CN106114495B - A kind of hybrid vehicle and its engine halt control method - Google Patents
A kind of hybrid vehicle and its engine halt control method Download PDFInfo
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- CN106114495B CN106114495B CN201610648054.8A CN201610648054A CN106114495B CN 106114495 B CN106114495 B CN 106114495B CN 201610648054 A CN201610648054 A CN 201610648054A CN 106114495 B CN106114495 B CN 106114495B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 238000005461 lubrication Methods 0.000 abstract description 3
- 239000000498 cooling water Substances 0.000 abstract description 2
- 238000011217 control strategy Methods 0.000 abstract 1
- 238000004886 process control Methods 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 4
- 230000008450 motivation Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/24—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the combustion engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
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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
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0676—Engine temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/068—Engine exhaust temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Hybrid Electric Vehicles (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
A kind of hybrid vehicle and its engine halt control method.The present invention proposes that a kind of engine of more perfect hybrid power system shuts down control strategy; judgement by increasing the conditions such as engine water temperature, turbine heel row temperature determines engine stopping process; BSG/ISG motor drag engine is used in stopping process, engine speed declines process control.The present invention solves engine start and stop in hybrid power system and excessively frequently results in engine cooling water and cannot work in normal range (NR); and it rapidly shuts down so that turbocharger of motor insufficient lubrication; cause carbon distribution inside booster serious; even scuffing of cylinder bore stroke watt; the problems such as serious is lost, engine performance and service life are improved.
Description
Technical field
This application involves a kind of shutdown of hybrid vehicle more particularly to its engine controls.
Background technique
Two hang-ups that World Auto Industry is faced at present are environmental pollution, petroleum resources scarcity, therefore, environmental protection and section
It can be an important development direction of 21 century automotive engineering, while the emission regulation of various countries is also increasingly stringent.Hybrid power vapour
Vehicle is exactly the clean energy vehicle of new generation with low pollution, low oil consumption.Hybrid vehicle refers to that automobile uses fuel oil
Drive and be driven by electricity two kinds of driving methods.When the advantages of hybrid vehicle is that vehicle launch stops, only being driven by motor,
It is not up to certain speed, engine does not just work, and therefore, just engine can be made to be always held at optimum condition state, dynamic property
Good, discharge amount is very low.Hybrid power assembly can be divided into tandem, parallel and series parallel type etc. three with the classification of power transmission route
Kind.
In general the starting motor of hybrid vehicle is divided into two classes, BSG and ISG.
BSG motor (Belt Starter and Generator)：Motor head belt transmission mechanism will be integrated
Change starter-generator to be connected with engine, instead of the original generator of engine, to realize hybrid power system
Integration.BSG hybrid power system quickly drags engine and turns to idling when being able to achieve idle stop (engine), vehicle launch
The effect that speed, braking recover energy.
ISG motor (Integrated Starter and Generator)：Automobile start power generation all-in-one machine, is directly integrated
It is exactly that traditional starting motor is directly substituted with the biggish motor of certain transient power, in the starting stage on engine spindle
Engine-driven car is substituted in short-term, and plays the role of starting engine simultaneously, reduces the idling loss and pollution of engine,
Normal when exercising, motor-powered vehicle, the motor disconnects or plays the role of generator, and when brake, which can be with
Regenerative electric power is played, the energy-saving effect of braking energy is recycled.
According to collected hybrid-power bus Real-road Driving Cycle data analysis shows：Engine dead time accounts for whole
The 30%~50% of a state of cyclic operation time when engine idling, causes the waste of fuel.Idle stop is hybrid power vapour
One of the key technology of vehicle fuel-economizing, idle stop control method can make hybrid vehicle in stationary vehicle or closing when sliding
Engine, so as to avoid engine long-play in oil consumption and the higher idle speed zone of noxious gas emission.
Notification number is the Chinese patent of 102514570B《A kind of series hybrid electric vehicle and its engine start-up and shut-down control side
Method, system》For series hybrid electric vehicle, propose to control engine start as start and stop condition according to power battery electricity
It shuts down, certain time idling is added to protect engine in stopping process.This engine start-up and shut-down control method avoids engine
In stopped process due to heat can not disseminate and cause engine friction pair overheat and be damaged or booster turbine shaft end by
In overheat cause discoloration, carbon deposit is serious phenomena such as, substantially increase the functional reliability of engine.But in the program only
It is proposed that idling, which is added, protects engine, does not propose how idling, and engine idling operation will increase system oil consumption, add
Burden is put in rearrangement.
In addition, in above-mentioned patent, however it remains following problems：
1, hybrid power system occur in actual moving process engine shut down it is excessively frequent, lead to engine cooling water
Water temperature over-high is too low；
2, quick shutdown also results in turbocharger because arranging warm excessively high, insufficient lubrication when engine big load, it is cooling not
Foot affects engine life so that carbon distribution is serious in turbocharger, damaging engine even catches fire.
Summary of the invention
To overcome defect existing in the prior art, the application proposes a kind of hybrid vehicle and the engine of the automobile
Halt control method.
The purpose of the present invention is what is be achieved through the following technical solutions.
A kind of hybrid power system, including engine, motor, information acquisition unit, hybrid controller, hybrid power
Controller is based on engine water temperature progress engine and shuts down control, also carries out engine shutdown control based on turbine heel row temperature.
Preferably, the hybrid controller shuts down to control based on engine water temperature progress engine is specifically：According to
Engine water temperature and engine speed decline curve, HCU control motor drag engine speed are gradually reduced according to curve.
Preferably, the curve is according to engine current water temperature and engine current rotating speed, determining engine water temperature
Whole process engine water temperature reaches the water temperature value of engine work range when T_water falls to 0 with engine speed n
The curve of (T1_water≤T_water≤T2_water).
Preferably, during engine speed declines, it must assure that turbine heel row temperature is low under each engine speed
In limit value, HCU control motor drag engine is needed to maintain current rotating speed until turbine heel row temperature is lower than limit if being higher than the limit value
Value.
In addition, correspondingly, the present invention also provides a kind of engine halt control methods.Refer to when receiving engine shutdown
After order, following steps are executed：
A) determine engine water temperature；
B engine speed) is controlled based on engine speed-water temperature curve, until engine is shut down.
Preferably, in step B), it is also contemplated that turbine heel row temperature.
Preferably, described to be referred to based on engine speed-water temperature curve control engine speed, according to engine water temperature with
Engine speed decline curve, HCU control motor drag engine speed are gradually reduced according to curve.
The advantage of the invention is that：
1, determine engine speed with water temperature and turbine by monitoring engine water temperature, engine speed, turbine heel row temperature
The curve of heel row temperature decline, that is, determine engine stopping process；One is to ensure that engine water temperature is not too high when engine is shut down
Or it is too low, second is that guaranteeing that turbocharger lubrication and cooling are good in stopping process, stop third is that avoiding engine to a certain degree
The excessively frequent problem of machine.
2, engine stopping process keeps engine speed decline controllable by BSG/ISG motor drag, while reducing engine
Idling process reduces discharge.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
The hybrid electric vehicle engine that attached drawing 1 shows embodiment according to the present invention shuts down flow chart.
Attached drawing 2 shows illustrative engine and shuts down control temperature curve.
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to thoroughly understand the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The range opened is fully disclosed to those skilled in the art.
Embodiment according to the present invention proposes a kind of hybrid power system comprising engine, motor, information collection
Unit, hybrid controller.Wherein, hybrid controller carries out engine water temperature judgement, and carries out engine and shut down control
System.In addition, hybrid controller determines to carry out engine control also according to turbine heel row temperature.
Engine water temperature decision condition is as follows：According to engine current water temperature and engine current rotating speed, a hair is determined
Whole process engine water temperature reaches engine work range when motivation water temperature T _ water falls to 0 with engine speed n
Water temperature value (T1_water≤T_water≤T2_water) curve.Wherein, T1_water and T2_water is engine water
Temperature work upper lower limit value.
Wherein, turbine heel row temperature is judged to having to be lower than turbine highest row's temperature value according to engine calls turbine heel row temperature
T3_ turbine.Turbine heel row temperature must not exceed the limit value in stopping process.
Specifically control process is：According to engine water temperature and engine speed decline curve, HCU controls BSG/ISG electricity
Machine dragging engine speed is gradually reduced according to curve.It, must under each engine speed during engine speed decline
It must ensure that turbine heel row temperature lower than limit value, needs HCU control BSG/ISG motor drag engine to remain current if being higher than the limit value
Revolving speed is until turbine heel row temperature is lower than after limit value, and HCU control BSG/ISG motor drag engine speed continues to decline, until hair
Motivation is shut down.
Referring to Fig. 1, the present invention also provides a kind of engine controls to work as vehicle when engine is in operating condition
Controller (HCU) issue engine halt instruction when, first progress engine water temperature and turbine heel row temperature determine, then further according to
Determine that situation determines specific control measure.If the mild turbine heel row temperature of engine water conforms to a predetermined condition, engine is controlled
It shuts down.
Wherein, engine water temperature decision condition is as follows：According to engine current water temperature and engine current rotating speed, one is determined
Whole process engine water temperature reaches engine work when engine water temperature T_water falls to 0 with engine speed n
The curve of the water temperature value (T1_water≤T_water≤T2_water) of range.Wherein, T1_water and T2_water is to start
Machine water temperature work upper lower limit value.
Wherein, turbine heel row temperature is judged to having to be lower than turbine highest row's temperature value according to engine calls turbine heel row temperature
T3_ turbine.Turbine heel row temperature must not exceed the limit value in stopping process.
Specifically control process is：According to engine water temperature and engine speed decline curve, HCU controls BSG/ISG electricity
Machine dragging engine speed is gradually reduced according to curve.It, must under each engine speed during engine speed decline
It must ensure that turbine heel row temperature lower than limit value, needs HCU control BSG/ISG motor drag engine to remain current if being higher than the limit value
Revolving speed is until turbine heel row temperature is lower than after limit value, and HCU control BSG/ISG motor drag engine speed continues to decline, until hair
Motivation is shut down.
Exemplary illustration is done to above-mentioned control process now in conjunction with Fig. 2：
Referring to fig. 2, it is assumed that engine water temperature normal range of operation is at 85 DEG C -95 DEG C, stopping process engine current rotating speed
Lower engine water temperature is 98 DEG C；It is assumed that the limitation of turbine heel row temperature requires to be 760 DEG C.It is bent according to the two dimension of engine speed water temperature
Line, BSG/ISG are 98 DEG C with the water temperature that engine needs to maintain at current rotating speed n1, if engine water temperature is at this time≤and 98
DEG C, entire car controller (HCU) judges whether present engine turbine heel row temperature is higher than 760 DEG C, if row's temperature is higher than limit temperature
Need BSG/ISG motor band engine maintain current rotating speed, prevent engine speed decline it is too fast cause turbine heel row temperature be higher than set
Definite value；Continue to decline lower than BSG/ISG motor band engine speed if limit temperature if row's temperature.It repeats the above process, until hair
Motivation revolving speed is 0, and engine stopping process terminates.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention answers the protection model with claim
Subject to enclosing.
Claims (4)
1. a kind of hybrid power system, including engine, motor, information acquisition unit, hybrid controller, feature exist
In hybrid controller is based on the mild turbine heel row temperature of engine water and carries out engine shutdown control；
The hybrid controller is based on engine water temperature progress engine shutdown control：According to engine water temperature with
Engine speed decline curve, HCU control motor drag engine speed are gradually reduced according to curve；Decline in engine speed
In the process, it must assure that turbine heel row temperature lower than limit value, needs HCU control electricity if being higher than the limit value under each engine speed
Machine drags engine and maintains current rotating speed until turbine heel row temperature is lower than limit value.
2. a kind of engine control, which is characterized in that after receiving engine halt instruction, execute following steps：
A) determine engine water temperature；
B it) is based on engine speed-water temperature curve and turbine heel row temperature control engine speed, until engine is shut down；
It is described to be referred to based on engine speed-water temperature curve control engine speed, according to engine water temperature and engine speed
Decline curve, HCU control motor drag engine speed are gradually reduced according to curve；
During engine speed decline, turbine heel row temperature must assure that under each engine speed lower than limit value, if high
HCU control motor drag engine is then needed to maintain current rotating speed until turbine heel row temperature is lower than limit value in the limit value.
3. a kind of hybrid vehicle comprising hybrid power system as described in claim 1.
4. a kind of engine control system comprising controller, the controller are able to carry out controlling party as claimed in claim 2
Method.
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| CN201610648054.8A CN106114495B (en) | 2016-08-09 | 2016-08-09 | A kind of hybrid vehicle and its engine halt control method |
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| CN201610648054.8A CN106114495B (en) | 2016-08-09 | 2016-08-09 | A kind of hybrid vehicle and its engine halt control method |
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| CN109572667B (en) * | 2017-09-29 | 2021-05-14 | 比亚迪股份有限公司 | Hybrid vehicle and engine stop control method and system thereof |
| CN108561256A (en) * | 2018-03-29 | 2018-09-21 | 吉利汽车研究院（宁波）有限公司 | Method for starting-controlling, the apparatus and system of light mixing system |
| CN110654371A (en) * | 2018-06-29 | 2020-01-07 | 比亚迪股份有限公司 | Control method and device of vehicle power system and vehicle |
| CN114776429A (en) * | 2022-04-08 | 2022-07-22 | 广西玉柴机器股份有限公司 | Hybrid system integrating electronic water pump and dragging-backward cooling supercharger and control method |
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| CN103260985A (en) * | 2010-12-22 | 2013-08-21 | 丰田自动车株式会社 | Vehicle, method for controlling vehicle, and device for controlling vehicle |
| CN104421025A (en) * | 2013-09-11 | 2015-03-18 | 上海汽车集团股份有限公司 | Method for controlling DFCO (Deceleration Fuel Cut Off) of HEV (Hybrid Electric Vehicle) |
| CN105235679A (en) * | 2014-05-29 | 2016-01-13 | 上海汽车集团股份有限公司 | Method and apparatus for shutdown control of vehicle engine |
| CN104648378A (en) * | 2014-12-31 | 2015-05-27 | 重庆长安汽车股份有限公司 | Control method for power system of hybrid electric vehicle |
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