CN107472251A - A kind of four-wheel driving electric vehicle slides control method and system - Google Patents
A kind of four-wheel driving electric vehicle slides control method and system Download PDFInfo
- Publication number
- CN107472251A CN107472251A CN201710672559.2A CN201710672559A CN107472251A CN 107472251 A CN107472251 A CN 107472251A CN 201710672559 A CN201710672559 A CN 201710672559A CN 107472251 A CN107472251 A CN 107472251A
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- Prior art keywords
- hub clutch
- signal
- wheel
- driver element
- wheel hub
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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
- 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, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18072—Coasting
-
- 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
- B60W10/08—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
Abstract
The invention discloses a kind of four-wheel driving electric vehicle to slide control method and system, methods described refer to confirm electric automobile be in can feedback electric energy sliding state, entire car controller controls the folding of hub clutch and its working condition of corresponding driver element according to brake pedal output signal and car speed；Entire car controller controls driver element driving vehicle to travel and carries out energy feedback according to user's Driving control signal；The system includes entire car controller, hub clutch, driver element and signal gathering unit；The instruction that the entire car controller is sent according to signal gathering unit controls hub clutch and driver element, whether the hub clutch control wheel engages with driver element power transmission shaft, and the driver element instructs according to entire car controller drives power transmission shaft to be rotated；In the case of drive propulsion abundance, the useless energy for rotating consumption is reduced, and then improve electric automobile energy effective rate of utilization.
Description
Technical field
The present invention relates to electric vehicle engineering field, and control is slided more particularly, to a kind of four-wheel driving electric vehicle
Method and system.
Background technology
With the increasingly prosperity of Modern Traffic, automobile has become the important selection of people's trip, and because of the tail gas of automobile
Discharge and influence the problem of air and living environment are into another urgent need to resolve；In response to the call of energy-saving and emission-reduction, in recent years
The electrokinetic cell of repeatable charging is used to replace electric automobile of the fuel oil as energy source of car to have risen；The appearance of electric automobile
A method for solving motor vehicle exhaust emission and direction, but existing electric automobile are largely provided, is continued to use substantially
The power drive system of conventional vehicle, i.e., no matter vehicle is in which kind of transport condition, each drivetrain components (such as semiaxis, differential
Device, main reducing gear, axle and gear and rotor) all rotating, converted electrical energy into electric automobile for vehicle wheel rotation
Mechanical energy when, the rotation of some parts of the power drive system consumes part energy, and these energy are not final
Be converted to the mechanical energy for vehicle wheel rotation, in order to improve the effective rate of utilization of energy, need to traditional power drive system with
And corresponding drive control method is improved.
The content of the invention
In order to solve the problems, such as that existing electric automobile energy effective rate of utilization is low existing for background technology, the invention provides
A kind of four-wheel driving electric vehicle slides control method and system, described method and system based on the control to hub clutch,
Propose and can controlled according to brake pedal control signal and vehicle feedback signal forward and backward under the sliding state of feedback electric energy
The method that wheel drive unit participates in work, in the case of power abundance, is worked using single-drive system, idle drive system
Also consumed energy will not be rotated, to reach the purpose for reducing energy consumption；
A kind of four-wheel driving electric vehicle, which slides control method, to be included：
Step 1, confirm electric automobile be in can feedback electric energy sliding state, it is described can the sliding state of feedback electric energy refer to
Accelerator pedal output signal is 0V, and electrokinetic cell SOC value is between SOC lowest thresholds and SOC highest threshold values；
Step 2, entire car controller according to brake pedal output signal and car speed control hub clutch disengagement or
Engagement and its working condition of corresponding driver element；The hub clutch includes front-wheel hub clutch and rear wheel rotation side
Clutch；The driver element includes front wheel drive unit and rear wheel drive device；
Step 3, entire car controller controls driver element driving vehicle to travel and carries out energy according to user's Driving control signal
Measure feedback；User's Driving control signal includes accelerator pedal signal, brake pedal signal and device output signal of putting into gear.
