7, and an air outlet of a second air inlet pipeline is communicated with a pipeline between the three-way catalyst 6 and the particle trap 7.
Wherein, the second booster is for the device supporting with first booster, and the three way catalyst converter adsorbs and changes the catalyst converter to emission standard for adopting physics and/or chemical mode to granule in the tail gas, and the three way catalyst converter is arranged in the pipeline between particle trap and the second booster, can handle through the particle trap after the gaseous intensive mixing of first air inlet pipeline and second air inlet pipeline, and the silencer is used for reducing exhaust emission volume, and the noise abatement brings good experience for user and pedestrian.
Optionally, the heating assembly further comprises a high-frequency electronic oscillator 14 and a direct-current power supply 15, and the high-frequency electronic oscillator 14 is connected to the direct-current power supply 15 and the non-contact heating coil 13, respectively, and is used for converting direct current output by the direct-current power supply 15 into high-frequency alternating current and outputting the high-frequency alternating current to the non-contact heating coil.
In the heating assembly, a high-frequency electronic oscillator 14 converts direct current provided by a direct current power supply 15 into alternating current, a non-contact heating coil 13 in an alternating magnetic field provides enough heat and oxygen for the particle catcher 7 to meet regeneration conditions of the particle catcher so as to influence the working state of the particle catcher, and unlike other heating devices such as a heating resistor, the non-contact heating coil in the heating assembly has the effect of induction heating which is superposed by two parts, wherein one part is eddy current heating caused by material resistivity, and the other part is hysteresis heating caused by the alternating current passing through the coil to generate the alternating magnetic field, so that the high-efficiency and quick heating can be realized; temperature sensors for detecting the temperature of the particle trap, including but not limited to temperature sensing elements such as thermocouple sensors, thermistor sensors, integrated analog temperature sensors, digital output sensors, and the like; gas flow sensors for detecting air flow into the particle trap include, but are not limited to, throttle-type gas flow sensors, positive displacement gas flow sensors, encoder-type sensors, and the like.
Fig. 5 is a flow chart of a control method of an electrically heated particle trap provided according to an embodiment of the present invention, the method being implemented based on any one of the particle trap systems described above, fig. 1 is a schematic structural diagram of the electrically heated particle trap system provided according to an embodiment of the present invention, and referring to fig. 1 in conjunction with fig. 2 and 5, the control method includes the following steps:
s1, starting to obtain the carbon loading capacity and the temperature of the particle trap and the gas flow of a second gas inlet pipe in real time;
the controller needs to perform actual operation according to the collected carbon loading and temperature of the particle trap, and the data such as the gas flow of the second gas inlet pipe.
S2, judging whether the carbon loading capacity is larger than a first preset carbon loading capacity, if so, executing S3, and if not, executing S4;
s3, judging whether the temperature is lower than a preset temperature, if so, executing S5, and if not, executing S6;
wherein the measured temperature is the temperature of the particle catcher, and the real-time detection is completed by a temperature sensor 12 positioned on the particle catcher.
S4, the particle catcher is not regenerated;
wherein, the non-regeneration of the particle catcher means that the exhausted tail gas can be directly exhausted through the muffler 8 without the treatment of the particle catcher.
S5, controlling the heating assembly to be opened to heat the particle catcher, returning to S3, and controlling the heating assembly to be closed before S6 is executed when the temperature is higher than the preset temperature;
s6, controlling an air pump and a throttle valve to be opened;
when the air pump and the throttle valve are opened, air may enter the second air intake line, wherein the air may come from the first air intake line or may be air passing through the second air filter.
S7, adjusting the opening of the throttle valve according to the gas flow of the second air inlet pipeline;
the opening angle and area of the throttle valve can be changed to adjust the gas flow of the second air inlet pipeline.
S8, starting regeneration of the particle catcher;
s9, judging whether the carbon loading capacity is smaller than a second preset carbon loading capacity, if so, executing S10, and if not, returning to S8, wherein the second preset carbon loading capacity is smaller than the first preset carbon loading capacity;
and S10, stopping regeneration of the particle trap, controlling the air pump and the throttle valve to be closed, and ending.
