CN106379312A - Continuous fuel cut-off control method for hybrid electric vehicle - Google Patents

Continuous fuel cut-off control method for hybrid electric vehicle Download PDF

Info

Publication number
CN106379312A
CN106379312A CN201610964067.6A CN201610964067A CN106379312A CN 106379312 A CN106379312 A CN 106379312A CN 201610964067 A CN201610964067 A CN 201610964067A CN 106379312 A CN106379312 A CN 106379312A
Authority
CN
China
Prior art keywords
electromotor
oil
break
hcu
fuel cut
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.)
Granted
Application number
CN201610964067.6A
Other languages
Chinese (zh)
Other versions
CN106379312B (en
Inventor
王博
钟发平
王晨
于海生
张彤
易显科
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangxi Dingsheng New Material Technology Co ltd
Original Assignee
Corun Hybrid Power Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Corun Hybrid Power Technology Co Ltd filed Critical Corun Hybrid Power Technology Co Ltd
Priority to CN201610964067.6A priority Critical patent/CN106379312B/en
Publication of CN106379312A publication Critical patent/CN106379312A/en
Application granted granted Critical
Publication of CN106379312B publication Critical patent/CN106379312B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
    • 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
    • B60W2510/24—Energy storage means
    • B60W2510/242—Energy storage means for electrical energy
    • 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
    • B60W2510/24—Energy storage means
    • B60W2510/242—Energy storage means for electrical energy
    • B60W2510/244—Charge state
    • 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
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • 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
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal speed
    • 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

Abstract

The invention provides a continuous fuel cut-off control method for a hybrid electric vehicle. An EMS transmits acquired fuel cut-off information, an actual output torque of the current engine and the engine cooling fluid temperature to an HCU; the HCU judges whether a primary continuous fuel cut-off requirement is true or not according to a gear position, a vehicle driving mode and a vehicle speed; if the primary continuous fuel cut-off requirement is true, the HCU sets an engine fuel cut-off requirement torque according to the actual output torque of the current engine and sends the torque to the EMS for execution, and sets the engine fuel cut-off requirement torque to be 0 when the actual output torque of the engine is less than or equal to E, and at the moment, the EMS controls fuel cut-off of the engine according to a set fuel cut-off control strategy; the HCU judges whether the fuel to the engine is cut off according to information fed by the EMS; if the fuel is cut off, the HCU triggers an HCU continuous fuel cut-off function and sends a continuous fuel cut-off instruction to the EMS; and the EMS controls the engine to be in a continuous fuel cut-off state until the HCU judges that the primary continuous fuel cut-off requirement is not true. The method provided by the invention can reduce the possibility of shaking of the vehicle and improve the driving comfort.

Description

Hybrid vehicle continues fuel cut-off control method
Technical field
The present invention relates to a kind of automobile continues fuel cut-off control method, continue oil-break control particularly to a kind of hybrid vehicle Method processed is it is adaptable to any hybrid vehicle that can carry out engine speed regulation using non-engine power.
Background technology
Nearly all at present traditional electro jet car all carries DECEL ENLEAN/recovery oil supply function, that is, under certain speed, When driver's release the gas pedal band gear slides, if engine speed is higher than certain setting value, EMS controls electromotor cut-out fuel oil to supply Should, now electromotor is in towing astern operating mode, and the presence of vehicle inertia is so that under engine speed is unlikely to quick because of oil-break Fall, when engine speed drops to another relatively low setting value, EMS controls electromotor to recover fuel feeding, it is to avoid electromotor band keeps off Flame-out phenomenon occurs, and brings unnecessary trouble to driver.
And with scientific development and social progress, environment and energy problem highlight, hybrid vehicle is increasingly becoming new energy The focus of source industry.Hybrid vehicle has the demand of oil-break when decelerating mode engine speed is relatively low, in this process, Engine speed no longer relies solely on vehicle inertia and maintains (except neutral), and the motor of hybrid power system can carry out electromotor Speed closed loop control keeps it in certain setting value；And hybrid vehicle also has the need keeping oil-break state in accelerating mode Ask.Specifically, hybrid vehicle may require that using lasting oil-break technology under three below operating mode：1) driver steps on acceleration Pedal is driven vehicle and is travelled with higher speed, and vehicle is in hybrid power operating mode, and (electromotor and motor provide energy to drive jointly Dynamic), when running into the situation needing to slow down, driver comes loose and steps on brake pedal after accelerator pedal or the accelerator pedal that comes loose, may Triggering continues oil-break function；2) motor vehicle driven by mixed power is in lasting oil-break state, during the light stepping on accelerator pedal of driver, continues to protect Lasting oil-break state, until engine speed rises to the desired value of system setting；3) hybrid power operating mode, electrokinetic cell has When overcharging risk, need to keep rotating speed by electromotor and continue the electric discharge of oil-break consumed energy；Pure electronic operating mode, vehicle is located for a long time In Brake energy recovery state, when leading to electrokinetic cell to overcharge risk, need engine speed to be pulled up to certain desired value simultaneously Enter the towing astern state electric discharge continuing oil-break.Lasting oil-break/recovery the fuel feeding of hybrid vehicle is in orthodox car oil-break/extensive Propose on the basis of multiple fuel feeding, the deceleration for solving hybrid vehicle continues oil-break, keeps oil-break state to accelerate and SOC The higher electrokinetic cell electric discharge waiting triggering.When it refers to that vehicle is in oil-break state, HCU judges some necessary conditions, draws After continuing the demand of oil-break, issue instructions to EMS, allow electromotor be always maintained at oil-break state；Need electromotor when HCU calculates Power is provided, then exits lasting oil-break state, recover fuel feeding, output torque.And the oil-break technology of existing orthodox car, for mixed For closing power vehicle, suffer from the drawback that：1) trigger continue oil-break function engine speed conditions set unreasonable so that Hybrid vehicle is difficult to enter lasting oil-break；2) trigger and do not have speed to limit in the condition continue oil-break, in relatively low speed, Hybrid vehicle does not have to slow down and continues the demand of oil-break；3) triggering does not have electromotor reality output in the condition continue oil-break The restriction of torque, enters the shake that fuel cut-off condition rear engine torque mutation leads to car load；4) do not account for oil-break function frequent Switching, leads to ride comfort poor；5) existing oil-break technology does not consider the SOC state of hybrid vehicle, electrokinetic cell voltage, shelves Position situation, charge requirement and halt condition.How fuel cut-off control is carried out so that vehicle is not shaken to hybrid vehicle, carry High driver comfort, just becomes a current important topic.
Content of the invention
The present invention is intended to provide one kind can reduce vehicle shake probability, solve slow and system effectiveness of slowing down during loose accelerator pedal The hybrid vehicle of low problem continues fuel cut-off control method.
The present invention is realized by below scheme：
A kind of hybrid vehicle continues fuel cut-off control method, and EMS is that the oil-break collected is believed by engine management system It is hybrid power control unit that breath, present engine reality output torque and engine water temperature are transferred to HCU, HCU synthesis gear, Vehicle driving patterns and speed judge tentatively to continue whether oil-break demand is set up, if tentatively continue oil-break demand setting up, HCU root Electromotor oil-break demand torque is set according to present engine reality output torque and sends it to EMS execution, until electromotor When reality output torque is less than or equal to E, electromotor oil-break demand torque is set to 0, and wherein E is can be directly by electromotor oil-break Demand torque is set to 0 and the electromotor reality output lower torque value do not shaken of vehicle, and now EMS is according to the oil-break control of agreement Policy control electromotor oil-break processed, whether HCU judges electromotor oil-break according to EMS feedack, if HCU is judged as It is that then triggering HCU continues oil-break function and the instruction of lasting oil-break is sent to EMS, and EMS controls electromotor to be in lasting oil-break shape State, until HCU judges that tentatively continuing oil-break demand is false, now EMS controls electromotor to exit lasting oil-break state, electromotor Recover fuel feeding or state of deactivating；If HCU is judged as NO, after pausing 1～5 second, whether to rejudge electromotor again Oil-break, if HCU is still judged as that otherwise EMS controls electromotor to deactivate state.
Described HCU is arranged in electromotor oil-break demand torque step according to present engine reality output torque, specifically sets The mode of putting is：
If i HCU judges that present engine reality output torque is more than or equal to C, electromotor oil-break demand torque is arranged For D, whether the electromotor reality output torque now of HCU judgement afterwards is less than or equal to E, if being judged as YES, electromotor oil-break Demand torque is set to 0, and otherwise electromotor oil-break demand torque is still set to D until electromotor reality output torque is less than or waits In E；Electromotor oil-break demand torque is set to D, it is to avoid vehicle is trembled Dynamic；
If ii HCU judges that present engine reality output torque is less than C and is more than E, electromotor oil-break demand torque sets It is set to 0, HCU judges electromotor reality output torque now afterwards, if electromotor reality output torque now is more than or waits In C, then mode i of pressing executes；If electromotor reality output torque now is less than or equal to E, by the execution of mode iii；If this When electromotor reality output torque be less than C and be more than E, then repeat by mode ii execute；Mode ii is in order to avoid electromotor Reality output torque fuctuation within a narrow range and bring the problem of electromotor oil-break demand torque saltus step repeatedly；
If iii HCU judges that present engine reality output torque is less than or equal to E, engine demand torque is set to 0；
Wherein, C is directly electromotor oil-break demand torque can be set to 0 and the electromotor reality output do not shaken of vehicle Torque upper limit value；E be can directly by electromotor oil-break demand torque be set to 0 and the electromotor reality output do not shaken of vehicle turn Square lower limit；D is so that electromotor reality output torque is gradually reduced to the electromotor oil-break demand torque transition value of E, and D is in 0～E Between value and do not contain boundary value.The numerical range of C, E repeatedly can be tried according to the electromotor of different model, different vehicles Test acquisition, and a suitable numerical value is determined according to specific vehicle jitter conditions, noise situation, D can be according to specific car Jitter conditions and electromotor reality output torque reduce rate requirement to select.Generally, described C 19～25Nm it Between value, D value between 3～6Nm, E value between 10～15Nm, such span makes vehicle resultant effect relatively Good.
Vehicle meet under hybrid power situation below any one, then described tentatively continue oil-break demand set up：
(1) output voltage of electrokinetic cell bag is more than when overcharging risk voltage；Overcharge risk voltage and refer to electricity in the short time There is the minimum current voltage value overcharging risk in pond, specifically can be set according to the capacity of battery and charge power, actually used When, typically corresponding voltage is charged to when 90%～95% as overcharging risk voltage using electrokinetic cell bag；
(2) state-of-charge of electrokinetic cell bag is when overcharging more than risk state-of-charge；Overcharge risk state-of-charge to refer to In short time, battery has the minimum current state-of-charge overcharging risk, specifically can be set according to the capacity of battery and charge power Fixed, when actually used, typically using electrokinetic cell bag state-of-charge for when 80%～90% as overcharging risk state-of-charge；
(3) output voltage of electrokinetic cell bag rated voltage to overcharge between risk voltage or electrokinetic cell bag charged State is less than when overcharging risk state-of-charge, need to meet following condition simultaneously：A () electromotor does not run at low ambient temperatures；(b) Electrokinetic cell bag does not have charge requirement；C () electromotor allows to stop；D () vehicle is in neutral or the gear that slows down that advances, or at vehicle Accelerate gear in advancing and vehicle is in lasting oil-break state in previous moment；E () speed is higher than setting value A, A is in 25～40km/h Between value；F () engine speed is higher than setting value B, B value between 650～1200rpm.
Described low temperature environment be ambient temperature below 0 DEG C or after vehicle launch electrokinetic cell bag temperature be in for a long time Less than 0 DEG C.
The fuel cut-off control strategy of described agreement is：If 1000 DEG C of catalyst temperature T ＞, oil-break forbidden by electromotor；If urging Change device temperature T≤1000 DEG C, then EMS passes through engine water temperature correction electromotor oil-break time delay, if now engine speed≤S, Then oil-break forbidden by electromotor；If engine speed ＞ S, EMS control electromotor execution oil-break instruction, wherein S allows disconnected for EMS The engine speed lower limit of oil.According to vehicle test data, general EMS allows the engine speed lower limit of oil-break high In minimum idling speed 400rpm, and actually used during, S value typically between 700～1000rpm.
The hybrid vehicle of the present invention continues fuel cut-off control method it is contemplated that the reality output torque of electromotor, that is, exist In band gear deceleration or neutral position sliding operating mode, in order to allow motor torque comparatively fast to decline, electromotor reality output torque is more than or waits When C, electromotor oil-break demand torque is set to transition value D；Electromotor reality output torque is less than or equal to during E will Electromotor oil-break demand torque is set to 0, it is to avoid tentatively continue oil-break demand set up when electromotor reality output torque larger and Cut-out fuel oil supply immediately brings the problem of vehicle shake；The inventive method also contemplates the rotating speed of impact oil-break effect, speed The state-of-charge SOC of the electrokinetic cell bag of factor and hybrid vehicle, the temperature of charge requirement, halt condition and running environment Degree etc. so that hybrid vehicle continue oil-break during, it is possible to decrease vehicle shake probability, improve driver comfort, with When also can improve the efficiency that driver reduces speed in loose accelerator pedal, it is possible to decrease motor is when the big torque of High speed load is braked The noise producing.
Specific embodiment
The invention will be further described with reference to embodiments, but the invention is not limited in the statement of embodiment.
Embodiment 1
A kind of hybrid vehicle continues fuel cut-off control method, and EMS will be actual to the oil-break collected information, present engine Output torque and engine water temperature are transferred to HCU, and HCU synthesis gear, vehicle driving patterns and speed judge tentatively to continue oil-break Whether demand is set up, if tentatively continue oil-break demand setting up, HCU arranges electromotor according to present engine reality output torque Oil-break demand torque simultaneously sends it to EMS execution, until when electromotor reality output torque is less than or equal to 10Nm, electromotor Oil-break demand torque is set to 0, and now, according to the fuel cut-off control policy control electromotor oil-break of agreement, HCU is anti-according to EMS for EMS Whether the information of feedback judge electromotor oil-break, if HCU is judged as YES, triggering HCU continues oil-break function and will persistently break Oil instruction is sent to EMS, and EMS controls electromotor to be in lasting oil-break state, until HCU judges that tentatively continuing oil-break demand does not become Vertical, now EMS controls electromotor to exit lasting oil-break state, and electromotor recovers fuel feeding or state of deactivating；If HCU judges It is no, then rejudges electromotor whether oil-break again after pausing 1～5 second, if HCU is still judged as that otherwise EMS controls starting Machine is deactivated state.
HCU arranges in electromotor oil-break demand torque step according to present engine reality output torque, concrete setting side Formula is：
If i HCU judges that present engine reality output torque is more than or equal to 19Nm, electromotor oil-break demand torque sets It is set to 5Nm, HCU judges whether electromotor reality output torque now is less than or equal to 10Nm afterwards, if being judged as YES, sends out Motivation oil-break demand torque is set to 0, and otherwise electromotor oil-break demand torque is still set to 5Nm until electromotor reality output turns Square is less than or equal to 10Nm；
If ii HCU judges that present engine reality output torque is less than 19Nm and is more than 10Nm, electromotor oil-break demand Torque is set to 0, and HCU judges electromotor reality output torque now afterwards, if electromotor reality output torque now is big In or be equal to 19Nm, then press mode i execute；If electromotor reality output torque now is less than or equal to 10Nm, by mode Iii executes；If electromotor reality output torque now is less than 19Nm and is more than 10Nm, repeat to execute by mode ii；
If iii HCU judges that present engine reality output torque is less than or equal to 10Nm, engine demand torque is arranged For 0.
Vehicle meet under hybrid power situation below any one, then tentatively continue oil-break demand set up：
(1) output voltage of electrokinetic cell bag is in more than 350V；
(2) state-of-charge of electrokinetic cell bag is more than 80%；
(3) voltage of electrokinetic cell bag between 288～350V or electrokinetic cell bag state-of-charge be less than 80% when, need Meet following condition simultaneously：A () electromotor does not run at low ambient temperatures, low temperature environment be ambient temperature below 0 DEG C or After vehicle launch, electrokinetic cell bag temperature is in less than 0 DEG C for a long time；B () electrokinetic cell bag does not have charge requirement；(c) electromotor Allow to stop；D () vehicle is in neutral or the gear that slows down that advances, or vehicle is in advance acceleration gear and vehicle is in previous moment Continue oil-break state；E () speed is higher than 25km/h；F () engine speed is higher than 1200rpm.
Agreement fuel cut-off control strategy be：If 1000 DEG C of catalyst temperature T ＞, oil-break forbidden by electromotor；If catalyst converter Temperature T≤1000 DEG C, then EMS pass through engine water temperature correction electromotor oil-break time delay, if now engine speed≤960rpm, Then oil-break forbidden by electromotor；If engine speed ＞ 960rpm, EMS control electromotor execution oil-break instruction.
Embodiment 2
A kind of hybrid vehicle continues fuel cut-off control method, the hybrid power in its concrete control method and embodiment 1 The lasting fuel cut-off control method of automobile is similar, and its difference is：C value is 25Nm, and E value is 13Nm, and D value is 4Nm, A value is 35km/h, and B value is 800rpm, and S value is 750rpm.

Claims (7)

1. a kind of hybrid vehicle continue fuel cut-off control method it is characterised in that：EMS is by the oil-break collected information, current Electromotor reality output torque and engine water temperature are transferred to HCU, and HCU synthesis gear, vehicle driving patterns and speed judge just Step continues whether oil-break demand is set up, if tentatively continue oil-break demand setting up, HCU is according to present engine reality output torque Setting electromotor oil-break demand torque simultaneously sends it to EMS execution, until electromotor reality output torque is less than or equal to E When, electromotor oil-break demand torque is set to 0, wherein E be can directly by electromotor oil-break demand torque be set to 0 and vehicle not Shake electromotor reality output lower torque value, now EMS according to agreement fuel cut-off control policy control electromotor oil-break, Whether HCU judges electromotor oil-break according to EMS feedack, if HCU is judged as YES, triggering HCU continues oil-break work( And the instruction of lasting oil-break can be sent to EMS, EMS controls electromotor to be in lasting oil-break state, until HCU judgement is tentatively lasting Oil-break demand is false, and now EMS controls electromotor to exit lasting oil-break state, and electromotor recovers fuel feeding or shape of deactivating State；If HCU is judged as NO, after pausing 1～5 second, rejudge electromotor whether oil-break again, if HCU is still judged as otherwise EMS controls electromotor to deactivate state.
2. hybrid vehicle as claimed in claim 1 continue fuel cut-off control method it is characterised in that：Described HCU according to work as In front engine reality output torque setting electromotor oil-break demand torque step, concrete set-up mode is：
If i HCU judges that present engine reality output torque is more than or equal to C, electromotor oil-break demand torque is set to D, HCU judges whether electromotor reality output torque now is less than or equal to E, if being judged as YES, electromotor oil-break demand afterwards Torque is set to 0, and otherwise electromotor oil-break demand torque is still set to D until electromotor reality output torque is less than or equal to E；
If ii HCU judges that present engine reality output torque is less than C and is more than E, electromotor oil-break demand torque is set to 0, the electromotor reality output torque now of HCU judgement afterwards, if electromotor reality output torque now is more than or equal to C, Mode i of then pressing executes；If electromotor reality output torque now is less than or equal to E, by the execution of mode iii；If now Electromotor reality output torque is less than C and is more than E, then repeat to execute by mode ii；
If iii HCU judges that present engine reality output torque is less than or equal to E, engine demand torque is set to 0；
Wherein, C is directly electromotor oil-break demand torque can be set to 0 and the electromotor reality output torque do not shaken of vehicle Higher limit；E is directly electromotor oil-break demand torque to be set under 0 and the electromotor reality output torque do not shaken of vehicle Limit value；D is so that electromotor reality output torque is gradually reduced to the electromotor oil-break demand torque transition value of E, and D is between 0～E Value and do not contain boundary value.
3. hybrid vehicle as claimed in claim 2 continue fuel cut-off control method it is characterised in that：Described C 19～ Value between 25Nm, D value between 3～6Nm, E value between 10～15Nm.
4. hybrid vehicle as claimed in claim 1 continue fuel cut-off control method it is characterised in that：Vehicle is in hybrid power Following any one is met, then the described oil-break demand that tentatively continues is set up under situation：
(1) output voltage of electrokinetic cell bag is more than when overcharging risk voltage；
(2) state-of-charge of electrokinetic cell bag is when overcharging more than risk state-of-charge；
(3) output voltage of electrokinetic cell bag rated voltage to overcharge between risk voltage or electrokinetic cell bag state-of-charge Less than when overcharging risk state-of-charge, following condition need to be met simultaneously：A () electromotor does not run at low ambient temperatures；(b) power Battery bag does not have charge requirement；C () electromotor allows to stop；Before d () vehicle is in neutral or the gear that slows down that advances, or vehicle is in Enter to accelerate gear and vehicle is in lasting oil-break state in previous moment；E () speed is higher than setting value A, A is between 25～40km/h Value；F () engine speed is higher than setting value B, B value between 650～1200rpm.
5. hybrid vehicle as claimed in claim 4 continue fuel cut-off control method it is characterised in that：Described low temperature environment is Ambient temperature below 0 DEG C or after vehicle launch electrokinetic cell bag temperature be in less than 0 DEG C for a long time.
6. described hybrid vehicle as arbitrary in Claims 1 to 5 continue fuel cut-off control method it is characterised in that：Described about Fixed fuel cut-off control strategy is：If 1000 DEG C of catalyst temperature T ＞, oil-break forbidden by electromotor；If catalyst temperature T≤1000 DEG C, then EMS passes through engine water temperature correction electromotor oil-break time delay, if now engine speed≤S, electromotor is forbidden breaking Oil；If engine speed ＞ S, EMS control electromotor execution oil-break instruction, wherein S allows the engine speed of oil-break for EMS Lower limit.
7. hybrid vehicle as claimed in claim 6 continue fuel cut-off control method it is characterised in that：Described S 700～ Value between 1000rpm.
CN201610964067.6A 2016-10-28 2016-10-28 Hybrid vehicle continues fuel cut-off control method Active CN106379312B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610964067.6A CN106379312B (en) 2016-10-28 2016-10-28 Hybrid vehicle continues fuel cut-off control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610964067.6A CN106379312B (en) 2016-10-28 2016-10-28 Hybrid vehicle continues fuel cut-off control method

Publications (2)

Publication Number Publication Date
CN106379312A true CN106379312A (en) 2017-02-08
CN106379312B CN106379312B (en) 2019-01-01

Family

ID=57956748

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610964067.6A Active CN106379312B (en) 2016-10-28 2016-10-28 Hybrid vehicle continues fuel cut-off control method

Country Status (1)

Country Link
CN (1) CN106379312B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107559094A (en) * 2017-08-25 2018-01-09 科力远混合动力技术有限公司 No-clutch hybrid electric vehicle engine shuts down vibration control method
CN110219739A (en) * 2018-03-02 2019-09-10 上海汽车集团股份有限公司 The control method and control device of a kind of vehicle, engine
CN111140386A (en) * 2020-04-07 2020-05-12 潍柴动力股份有限公司 Engine state control method and device
CN111594330A (en) * 2020-05-13 2020-08-28 上海元城汽车技术有限公司 Deceleration fuel cut-off control method, device and system, vehicle and storage medium
CN112824193A (en) * 2019-11-21 2021-05-21 广州汽车集团股份有限公司 Method and device for diagnosing and processing fuel exhaustion of hybrid electric vehicle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62210232A (en) * 1986-03-10 1987-09-16 Nissan Motor Co Ltd Fuel feed control device
JPS63248949A (en) * 1987-04-03 1988-10-17 Honda Motor Co Ltd Fuel supply control device for internal combustion engine
EP1036695A2 (en) * 1999-03-09 2000-09-20 Honda Giken Kogyo Kabushiki Kaisha Engine control system for hybrid vehicle
CN101910590A (en) * 2008-01-09 2010-12-08 丰田自动车株式会社 Apparatus to control the transition phase of a fuel cut off state of an internal combustion engine
DE102011010068A1 (en) * 2011-02-01 2012-08-02 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Method for controlling combustion engine of motor car during coasting of combustion engine, involves selecting deceleration fuel cut off rotation speed to terminate thrust shutdown of engine based on currently expected dragging torque
CN102658817A (en) * 2012-05-07 2012-09-12 奇瑞汽车股份有限公司 Control method for realizing purely-electric function of hybrid vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62210232A (en) * 1986-03-10 1987-09-16 Nissan Motor Co Ltd Fuel feed control device
JPS63248949A (en) * 1987-04-03 1988-10-17 Honda Motor Co Ltd Fuel supply control device for internal combustion engine
EP1036695A2 (en) * 1999-03-09 2000-09-20 Honda Giken Kogyo Kabushiki Kaisha Engine control system for hybrid vehicle
CN101910590A (en) * 2008-01-09 2010-12-08 丰田自动车株式会社 Apparatus to control the transition phase of a fuel cut off state of an internal combustion engine
DE102011010068A1 (en) * 2011-02-01 2012-08-02 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Method for controlling combustion engine of motor car during coasting of combustion engine, involves selecting deceleration fuel cut off rotation speed to terminate thrust shutdown of engine based on currently expected dragging torque
CN102658817A (en) * 2012-05-07 2012-09-12 奇瑞汽车股份有限公司 Control method for realizing purely-electric function of hybrid vehicle

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107559094A (en) * 2017-08-25 2018-01-09 科力远混合动力技术有限公司 No-clutch hybrid electric vehicle engine shuts down vibration control method
CN107559094B (en) * 2017-08-25 2019-10-01 科力远混合动力技术有限公司 No-clutch hybrid electric vehicle engine shuts down vibration control method
CN110219739A (en) * 2018-03-02 2019-09-10 上海汽车集团股份有限公司 The control method and control device of a kind of vehicle, engine
CN112824193A (en) * 2019-11-21 2021-05-21 广州汽车集团股份有限公司 Method and device for diagnosing and processing fuel exhaustion of hybrid electric vehicle
CN111140386A (en) * 2020-04-07 2020-05-12 潍柴动力股份有限公司 Engine state control method and device
CN111140386B (en) * 2020-04-07 2020-08-21 潍柴动力股份有限公司 Engine state control method and device
CN111594330A (en) * 2020-05-13 2020-08-28 上海元城汽车技术有限公司 Deceleration fuel cut-off control method, device and system, vehicle and storage medium

Also Published As

Publication number Publication date
CN106379312B (en) 2019-01-01

Similar Documents

Publication Publication Date Title
CN106379312A (en) Continuous fuel cut-off control method for hybrid electric vehicle
CN101959731B (en) Control apparatus and method for controlling a hybrid vehicle
CN108544937B (en) Automobile storage battery charging and discharging management method and system
CN104816638B (en) Vehicle
CN102658817B (en) Control method for realizing purely-electric function of hybrid vehicle
CN104943678B (en) Vehicle console device
CN104411555B (en) Control device for hybrid vehicle
CN105313885B (en) Vehicle console device
CN109532814A (en) The control device of vehicle
CN104973044B (en) Controller of vehicle
CN108068795A (en) Regenerative torque limitation control
US7615950B2 (en) Control device for hybrid electric vehicle
JP5338390B2 (en) Electric vehicle motor control device
CN104590248B (en) A kind of control method based on connection in series-parallel hybrid power system
US11260845B2 (en) Vehicle control system and method
CN103079926A (en) Regenerative control device, hybrid vehicle, regenerative control method, and program
CN103946092B (en) The control device of motor vehicle driven by mixed power
CN101259845A (en) Mixed power motor torsional moment smoothness processing controlling system
CN107650665A (en) Power transmission
CN101402360A (en) Power generation control method for motor of hybrid power automobile
CN103171557A (en) Hybrid automobile engine auxiliary braking access control method
CN107804320A (en) Automatic cruising control method for hybrid electric vehicle
CN102514570A (en) Series-parallel combined hybrid electric vehicle, method for controlling starting and stopping of engine of series-parallel combined hybrid electric vehicle and system
CN104627001B (en) A kind of Brake energy recovery adjustment control method
CN104249733A (en) Automobile energy recovery control method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20220823

Address after: No.16 Gongxin Avenue, industrial park, Yifeng County, Yichun City, Jiangxi Province

Patentee after: Jiangxi Dingsheng New Material Technology Co.,Ltd.

Address before: 528000 601-604 room, block A, 1 floor, 131 Ji Hua Xi Road, Chancheng District, Foshan, Guangdong.

Patentee before: CORUN HYBRID POWER TECHNOLOGY Co.,Ltd.

TR01 Transfer of patent right