Further, the brake pedal output signal has small arrive according to output signal strength size in its range of signal
0V, light brake signal, moderate brake signal, severe brake signal are divided into greatly, wherein, slight, moderate, the severe system
The width of dynamic range of signal is equal or unequal；
Further, speed first threshold is set, when car speed is less than speed first threshold and brake pedal output letter
When number being 0V, vehicle control unit controls front and rear wheel hub clutch disengages；Driver element does not work；
Further, speed first threshold is set, when car speed is more than speed first threshold and brake pedal output letter
When number being light brake signal, the engagement of vehicle control unit controls front-wheel hub clutch, rear wheel rotation side throw-out-of clutch；Vehicle control
Front wheel drive unit works and carries out energy feedback, rear wheel drive device does not work for device control processed；
Further, speed first threshold is set, when car speed is more than speed first threshold and brake pedal output letter
When number being moderate brake signal, entire car controller front-wheel hub clutch disengages, the engagement of front-wheel hub clutch；Entire car controller
Control rear wheel drive device works and carries out energy feedback, and front wheel drive unit does not work；Trailing wheel mechanical brake carries out machinery
Braking；
Further, speed first threshold is set, when car speed is more than speed first threshold and brake pedal output letter
When number being severe brake signal, the engagement of entire car controller front and rear wheel hub clutch；Vehicle control unit controls front and rear wheel drives
Cell operation simultaneously carries out energy feedback；Front and rear wheel mechanical brake carries out mechanical braking；
Further, the engagement of the hub clutch refers to that hub clutch connects wheel and driver element power transmission shaft
Close, wheel is rotated coaxially with driver element；The disengagement of the hub clutch refers to that hub clutch is single with driving by wheel
First power transmission shaft separates, and wheel is rotated alone；
Further, the front-wheel hub clutch includes the near front wheel hub clutch and off-front wheel hub clutch, whole
The control instruction that vehicle controller is sent to the near front wheel hub clutch and off-front wheel hub clutch is identical；The rear wheel rotation
Side clutch includes left rear wheel hub clutch and off hind wheel hub clutch, entire car controller to left rear wheel hub clutch and
The control instruction that off hind wheel hub clutch is sent is identical；
A kind of system that control is slided for four-wheel driving electric vehicle includes：
Entire car controller, the entire car controller receives the instruction of user's Driving control, electrokinetic cell SOC value signals, to each
Instruction is judged, control instruction is sent to hub clutch, driver element and mechanical brake；
Hub clutch, the hub clutch includes front-wheel hub clutch and trailing wheel hub clutch, for controlling
Whether wheel processed engages with driver element power transmission shaft, and when the hub clutch engages, wheel and driver element power transmission shaft are coaxial
Rotate；
Driver element, the driver element includes front wheel drive unit and rear wheel drive device, for according to vehicle control
Device order-driven motor driven power transmission shaft processed is rotated；For producing feedback energy in braking；
Signal gathering unit, the signal gathering unit collection electrokinetic cell SOC value and user's Driving control signal, and
The signal of collection is sent to entire car controller；User's Driving control signal includes accelerator pedal signal, brake pedal is believed
Number and device output signal of putting into gear；
Further, the driver element includes electric machine controller, motor, automatic transmission and power transmission shaft；Institute
The control signal that electric machine controller receives complete machine controller is stated, controls motor and automatic transmission to drive drive axis；
When hub clutch engages, power transmission shaft drives vehicle wheel rotation；
Further, the front-wheel hub clutch includes the near front wheel hub clutch and off-front wheel hub clutch, whole
The control instruction that vehicle controller is sent to the near front wheel hub clutch and off-front wheel hub clutch is identical；The rear wheel rotation
Side clutch includes left rear wheel hub clutch and off hind wheel hub clutch, entire car controller to left rear wheel hub clutch and
The control instruction that off hind wheel hub clutch is sent is identical；
Further, when the engagement of vehicle control unit controls trailing wheel hub clutch, front-wheel hub clutch separate, vehicle
Controller instructs to rear wheel drive device according to user's Driving control and sends control instruction, front wheel drive unit in addition to wheel other
Part does not rotate；When vehicle control unit controls front and back wheel hub clutch engages, entire car controller is according to user
Driving control instructs to front wheel drive unit and rear wheel drive device and sends identical control instruction.
Beneficial effects of the present invention are：Technical scheme, give a kind of four-wheel driving electric vehicle and slide control
The method and system of system, described method and system is based on the control to hub clutch, it is proposed that can feedback electric energy slide
Under state, the method that front and rear wheel driver element participates in work is controlled according to brake pedal control signal and vehicle feedback signal,
In the case of power abundance, worked using single-drive system, idle drive system will not also rotate consumed energy, to reach
Reduce the purpose of energy consumption.
Brief description of the drawings
By reference to the following drawings, the illustrative embodiments of the present invention can be more fully understood by：
Fig. 1 is that a kind of four-wheel driving electric vehicle of the specific embodiment of the invention slides the flow chart of control method；
Fig. 2 is a kind of structure chart of four-wheel driving electric vehicle coasting control systems of the specific embodiment of the invention；
Fig. 3 is a kind of vehicle electric system structure chart with coasting control systems of the specific embodiment of the invention.
Embodiment
The illustrative embodiments of the present invention are introduced with reference now to accompanying drawing, however, the present invention can use many different shapes
Formula is implemented, and is not limited to embodiment described herein, there is provided these embodiments are to disclose at large and fully
The present invention, and fully pass on the scope of the present invention to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements are attached using identical
Icon is remembered.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has to person of ordinary skill in the field
It is common to understand implication.Further it will be understood that the term limited with usually used dictionary, be appreciated that and its
The linguistic context of association area has consistent implication, and is not construed as Utopian or overly formal meaning.
Fig. 1 is that a kind of four-wheel driving electric vehicle of the specific embodiment of the invention slides the flow chart of control method；Root
According to the method and step shown in the flow chart, according to brake pedal output signal and vehicle instantaneous velocity to electricity under sliding state
The driver element of electrical automobile is controlled, and the service condition of driver element is changed in the case of power abundance, reduces energy damage
Consumption, methods described include：
Step 101, confirm electric automobile be in can feedback electric energy sliding state, it is described can feedback electric energy sliding state
It is 0V to refer to accelerator pedal output signal, and electrokinetic cell SOC value is between SOC lowest thresholds and SOC highest threshold values；In this state
Under, vehicle is in non-resistance sliding state or braking sliding state according to brake pedal output signal；When electrokinetic cell SOC value is small
Low energy state, limitation electrical source of power output are in when SOC lowest thresholds, vehicle enters low speed battery saving mode；Work as power electric
When pond SOC value is more than SOC highest threshold values, it is not necessary to carry out electric energy feedback；In the present embodiment, SOC lowest thresholds are 10%,
SOC highests threshold value is 96%；The electrokinetic cell SOC value is gathered by electrokinetic cell, is sent to entire car controller；
Step 102, entire car controller controls the disengagement of hub clutch according to brake pedal output signal and car speed
Or the working condition of engagement and its corresponding driver element；
The hub clutch includes front-wheel hub clutch and trailing wheel hub clutch；Before the driver element includes
Wheel drive unit and rear wheel drive device；The brake pedal output signal is according to output signal strength size in its signal model
Have in enclosing it is small to being divided into 0V, light brake signal, moderate brake signal, severe brake signal greatly, wherein, it is described slightly,
Moderate, the width of severe brake signal scope are equal or unequal；In the present embodiment, light brake range of signal is
0.5~2V, moderate brake signal scope are 2~3V, and severe brake signal scope is 3~5V；
Speed first threshold is set, and speed first threshold described in the present embodiment takes 30km/h；
When car speed is less than speed first threshold and brake pedal output signal is 0V, before vehicle control unit controls,
Rear wheel rotation side throw-out-of clutch；Driver element does not work；Vehicle is in lower resistance sliding state；
When car speed is more than speed first threshold and brake pedal output signal is light brake signal, full-vehicle control
The engagement of device control front-wheel hub clutch, rear wheel rotation side throw-out-of clutch；Vehicle control unit controls front wheel drive unit works simultaneously
Carry out energy feedback, rear wheel drive device does not work；
When car speed is more than speed first threshold and brake pedal output signal is moderate brake signal, full-vehicle control
Device front-wheel hub clutch disengages, the engagement of front-wheel hub clutch；Vehicle control unit controls rear wheel drive device works and carried out
Energy feedback, front wheel drive unit do not work；Trailing wheel mechanical brake carries out mechanical braking；
When car speed is more than speed first threshold and brake pedal output signal is severe brake signal, full-vehicle control
Device front and rear wheel hub clutch engages；Vehicle control unit controls front and rear wheel driver element works and carries out energy feedback；It is forward and backward
Wheel mechanical brake carries out mechanical braking；
Step 103, entire car controller controls driver element driving vehicle to travel and carried out according to user's Driving control signal
Energy feedback；User's Driving control signal includes accelerator pedal signal, brake pedal signal and device output signal of putting into gear；
Further, the engagement of the hub clutch refers to that hub clutch connects wheel and driver element power transmission shaft
Close, wheel is rotated coaxially with driver element；The disengagement of the hub clutch refers to that hub clutch is single with driving by wheel
First power transmission shaft separates, and wheel is rotated alone；
Further, the braking energy feedback refers to that motor is by power transmission shaft to it when vehicle is under on-position
The mechanical energy of effect is partially converted into electric energy, and electric energy is passed back in electrokinetic cell；
Further, the front-wheel hub clutch includes the near front wheel hub clutch and off-front wheel hub clutch, whole
The control instruction that vehicle controller is sent to the near front wheel hub clutch and off-front wheel hub clutch is identical；The rear wheel rotation
Side clutch includes left rear wheel hub clutch and off hind wheel hub clutch, entire car controller to left rear wheel hub clutch and
The control instruction that off hind wheel hub clutch is sent is identical；
Fig. 2 is that a kind of four-wheel driving electric vehicle of the specific embodiment of the invention slides the system construction drawing of control；Fig. 3
For vehicle electric system structure chart, the electric automobile shown in described Fig. 3 is the system for carrying out sliding control described in Fig. 2
The electric automobile implemented；
A kind of system that control is slided for four-wheel driving electric vehicle includes：
Entire car controller 201, the entire car controller 201 receive the instruction of user's Driving control, electrokinetic cell SOC value letter
Number, each instruction is judged, control instruction is sent to hub clutch, driver element and mechanical brake；
Hub clutch 202, the hub clutch 202 include front-wheel hub clutch and trailing wheel hub clutch,
For controlling whether wheel engages with driver element power transmission shaft, when the hub clutch engages, wheel is driven with driver element
Axle rotates coaxially；
Driver element 203, the driver element 203 includes front wheel drive unit and rear wheel drive device, for basis
The order-driven motor driven power transmission shaft of entire car controller 201 is rotated；For producing feedback energy in braking；
Signal gathering unit 204, the signal gathering unit 204 gather electrokinetic cell SOC value and user's Driving control
Signal, and the signal of collection is sent to entire car controller 201；User's Driving control signal include accelerator pedal signal,
Brake pedal signal and device output signal of putting into gear；
Further, the driver element 203 includes electric machine controller, motor, automatic transmission and power transmission shaft；
The electric machine controller receives the control signal of complete machine controller, controls motor and automatic transmission to drive power transmission shaft to turn
It is dynamic；When hub clutch engages, power transmission shaft drives vehicle wheel rotation；
Further, the front-wheel hub clutch includes the near front wheel hub clutch and off-front wheel hub clutch, whole
The control instruction that vehicle controller is sent to the near front wheel hub clutch and off-front wheel hub clutch is identical；The rear wheel rotation
Side clutch includes left rear wheel hub clutch and off hind wheel hub clutch, entire car controller to left rear wheel hub clutch and
The control instruction that off hind wheel hub clutch is sent is identical；
Further, when entire car controller 201 controls the engagement of trailing wheel hub clutch, front-wheel hub clutch to separate,
Entire car controller 201 instructs to rear wheel drive device according to user's Driving control and sends control instruction, and front wheel drive unit removes car
The outer other parts of wheel do not rotate；When entire car controller 201 controls front and back wheel hub clutch to engage, vehicle control
Device 201 processed is instructed to front wheel drive unit and rear wheel drive device according to user's Driving control sends identical control instruction.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (12)
1. a kind of four-wheel driving electric vehicle slides control method, methods described includes：
Step 1, confirm electric automobile be in can feedback electric energy sliding state, it is described can the sliding state of feedback electric energy refer to acceleration
Pedal output signal is 0V, and electrokinetic cell SOC value is between SOC lowest thresholds and SOC highest threshold values；
Step 2, entire car controller controls the disengagement or engagement of hub clutch according to brake pedal output signal and car speed
And its working condition of corresponding driver element；The hub clutch includes front-wheel hub clutch and the clutch of rear wheel rotation side
Device；The driver element includes front wheel drive unit and rear wheel drive device；Step 3, entire car controller drives according to user
Control signal control driver element driving vehicle travels and carries out energy feedback；User's Driving control signal is stepped on including acceleration
Partitioned signal, brake pedal signal and device output signal of putting into gear.
2. according to the method for claim 1, it is characterised in that：The brake pedal output signal is according to output signal strength
Size have in its range of signal it is small to being divided into 0V, light brake signal, moderate brake signal, severe brake signal greatly,
Wherein, slight, moderate, the width of severe brake signal scope are equal or unequal.
3. according to the method for claim 1, it is characterised in that：When car speed is less than speed first threshold and brake pedal
When output signal is 0V, vehicle control unit controls front and rear wheel hub clutch disengages；Driver element does not work.
4. according to the method for claim 2, it is characterised in that：Speed first threshold is set, when car speed is more than speed
First threshold and when brake pedal output signal is light brake signal, the engagement of vehicle control unit controls front-wheel hub clutch,
Rear wheel rotation side throw-out-of clutch；Vehicle control unit controls front wheel drive unit works and carries out energy feedback, rear wheel drive device
Do not work.
5. according to the method for claim 2, it is characterised in that：Speed first threshold is set, when car speed is more than speed
First threshold and when brake pedal output signal is moderate brake signal, entire car controller front-wheel hub clutch disengages, front-wheel
Hub clutch engages；Vehicle control unit controls rear wheel drive device works and carries out energy feedback, front wheel drive unit not work
Make；Trailing wheel mechanical brake carries out mechanical braking.
6. according to the method for claim 2, it is characterised in that：Speed first threshold is set, when car speed is more than speed
First threshold and when brake pedal output signal is severe brake signal, the engagement of entire car controller front and rear wheel hub clutch；It is whole
Vehicle controller controls front and rear wheel driver element to work and carries out energy feedback；Front and rear wheel mechanical brake carries out mechanical braking.
7. according to the method for claim 1, it is characterised in that：The engagement of the hub clutch refers to that hub clutch will
Wheel engages with driver element power transmission shaft, wheel is rotated coaxially with driver element；The disengagement of the hub clutch is finger wheel
Side clutch separates wheel and driver element power transmission shaft, wheel is rotated alone.
8. according to the method for claim 1, it is characterised in that：The front-wheel hub clutch includes the side clutch of the near front wheel wheel
Device and off-front wheel hub clutch, the control that entire car controller is sent to the near front wheel hub clutch and off-front wheel hub clutch
Instruction is identical；Rear wheel rotation side clutch includes left rear wheel hub clutch and off hind wheel hub clutch, vehicle control
The control instruction that device processed is sent to left rear wheel hub clutch and off hind wheel hub clutch is identical.
9. a kind of system for realizing claim 1 methods described, the system include：
Entire car controller, the entire car controller receives the instruction of user's Driving control, electrokinetic cell SOC value signal, to each instruction
Judged, control instruction is sent to hub clutch, driver element and mechanical brake；
Hub clutch, the hub clutch includes front-wheel hub clutch and trailing wheel hub clutch, for controlling car
Whether wheel engages with driver element power transmission shaft, and when the hub clutch engages, wheel rotates coaxially with driver element power transmission shaft；
Driver element, the driver element includes front wheel drive unit and rear wheel drive device, for according to entire car controller
Order-driven motor driven power transmission shaft is rotated；For producing feedback energy in braking；
Signal gathering unit, the signal gathering unit collection electrokinetic cell SOC value and user's Driving control signal, and will adopt
The signal of collection is sent to entire car controller；User's Driving control signal include accelerator pedal signal, brake pedal signal and
Put into gear device output signal.
10. system according to claim 9, it is characterised in that：The driver element includes electric machine controller, driving electricity
Machine, automatic transmission and power transmission shaft；The electric machine controller receives the control signal of complete machine controller, control motor and
Automatic transmission drives drive axis；When hub clutch engages, power transmission shaft drives vehicle wheel rotation.
11. system according to claim 9, it is characterised in that：The front-wheel hub clutch include the near front wheel wheel side from
Clutch and off-front wheel hub clutch, the control that entire car controller is sent to the near front wheel hub clutch and off-front wheel hub clutch
Instruction processed is identical；Rear wheel rotation side clutch includes left rear wheel hub clutch and off hind wheel hub clutch, vehicle
The control instruction that controller is sent to left rear wheel hub clutch and off hind wheel hub clutch is identical.
12. system according to claim 9, it is characterised in that：When vehicle control unit controls trailing wheel hub clutch engage,
When front-wheel hub clutch separates, entire car controller instructs according to user's Driving control to be sent control to rear wheel drive device and refers to
Order, front wheel drive unit other parts in addition to wheel do not rotate；When vehicle control unit controls front and back wheel hub clutch
When engaging, entire car controller instructed according to user's Driving control sent to front wheel drive unit and rear wheel drive device it is identical
Control instruction.
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| CN201710672559.2A CN107472251B (en) | 2017-08-08 | 2017-08-08 | Four-wheel drive electric automobile sliding control method and system |
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| CN201710672559.2A CN107472251B (en) | 2017-08-08 | 2017-08-08 | Four-wheel drive electric automobile sliding control method and system |
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| CN111823857A (en) * | 2020-05-29 | 2020-10-27 | 西安法士特汽车传动有限公司 | Tractor timely four-wheel drive system control method based on mechanical hydraulic stepless gearbox |
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| CN108757917A (en) * | 2018-08-01 | 2018-11-06 | 北京长城华冠汽车科技股份有限公司 | The coasting control systems and method of electric vehicle |
| CN111823857A (en) * | 2020-05-29 | 2020-10-27 | 西安法士特汽车传动有限公司 | Tractor timely four-wheel drive system control method based on mechanical hydraulic stepless gearbox |
| CN111823857B (en) * | 2020-05-29 | 2021-05-18 | 西安法士特汽车传动有限公司 | Tractor timely four-wheel drive system control method based on mechanical hydraulic stepless gearbox |
| CN111645536A (en) * | 2020-06-05 | 2020-09-11 | 中国第一汽车股份有限公司 | Method for controlling driving torque of electric four-wheel drive automobile |
| CN111645536B (en) * | 2020-06-05 | 2021-10-01 | 中国第一汽车股份有限公司 | Method for controlling driving torque of electric four-wheel drive automobile |
| CN112092612A (en) * | 2020-09-18 | 2020-12-18 | 中国第一汽车股份有限公司 | Four-wheel drive pure electric vehicle power system |
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