It can be understood that, when the operation starts, the devices such as the gas flow sensor 13 and the temperature sensor 12 acquire the carbon loading capacity and the temperature of the particle trap in real time, and the gas flow value of the second gas inlet pipe, the air enters the first gas inlet pipeline under the action of the first supercharger 5 after being purified by the first air filter 4, a part of the gas is cooled by the intercooler 3 and then is conveyed to the engine 1, is mixed with particulate matters such as soot particles or ash after participating in power generation, and reaches the particle trap 7 through the gas outlet of the engine and the first gas inlet of the particle trap 7, and the other part of the gas enters the second gas inlet pipeline, when the temperature of the particle trap is lower than the preset temperature, the controller starts the high-frequency electronic oscillator 14 to convert direct current into alternating current, the non-contact heating coil heats the particle trap, and the temperature is raised to the preset temperature, and if the temperature of the particle trap is higher than the preset temperature, the controller closes the high-frequency electronic oscillator 14, and the non-contact heating coil stops heating the particle trap; when the temperature of the particle trap is not lower than the preset temperature, the particle trap does not need to be heated, the controller closes the high-frequency electronic oscillator 14 or keeps a closed state, and the controller opens the throttle valve 10 and the bypass valve 16 or opens the throttle valve 10 and the air pump 9 for tail gas treatment in an adjusting state; and then when the carbon loading capacity is judged to be smaller than the second preset carbon loading capacity, stopping regeneration of the particle trap, controlling the air pump and the throttle valve to be closed, when the carbon loading capacity is judged to be not smaller than the second preset carbon loading capacity, continuing working of the particle trap until the carbon loading capacity is smaller than the second preset carbon loading capacity, stopping regeneration of the particle trap, controlling the air pump and the throttle valve to be closed, and ending.
Fig. 6 is a flow chart of a method for controlling an electrically heated particle trap according to another embodiment of the present invention, the method being implemented based on any of the above-described particle trap systems, fig. 3 is a schematic diagram of the structure of an electrically heated particle trap system according to another embodiment of the present invention, referring to fig. 3 in conjunction with fig. 2 and 6,
optionally, the particle trap system further comprises a first pressure sensor and a second pressure sensor, the second air inlet line further comprises an air inlet branch, the air inlet branch is provided with a bypass valve, the control method comprises the following steps:
s1, acquiring the carbon loading capacity and the temperature of the particle trap and the gas flow of a second gas inlet pipe in real time; acquiring a first pressure acquired by a first pressure sensor and a second pressure acquired by a second pressure sensor;
s2, judging whether the carbon loading capacity is larger than a first preset carbon loading capacity, if so, executing S3, and if not, executing S4;
s3, judging whether the temperature is lower than a preset temperature, if so, executing S5, and if not, executing S11;
s4, the particle catcher is not regenerated;
s5, controlling the heating component to be opened to heat the particle catcher, judging whether the temperature is higher than a preset temperature, if so, controlling the heating component to be closed, executing S11, and if not, returning to S5;
s6, controlling an air pump and a throttle valve to be opened;
s7, adjusting the opening of the throttle valve according to the gas flow of the second air inlet pipeline;
s8, starting regeneration of the particle catcher;
s9, judging whether the carbon loading capacity is smaller than a second preset carbon loading capacity, if so, executing S10, and if not, returning to S8, wherein the second preset carbon loading capacity is smaller than the first preset carbon loading capacity;
s10, if S12 is executed, stopping regeneration of the particle trap, controlling a bypass valve and a throttle valve to be closed, and ending; if S6 is executed, stopping regeneration of the particle catcher, controlling the air pump and the throttle valve to be closed, and ending;
s11, judging whether the first pressure is smaller than the second pressure, if so, executing S6, and if not, executing S12;
and S12, controlling the throttle valve and the bypass valve to be opened.
It can be understood that, when the operation is started, the first pressure sensor 17, the gas flow sensor 13, the second pressure sensor 18, the temperature sensor 12 and other devices obtain the carbon carrying capacity and the temperature of the particle trap, the gas flow of the second air inlet pipe, the numerical values of the first pressure and the second pressure in real time, the air enters the first air inlet pipeline under the action of the first supercharger 5 after being purified by the first air filter 4, the whole air is cooled by the intercooler 3 and then is conveyed to the engine 1, the whole air is mixed with particulate matters such as particles or ash after participating in power generation and reaches the particle trap 7 through the air outlet of the engine and the first air inlet of the particle trap 7, meanwhile, the air enters the second air inlet pipeline after being purified by the second air filter 19, whether the carbon carrying capacity is larger than the first preset carbon carrying capacity is judged, if yes, whether the temperature is smaller than the preset temperature is judged, if not, the particle trap is not regenerated, and the gas can be directly discharged through the silencer 8; judging whether the temperature is lower than a preset temperature, if so, when the temperature of the particle catcher is lower than the preset temperature, starting the high-frequency electronic oscillator 14 by the controller, converting direct current into alternating current, heating the particle catcher by the non-contact heating coil 13, increasing the temperature, and if the temperature of the particle catcher is higher than the preset temperature, closing the high-frequency electronic oscillator 14 by the controller, and stopping heating the particle catcher by the non-contact heating coil 13; and when the temperature of the particle catcher is not lower than the preset temperature, judging whether the first pressure is lower than the second pressure. If the first pressure is lower than the second pressure, the gas is blocked from entering the second air inlet pipeline, the air pump 9 is needed for assistance, the controller controls the air pump 9 and the throttle valve 10 to be opened, and a large amount of gas enters the second air inlet pipeline; if the first pressure is higher than the second pressure, the gas can smoothly enter a second gas inlet pipe under the pressure difference, the controller controls the throttle valve 10 and the bypass valve 16 to be opened, and the gas reaches the particle catcher through the gas inlet branch; the opening of the throttle valve is adjusted according to the gas flow of the second gas inlet pipeline, the gas flow of the second gas inlet pipeline is adjusted, the particle trap is regenerated, after the gas of the first gas inlet pipeline and the gas of the second gas inlet pipeline are mixed, the particles in the mixed gas are adsorbed and converted by the three-way catalyst in a physical and/or chemical mode through the regenerated particle trap, when the carbon carrying amount is larger than a second preset carbon carrying amount, the particles are discharged through the silencer 8, when the carbon carrying amount is not larger than the second preset carbon carrying amount, the particle trap is regenerated until the carbon carrying amount of the discharged gas is larger than the second preset carbon carrying amount, and the particles are discharged through the silencer 8.
According to the electrically heated particulate trap system and control method provided by the present invention, the electrically heated particulate trap system includes an engine; the air inlet pipeline assembly is used for passing filtered air and comprises a first air inlet pipeline and a second air inlet pipeline, and an air outlet of the first air inlet pipeline is connected with an air inlet of the engine; the exhaust emission component comprises a particle trap, a first air inlet of the particle trap is connected with an air outlet of the engine, and a second air inlet of the particle trap is connected with an air outlet of the second air inlet pipeline; the heating assembly comprises a non-contact heating coil surrounding the periphery of the particle catcher, and the non-contact heating coil is used for performing electromagnetic heating by connecting high-frequency alternating current; the temperature sensor is positioned on the particle trap and used for detecting the temperature of the particle trap, the controller is used for controlling the heating component to be opened and closed according to the temperature of the particle trap, the gas flow sensor is positioned on the second gas inlet pipeline and used for detecting the flow of air entering the particle trap, and the controller is also used for adjusting the flow of gas of the second gas inlet pipeline according to the flow of air entering the particle trap. When the particle catcher is required to be regenerated, the particle catcher is heated to a standby working state by the non-contact heating coil, and can participate in tail gas treatment in time, meanwhile, the non-contact heating coil has multiple heating modes which are overlapped, so that the rapid heating can be realized on the basis of energy consumption saving, the problems that when an engine is in a specific condition such as low speed, low load or low exhaust temperature, enough heat and oxygen cannot be provided, the regeneration fails, the back pressure of an exhaust system rises, the power is reduced, and even the engine is scrapped are solved, the regeneration temperature required by carbon deposition in the particle catcher is high, the regeneration time is long, and complete regeneration is difficult to realize are solved, the particle catcher can be in the standby working state with certain temperature, and the regeneration can be rapidly corresponding, and meanwhile, the carbon loading capacity, the temperature, the gas flow of the second pressure, the gas flow of the first pressure and the gas flow of the second pressure of the gas inlet pipe can be obtained in real time according to devices through a corresponding control method, so that the gas flow of the gas in the gas pipeline is controlled, the fresh air flow rate is adjusted, the concentration in the particle catcher is ensured, and the regeneration of the particle catcher is realized, and the service life of the engine is prolonged.
It is to be noted that the foregoing description is only exemplary of the invention and that the principles of the technology may be employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (11)
1. A particle trap system, comprising:
an engine;
the air inlet pipeline assembly is used for passing filtered air and comprises a first air inlet pipeline and a second air inlet pipeline, and an air outlet of the first air inlet pipeline is connected with an air inlet of the engine;
the exhaust emission assembly comprises a particle trap, a first air inlet of the particle trap is connected with an air outlet of the engine, and a second air inlet of the particle trap is connected with an air outlet of the second air inlet pipeline;
the heating assembly comprises a non-contact heating coil surrounding the periphery of the particle catcher, and the non-contact heating coil is used for performing electromagnetic heating by switching in high-frequency alternating current;
the temperature sensor is positioned on the particle trap and used for detecting the temperature of the particle trap, the controller is used for controlling the heating component to be opened and closed according to the temperature of the particle trap, the gas flow sensor is positioned on the second gas inlet pipeline and used for detecting the flow of air entering the particle trap, and the controller is also used for adjusting the gas flow of the second gas inlet pipeline according to the flow of air entering the particle trap.
2. The particle trap system of claim 1, further comprising: the air inlet pipeline is arranged on the engine body, and the air inlet pipeline is arranged on the engine body and is used for communicating with the engine.
3. The particulate trap system according to claim 2 wherein an inlet of the second inlet line communicates with a line between the first supercharger and the intercooler; or an air inlet of the second air inlet pipeline is communicated with a pipeline between the intercooler and the throttle valve.
4. The particle trap system of claim 3, further comprising: the air pump and the throttle valve are sequentially arranged in the air circulation direction of the second air inlet pipeline, the air flow sensor is located at the downstream position of the throttle valve, and the air pump and the throttle valve are respectively connected with the controller.
5. The particulate trap system of claim 4 wherein the second air intake conduit further comprises an air intake branch, an air inlet of the air intake branch being in communication with the second air intake conduit upstream of the air pump, an air outlet of the air intake branch being in communication with the second air intake conduit between the air pump and the throttle valve, the air intake branch having a bypass valve disposed thereon, the bypass valve being connected to the controller.
6. The particle trap system of claim 5, further comprising: the first pressure sensor is used for collecting first pressure of an air inlet of the second air inlet pipeline, the second pressure sensor is used for collecting second pressure of a second air inlet of the particle trap, and the controller is used for controlling opening and closing of the second air inlet pipeline and opening and closing of the air inlet branch according to the first pressure and the second pressure.
7. The particle trap system according to claim 2 wherein the first and second air inlet conduits are separately disposed, further comprising: the air pump and the throttle valve are respectively connected with the controller, and the gas flow sensor is positioned at the downstream position of the throttle valve.
8. The particulate trap system of claim 1, wherein the exhaust emission assembly further comprises: the second supercharger is positioned at an air outlet of the engine, the three-way catalyst is positioned in a pipeline between the particle trap and the second supercharger, the silencer is positioned at the air outlet of the particle trap, and an air outlet of the second air inlet pipeline is communicated with the pipeline between the three-way catalyst and the particle trap.
9. The particulate trap system of claim 1, wherein the heating assembly further comprises a high frequency electronic oscillator and a direct current power supply, the high frequency electronic oscillator being coupled to the direct current power supply and the non-contact heating coil, respectively, for converting direct current output from the direct current power supply into high frequency alternating current, and outputting the high frequency alternating current to the non-contact heating coil.
10. A particle trap control method, implemented on the basis of the particle trap system of any one of claims 1-9, comprising the steps of:
s1, acquiring the carbon loading capacity and the temperature of the particle trap and the gas flow of the second gas inlet pipe in real time;
s2, judging whether the carbon loading capacity is larger than a first preset carbon loading capacity, if so, executing S3, and if not, executing S4;
s3, judging whether the temperature is lower than a preset temperature, if so, executing S5, and if not, executing S6;
s4, the particle catcher is not regenerated;
s5, controlling the heating component to be opened to heat the particle catcher, returning to the S3, and controlling the heating component to be closed before the temperature is higher than the preset temperature and S6 is executed;
s6, controlling the air pump and the throttle valve to be opened;
s7, adjusting the opening of the throttle valve according to the gas flow of the second air inlet pipeline;
s8, starting regeneration of the particle catcher;
s9, judging whether the carbon loading capacity is smaller than a second preset carbon loading capacity, if so, executing S10, and if not, returning to S8, wherein the second preset carbon loading capacity is smaller than the first preset carbon loading capacity;
and S10, stopping regeneration of the particle catcher, controlling the air pump and the throttle valve to be closed, and ending.
11. The particulate trap control method of claim 10, wherein the particulate trap system further comprises a first pressure sensor and a second pressure sensor, the second air intake conduit further comprises an air intake branch, the air intake branch being provided with a bypass valve, wherein,
the S1 further comprises: acquiring a first pressure acquired by the first pressure sensor and a second pressure acquired by the second pressure sensor;
after S5 and before S6, further comprising: s11, judging whether the first pressure is smaller than the second pressure, if so, executing S6, and if not, executing S12;
s12, controlling the throttle valve and the bypass valve to be opened; wherein said S12 is located before said S7;
if the step S12 is executed, the step S10 is executed, where the regeneration of the particulate trap is stopped, the bypass valve and the throttle valve are controlled to be closed, and then the operation is ended.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211419698.1A CN115711166A (en) | 2022-11-14 | 2022-11-14 | Electric heating type particle trap system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211419698.1A CN115711166A (en) | 2022-11-14 | 2022-11-14 | Electric heating type particle trap system and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115711166A true CN115711166A (en) | 2023-02-24 |
Family
ID=85233032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211419698.1A Pending CN115711166A (en) | 2022-11-14 | 2022-11-14 | Electric heating type particle trap system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115711166A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116557114A (en) * | 2023-05-31 | 2023-08-08 | 中国第一汽车股份有限公司 | A particle trap system, control method and vehicle |
| CN117028005A (en) * | 2023-08-17 | 2023-11-10 | 中船动力(集团)有限公司 | Design scheme for improving temperature of exhaust gas after supercharger |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1732329A (en) * | 2002-12-26 | 2006-02-08 | 国立大学法人东京海洋大学 | Particle removal device in exhaust gas |
| CN104847455A (en) * | 2015-06-05 | 2015-08-19 | 北京航空航天大学 | Gasoline engine particulate matter filter regeneration system and gasoline engine particulate matter filter regeneration method |
| CN107288716A (en) * | 2017-07-10 | 2017-10-24 | 浙江交通职业技术学院 | The wall flow type ceramic grain catcher device that current vortex is uniformly heated |
| GB2555851A (en) * | 2016-11-14 | 2018-05-16 | Jaguar Land Rover Ltd | Treatment of engine exhaust gases |
| CN109404172A (en) * | 2018-10-18 | 2019-03-01 | 奇瑞汽车股份有限公司 | A kind of gasoline engine combustion system based on high pressure EGR |
