CN111322178B - An EGR mixer heating system - Google Patents
An EGR mixer heating system Download PDFInfo
- Publication number
- CN111322178B CN111322178B CN202010243876.4A CN202010243876A CN111322178B CN 111322178 B CN111322178 B CN 111322178B CN 202010243876 A CN202010243876 A CN 202010243876A CN 111322178 B CN111322178 B CN 111322178B
- Authority
- CN
- China
- Prior art keywords
- controller
- liquid
- heat exchanger
- heat
- heating device
- 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.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 230000000694 effects Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 abstract description 4
- 238000007710 freezing Methods 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
- F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
- F02M26/18—Thermal insulation or heat protection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
-
- 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
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
本发明公开了一种EGR混合器加热系统，涉及EGR系统，主要解决的是EGR混合器结冰的技术问题，所述系统包括控制器、将EGR混合器包裹的加热装置，所述加热装置内设有用于容纳导热液体的导热腔，所述加热装置通过进液管和出液管连接有导热液体供应机构，所述进液管上设有电性连接所述控制器的第一控制阀。本发明通过向加热装置通入循环的导热液体对EGR混合器进行加热，可以有效防止EGR混合器结冰导致的无法启动或者熄火的安全隐患，提高EGR系统可靠性，从而提高整车的驾驶安全性。
The present invention discloses an EGR mixer heating system, which relates to an EGR system and mainly solves the technical problem of EGR mixer freezing. The system includes a controller and a heating device that wraps the EGR mixer. The heating device is provided with a heat-conducting cavity for accommodating a heat-conducting liquid. The heating device is connected to a heat-conducting liquid supply mechanism through a liquid inlet pipe and a liquid outlet pipe. The liquid inlet pipe is provided with a first control valve electrically connected to the controller. The present invention heats the EGR mixer by introducing circulating heat-conducting liquid into the heating device, which can effectively prevent the safety hazard of being unable to start or flameout caused by the freezing of the EGR mixer, improve the reliability of the EGR system, and thus improve the driving safety of the whole vehicle.
Description
Technical Field
The present invention relates to EGR systems, and more particularly, to an EGR mixer heating system.
Background
In order to meet the national six-emission regulations, internal combustion engines adopt an equivalent combustion technical route, but because of the higher in-cylinder combustion temperature of the technical route, EGR (exhaust gas recirculation) gas must be introduced to reduce the in-cylinder combustion temperature, thereby improving the reliability of the engine. A mainstream internal combustion engine control system of the current state six gas engine using the EGR technology is shown in fig. 1. A part of the exhaust gas burned from the engine cylinder a passes through the EGR cooler B and the EGR valve C, and enters the mixer D to be mixed with fresh air. The EGR gas component is mainly composed of CO 2 and H 2 O, where H 2 O exists mainly in a gaseous state.
Because the physical construction of the EGR valve is a poppet valve, there is no perfect seal between the valve plate and the valve seat, and there is a slight leak in the closed condition. In cold regions, when there is a slight leak in the EGR valve, the gas enters the EGR mixer to mix with fresh air, because the temperature of the air is low, and water in the EGR condenses into water upon condensation.
Under long-time small-load working conditions, especially long-time idle working conditions, such as cold climate conditions, a driver usually uses in-situ idle working condition on-air to warm in the process of waiting for loading and unloading, if an EGR valve has slight leakage, condensed water cannot be filled into a cylinder due to small air flow in the EGR for a long time, so that condensed water is attached to an EGR mixer to form ice. With the accumulation of ice formation, the EGR mixer can be blocked to cause air to enter the cylinder for combustion through the mixer, so that the engine is insufficient in power or is in flameout fault, and even can not be started, and the driving safety is influenced.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an EGR mixer heating system capable of effectively preventing an EGR mixer from icing, aiming at the defects in the prior art.
The technical scheme is that the EGR mixer heating system comprises a controller and a heating device wrapping the EGR mixer, wherein a heat conducting cavity for containing heat conducting liquid is arranged in the heating device, the heating device is connected with a heat conducting liquid supply mechanism through a liquid inlet pipe and a liquid outlet pipe, and a first control valve electrically connected with the controller is arranged on the liquid inlet pipe.
As a further improvement, a first temperature sensor electrically connected with the controller is arranged at the outlet of the EGR mixer.
Further, a heat conduction fin is arranged in the heat conduction cavity of the heating device.
Further, a heat insulation layer is arranged on the periphery of the heating device.
Further, the heat-conducting liquid supply mechanism is an engine circulating water mechanism.
Further, the controller is an engine ECU.
Further, the heat conduction liquid supply mechanism comprises a heat exchanger connected with the liquid inlet pipe and the liquid outlet pipe, the air inlet end of the heat exchanger is connected with an engine exhaust manifold through an air inlet pipe, the air outlet end of the heat exchanger is connected with an exhaust pipe through an air outlet pipe, and the liquid inlet pipe is provided with a water pump electrically connected with the controller.
Further, a second control valve electrically connected with the controller is arranged on the air inlet pipe.
Further, the heat exchanger is provided with a second temperature sensor electrically connected with the controller.
Advantageous effects
Compared with the prior art, the invention has the advantages that the circulating heat conduction liquid can be introduced into the heating device to heat the EGR mixer, the potential safety hazard that the EGR mixer cannot be started or flameout caused by icing can be effectively prevented, the reliability of an EGR system is improved, and the driving safety of the whole vehicle is improved.
Drawings
FIG. 1 is a schematic diagram of a conventional structure;
FIG. 2 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.
Wherein, 1-controller, 2-EGR mixer, 3-heating device, 4-feed liquor pipe, 5-drain pipe, 6-heat conduction liquid supply mechanism, 7-first control valve, 8-first temperature sensor, 9-heat exchanger, 10-intake pipe, 11-engine exhaust manifold, 12-outlet duct, 13-blast pipe, 14-water pump, 15-second control valve, 16-second temperature sensor.
Detailed Description
The invention will be further described with reference to specific embodiments in the drawings.
Example 1
Referring to fig. 2, an EGR mixer heating system includes a controller 1, a heating device 3 wrapping the EGR mixer 2, a heat conducting cavity for containing heat conducting liquid is arranged in the heating device 3, the heating device 3 is connected with a heat conducting liquid supply mechanism 6 through a liquid inlet pipe 4 and a liquid outlet pipe 5, and a first control valve 7 electrically connected with the controller 1 is arranged on the liquid inlet pipe 4. The circulation heat-conducting liquid which is heated is introduced into the heat-conducting cavity of the heating device 3 through the heat-conducting liquid supply mechanism 6, and the heating device 3 can heat the EGR mixer 2 after heating, so that the EGR mixer 2 is prevented from freezing.
The outlet of the EGR mixer 2 is provided with a first temperature sensor 8 electrically connected with the controller 1, for acquiring the temperature of the mixture at the outlet of the EGR mixer 2. The heat conducting fins are arranged in the heat conducting cavity of the heating device 3, so that the heat absorption of the heating device 3 to the heat conducting liquid can be improved, and the temperature rise of the heating device 3 can be accelerated. The periphery of the heating device 3 is provided with a heat insulation layer, so that the heat loss of the heating device 3 can be reduced, and the heating device 3 can be protected.
In the present embodiment, the heat conductive liquid supply mechanism 6 is an engine circulating water mechanism, and the controller 1 is an engine ECU.
The heating system described in this embodiment can implement at least the following heating methods:
the engine ECU acquires the temperature of the mixture at the outlet of the EGR mixer 2 in real time through a first temperature sensor 8;
When the temperature of the mixed gas is lower than a first calibration value, the engine ECU controls the first control valve 7 to be opened, so that circulating water in an engine circulating water mechanism is led into a heat conducting cavity of the heating device 3 and circulated back to the engine circulating water mechanism, and the effect of heating the EGR mixer 2 is achieved;
When the mixture temperature is higher than the second calibrated value, the engine ECU controls the first control valve 7 to close, stopping heating the EGR mixer 2.
In this embodiment, the first calibration value is 0 to 5 ℃ and the second calibration value is 20 to 25 ℃.
Example 2
Referring to fig. 3, unlike embodiment 1, the heat-conducting liquid supply mechanism 6 in this embodiment includes a heat exchanger 9 connected to a liquid inlet pipe 4 and a liquid outlet pipe 5, an air inlet end of the heat exchanger 9 is connected to an engine exhaust manifold 11 through an air inlet pipe 10, an air outlet end of the heat exchanger 9 is connected to an exhaust pipe 13 through an air outlet pipe 12, and a water pump 14 electrically connected to the controller 1 is provided on the liquid inlet pipe 4. The air inlet pipe 10 is provided with a second control valve 15 electrically connected with the controller 1. The heat exchanger 9 is provided with a second temperature sensor 16 electrically connected to the controller 1 for acquiring the temperature of the liquid in the heat exchanger 9. The controller 1 may be an engine ECU or an external independent controller.
The heating system described in this embodiment can implement at least the following heating methods:
The controller 1 acquires the temperature of the liquid in the heat exchanger 9 in real time through the second temperature sensor 16, if the temperature of the liquid is higher than a third calibration value, the controller 1 controls the second control valve 15 to be closed, engine exhaust gas is stopped from entering the heat exchanger 9, and potential safety hazards caused by overhigh temperature of the liquid in the heat exchanger 9 are prevented;
the controller 1 acquires the temperature of the mixture at the outlet of the EGR mixer 2 in real time through the first temperature sensor 8;
when the temperature of the mixed gas is lower than a first calibration value, the controller 1 controls the first control valve 7 and the water pump 14 to be opened, so that circulating water in the heat exchanger 9 is led into the heat conducting cavity of the heating device 3 and circulated back to the heat exchanger 9, and the effect of heating the EGR mixer 2 is achieved;
When the mixture temperature is higher than the second calibrated value, the heat exchanger 9 controls the first control valve 7 and the water pump 14 to be closed, and the heating of the EGR mixer 2 is stopped.
In this embodiment, the first calibration value is 0to 5 ℃, the second calibration value is 20 to 25 ℃, and the third calibration value is 60 to 80 ℃.
According to the invention, the circulating heat conduction liquid is introduced into the heating device to heat the EGR mixer, so that the potential safety hazard that the EGR mixer cannot be started or flameout caused by freezing can be effectively prevented, the reliability of an EGR system is improved, and the driving safety of the whole vehicle is improved.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these do not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (2)
1. The heating system of the EGR mixer is characterized by comprising a controller (1) and a heating device (3) wrapping the EGR mixer (2), wherein a heat conducting cavity for containing heat conducting liquid is arranged in the heating device (3), the heating device (3) is connected with a heat conducting liquid supply mechanism (6) through a liquid inlet pipe (4) and a liquid outlet pipe (5), and a first control valve (7) electrically connected with the controller (1) is arranged on the liquid inlet pipe (4);
A first temperature sensor (8) electrically connected with the controller (1) is arranged at the outlet of the EGR mixer (2);
The heat conduction liquid supply mechanism (6) comprises a heat exchanger (9) connected with the liquid inlet pipe (4) and the liquid outlet pipe (5), an air inlet end of the heat exchanger (9) is connected with an engine exhaust manifold (11) through an air inlet pipe (10), an air outlet end of the heat exchanger (9) is connected with an exhaust pipe (13) through an air outlet pipe (12), and a water pump (14) electrically connected with the controller (1) is arranged on the liquid inlet pipe (4);
The air inlet pipe (10) is provided with a second control valve (15) electrically connected with the controller (1);
the heat exchanger (9) is provided with a second temperature sensor (16) electrically connected with the controller (1);
The controller (1) acquires the temperature of the liquid in the heat exchanger (9) in real time through the second temperature sensor (16), if the temperature of the liquid is higher than a third calibration value, the controller (1) controls the second control valve (15) to be closed, engine exhaust gas is stopped from entering the heat exchanger (9), and potential safety hazards caused by overhigh temperature of the liquid in the heat exchanger (9) are prevented;
the controller (1) acquires the temperature of the mixed gas at the outlet of the EGR mixer (2) in real time through the first temperature sensor (8);
when the temperature of the mixed gas is lower than a first calibration value, the controller (1) controls the first control valve (7) and the water pump (14) to be opened, so that circulating water in the heat exchanger (9) is led into the heat conducting cavity of the heating device (3) and circulated back to the heat exchanger (9), and the effect of heating the EGR mixer (2) is achieved;
When the temperature of the mixed gas is higher than a second standard value, the heat exchanger (9) controls the first control valve (7) and the water pump (14) to be closed, and the EGR mixer (2) is stopped being heated;
The first calibration value is 0-5 ℃, the second calibration value is 20-25 ℃, and the third calibration value is 60-80 ℃;
a heat conduction fin is arranged in the heat conduction cavity of the heating device (3);
the periphery of the heating device (3) is provided with a heat insulation layer.
2. An EGR mixer heating system according to claim 1, characterized in that the controller (1) is an engine ECU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010243876.4A CN111322178B (en) | 2020-03-31 | 2020-03-31 | An EGR mixer heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010243876.4A CN111322178B (en) | 2020-03-31 | 2020-03-31 | An EGR mixer heating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111322178A CN111322178A (en) | 2020-06-23 |
| CN111322178B true CN111322178B (en) | 2024-12-06 |
Family
ID=71167793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010243876.4A Active CN111322178B (en) | 2020-03-31 | 2020-03-31 | An EGR mixer heating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111322178B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927657B (en) * | 2020-08-11 | 2021-08-03 | 一汽解放汽车有限公司 | Structural design method of engine air inlet system |
| CN112065613A (en) * | 2020-08-12 | 2020-12-11 | 潍柴动力股份有限公司 | Bath heat mixer and heating method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016017407A (en) * | 2014-07-04 | 2016-02-01 | 愛三工業株式会社 | Exhaust mixing device |
| CN211819733U (en) * | 2020-03-31 | 2020-10-30 | 广西玉柴机器股份有限公司 | EGR mixer heating system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6564545B1 (en) * | 2002-01-31 | 2003-05-20 | Visteon Global Technologies, Inc. | Superintegration of three way catalyst and heat exchanger for HCCI engine intake air temperature control |
-
2020
- 2020-03-31 CN CN202010243876.4A patent/CN111322178B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016017407A (en) * | 2014-07-04 | 2016-02-01 | 愛三工業株式会社 | Exhaust mixing device |
| CN211819733U (en) * | 2020-03-31 | 2020-10-30 | 广西玉柴机器股份有限公司 | EGR mixer heating system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111322178A (en) | 2020-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107762682B (en) | Water jet antifreeze system | |
| US20090229543A1 (en) | Cooling device for engine | |
| CN103775252B (en) | Intelligent cooling device of supercharged diesel engine EGR system | |
| WO2014125984A1 (en) | Temperature control device for intercooler | |
| CN111322178B (en) | An EGR mixer heating system | |
| US8412438B2 (en) | Dual state liquefied petroleum gas engine assembly | |
| CN104114828A (en) | Cooling device for internal combustion engine | |
| US20180298853A1 (en) | Egr cooling apparatus | |
| CN102444507B (en) | Gas inlet and outlet system for homogeneous charge compression ignition (HCCI) engine, gas inlet control method and engine | |
| CN107542555A (en) | Vehicle exhaust recirculating system opens ice mode control method | |
| WO2022032974A1 (en) | Bath heating mixer and heating method thereof | |
| CN111219272A (en) | Exhaust gas recirculation mixer with heating water cavity | |
| CN211819733U (en) | EGR mixer heating system | |
| CN108035831A (en) | A kind of applicable highland and severe cold environment diesel engine assisted cold start device and control method | |
| JP2017036695A (en) | Control device of diesel engine | |
| CN215486338U (en) | Methanol engine heating system and vehicle | |
| CN211819738U (en) | EGR valve and mixer heating control system | |
| CN100359146C (en) | Device for Realizing Stratified Exhaust Gas Recirculation in Gasoline Engine Cylinder and Intake Control Method | |
| CN111425310B (en) | Control method for preventing EGR system from freezing | |
| CN211819737U (en) | Exhaust gas recirculation mixer with heating water cavity | |
| CN115539236A (en) | Engine assembly and warming system | |
| CN108730011B (en) | Cooling device for internal combustion engine | |
| US20150337773A1 (en) | Apparatus and method for supplying fuel using egr cooler | |
| CN213419240U (en) | Methanol engine air inlet heating system for vehicle and vehicle | |
| CN222066887U (en) | Intercooler system and supercharged engine |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |