CN113513390A - Regeneration method of particle trap of extended-range gasoline engine - Google Patents
Regeneration method of particle trap of extended-range gasoline engine Download PDFInfo
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- CN113513390A CN113513390A CN202110767638.8A CN202110767638A CN113513390A CN 113513390 A CN113513390 A CN 113513390A CN 202110767638 A CN202110767638 A CN 202110767638A CN 113513390 A CN113513390 A CN 113513390A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- 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
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Theoretical Computer Science (AREA)
- Evolutionary Computation (AREA)
- General Physics & Mathematics (AREA)
- Geometry (AREA)
- Computer Hardware Design (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention provides a regeneration method of a particle catcher of an extended-range gasoline engine, which comprises the following steps: judging whether regeneration is needed or not by the engine controller according to the carbon loading model of the particle trap; judging whether to allow regeneration according to the vehicle running conditions; the vehicle control unit sends a regeneration allowing instruction to the engine controller, and meanwhile, the vehicle control unit controls the range extender to be at a regeneration working point; and after the engine controller receives the regeneration allowing instruction, adjusting and controlling the oil injection quantity, and simultaneously controlling the excess air coefficient within a certain range, wherein the particle catcher starts to regenerate. According to the invention, by utilizing the characteristic of decoupling of the range extender and the vehicle, the whole vehicle controller controls the range-extended engine to be at a specific regeneration working point, and then the engine controller controls the air-fuel ratio to regenerate within a certain range, so that the problem that the regeneration is not easy to trigger under urban working conditions is solved.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a regeneration method of a particle trap of an extended-range gasoline engine.
Background
Under the requirement of the national six-emission regulation, in order to meet the emission requirement of particulate matters, the particulate trap can be matched on the vehicle aftertreatment carrying a gasoline engine to capture the particulate matters, but when the particulate matters are accumulated to a certain degree, the particulate trap is blocked, and the dynamic property and the economical efficiency of the vehicle can be influenced. For this reason, the particle trap needs to be regenerated to prevent clogging.
The particulate trap of gasoline engine generally adopts the regeneration control mode of fuel cut-off, and when the vehicle went, the driver loosened accelerator pedal promptly, and the gasoline engine got into the fuel cut-off operating mode, and fresh air gets into the particulate trap, if the particulate trap temperature at this moment is greater than the burning threshold value, is 600 ℃ usually, so the particulate matter can burn completely fast, reaches the purpose of clearing up the particulate trap.
The regeneration mode of the existing gasoline engine particle trap is oil-cut regeneration, and in order to achieve higher regeneration efficiency, the oil-cut regeneration needs to be carried out when the inlet temperature of the particle trap meets the regeneration condition, so that the problem that the particle trap is not easy to trigger under urban working conditions exists.
According to the universal characteristics of the engine and the arrangement position of the particle catcher in the prior art, if the arrangement mode of the particle catcher is a chassis type, the engine can meet the regeneration condition only under the low-speed large-load working condition or the high-speed medium-low load working condition, and is not easy to trigger in the urban road condition.
Disclosure of Invention
The invention solves the problem that the traditional gasoline engine particle trap regeneration mode is not easy to trigger under urban working conditions, provides a regeneration method of a range-extended gasoline engine particle trap, utilizes the characteristic of decoupling of a range extender and a vehicle, controls the range-extended engine to be at a specific regeneration working point by a vehicle controller, and controls the air-fuel ratio to regenerate within a certain range by an engine controller, thereby solving the problem that the regeneration is not easy to trigger under the urban working conditions.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a regeneration method of a particle catcher of an extended-range gasoline engine comprises the following steps:
s1, the engine controller judges whether regeneration is needed according to the carbon load model of the particle trap, if so, the engine controller sends a regeneration request instruction to the vehicle control unit to carry out S2, and if not, the control unit returns to S1;
s2, the vehicle controller receives the regeneration request command, judges whether to allow regeneration according to the vehicle running condition, if yes, carries out S3, if not, stops the regeneration control;
s3, the vehicle control unit sends a regeneration allowing instruction to the engine controller, and meanwhile the vehicle control unit controls the range extender to be at a regeneration working condition point;
and S4, after the engine controller receives the regeneration permission instruction, adjusting and controlling the oil injection quantity, and simultaneously controlling the excess air coefficient within a certain range, wherein the particle catcher starts to regenerate.
The invention provides a range-extended gasoline engine regeneration mode different from the traditional gasoline engine particle trap regeneration mode by utilizing a regeneration control mode that an engine controller is matched with a vehicle controller and utilizing the characteristic that a range extender is decoupled from vehicle driving.
Preferably, the S4 further includes a step of determining whether regeneration is complete:
and S5, judging whether the regeneration is finished or not by the engine controller according to the regeneration model, if so, finishing the regeneration, sending a regeneration finishing instruction to the vehicle controller, stopping the control of the regeneration working condition of the vehicle controller, and if not, returning to S4.
The regeneration model is provided with a value for completing the carbon load of regeneration, the regeneration model is a model of the regeneration process of the particle trap, which is calculated according to the air-fuel ratio, the rotating speed, the torque and the temperature of the particle trap in the engine controller, if the actual carbon load value is calculated to be less than or equal to the value for completing the carbon load of regeneration, the regeneration is considered to be completed, and the value for completing the carbon load of regeneration is 3 g.
Preferably, the S1 specifically includes the following steps:
the carbon loading model is preset with a carbon loading threshold, the carbon loading model calculates an actual carbon loading value according to the combustion parameters acquired by the engine controller, and when the actual carbon loading value is greater than or equal to the carbon loading threshold, regeneration is judged to be needed.
The carbon loading threshold is 6g, and the carbon loading model is a calculation model of the amount of the particulate matters captured in the particulate trap, which is calculated by the engine controller according to combustion parameters such as an ignition angle, an air-fuel ratio and an air intake amount of the engine.
Preferably, the vehicle operating conditions include a vehicle speed condition, a power battery charge condition and a vehicle operating state condition.
Preferably, the S2 specifically includes the following steps:
the vehicle operating conditions that allow regeneration to be entered are: the vehicle speed is more than 10km/h, the electric quantity of the power battery is more than 30%, and the running state of the vehicle has no fault.
Preferably, the S3 specifically includes the following steps:
the vehicle control unit sends a torque instruction to the engine controller and a rotating speed instruction to the generator controller, and when the torque reaches a torque set value and the rotating speed reaches a rotating speed set value, the range extender is at a regeneration working condition point. The torque set point is 150Nm and the rotational speed set point is 3500 rpm.
Preferably, the S4 specifically includes the following steps:
after the engine controller receives the regeneration permission instruction, the oil injection quantity is adjusted and controlled by controlling the oil injection pulse width, namely the oil injection time of the oil injector, and meanwhile, the excess air coefficient is controlled to be between 1.05 and 1.2, and at the moment, the particle catcher starts to regenerate.
The invention has the following beneficial effects: the engine controller sends a regeneration request instruction to the vehicle control unit, the vehicle control unit controls the engine to operate at a regeneration working condition point, the engine controller controls the excess air coefficient to regenerate at a target point, the regeneration working condition point can meet the regeneration condition without a low-speed large-load working condition or a high-speed medium-low load working condition, real-time regeneration can be carried out according to actual requirements, and regeneration is conveniently triggered under the regeneration condition.
Drawings
FIG. 1 is a flow chart of a method of an embodiment.
Detailed Description
Example (b):
the embodiment provides a regeneration method of a particle catcher of an extended-range gasoline engine, referring to fig. 1, comprising the following steps:
s1, the engine controller judges whether regeneration is needed according to the carbon load model of the particle trap, if so, the engine controller sends a regeneration request instruction to the vehicle control unit to carry out S2, and if not, the control unit returns to S1; s1 specifically includes the following steps:
the carbon loading model is preset with a carbon loading threshold value, the carbon loading threshold value is 6g, the carbon loading model calculates an actual carbon loading value according to combustion parameters obtained by the engine controller, and when the actual carbon loading value is larger than or equal to the carbon loading threshold value, regeneration is judged to be needed.
The carbon load model is a calculation model of the amount of particulate matter captured in the particulate trap, which is calculated by the engine controller based on combustion parameters such as the ignition angle, the air-fuel ratio, and the intake air amount of the engine.
S2, the vehicle controller receives the regeneration request command, judges whether to allow regeneration according to the vehicle running condition, if yes, carries on S3, if no, stops the regeneration control;
the vehicle running conditions include a vehicle speed condition, a power battery capacity condition and a vehicle running state condition. The vehicle operating conditions that allow regeneration to be entered are: the vehicle speed is more than 10km/h, the electric quantity of the power battery is more than 30%, and the running state of the vehicle has no fault.
And S3, the vehicle control unit sends a torque instruction to the engine controller and a rotating speed instruction to the generator controller, and when the torque reaches a torque set value of 150Nm and the rotating speed reaches a rotating speed set value of 3500rpm, the range extender is at a regeneration working condition point.
S4, after the engine controller receives the regeneration permission instruction, the oil injection quantity is adjusted and controlled, and at the same time, the excess air coefficient is controlled within a certain range, at the moment, the particle catcher starts to regenerate, after the engine controller receives the regeneration permission instruction, the oil injection quantity is adjusted and controlled by controlling the oil injection pulse width, namely the oil injection time of the oil injector, and at the same time, the excess air coefficient is controlled between 1.05 and 1.2, in the embodiment, the excess air coefficient is selected to be 1.2, and at the moment, the particle catcher starts to regenerate.
And S5, judging whether the regeneration is finished or not by the engine controller according to the regeneration model, if so, finishing the regeneration, sending a regeneration finishing instruction to the vehicle controller, stopping the control of the regeneration working condition of the vehicle controller, and if not, returning to S4. The regeneration model is provided with a value for completing the carbon load of regeneration, the regeneration model is a model of the regeneration process of the particle trap, which is calculated according to the air-fuel ratio, the rotating speed, the torque and the temperature of the particle trap in the engine controller, if the actual carbon load value is calculated to be less than or equal to the value for completing the carbon load of regeneration, the regeneration is considered to be completed, and the value for completing the carbon load of regeneration is 3 g.
The invention provides a range-extended gasoline engine regeneration mode different from the traditional gasoline engine particle trap regeneration mode by utilizing a regeneration control mode that an engine controller is matched with a vehicle controller and utilizing the characteristic that a range extender is decoupled from vehicle driving.
Claims (7)
1. A regeneration method of a particle catcher of an extended-range gasoline engine is characterized by comprising the following steps:
s1, the engine controller judges whether regeneration is needed according to the carbon load model of the particle trap, if so, the engine controller sends a regeneration request instruction to the vehicle control unit to carry out S2, and if not, the control unit returns to S1;
s2, the vehicle controller receives the regeneration request command, judges whether to allow regeneration according to the vehicle running condition, if yes, carries out S3, if not, stops the regeneration control;
s3, the vehicle control unit sends a regeneration allowing instruction to the engine controller, and meanwhile the vehicle control unit controls the range extender to be at a regeneration working condition point;
and S4, after the engine controller receives the regeneration permission instruction, adjusting and controlling the oil injection quantity, and simultaneously controlling the excess air coefficient within a certain range, wherein the particle catcher starts to regenerate.
2. The regeneration method for the extended range gasoline engine particulate trap as claimed in claim 1, wherein said S4 further comprises the step of determining whether the regeneration is completed:
and S5, judging whether the regeneration is finished or not by the engine controller according to the regeneration model, if so, finishing the regeneration, sending a regeneration finishing instruction to the vehicle controller, stopping the control of the regeneration working condition of the vehicle controller, and if not, returning to S4.
3. The regeneration method of the particulate trap of the extended range gasoline engine as claimed in claim 1 or 2, wherein the step S1 comprises the steps of:
the carbon loading model is preset with a carbon loading threshold, the carbon loading model calculates an actual carbon loading value according to the combustion parameters acquired by the engine controller, and when the actual carbon loading value is greater than or equal to the carbon loading threshold, regeneration is judged to be needed.
4. The method as claimed in claim 1 or 2, wherein the vehicle operating conditions include vehicle speed conditions, power battery charge conditions and vehicle operating state conditions.
5. The method as claimed in claim 4, wherein the step S2 comprises the steps of:
the vehicle operating conditions that allow regeneration to be entered are: the vehicle speed is more than 10km/h, the electric quantity of the power battery is more than 30%, and the running state of the vehicle has no fault.
6. The regeneration method of the particulate trap of the extended range gasoline engine as claimed in claim 1 or 2, wherein the step S3 comprises the steps of:
the vehicle control unit sends a torque instruction to the engine controller and a rotating speed instruction to the generator controller, and when the torque reaches a torque set value and the rotating speed reaches a rotating speed set value, the range extender is at a regeneration working condition point.
7. The regeneration method of the particulate trap of the extended range gasoline engine as claimed in claim 1 or 2, wherein the step S4 comprises the steps of:
and after the engine controller receives the regeneration permission instruction, the oil injection quantity is adjusted and controlled by controlling the oil injection pulse width of the oil injector, and the excess air coefficient is controlled to be between 1.05 and 1.2, so that the particle catcher starts to regenerate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110767638.8A CN113513390A (en) | 2021-07-07 | 2021-07-07 | Regeneration method of particle trap of extended-range gasoline engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110767638.8A CN113513390A (en) | 2021-07-07 | 2021-07-07 | Regeneration method of particle trap of extended-range gasoline engine |
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| CN113513390A true CN113513390A (en) | 2021-10-19 |
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| CN202110767638.8A Pending CN113513390A (en) | 2021-07-07 | 2021-07-07 | Regeneration method of particle trap of extended-range gasoline engine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165344A (en) * | 2021-12-09 | 2022-03-11 | 安徽江淮汽车集团股份有限公司 | Hybrid vehicle type GPF active regeneration control method |
| CN115614132A (en) * | 2022-10-27 | 2023-01-17 | 浙江远程智芯科技有限公司 | Control method, system and equipment of extended range electric vehicle and readable storage medium |
| CN116335796A (en) * | 2023-03-29 | 2023-06-27 | 中国第一汽车股份有限公司 | GPF regeneration control method, device and equipment for vehicle active gasoline particle catcher |
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| CN112555037A (en) * | 2020-12-08 | 2021-03-26 | 浙江吉利控股集团有限公司 | Control method and control system of range extender and vehicle |
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2021
- 2021-07-07 CN CN202110767638.8A patent/CN113513390A/en active Pending
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| JP2015202832A (en) * | 2014-04-16 | 2015-11-16 | トヨタ自動車株式会社 | hybrid vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114165344A (en) * | 2021-12-09 | 2022-03-11 | 安徽江淮汽车集团股份有限公司 | Hybrid vehicle type GPF active regeneration control method |
| CN115614132A (en) * | 2022-10-27 | 2023-01-17 | 浙江远程智芯科技有限公司 | Control method, system and equipment of extended range electric vehicle and readable storage medium |
| CN116335796A (en) * | 2023-03-29 | 2023-06-27 | 中国第一汽车股份有限公司 | GPF regeneration control method, device and equipment for vehicle active gasoline particle catcher |
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