| JP2019183672A (en) * | 2018-04-03 | 2019-10-24 | スズキ株式会社 | Exhaust emission control device |
| CN110469386A (en) * | 2018-05-09 | 2019-11-19 | 福特全球技术公司 | Method and system for particulate filter regeneration |
| CN214997867U (en) * | 2021-06-03 | 2021-12-03 | 长城汽车股份有限公司 | Engine exhaust aftertreatment regeneration control system and car |
| CN113969851A (en) * | 2021-09-28 | 2022-01-25 | 东风商用车有限公司 | EGR (exhaust gas recirculation) rate driving capability improving system and control method |
-
2022
- 2022-11-14 CN CN202211419698.1A patent/CN115711166A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1732329A (en) * | 2002-12-26 | 2006-02-08 | 国立大学法人东京海洋大学 | Particle removal device in exhaust gas |
| CN104847455A (en) * | 2015-06-05 | 2015-08-19 | 北京航空航天大学 | Gasoline engine particulate matter filter regeneration system and gasoline engine particulate matter filter regeneration method |
| GB2555851A (en) * | 2016-11-14 | 2018-05-16 | Jaguar Land Rover Ltd | Treatment of engine exhaust gases |
| CN107288716A (en) * | 2017-07-10 | 2017-10-24 | 浙江交通职业技术学院 | The wall flow type ceramic grain catcher device that current vortex is uniformly heated |
| JP2019183672A (en) * | 2018-04-03 | 2019-10-24 | スズキ株式会社 | Exhaust emission control device |
| CN110469386A (en) * | 2018-05-09 | 2019-11-19 | 福特全球技术公司 | Method and system for particulate filter regeneration |
| CN109404172A (en) * | 2018-10-18 | 2019-03-01 | 奇瑞汽车股份有限公司 | A kind of gasoline engine combustion system based on high pressure EGR |
| CN214997867U (en) * | 2021-06-03 | 2021-12-03 | 长城汽车股份有限公司 | Engine exhaust aftertreatment regeneration control system and car |
| CN113969851A (en) * | 2021-09-28 | 2022-01-25 | 东风商用车有限公司 | EGR (exhaust gas recirculation) rate driving capability improving system and control method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116557114A (en) * | 2023-05-31 | 2023-08-08 | 中国第一汽车股份有限公司 | A particle trap system, control method and vehicle |
| CN117028005A (en) * | 2023-08-17 | 2023-11-10 | 中船动力(集团)有限公司 | Design scheme for improving temperature of exhaust gas after supercharger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115711166A (en) | Electric heating type particle trap system and control method | |
| CN107762591B (en) | Device and method for regenerating a particle filter | |
| CN107781027B (en) | Engine system | |
| CN103061853B (en) | Exhaust after treatment system | |
| CN103867323B (en) | The method and apparatus for improving EGT in the gas extraction system of turbocharged internal combustion engine | |
| CN103502587A (en) | Method for operating a motor vehicle diesel engine | |
| CN105531458A (en) | Turbo compound system control device | |
| CN203285519U (en) | Novel purification system for aftertreatment of automobile exhaust | |
| TW200905066A (en) | Exhaust-gas aftertreatment upstream of a turbocharger | |
| JP2011012563A (en) | Exhaust gas purification system | |
| JP2015224551A (en) | Internal combustion engine exhaust emission control system | |
| CN109595069B (en) | Device and method for improving DOC regeneration efficiency | |
| WO2017018083A1 (en) | Control device for internal combustion engine | |
| CN108757240A (en) | A kind of diesel engine gas handling system and thermal management algorithm, device | |
| JP6775169B2 (en) | Exhaust gas purification device | |
| CN204572125U (en) | A kind of diesel engine vent gas cleaning system | |
| CN207554162U (en) | A kind of vehicle maintenance service system | |
| CN210003364U (en) | a post-processing system | |
| CN210195849U (en) | DPF electric heating active regeneration device for tractor | |
| CN214741591U (en) | Novel power discharge system device of diesel vehicle | |
| JP2003286820A (en) | Engine exhaust-emission control device | |
| CN107559075A (en) | A kind of vehicle maintenance service system and method | |
| CN208502873U (en) | A kind of independent electrical heating type dpf regeneration device | |
| CN208010484U (en) | Automobile low pressure egr system | |
| JP2004092413A (en) | Exhaust aftertreatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |