CN108725443A - New-energy automobile and its engine start control method - Google Patents
New-energy automobile and its engine start control method Download PDFInfo
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- CN108725443A CN108725443A CN201810542940.1A CN201810542940A CN108725443A CN 108725443 A CN108725443 A CN 108725443A CN 201810542940 A CN201810542940 A CN 201810542940A CN 108725443 A CN108725443 A CN 108725443A
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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
- 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
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18063—Creeping
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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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
-
- 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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of 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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- 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
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/15—Control strategies specially adapted for achieving a particular effect
-
- 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
- B60W30/182—Selecting between different operative modes, e.g. comfort and performance modes
-
- 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
- B60W2710/02—Clutches
- B60W2710/021—Clutch engagement state
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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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
-
- 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
- B60W2710/0666—Engine torque
-
- 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
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
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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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Hybrid Electric Vehicles (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The present invention provides a kind of engine start control methods of new-energy automobile, under crawling pattern, clutch in double clutch gearbox is in sliding wear state, when starting the engine, engine clutch controller control engine clutch is first passed through gradually to combine, gradual output torque in engine clutch cohesive process, set the target torque that a target torque drives engine action as engine clutch, the process of torque output drives engine speed to increase by the sliding wear of engine clutch, after the output torque of engine clutch is stablized to target torque, the rotating speed of engine rises to preset rotation speed value, the igniting of control engine oil spout at this time, due to the sliding wear state of double clutch gearbox and engine clutch, therefore it can effectively avoid the impact of power output generation after engine start, improve driver comfort.The present invention also provides a kind of new-energy automobiles.
Description
Technical field
The present invention relates to technical field of new energy, more specifically to a kind of new-energy automobile and its engine
Method for starting-controlling.
Background technology
With the development of new-energy automobile technology, plug-in hybrid-power automobile had both had in certain pure motor driving
Journey, being capable of energy-saving and emission-reduction to greatest extent；Long-distance running can be carried out for battery charging, solve in driving using engine again
The problem of journey anxiety, plug-in hybrid-power automobile have become new-energy automobile type most popular in the market.
With engine, double clutch gearbox and motor are the new-energy automobile of main parts size due in shift process
The advantages that not having power loss, capable of giving full play to the ability of power assembly, has become a kind of important hybrid vehicle
Type.Due to the advantages that motor speed control is steady, and torque responsive is fast, the crawling function of hybrid vehicle passes through electricity at present
Machine is realized.Crawling pattern full name is low cruise driving assistance system, and engine can voluntarily be controlled for torque by referring to automobile
Output, speed change system, brake can make the slowly speed of automobile pass through severe road surface.
But when power battery electricity is relatively low, need to start engine during crawling to be that power battery charging remains compacted
The required battery capacity of row, and the poor problem of sexual experience is driven caused by starting the impact that engine is brought during crawling,
It is always one of hybrid vehicle problem to be solved.
Therefore, how to solve to impact caused by starting engine during crawling, be current those skilled in the art urgently
It solves the problems, such as.
Invention content
In view of this, the present invention provides a kind of engine start control methods of new-energy automobile, to solve crawling
It is impacted caused by starting engine in journey；The present invention also provides a kind of new-energy automobiles.
In order to achieve the above object, the present invention provides the following technical solutions：
A kind of engine start control method of new-energy automobile, the torque for realizing motor to engine switch, including：
Step 1), when needing to start engine under crawling pattern, engine clutch controller controls engine clutch
It gradually combines, until the output torque of the engine clutch controller is stablized to target torque；
Step 2) controls the engine oil spout igniting when the rotating speed of the engine rises to preset rotation speed value.
Preferably, further include step 1.1), full-vehicle control in above-mentioned engine start control method, before the step 1)
Whether device judges whether vehicle is in crawling pattern, and need to start engine, if so, entering step 1).
Preferably, further include step 1.2) before the step 1), at vehicle in above-mentioned engine start control method
In the crawling pattern and when need to start engine, the entire car controller maintains the crawling pattern, and starts described in asking
Machine clutch controller exports requested torque.
Preferably, in above-mentioned engine start control method, the rotating speed of the engine by speed change box clutch cunning
Grinding belt is dynamic to rise to preset rotation speed value.
Preferably, further include step 2.1) after the step 2), when the hair in above-mentioned engine start control method
After motivation is lighted a fire successfully, starts management system to carry out rotating speed control to the engine, control the control rotating speed of the engine
It is synchronous with the working speed of the motor.
Preferably, further include step 2.2) after the step 2.1) in above-mentioned engine start control method, it is described whole
Vehicle controller asks engine clutch described in the engine clutch controller quick-make, and in the engine clutch
It after device controller feeds back closure signal, realizes that engine switches to torque control mode, completes engine start control.
Preferably, in above-mentioned engine start control method, the step 2) further includes detecting the engine shape
Whether state, the engine speed and engine oil spout igniting zone bit information meet predetermined condition, if it is, judgement
The engine oil spout is lighted a fire successfully；If it is not, then into fault diagnosis process flow.
Preferably, in above-mentioned engine start control method, the closure signal moves for the engine clutch
To the information of closed position.
Preferably, in above-mentioned engine start control method, the rotating speed control includes the control for setting the engine
The first threshold of the speed discrepancy of the working speed of rotating speed processed and the motor, when the rotating speed of the engine and the motor
When difference is less than or equal to the first threshold, judge that the engine is synchronous with the motor speed.
A kind of new-energy automobile, is provided with motor and engine, and the motor and the engine are being wriggled
Torque switching method under pattern uses the engine start control method of the new-energy automobile described in any one as above.
The engine start control method of new-energy automobile provided by the invention realizes that the torque of motor to engine is cut
Change, including step 1), when needed under crawling pattern start engine when, engine clutch controller control engine clutch by
It gradually combines, until the output torque of engine clutch controller is stablized to target torque；Step 2), when on the rotating speed of engine
When rising to preset rotation speed value, control engine oil spout igniting.Under crawling pattern, electric motor of automobile is in rotating speed control mode, at this time
Clutch in double clutch gearbox controller control double clutch gearbox is in sliding wear state, when starting the engine,
Engine clutch controller control engine clutch is first passed through gradually to combine, it is gradually defeated in engine clutch cohesive process
Go out torque, set the target torque that a target torque drives engine action as engine clutch, the process of torque output is logical
The sliding wear for crossing engine clutch drives engine speed to increase, when the output torque of engine clutch is stablized to target torque
Afterwards, the rotating speed of engine rises to preset rotation speed value, controls engine oil spout igniting at this time, utilizes double clutch gearbox and hair
The sliding wear state of motivation clutch can effectively avoid the impact of power output generation after engine start, meanwhile, utilize crawling
Cheng Zhong, generator speed control stronger noiseproof feature, when encountering load variation, can quick regulation motor rotating speed, carry
High driver comfort.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
The dynamical system layout structure of the engine start control method of Fig. 1 new-energy automobiles provided by the invention is illustrated
Figure；
Fig. 2 is the control flow chart of the engine start control method of new-energy automobile provided by the invention.
Specific implementation mode
The invention discloses a kind of engine start control methods of new-energy automobile, solve crawling and start hair in the process
Impact caused by motivation；The present invention also provides a kind of new-energy automobiles.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Whole description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
The embodiment of the present invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
As depicted in figs. 1 and 2, the dynamical system of the engine start control method of Fig. 1 new-energy automobiles provided by the invention
System layout structure schematic diagram；Fig. 2 is the control flow chart of the engine start control method of new-energy automobile provided by the invention.
A kind of engine start control method of new-energy automobile is present embodiments provided, realizes motor to engine
Torque switches, including：
S03:Step 1), when needed under crawling pattern start engine when, engine clutch controller control engine from
Clutch gradually combines, until the output torque of engine clutch controller is stablized to target torque.
S04:Step 2), when the rotating speed of engine rises to preset rotation speed value, control engine oil spout igniting.
The power system components of new-energy automobile generally comprise 1, engine management system 5 of an internal combustion engine
(abbreviation EMS, Energy Management System), 2, engine clutch controllers 6 of engine clutch are (referred to as
ACU, full name Actuator ControlUnit, it is understood that be coupling mechanism controller, Uniform Name is acted on to characterize it
For engine clutch controller), a motor 3, motor controllers 7 (an abbreviation IPU, full name Intelligent
Power Unit, intelligent power control unit, generally refer in particular to electric machine controller), double clutch gearbox 4, one it is double from
Clutch controller 8 (abbreviation TCU, Transmission Control Unit) and entire car controller 9 (abbreviation VCU,
Vehicle Control Unit)。
Under crawling pattern, electric motor of automobile is in rotating speed control mode, double clutch gearbox controller control at this time it is double from
Clutch in clutch gearbox is in sliding wear state, when starting engine, first passes through engine clutch controller control hair
Motivation clutch gradually combines, and gradual output torque in engine clutch cohesive process sets a target torque as engine
Clutch drives the target torque of engine action, the process of torque output to drive engine by the sliding wear of engine clutch
Rotating speed increases, and after the output torque of engine clutch is stablized to target torque, the rotating speed of engine rises to preset rotation speed
Value controls engine oil spout igniting, using the sliding wear state of double clutch gearbox and engine clutch, can effectively keep away at this time
Exempt from the impact that power output generates after engine start, meanwhile, during crawling, control of engine speed is stronger anti-dry
Disturb characteristic, when encountering load variation, can quick regulation motor rotating speed, improve driver comfort.
In one specific embodiment of this case, further include before the step 1)
S01:Whether step 1.1), entire car controller judge whether vehicle is in crawling pattern, and need to start engine,
If so, entering step 1).
Automobile is switched to mixed dynamic model formula by electric model under crawling pattern, and engine start provides power and supplements electricity.
Whether automobile enters crawling pattern needs is judged in advance by entire car controller, under crawling pattern, needs to judge that vehicle is simultaneously
No to need to start engine, the judgement of engine start includes the condition for allowing engine start, needs to start hair when meeting
It just can determine that when the condition of motivation and need to start engine.
In one specific embodiment of this case, further include before step 1)
S02:Step 1.2), when vehicle is in crawling pattern and need to start engine, entire car controller maintains crawling mould
Formula, and engine clutch controller is asked to export requested torque.
When entire car controller is according to the operating parameter of vehicle under crawling state, and determination needs starting engine, by vehicle
Controller maintains crawling pattern, is simultaneously emitted by the instruction of request engine clutch controller output requested torque, and engine exists
Reach certain working speed when working under requested torque, engine oil spout igniting generates smaller impact under the rotating speed, therefore asks
It asks the size of torque that can generate impact minimum value when oil spout is lighted a fire according to engine to be set, can also be reduced according to impact
The situation of kinetic equation loss minimum is set.
In one specific embodiment of this case, the rotating speed of engine rises to default turn by the sliding wear drive of engine clutch
Speed value.Engine clutch output torque drives engine to reach preset rotation speed value, for the vehicle of double clutch construction, starts
Gearbox is provided between machine clutch and engine, engine clutch output torque is transferred to engine by gearbox.
When needing to start engine, engine clutch controller control engine clutch enters sliding wear state, passes through engine
The sliding wear of clutch drives engine speed to rise, and engine clutch drives engine to work by sliding wear working condition, hair
The sliding wear state of motivation clutch has the characteristics that absorption dynamic impact, drives engine to reach preset rotation speed by sliding wear state
Value, the torque input side of engine clutch and torque outlet side rotating speed are close at this time, after the completion of engine ignition, engine and
Motor is in rotating speed control mode, by controlling the rotating speed difference of engine and motor, carries out the synchronism output of the two power.
In one specific embodiment of this case, further include after step 2)
S06:Step 2.1) starts management system to carry out rotating speed control, control to engine after engine ignition success
The control rotating speed of engine is synchronous with the working speed of motor.Engine reaches pre- by the drive of engine clutch output torque
If tachometer value, there are speed discrepancies for the working speed of engine speed and motor at this time, by starting management system to engine
Rotating speed control is carried out, using the working speed of motor as rotating speed of target, starts to manage on the control rotating speed of system adjustment engine
It rises so that the control rotating speed of engine is synchronous with the working speed of motor, can export power simultaneously both to ensure, meet
Vehicle power conveying requires.
Rotating speed control process is also set up synchronizes the decision procedure S07 that whether completes to rotating speed, by engine and electronic
The rotation speed monitoring of machine further ensures that rotating speed synchronism.
In one specific embodiment of this case, further include after step 2.1)
S08:Step 2.2), entire car controller ask engine clutch controller quick-make engine clutch, and
It after engine clutch controller feeds back closure signal, realizes that engine switches to torque control mode, completes engine and open
Dynamic control.
After motor is synchronous with the rotating speed of engine, entire car controller sends out control instruction, is controlled by engine clutch
Device control engine clutch is closed completely, and after closure signal feeds back to entire car controller, illustrates to realize engine work at this time
Normal access, realize dynamical stability transmit, engine starts to operate synchronously with motor when engine clutch is closed completely,
Hybrid vehicle is switched to the torque control mode controlled by engine by Electronic control, illustrates that engine completes pair at this time
The startup of vehicle controls.
In one specific embodiment of this case, step 2) further includes
S05:Whether detection engine condition, engine speed and engine oil spout igniting zone bit information meet predetermined item
Part, if it is, judgement engine oil spout is lighted a fire successfully；If it is not, then into fault diagnosis process flow.
After engine ignition success, moment of torsion control is carried out to looking into vehicle by engine, to ensure vehicle safety,
Ensure that engine is in normal mode of operation, while entire car controller confirms engine start control, needs to engine
It is normal be actuated for monitoring, by being to engine condition, engine speed and engine oil spout zone bit information etc. of lighting a fire
No to be satisfied by preset condition, judgement engine oil spout is lighted a fire successfully.By the self-check program, further increases crawling pattern and issue
Motivation starts the safety of work.Fault diagnosis process flow is set in vehicle simultaneously, when the start-up parameter due to engine not
Symbol when the case where causing engine start to fail, timely enters fault diagnosis process flow, into vehicle self-test or repair, into
One step improves vehicle safety.
In one specific embodiment of this case, closure signal is the information that engine clutch is moved to closed position.
In one specific embodiment of this case, rotating speed control includes the work of the control rotating speed and motor that set engine
The first threshold of the speed discrepancy of rotating speed, when the speed discrepancy of engine and motor is less than or equal to first threshold, judgement is started
Machine is synchronous with motor speed.After the completion of engine start, engine work drives its rotating speed to rise, and engine clutch is closed
The steady access for realizing engine power, in order to avoid generating impact in engine clutch closing course, in the control of engine
Rotating speed processed recloses engine clutch when rising to close with the working speed of motor.In judgement, engine is set
The difference range of the speed discrepancy of the working speed of rotating speed and motor is controlled, and is defined as first threshold, acquires the control of engine
The working speed of rotating speed and motor processed, when the difference both calculated is less than or equal to first threshold, illustrate at this time engine with
The rotating speed of motor synchronizes, at this time can closed engine clutch, both judgements synchronization action.By in engine clutch
In closing course, first threshold whether is in as the closure decision condition of engine clutch using speed discrepancy, is further kept away
Exempt from the impact in engine clutch closing course, improves driver comfort.
Engine is judged through clutch oil spout ignition procedure, and through successfully judgement of lighting a fire with multi-steps such as synchronous judgements
After success, it is finally switched to moment of torsion control, crawling pattern is completed and starts engine work.The above process further include to engine from
The decision procedure S09 whether clutch is closed, which can be judged by closure signal feedback information, no when being determined as, be led to
Fault detection program is crossed to be detected；When being judged to being, you can be switched to moment of torsion control, complete crawling and start engine.
Based on the engine start control method of the new-energy automobile provided in above-described embodiment, the present invention also provides one
New-energy automobile is planted, including motor and engine, the torque switching method of the motor and engine under wriggling pattern are
The engine start control method of the new-energy automobile provided in above-described embodiment.
Since the new-energy automobile uses the engine start control method of the new-energy automobile of above-described embodiment, so
The advantageous effect that the new-energy automobile is brought by the engine start control method of new-energy automobile please refers to above-described embodiment.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (10)
1. a kind of engine start control method of new-energy automobile, the torque for realizing motor to engine switches, feature
It is, including：
Step 1), when needing to start engine under crawling pattern, it is gradual that engine clutch controller controls engine clutch
In conjunction with until the output torque of the engine clutch controller is stablized to target torque；
Step 2) controls the engine oil spout igniting when the rotating speed of the engine rises to preset rotation speed value.
2. engine start control method according to claim 1, which is characterized in that further include step before the step 1)
1.1) whether, entire car controller judges whether vehicle is in crawling pattern, and need to start engine, if so, entering step
1)。
3. engine start control method according to claim 3, which is characterized in that further include step before the step 1)
1.2), when vehicle is in the crawling pattern and need to start engine, the entire car controller maintains the crawling pattern, and
Ask the engine clutch controller output requested torque.
4. engine start control method according to claim 1, which is characterized in that the rotating speed of the engine is by starting
The sliding wear drive of machine clutch rises to preset rotation speed value.
5. engine start control method according to claim 1, which is characterized in that further include step after the step 2)
2.1), after engine ignition success, start management system to carry out rotating speed control to the engine, start described in control
The control rotating speed of machine is synchronous with the working speed of the motor.
6. engine start control method according to claim 5, which is characterized in that further include step after the step 2.1)
It is rapid that 2.2) entire car controller asks engine clutch described in the engine clutch controller quick-make, and
After the engine clutch controller feedback closure signal, realizes that engine switches to torque control mode, complete engine
Start control.
7. engine start control method according to claim 1, which is characterized in that the step 2) further includes detecting
Whether the engine condition, the engine speed and engine oil spout igniting zone bit information meet predetermined condition,
If it is, judging that the engine oil spout is lighted a fire successfully；If it is not, then into fault diagnosis process flow.
8. engine start control method according to claim 6, which is characterized in that the closure signal is described starts
Machine clutch is moved to the information of closed position.
9. engine start control method according to claim 5, which is characterized in that the rotating speed control includes setting
The first threshold of the speed discrepancy of the control rotating speed of the engine and the working speed of the motor, when the engine and institute
When stating the speed discrepancy of motor less than or equal to the first threshold, judge that the engine is synchronous with the motor speed.
10. a kind of new-energy automobile, is provided with motor and engine, which is characterized in that the motor and the hair
Torque switching method of the motivation under wriggling pattern uses the hair of the new-energy automobile as described in any one of claim 1-9
Engine start control method.
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| CN201810542940.1A CN108725443A (en) | 2018-05-30 | 2018-05-30 | New-energy automobile and its engine start control method |
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| CN201810542940.1A CN108725443A (en) | 2018-05-30 | 2018-05-30 | New-energy automobile and its engine start control method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109532816A (en) * | 2018-12-27 | 2019-03-29 | 重庆长安汽车股份有限公司 | A kind of engine start control method for mixed power automobile |
| CN109808691A (en) * | 2019-03-26 | 2019-05-28 | 重庆长安新能源汽车科技有限公司 | Self-adapting cruise control method, system, device, storage medium and automobile |
| CN109915502A (en) * | 2019-01-28 | 2019-06-21 | 汉腾汽车有限公司 | A kind of AMT vehicle clutch start control method |
| CN110562238A (en) * | 2019-08-26 | 2019-12-13 | 海博瑞德（北京）汽车技术有限公司 | Automatic starting control method for engine of hybrid electric vehicle |
| CN112677958A (en) * | 2021-01-08 | 2021-04-20 | 重庆长安汽车股份有限公司 | Vehicle starting control method and system and vehicle |
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