CN114658535A - Air inlet supercharging system and air inlet control method - Google Patents
Air inlet supercharging system and air inlet control method Download PDFInfo
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- CN114658535A CN114658535A CN202210150889.6A CN202210150889A CN114658535A CN 114658535 A CN114658535 A CN 114658535A CN 202210150889 A CN202210150889 A CN 202210150889A CN 114658535 A CN114658535 A CN 114658535A
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- 238000012544 monitoring process Methods 0.000 claims description 3
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- 238000002485 combustion reaction Methods 0.000 description 2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B33/00—Engines characterised by provision of pumps for charging or scavenging
- F02B33/44—Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
- F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
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Abstract
The invention discloses an air inlet supercharging system and an air inlet control method, which are arranged on a turbocharger, wherein the air inlet supercharging system comprises: the gas storage tank is used for storing compressed gas; a booster valve mounted on a pipeline between the air storage tank and the turbocharger; and the controller is electrically connected with the booster valve and is used for controlling the booster valve to open when the rotating speed of the turbocharger is abnormal so as to output the compressed gas to enable the rotating speed of the turbocharger to reach normal. The air inlet pressurization system is formed by the air storage tank, the pressurization valve and the controller, and the rotation speed can be controlled to be normal when the rotation speed of the turbocharger is abnormal, so that the rotation speed of the turbocharger can be accurately controlled.
Description
Technical Field
The application relates to the technical field of engine air inlet control, in particular to an air inlet supercharging system and an air inlet control method.
Background
The engine intake boosting is to compress more air and fuel to perform more sufficient mixed combustion so as to improve the power and fuel economy of the engine. The current supercharging mode mainly comprises mechanical turbocharging and exhaust turbocharging, the mechanical turbocharging is driven by a mechanical device connected with an engine, the supercharging rotating speed is linearly proportional to the rotating speed of the engine, as the mechanical turbocharging is synchronous with the rotating speed of the engine, the mechanical turbocharging effect is weaker and cannot achieve a larger supercharging effect when the engine is at low speed, and the mechanical turbocharging is a redundant load and affects the oil consumption; the exhaust turbocharging adopts the way that the exhaust of an engine is utilized to drive a turbine for supercharging, a supercharging power source is driven by the exhaust of the engine, the supercharging process needs time, and the supercharging has certain hysteresis so as not to achieve the effect of quick supercharging. In the double-turbocharging of the combination of mechanical turbocharging and exhaust turbocharging, when the rotating speed of an engine is higher, the supercharging requirement can be met only by the exhaust turbocharging, the supercharging output is overlarge, the problem of overspeed of the turbocharger is caused, and the rotating speed of the turbocharger cannot be accurately controlled.
Therefore, how to realize accurate control of the rotation speed of the turbocharger is a technical problem to be solved urgently at present.
Disclosure of Invention
In view of the above technical problems, the present invention provides an intake air supercharging system and an intake air control method, which can realize accurate control of the rotation speed of a turbocharger.
The embodiment of the invention provides the following scheme:
in a first aspect, an embodiment of the present invention provides an intake air supercharging system, which is installed on a turbocharger, and includes:
the gas storage tank is used for storing compressed gas;
a booster valve mounted on a pipeline between the air storage tank and the turbocharger;
and the controller is electrically connected with the booster valve and is used for controlling the booster valve to open when the rotating speed of the turbocharger is abnormal so as to output the compressed gas to enable the rotating speed of the turbocharger to reach normal.
In an alternative embodiment, the intake air supercharging system further comprises:
the start-stop control end of the supercharger is electrically connected with the controller, and the gas outlet of the supercharger is communicated with the gas inlet of the gas storage tank and used for compressing the atmospheric gas into the compressed gas and storing the compressed gas in the gas storage tank.
In an alternative embodiment, the intake air supercharging system further comprises:
the check valve is arranged on an air outlet of the supercharger, and the compressed gas output by the supercharger flows to the gas storage tank through the check valve.
In an alternative embodiment, the intake air supercharging system further comprises:
the pressure sensor is electrically connected with the controller, is arranged on the gas storage tank and is used for monitoring the current gas pressure of the compressed gas in the gas storage tank;
and the controller is used for controlling the supercharger to start or stop working according to the current air pressure.
In an alternative embodiment, the intake air supercharging system further comprises:
the turbine valve is electrically connected with the controller and is installed on an air inlet pipe of the turbocharger;
the controller is used for controlling the turbine valve to be opened and controlling the supercharging valve to be closed when the rotating speed of the turbocharger is normal, so that normal-pressure gas is delivered to the turbocharger;
the controller is further used for controlling the turbine valve to be closed and controlling the supercharging valve to be opened when the rotating speed of the turbocharger is abnormal, so that the compressed gas is conveyed to the turbocharger.
In a second aspect, an embodiment of the present invention further provides an intake control method, which is applied to an intake control system, where the intake control system includes an air tank, a boost valve and a turbocharger, the air tank stores compressed air, and the boost valve is installed on a pipeline between the air tank and the turbocharger, and the method includes:
acquiring the current rotating speed of the turbocharger;
judging whether the rotational speed of the turbocharger is abnormal or not according to the current rotational speed;
and if so, controlling the pressure increasing valve to be opened so as to output the compressed gas to enable the rotating speed of the turbocharger to reach normal.
In an optional embodiment, the intake control system further includes a supercharger, an air outlet of the supercharger is communicated with an air inlet of the air storage tank, and before acquiring the current rotation speed of the turbocharger, the method further includes:
acquiring the current air pressure of the air storage tank;
judging whether the current air pressure reaches a first target air pressure or not;
if not, controlling the supercharger to compress the normal-pressure gas into the compressed gas, and storing the compressed gas in the gas storage tank until the gas pressure in the gas storage tank reaches the first target gas pressure.
In an optional embodiment, after determining whether the current air pressure reaches the first target air pressure, the method further includes:
acquiring the current working condition of the engine;
judging whether the current working condition is a back-dragging working condition or not;
and if so, controlling the electric energy output under the back-dragging working condition to drive the supercharger so that the supercharger compresses the normal-pressure gas into the compressed gas and stores the compressed gas in the gas storage tank until the second target gas pressure is reached.
In an alternative embodiment, the determining whether the turbocharger has a rotational speed abnormality according to the current rotational speed includes:
acquiring the current engine speed;
acquiring a target rotating speed of the turbocharger corresponding to the current engine rotating speed based on a preset correspondence table between the rotating speed of the transmitter and the rotating speed of the turbocharger;
and comparing the current rotating speed with the target rotating speed, and determining whether the rotating speed of the turbocharger is abnormal.
In an alternative embodiment, the controlling the pressure increase valve to open to output the compressed gas to normalize the rotation speed of the turbocharger includes:
acquiring a current target rotating speed interval of the turbocharger, wherein the target rotating speed interval is a corresponding normal rotating speed interval of the turbocharger under a current working condition;
if the current rotating speed is smaller than the target rotating speed interval, controlling the pressurization valve to be opened, outputting the compressed gas with first preset pressure, and pushing the turbocharger to rotate in an accelerated manner to the target rotating speed interval;
and if the current rotating speed is greater than the target rotating speed interval and the external air pressure of the turbocharger is less than the standard atmospheric pressure, controlling the booster valve to open, outputting the compressed air with a second preset pressure, and inhibiting the turbocharger from rotating to the target rotating speed interval in a decelerating manner.
Compared with the prior art, the air inlet supercharging system, the air inlet control method and the air inlet control device provided by the invention have the following advantages:
according to the invention, the air storage tank, the booster valve and the controller form an air inlet boosting system, when the rotating speed of the turbocharger is too low, the controller controls the booster valve to be opened to output compressed gas in the air storage tank to the turbocharger so as to push the turbocharger to improve the rotating speed and reduce the hysteresis of the turbocharger; under the condition of a vehicle with low speed in a highland (such as climbing on a highland), when the rotating speed of the turbocharger is too high, the controller controls to open the pressure increasing valve to output compressed gas in the gas storage tank to the turbocharger, and the pressure of the inlet gas of the turbocharger, which is higher than the external air pressure, is kept (for example, in a plain pressure range), so that the turbocharger is inhibited from overspeed, and the driving condition and the dynamic property similar to the plain environment are obtained. The control method can control the rotating speed to be normal when the rotating speed of the turbocharger is abnormal so as to realize accurate control of the rotating speed of the turbocharger.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present specification, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an intake air supercharging system provided in an embodiment of the present invention;
FIG. 2 is a flow chart of a method for supercharging intake air according to an embodiment of the present invention;
FIG. 3 is a logic diagram for controlling operation of a supercharger by a controller according to an embodiment of the present invention;
fig. 4 is a logic diagram of the operation of the controller to control the pressure increasing valve according to the embodiment of the invention.
The reference numbers indicate that 1-air storage tank, 2-booster valve, 3-booster, 4-one-way valve, 5-pressure sensor, 6-air inlet pipe, 7-engine, 8-turbocharger, 9-turbine valve, 10-air filter, 11-intercooler, 12-throttle valve, and 13-air inlet manifold.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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, rather than all embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments of the present invention belong to the scope of protection of the embodiments of the present invention.
The existing engine air inlet system comprises an air filter 10, a turbocharger 8, an intercooler 11, a throttle valve 12 and an air inlet manifold 13 which are arranged according to air inlet flow, all the components are communicated through an air inlet pipe 6, air enters an engine 7 through the air inlet system to be mixed with fuel oil for combustion, and is discharged through an exhaust manifold of the engine 7, the turbocharger 8 is pushed to rotate through exhaust potential energy in the exhaust process, the air inlet of the engine 7 is pressurized in the rotation process of the turbocharger 8, and the pressurization mode causes the existence of hysteresis. In addition, in the case of a high altitude road condition, the air pressure entering the turbocharger 8 during the supercharging process is small due to the thin air, which may cause the turbocharger 8 to overspeed. And therefore the rotation speed of the turbocharger 8 cannot be accurately controlled, and how to implement accurate control of the rotation speed of the turbocharger 8 by using the intake air supercharging system and the intake air supercharging method according to the present invention will be specifically described below with reference to the embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an intake supercharging system installed on a turbocharger 8 according to an embodiment of the present invention, where the intake supercharging system includes:
the gas storage tank 1 is used for storing compressed gas; a booster valve 2, wherein the booster valve 2 is arranged on a pipeline between the air storage tank 1 and the turbocharger 8; and the controller is electrically connected with the pressure increasing valve 2 and is used for controlling the pressure increasing valve 2 to be opened when the rotating speed of the turbocharger 8 is abnormal so as to output the compressed gas to enable the rotating speed of the turbocharger 8 to reach normal.
Specifically, the gas storage tank 1 can be a high-pressure steel cylinder, and the air compressor is used for compressing and pre-charging air at normal pressure into the gas storage tank 1 to store compressed gas, the pre-charged air pressure can be 0.7MPa, the gas storage tank is connected with a turbocharger 8 of a vehicle through a pipeline, and the pipeline can be a metal pipe or a high-pressure plastic gas pipe. The booster valve 2 can be an electric normally-closed valve, the opening and closing actions are controlled and executed by the controller, and when the rotating speed of the turbocharger 8 is abnormal, the booster valve 2 is controlled to be opened by the controller; when the rotation speed of the turbocharger 8 is normal, the controller controls the pressure increasing valve 2 to close. The booster valve 2 can also be a flow valve, the booster flow required by the turbocharger 8 is calculated by the controller according to the rotating speed when the rotating speed is abnormal, the booster valve 2 is opened to the corresponding opening degree to release the compressed gas of the booster flow, and the opening degree of the booster valve 2 is adjusted in real time to be matched with the rotating speed value when the rotating speed is abnormal according to the change of the abnormal rotating speed. The controller may be a control box formed by a single chip microcomputer, or may be an Engine Management System (EMS) that monitors whether the rotational speed of the turbocharger 8 is abnormal or not, so as to cooperatively control the boost valve 2 in real time.
In one particular embodiment, the intake air supercharging system further comprises:
Specifically, booster 3 is electronic booster, opens through controller control and stops, opens and stops control and can realize through the power disconnection and the closure of a relay control booster 3, consequently, opens and stops the coil control end that the control end can be the relay. Of course, the supercharger may be a manual supercharger, and may compress the normal pressure air into the compressed air and store the compressed air in the air tank 1.
In one particular embodiment, the intake air supercharging system further comprises:
and the check valve 4 is arranged on an air outlet of the supercharger 3, and compressed air output by the supercharger 3 flows to the air storage tank 1 through the check valve 4.
Specifically, after the supercharger compresses and stores air into the air storage tank 1, the one-way valve 4 can prevent compressed air in the air storage tank 1 from flowing back.
In one particular embodiment, the intake air supercharging system further comprises:
the pressure sensor 5 is electrically connected with the controller, and the pressure sensor 5 is installed on the gas storage tank 1 and used for monitoring the current gas pressure of the compressed gas in the gas storage tank 1; and the controller is used for controlling the supercharger to start or stop working according to the current air pressure.
Specifically, the pressure sensor 5 outputs the acquired analog quantity signal to the controller, the controller converts the analog quantity signal into a digital quantity signal to judge the air pressure value of the current air pressure in the air storage tank 1, and the booster is controlled to stop working when the current air pressure reaches a preset target air pressure; and when the current air pressure is smaller than the target air pressure, controlling the booster to start working.
During specific implementation, because intake pipe 6 and gas holder 1 all communicate with turbo charger 8, this connectivity has formed three-way gas circuit structure, and when pressure boost valve 2 opened and exported the compressed gas in the gas holder 1 to turbo charger 8, the compressed gas probably flows in the intake pipe 6 of air cleaner 10 direction in the cross flow, causes the wasting of resources.
In one particular embodiment, the intake air supercharging system further comprises:
the turbine valve 9, the turbine valve 9 is electrically connected with the controller, the turbine valve 9 is mounted on the air inlet pipe 6 of the turbocharger 8; the controller is used for controlling the opening of the turbine valve 9 and the closing of the booster valve 2 when the rotating speed of the turbocharger 8 is normal, so that the normal-pressure gas is delivered to the turbocharger 8; and the controller is also used for controlling the turbine valve 9 to be closed and the booster valve 2 to be opened when the rotating speed of the turbocharger 8 is abnormal, so that the compressed gas is conveyed to the turbocharger 8.
Specifically, the turbo valve 9 may be a flow valve, and when the rotational speed of the turbocharger 8 is normal, the controller controls the turbo valve 9 to open for normal pressurization; when the rotating speed is abnormal, the controller controls the turbine valve 9 to be closed, and simultaneously the booster valve 2 is opened, so that the compressed gas is conveyed to the turbocharger 8, and the rotating speed of the turbocharger 8 is kept normal. Since the turbine valve 9 is in the closed state, the compressed gas can be output to the turbocharger 8 more intensively without being split. It can be understood that when a vehicle needs a faster torque response during sudden and rapid acceleration of a small throttle, the boost air in the boost air storage tank 1 can be introduced into the inlet of the turbocharger 8 in a shorter time by closing the turbine valve 9 and opening the boost valve 2, so that a certain boost pressure is formed behind the throttle valve 12 of the engine 7 before the turbocharger 8 starts to boost, and the engine 7 can quickly achieve stronger power output. Further, the booster valve 2 may be a three-way valve that closes air that enters the turbocharger 8 through the air filter 10 while controlling the output of compressed air to the turbocharger 8.
It should be noted that, the turbine valve 9 and the pressure increasing valve 2 are arranged and controlled separately by the controller, and when the compressed gas is required to be output to the turbocharger 8, the turbine valve 9 can be closed, the opening degree of the pressure increasing valve 2 is adjusted to adapt to the abnormal rotating speed of the turbocharger 8, so that the control and adjustment are more flexible, and the applicability of the air inlet control system is better.
Based on the same inventive concept as the air intake control system, an embodiment of the present invention further provides an air intake control method applied to the air intake control system, where the air intake control system includes an air storage tank, a boost valve and a turbocharger, compressed air is stored in the air storage tank, the boost valve is installed on a pipeline between the air storage tank and the turbocharger, and referring to fig. 2, the method includes:
and S21, acquiring the current rotating speed of the turbocharger.
Specifically, the current rotating speed can be directly measured and obtained based on a speed measuring sensor, the speed measuring sensor is installed on the turbocharger, and the speed measuring sensor is an encoder or a laser velocimeter; of course, the current rotational speed may also be obtained by indirect calculation from the correspondence relationship between the engine rotational speed and the turbocharger rotational speed.
In a specific implementation mode, the air intake control system further includes a supercharger, an air outlet of the supercharger is communicated with an air inlet of the air storage tank, and before acquiring the current rotation speed of the turbocharger, the air intake control system further includes:
acquiring the current air pressure of the air storage tank; judging whether the current air pressure reaches a first target air pressure or not; if not, controlling the supercharger to compress the normal-pressure gas into compressed gas, and storing the compressed gas in the gas storage tank until the gas pressure in the gas storage tank reaches the first target gas pressure.
Specifically, referring to fig. 3, after the engine is started, it is determined whether the current air pressure in the air tank reaches the first target air pressure, and when the current air pressure in the air tank does not reach the first target air pressure, the supercharger is started to compress the atmospheric air into compressed air and store the compressed air into the air tank for standby.
In a specific embodiment, after determining whether the current air pressure reaches the first target air pressure, the method further includes:
acquiring the current working condition of the engine; judging whether the current working condition is a back-dragging working condition or not; if so, controlling the electric energy output under the back-dragging working condition to drive the supercharger so that the supercharger compresses the normal-pressure gas into compressed gas and stores the compressed gas in the gas storage tank until the second target gas pressure is reached.
Specifically, the first target air pressure is set according to the requirement that the air pressure in the air storage tank can cover all working conditions; the second target air pressure is set according to the product of the maximum bearing pressure of the air storage tank and a safety factor, the safety factor can be set to be 0.9, and the second target air pressure can also be set to be the maximum supercharging pressure which can be reached by the supercharger. Referring to fig. 3, when the current pressure in the air tank is greater than the first target air pressure, it is further determined whether a second target air pressure is reached, and if so, the supercharger stops working; if the pressure in the air storage tank is not reached, when the engine is in the back-dragging working condition, the electric energy output by the back-dragging working condition is utilized to drive the supercharger to continue working, so that the pressure in the air storage tank is higher, and the direct use is convenient next time. The reverse dragging working condition is that the engine does not work through fuel oil, the engine is driven to run by external power, and for example, the engine is driven to run by inertia of a vehicle in the downhill sliding process of the vehicle. And storing compressed gas in the gas storage tank, acquiring the current rotating speed of the turbocharger, and then entering step S22.
And S22, judging whether the rotation speed of the turbocharger is abnormal or not according to the current rotation speed.
Specifically, whether the rotational speed of the turbocharger is abnormal or not can be compared with a target rotational speed, if the difference is too large, the rotational speed is determined to be abnormal, and the target rotational speed is a corresponding normal rotational speed value of the turbocharger under the current working condition.
In a specific embodiment, the judging whether the rotation speed abnormality occurs to the turbocharger according to the current rotation speed comprises the following steps:
acquiring the current engine speed; acquiring a target rotating speed of the turbocharger corresponding to the current engine rotating speed based on a preset corresponding table between the rotating speed of the transmitter and the rotating speed of the turbocharger; and comparing the current rotating speed with the target rotating speed to determine whether the rotating speed of the turbocharger is abnormal.
Specifically, because the turbocharger is driven to rotate by the exhaust potential energy of the engine, and the engine speed and the turbocharger speed have a corresponding relation, whether the turbocharger has abnormal speed can be determined by the difference between the current engine speed and the target speed. By the method, the abnormal rotating speed condition of the turbocharger can be determined based on the engine management system of the vehicle without adding other speed measuring sensors. The routine proceeds to step S23 after determining whether or not there is a rotational speed abnormality in the turbocharger.
And S23, if yes, controlling the pressure increasing valve to be opened so as to output the compressed gas to enable the rotation speed of the turbocharger to reach normal.
Specifically, referring to fig. 4, if it is analyzed that the abnormal rotation speed of the turbocharger may be supercharging hysteresis, it is indicated that there is a supercharging requirement, the turbine valve is closed, the supercharging valve is opened to output compressed gas, and after the compressed gas is output, the compressed gas has a high airflow, which can push the turbocharger to accelerate to rotate, so that the rotation speed reaches normal. And circularly judging whether the turbocharger can meet the supercharging requirement, namely whether the turbocharger reaches normal rotating speed or not, and continuously keeping outputting compressed gas when the rotating speed is still abnormal. And when no pressurization demand exists, the turbine valve is controlled to be opened, and the pressurization valve is controlled to be closed.
In one specific embodiment, controlling the pressure increasing valve to open to output the compressed gas to make the rotation speed of the turbocharger normal comprises:
acquiring a target rotating speed interval of the current turbocharger, wherein the target rotating speed interval is a normal rotating speed interval corresponding to the turbocharger under the current working condition; if the current rotating speed is less than the target rotating speed interval, controlling the booster valve to open, outputting compressed gas with first preset pressure, and pushing the turbocharger to rotate in an accelerating mode to the target rotating speed interval; and if the current rotating speed is greater than the target rotating speed interval and the external air pressure of the turbocharger is less than the standard atmospheric pressure, controlling the booster valve to open, outputting compressed air with second preset pressure, and inhibiting the turbocharger from decelerating and rotating to the target rotating speed interval.
Specifically, when the current rotating speed is less than the target rotating speed interval, the current rotating speed of the turbocharger is too low, the turbocharger needs to rotate in an accelerated manner, and the turbocharger can be pushed to rotate in an accelerated manner to the target rotating speed interval by outputting compressed gas with first preset pressure; when the current rotating speed is larger than the target rotating speed interval, the current rotating speed of the turbocharger is over high, overspeed occurs, and the compressed gas with the second preset pressure is output to inhibit the turbocharger from rotating to the target rotating speed interval in a decelerating manner. The first preset pressure and the second preset pressure can be determined according to the experience of technicians, and can also be determined through test calibration test, so that the turbocharger can be rotated to a target rotating speed interval.
The technical scheme provided by the embodiment of the invention at least has the following technical effects or advantages:
1. the air inlet pressurization system is formed by the air storage tank, the pressurization valve and the controller, when the rotating speed of the turbocharger is too low, the controller controls the pressurization valve to be opened to output compressed air in the air storage tank to the turbocharger so as to push the turbocharger to improve the rotating speed and reduce the hysteresis of the turbocharger; under the condition of a vehicle with low speed in a highland (such as climbing on a highland), when the rotating speed of the turbocharger is too high, the controller controls to open the pressure increasing valve to output compressed gas in the gas storage tank to the turbocharger, and the pressure of the inlet gas of the turbocharger, which is higher than the external air pressure, is kept (for example, in a plain pressure range), so that the turbocharger is inhibited from overspeed, and the driving condition and the dynamic property similar to the plain environment are obtained. The control method can control the rotating speed to be normal when the rotating speed of the turbocharger is abnormal so as to realize accurate control of the rotating speed of the turbocharger.
2. The scheme of the embodiment of the invention has an energy storage function, for example, in the process of downhill sliding of a vehicle, the power generation of an engine under the condition of towing can be used for the work of a supercharger, so that the pressure in an air storage tank is higher, and the supercharger can be directly used in the next time.
3. The invention has flexible control, the supercharger and the engine can be decoupled, and the supercharger can work under heavy load even at low speed in plateau (such as climbing in plateau) to obtain larger supercharging pressure.
Since the electronic device described in this embodiment is an electronic device used for implementing the method for processing information in this embodiment, a person skilled in the art can understand the specific implementation manner of the electronic device of this embodiment and various variations thereof based on the method for processing information described in this embodiment, and therefore, how to implement the method in this embodiment by the electronic device is not described in detail here. Electronic devices used by those skilled in the art to implement the method for processing information in the embodiments of the present application are all within the scope of the present application.
Claims (10)
1. An intake air supercharging system mounted on a turbocharger, the intake air supercharging system comprising:
the gas storage tank is used for storing compressed gas;
a booster valve mounted on a pipeline between the air storage tank and the turbocharger;
and the controller is electrically connected with the booster valve and is used for controlling the booster valve to open when the rotating speed of the turbocharger is abnormal so as to output the compressed gas to enable the rotating speed of the turbocharger to reach normal.
2. The intake air boosting system according to claim 1, further comprising:
the start-stop control end of the supercharger is electrically connected with the controller, and the gas outlet of the supercharger is communicated with the gas inlet of the gas storage tank and used for compressing normal-pressure gas into the compressed gas and storing the compressed gas in the gas storage tank.
3. The intake air supercharging system of claim 2, further comprising:
the check valve is arranged on an air outlet of the supercharger, and the compressed gas output by the supercharger flows to the gas storage tank through the check valve.
4. The intake plenum system of claim 2, further comprising:
the pressure sensor is electrically connected with the controller, is arranged on the gas storage tank and is used for monitoring the current gas pressure of the compressed gas in the gas storage tank;
and the controller is used for controlling the supercharger to start or stop working according to the current air pressure.
5. The intake air boosting system according to claim 1, further comprising:
the turbine valve is electrically connected with the controller and is installed on an air inlet pipe of the turbocharger;
the controller is used for controlling the turbine valve to be opened and controlling the supercharging valve to be closed when the rotating speed of the turbocharger is normal, so that normal-pressure gas is delivered to the turbocharger;
the controller is further used for controlling the turbine valve to be closed and controlling the supercharging valve to be opened when the rotating speed of the turbocharger is abnormal, so that the compressed gas is conveyed to the turbocharger.
6. An intake control method applied to an intake control system including an air tank in which compressed gas is stored, a booster valve installed on a pipe between the air tank and a turbocharger, the method comprising:
acquiring the current rotating speed of the turbocharger;
judging whether the rotational speed of the turbocharger is abnormal or not according to the current rotational speed;
and if so, controlling the pressure increasing valve to be opened so as to output the compressed gas to enable the rotating speed of the turbocharger to reach normal.
7. The intake control method according to claim 6, wherein the intake control system further includes a supercharger whose outlet communicates with an inlet of the air tank, and before the current rotational speed of the turbocharger is acquired, the method further includes:
acquiring the current air pressure of the air storage tank;
judging whether the current air pressure reaches a first target air pressure or not;
if not, controlling the supercharger to compress the normal-pressure gas into the compressed gas, and storing the compressed gas in the gas storage tank until the gas pressure in the gas storage tank reaches the first target gas pressure.
8. The intake control method according to claim 7, wherein after determining whether the current air pressure reaches the first target air pressure, further comprising:
acquiring the current working condition of the engine;
judging whether the current working condition is a back-dragging working condition or not;
and if so, controlling the electric energy output under the back-dragging working condition to drive the supercharger so that the supercharger compresses the normal-pressure gas into the compressed gas and stores the compressed gas in the gas storage tank until the second target gas pressure is reached.
9. The intake control method according to claim 6, wherein the determining whether a rotational speed abnormality occurs in the turbocharger based on the current rotational speed includes:
acquiring the current engine speed;
acquiring a target rotating speed of the turbocharger corresponding to the current engine rotating speed based on a preset correspondence table between the rotating speed of the transmitter and the rotating speed of the turbocharger;
and comparing the current rotating speed with the target rotating speed, and determining whether the rotating speed of the turbocharger is abnormal.
10. The intake control method according to claim 6, wherein the controlling of the pressure increase valve to open to output the compressed gas to bring the rotation speed of the turbocharger to normal includes:
acquiring a current target rotating speed interval of the turbocharger, wherein the target rotating speed interval is a corresponding normal rotating speed interval of the turbocharger under a current working condition;
if the current rotating speed is smaller than the target rotating speed interval, controlling the pressurization valve to be opened, outputting the compressed gas with first preset pressure, and pushing the turbocharger to rotate in an accelerated manner to the target rotating speed interval;
and if the current rotating speed is greater than the target rotating speed interval and the external air pressure of the turbocharger is less than the standard atmospheric pressure, controlling the booster valve to open, outputting the compressed air with a second preset pressure, and inhibiting the turbocharger from rotating to the target rotating speed interval in a decelerating manner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210150889.6A CN114658535A (en) | 2022-02-18 | 2022-02-18 | Air inlet supercharging system and air inlet control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210150889.6A CN114658535A (en) | 2022-02-18 | 2022-02-18 | Air inlet supercharging system and air inlet control method |
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