CN109835324B - Method for identifying abnormal flameout of engine of series-parallel plug-in hybrid electric vehicle - Google Patents
Method for identifying abnormal flameout of engine of series-parallel plug-in hybrid electric vehicle Download PDFInfo
- Publication number
- CN109835324B CN109835324B CN201910138728.3A CN201910138728A CN109835324B CN 109835324 B CN109835324 B CN 109835324B CN 201910138728 A CN201910138728 A CN 201910138728A CN 109835324 B CN109835324 B CN 109835324B
- Authority
- CN
- China
- Prior art keywords
- engine
- vehicle
- abnormal
- series
- generator
- 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
- 230000002159 abnormal effect Effects 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005265 energy consumption Methods 0.000 claims description 3
- 238000003912 environmental pollution Methods 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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
The invention discloses a method for identifying abnormal flameout of an engine of a series-parallel plug-in hybrid electric vehicle, which comprises the following steps: in thatUnder the condition that the current state of the vehicle meets the abnormal flameout recognition condition of the engine, if the vehicle is in a series working mode, the vehicle control unit calculates the actual consumed energy E of the generator within the set time t, and then judges whether the E is greater than the set consumed energy threshold E of the generator in the normal working state of the engine0If yes, judging that the engine is in an abnormal flameout state; if the vehicle is in a parallel working mode, no brake is generated and the accelerator pedal is pressed down, the vehicle control unit calculates the torque Tq required by the motor end of the driverdrvThen, whether Tq is determineddrvIs less than the actual output torque Tq of the driving motormotWith a set torque threshold T0Difference between them, and maintaining the set time threshold t0And if so, judging that the engine is in an abnormal flameout state. The abnormal flameout state of the engine can be rapidly and accurately identified through the method and the device.
Description
Technical Field
The invention belongs to the field of plug-in hybrid electric vehicles, and particularly relates to an engine abnormal flameout recognition method for a series-parallel plug-in hybrid electric vehicle.
Background
The increasing severity of energy crisis and environmental pollution problems makes new energy vehicles a necessary trend for the automotive industry to change. The plug-in hybrid electric vehicle has the advantages of a pure electric vehicle and a hybrid electric vehicle, can be charged through an external power grid, and can ensure the endurance mileage of the vehicle; and thus has received a high degree of attention from automobile enterprises and research institutes.
The abnormal flameout of the engine of the series-parallel plug-in hybrid electric vehicle can cause the engine to be changed from a power source to a load, so that the energy consumption of the whole vehicle is obviously increased, and the abnormal state is timely and effectively identified on the premise of controlling the abnormal state. At present, no method for effectively identifying abnormal flameout of an engine of a series-parallel plug-in hybrid electric vehicle exists.
Disclosure of Invention
The invention aims to provide an engine abnormal flameout recognition method of a series-parallel plug-in hybrid electric vehicle, which is used for quickly and accurately recognizing the abnormal flameout state of an engine.
The invention relates to a method for identifying abnormal flameout of an engine of a series-parallel plug-in hybrid electric vehicle, which comprises the following steps: under the condition that the current state of the Vehicle meets the condition of identifying abnormal flameout of the engine, if the Vehicle is in a series working mode, a Vehicle Control Unit (VCU) calculates the actual consumed energy E of the generator within a set time t, and then judges whether the actual consumed energy E of the generator is greater than the consumed energy threshold E of the generator in the set normal working state of the engine or not0If the current state of the vehicle meets the abnormal flameout recognition condition of the engine, if the vehicle is in a parallel working mode, no brake is generated and an accelerator pedal is pressed down, the vehicle controller calculates the torque Tq required by the motor end of the driver according to the opening α of the accelerator pedal and the speed upsilon of the vehicledrvAnd then judges whether or not the driver motor-side required torque Tq isdrvIs less than the actual output torque Tq of the driving motormotWith a set torque threshold T0Difference between them, and maintaining the set time threshold t0If yes, the engine is judged to be in an abnormal flameout state, and if not, the engine is judged not to be in the abnormal flameout state.
If the engine is in the starting process, or the engine is in the stopping process, or the SOC of the battery is more than a set first charge threshold epsilon1Or battery charging capability PchrgLess than a predetermined threshold value P of the charging capacity0And the SOC of the battery is more than a set second charge threshold epsilon2It means that the current state of the vehicle does not satisfy the engine abnormal shut-off recognition condition.
The method for calculating the actual consumed energy E of the generator within the set time t by the vehicle control unit is as follows: using formulas
Calculating to obtain E (i.e. using the actual torque T of the generatorqCalculating the actual power P of the generator according to the actual speed n of the generatorwrThen the actual power P to the generator in the set time twrIntegration is performed to obtain E).
The set time t is greater than the time consumed when the engine is normally started.
By adopting the method for identifying the abnormal flameout of the engine, the abnormal flameout state of the engine can be quickly and accurately identified in time and effectively under the serial and parallel modes of the series-parallel plug-in hybrid electric vehicle respectively, the normal and stable running of the whole vehicle can be ensured, and the energy consumption economy of the whole vehicle is improved.
Drawings
Fig. 1 is a flow chart of engine abnormal flameout recognition of a series-parallel plug-in hybrid electric vehicle according to the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The method for identifying an engine abnormal shut-off of a series-parallel plug-in hybrid electric vehicle shown in fig. 1 includes:
firstly, the vehicle control unit judges whether the engine is in a starting process or in a stopping process or the SOC of a battery is larger than a set first charge threshold epsilon1Or battery charging capability PchrgLess than a predetermined threshold value P of the charging capacity0And the SOC of the battery is more than a set second charge threshold epsilon2If so, indicating that the current state of the vehicle does not meet the identification condition of abnormal flameout of the engine, and continuing to execute the first step, otherwise (namely the current state of the vehicle meets the identification condition of abnormal flameout of the engine) executing the second step;
secondly, the vehicle controller judges the working mode of the vehicle, if the vehicle is in a series working mode, the third step is executed, and if the vehicle is in a parallel working mode, the fifth step is executed;
thirdly, the vehicle controller utilizes a formula
Calculating the actual consumed energy E of the generator within a set time t (which is longer than the time consumed when the engine is normally started), and then executing the fourth step;
fourthly, the vehicle control unit judges whether the actual consumed energy E of the generator is larger than the set consumed energy threshold E of the generator under the normal working state of the engine0If so, judging that the engine is in an abnormal flameout state, and then ending, otherwise, judging that the engine is not in the abnormal flameout state, and then returning to execute the third step;
step five, the vehicle controller judges whether the vehicle is braked or not and an accelerator pedal is stepped on, if so, the sixth step is executed, otherwise, the fifth step is continuously executed;
sixthly, the vehicle controller calculates the required torque Tq of the motor end of the driver according to the opening α of the accelerator pedal and the speed upsilon of the vehicledrvThen, the seventh step is executed;
seventhly, the vehicle control unit judges whether the torque Tq required by the motor end of the driver is requireddrvIs less than the actual output torque Tq of the driving motormotWith a set torque threshold T0Difference between them, and maintaining the set time threshold t0And if so, determining that the engine is in an abnormal flameout state and then ending, otherwise, determining that the engine is not in the abnormal flameout state and then returning to execute the sixth step.
Wherein, PwrRepresenting the actual power of the generator, TqRepresenting the actual torque of the generator, n representing the actual rotational speed of the generator: t isq、n、α、υ、TqmotEngine state (i.e., engine start, stop signal), battery SOC, and battery charging capability PchrgAre acquired from the CAN bus by the vehicle controller.
Claims (4)
1. An engine abnormal flameout recognition method of a series-parallel plug-in hybrid electric vehicle is characterized by comprising the following steps: under the condition that the current state of the vehicle meets the abnormal flameout recognition condition of the engine, if the vehicle is in a series working mode, the vehicle control unit calculates the actual consumed energy E of the generator within the set time t, and then judges the actual consumed energy E of the generatorWhether the quantity E is larger than a set energy consumption threshold E of the generator under the normal working state of the engine0If the current state of the vehicle meets the abnormal flameout recognition condition of the engine, if the vehicle is in a parallel working mode, no brake is generated and an accelerator pedal is pressed down, the vehicle controller calculates the torque Tq required by the motor end of the driver according to the opening α of the accelerator pedal and the speed upsilon of the vehicledrvAnd then judges whether or not the driver motor-side required torque Tq isdrvIs less than the actual output torque Tq of the driving motormotWith a set torque threshold T0Difference between them, and maintaining the set time threshold t0If yes, the engine is judged to be in an abnormal flameout state, and if not, the engine is judged not to be in the abnormal flameout state.
2. The method of identifying an engine abnormal shut-off of a series-parallel plug-in hybrid vehicle according to claim 1, characterized in that: if the engine is in the starting process, or the engine is in the stopping process, or the SOC of the battery is more than a set first charge threshold epsilon1Or battery charging capability PchrgLess than a predetermined threshold value P of the charging capacity0And the SOC of the battery is more than a set second charge threshold epsilon2It means that the current state of the vehicle does not satisfy the engine abnormal shut-off recognition condition.
3. The method of identifying an engine abnormal shut-off of a series-parallel plug-in hybrid vehicle according to claim 2, characterized in that: the vehicle control unit utilizes a formula
Calculating to obtain the actual consumed energy E of the generator within the set time t; wherein, PwrRepresenting the actual power of the generator, TqRepresenting the actual torque of the generator and n representing the actual rotational speed of the generator.
4. The method of identifying an engine abnormal shut down of a series-parallel plug-in hybrid electric vehicle according to claim 1, 2 or 3, characterized in that: the set time t is greater than the time consumed when the engine is normally started.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910138728.3A CN109835324B (en) | 2019-02-25 | 2019-02-25 | Method for identifying abnormal flameout of engine of series-parallel plug-in hybrid electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910138728.3A CN109835324B (en) | 2019-02-25 | 2019-02-25 | Method for identifying abnormal flameout of engine of series-parallel plug-in hybrid electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109835324A CN109835324A (en) | 2019-06-04 |
| CN109835324B true CN109835324B (en) | 2020-07-03 |
Family
ID=66884860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910138728.3A Active CN109835324B (en) | 2019-02-25 | 2019-02-25 | Method for identifying abnormal flameout of engine of series-parallel plug-in hybrid electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109835324B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446396B (en) * | 2021-09-02 | 2022-01-04 | 盛瑞传动股份有限公司 | Gear shifting control method, gear shifting control device and storage medium |
| CN113864073B (en) * | 2021-09-28 | 2023-05-23 | 重庆长安新能源汽车科技有限公司 | Control method and system for oxygen sensor diagnosis of extended range hybrid electric vehicle |
| CN115306550B (en) * | 2022-08-05 | 2024-04-12 | 联合汽车电子有限公司 | Cylinder cleaning method and device for hybrid electric vehicle, storage medium and equipment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3774899B2 (en) * | 1999-08-02 | 2006-05-17 | マツダ株式会社 | Hybrid vehicle powertrain failure judgment device |
| JP4123254B2 (en) * | 2005-07-27 | 2008-07-23 | トヨタ自動車株式会社 | Internal combustion engine misfire determination device and internal combustion engine misfire determination method |
| KR101339233B1 (en) * | 2011-12-01 | 2013-12-09 | 기아자동차 주식회사 | System and method for determining stop status of hev engine |
| CN107380170B (en) * | 2017-06-12 | 2019-12-31 | 中国第一汽车股份有限公司 | Hybrid Vehicle Engine State Monitoring and Troubleshooting Method |
| CN109017753B (en) * | 2018-08-15 | 2020-03-31 | 科力远混合动力技术有限公司 | Power-split hybrid electric vehicle engine torque fault diagnosis and fault-tolerant control method |
| CN109263656B (en) * | 2018-08-22 | 2020-11-27 | 科力远混合动力技术有限公司 | Fire coordination diagnosis method for engine of hybrid electric vehicle |
-
2019
- 2019-02-25 CN CN201910138728.3A patent/CN109835324B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109835324A (en) | 2019-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108944900B (en) | Fuel cell automobile energy management control method | |
| CN111873983B (en) | Method and device for controlling torque of hybrid electric vehicle and hybrid electric vehicle | |
| CN103029701B (en) | The driving control device of series hybrid vehicle | |
| CN204236461U (en) | For controlling the system of hybrid electric vehicle (HEV) power system used | |
| CN101342901B (en) | Method for controlling idle stop mode in hybrid electric vehicle | |
| CN101478172B (en) | Method for determining optimal operation point with respect to state of charge in hybrid electric vehicle | |
| CN107303906B (en) | Apparatus and method for controlling engine clutch of hybrid vehicle | |
| CN106541834A (en) | A kind of method that regulation and control extended-range forerunner mixes electrical automobile braking torque | |
| US10086824B2 (en) | Method and apparatus of determining performance for battery for mild hybrid electric vehicle | |
| CN109835324B (en) | Method for identifying abnormal flameout of engine of series-parallel plug-in hybrid electric vehicle | |
| CN103465790A (en) | Apparatus and method of controlling motor torque for environment friendly vehicle | |
| MX2012003116A (en) | Method of providing assistance for a hybrid vehicle based on user input. | |
| CN1974285A (en) | Regenerating brake control method for mixed power automobile | |
| US20150183418A1 (en) | Apparatus and method for controlling full load mode of hybrid electric vehicle | |
| KR101927180B1 (en) | Method and apparatus for charging auxiliary battery of vehicle including driving motor | |
| CN109240125B (en) | Method for calculating two-shaft required torque of gearbox of hybrid vehicle | |
| CN107458371B (en) | Method for controlling torque reduction of hybrid vehicle | |
| CN104554266A (en) | Dynamic mapping of pedal position to wheel output demand in a hybrid vehicle | |
| CN106467104B (en) | Method and apparatus for controlling engine start of hybrid electric vehicle | |
| CN110422050A (en) | A kind of electric car sliding brake function energy reclaiming method | |
| CN106427527A (en) | Tractor extended range control method, control device and hydraulic power system thereof | |
| CN111878244B (en) | A 48V hybrid electrical system | |
| WO2024017152A1 (en) | Control method and apparatus for hybrid electric vehicle, and vehicle and medium | |
| CN203974582U (en) | A kind of series parallel type gas-electricity hybrid power coach | |
| CN111806242A (en) | Hybrid electric vehicle braking energy recovery method and hybrid electric vehicle |
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 | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee after: Deep Blue Automotive Technology Co.,Ltd. Address before: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee before: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |