CN109080623A - The snowfield drive-control system of hybrid vehicle - Google Patents
The snowfield drive-control system of hybrid vehicle Download PDFInfo
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- CN109080623A CN109080623A CN201710442311.7A CN201710442311A CN109080623A CN 109080623 A CN109080623 A CN 109080623A CN 201710442311 A CN201710442311 A CN 201710442311A CN 109080623 A CN109080623 A CN 109080623A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000001960 triggered effect Effects 0.000 claims abstract description 5
- 238000005183 dynamical system Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims 1
- 238000004904 shortening Methods 0.000 claims 1
- 238000011217 control strategy Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
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- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
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- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- 230000006641 stabilisation Effects 0.000 description 1
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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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
-
- 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
- B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
-
- 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
- B60W10/22—Conjoint control of vehicle sub-units of different type or different function including control of suspension systems
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention relates to technical field of vehicle, provide a kind of snowfield drive-control system of hybrid vehicle.Snowfield drive-control system of the present invention includes that snow field mode switch, main control unit and sub-control unit, sub-control unit include transmission control unit TCU, electronic stability control unit ESP and electronic air suspension control unit EAS again；Main control unit receives the snow field mode enabling signal that snow field mode switch is triggered and generates, and controls automobile and enter snow field mode, and sends snow field mode request signal to sub-control unit under snow field mode；TCU matches in response to the shift opportunity of snow field mode request signal control automobile with power system operation state；ESP shortens vehicle braking distance and initiate drop in response to snow field mode request signal control automobile turns round request；And EAS reduces suspension height in response to snow field mode request signal.Snowfield traveling control system of the invention enhances vehicle to the adaptability for driving road conditions.
Description
Technical field
The present invention relates to technical field of vehicle, in particular to the snowfield drive-control system of a kind of hybrid vehicle.
Background technique
Current new-energy automobile (also referred to as hybrid vehicle or new energy SUV (Sport Utility Vehicle,
Sport utility vehicle)) power that usually while comprising engine, motor and battery provides of the hybrid power that has.One
As, according to position of the motor in transmission system, new-energy automobile can be divided into P0, P1, P2, P3, P4 totally five kinds of frameworks.
Wherein, P4 framework is that motor is arranged at the rear axle of transmission system, as independent power output source to drive vehicle driving.
Since new energy battery is divided into high voltage power supply and low-tension supply, therefore P4 framework vehicle is divided into high pressure and low pressure again.City at present
New energy SUV vehicle on face is the high-tension battery vehicle under P4 framework, since high-tension battery vehicle electric energy is sufficient, output
Power is approximate even to surmount common traditional power engine, so can adapt to various severe road conditions, such as snowfield, sand ground.But
The SUV complete vehicle weight for configuring high-tension battery has but been more than the SUV for being equipped with traditional power engine, the electric energy and fuel consumption of generation
It is still higher, therefore the A-battery dynamical system developed under P4 framework has become the main research project of each motor corporation.
P4 low pressure framework can provide a part of electric energy for rear driving axle, ensure that one while guaranteeing emission request
Fixed dynamic property, but the power that this system provides, can satisfy a degree of acceleration and hill climbing demands on good road,
But seem unable to do what one wishes for the requirement of getting rid of poverty under severe road conditions.This is because using A-battery as the vehicle of new energy power
On, since power output itself is limited, and the control loop without coping with certain special road conditions (such as ice and snow road) is assisted,
Therefore make the vehicle of A-battery dynamical system framework can not the smooth-ride on ice and snow road.
Summary of the invention
In view of this, the present invention is directed to propose a kind of snowfield drive-control system of hybrid vehicle, to ensure low pressure
Cell power systems framework can the smooth-ride on ice and snow road.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of snowfield drive-control system of hybrid vehicle, the dynamical system of the hybrid vehicle include starting
Mechanical, electrical machine and A-battery, and the snowfield drive-control system of the hybrid vehicle includes snow field mode switch, main control
Unit and sub-control unit, the sub-control unit include transmission control unit (Transmission Control again
Unit, TCU), electronic stability control unit (Electronic Stability Program, ESP) and electronic air suspension control
Unit (Electronically Air Suspension, EAS) processed；Wherein: the main control unit, for receiving the snow
Ground mode switchs the snow field mode enabling signal for being triggered and generating, and described mixed according to snow field mode enabling signal control
It closes power vehicle and enters snow field mode, and send snow field mode request letter to the sub-control unit under the snow field mode
Number；The TCU, for moving the shift opportunity of the hybrid vehicle with described
Force system operating status matches；The ESP, for controlling the hybrid power vapour in response to the snow field mode request signal
The anti-lock braking system (AntilockBraking System, ABS) of vehicle shortens vehicle braking distance and controls the hybrid power
The torque control system (Torque Control System, TCS) of automobile initiates drop to the main control unit and turns round request；With
And the EAS, for reducing suspension height in response to the snow field mode request signal.
Further, the main control unit is also used to control the engine and the motor under the snow field mode
The output torque under preset snow field mode gas pedal MAP chart, wherein the snow field mode gas pedal MAP chart compares standard oil
Door pedal MAP chart is gentle.
Further, main control unit is also used to detect the electricity and/or the hybrid vehicle of the A-battery
Failure, and it is dynamic there are the mixing when failure, is controlled in the A-battery not enough power supply and/or the hybrid vehicle
Power automobile exits snow field mode.
Further, the main control unit be also used to remember the hybrid vehicle it is electric under the snow field mode when
Information, and control when the hybrid vehicle powers on again the hybrid vehicle and entered according to the information remembered
The snow field mode.
Further, the meter communication of the main control unit and the hybrid vehicle, for being sent out to the instrument
The prompting message for sending the hybrid vehicle to be in snow field mode, and control the instrument and show the prompting letter to driver
Breath.
Further, the TCU makes the shift opportunity of the hybrid vehicle and the power system operation state phase
Matching includes: that the control hybrid vehicle is shifted gears in the case where preset snow field mode shifts gears curve, wherein the snowfield
Mode shift curve is configured as that the hybrid vehicle is made to be delayed to second gear starting, and upshift and delay downshift in advance.
Further, the ABS shortens vehicle braking distance and the TCS by changing slip-based controller thresholding
Change drop and turn round request trigger threshold, and request trigger threshold is turned round based on the drop after change and is turned round to initiate drop to the main control unit
Request.
Further, the sub-control unit be also used to feed back to the main control unit TCU, the ESP and/or
The status signal of the EAS.
Further, the main control unit is the mixed dynamic control unit (Hybrid of the hybrid vehicle
Control Unit, HCU).
Further, the snow field mode switch transmits the snow field mode enabling signal to hybrid power by LIN line
The car body control module (Body Control Module, BCM) of automobile, then CAN network is forwarded to by the BCM, then through gateway
PT-CAN bus is sent to be received by the HCU.
Compared with the existing technology, the snowfield drive-control system of hybrid vehicle of the present invention is low-voltage-powered new
Energy vehicle is configured with dedicated snow field mode, and vehicle is made still to be able to maintain good stability and accelerating ability in ice and snow road, increases
Strong vehicle improves intact stability to the adaptability for driving road conditions.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies mode and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the snowfield drive-control system of hybrid vehicle described in embodiment of the present invention；
Fig. 2 is the schematic diagram of a preferred control framework of snowfield drive-control system described in embodiment of the present invention；
Fig. 3 is the relational graph in embodiment of the present invention between gas pedal aperture and output torque；
Fig. 4 is shift curve of the TCU under snow field mode in embodiment of the present invention；And
Fig. 5 is the slip-based controller curve in embodiment of the present invention.
Description of symbols:
10, snowfield drive-control system 11, snow field mode switch
12, main control unit 13, sub-control unit
131, transmission control unit 132, electronic stability control unit
133, electronic air suspension control unit
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can
To be combined with each other.
In addition, the snowfield being previously mentioned in embodiments of the present invention, contains the low attachment coefficient road surface such as ice and snow road.
The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiment.
The snowfield drive-control system of a kind of hybrid vehicle of embodiment of the present invention, wherein the hybrid vehicle
Dynamical system include engine, motor and A-battery.In this example, engine is placed in the predecessor portions of vehicle to forerunner
Moving axis output power, motor are placed in the rear-guard part of vehicle to rear drive shaft output power.
Fig. 1 shows the structure of the snowfield drive-control system in embodiment of the present invention, as shown in Figure 1, the mixing
The snowfield drive-control system 10 of power vehicle includes snow field mode switch 11, main control unit 12 and sub-control unit 13, institute
State sub-control unit 13 includes transmission control unit (TCU) 131, electronic stability control unit (ESP) 132 and electrical air again
Control unit (EAS) 133.
Wherein, the snow field mode switch 12 may be disposed on instrument face plate, drive as command signal source is driven
Member's operation, snow field mode enabling signal will be generated by being triggered.
Further, the main control unit 12 is for receiving the snowfield that the snow field mode switch 11 is triggered and generates
Mode starting signal, and the hybrid vehicle is controlled according to the snow field mode enabling signal and enters snow field mode, and
Snow field mode request signal is sent to the sub-control unit 13 under the snow field mode.
The sub-control unit 13 is adjusted the relevant parameter of vehicle in response to the snow field mode request signal, tool
Body may include: the shift opportunity that the TCU 131 makes the hybrid vehicle in response to the snow field mode request signal
Match with the power system operation state；The ESP 132 is described mixed in response to snow field mode request signal control
The ABS for closing power vehicle shortens vehicle braking distance and the TCS of the control hybrid vehicle is sent out to the main control unit
Request is turned round in landing；And the EAS 133 reduces suspension height in response to the snow field mode request signal.
Preferably, the main control unit 11 of embodiment of the present invention can be the HCU of the hybrid vehicle, the HCU
Can be uniformly controlled and manage engine and motor, and using HCU make from software view to vehicle ice and snow road stability
Control, from without additionally increasing new hardware, improving performance while, can save development cost again.
Below by taking HCU as an example, Fig. 2 gives a preferred control of the snowfield drive-control system 10 of embodiment of the present invention
Framework processed.As shown in Fig. 2, the control framework mainly includes following components:
1) snow field mode switchs
When using HCU, the communication of snow field mode switch and HCU is realized using the wiring of hybrid vehicle itself.
Snow field mode switch can transmit snow field mode enabling signal to hybrid vehicle, then by the BCM by LIN line
It is forwarded to CAN network, then is sent to PT-CAN bus through gateway to be received by HCU.Wherein, PT-CAN is a kind of high-speed network
Connection.
2)HCU
After HCU receives snow field mode enabling signal, snow field mode request signal is sent to ESP, TCU, EAS.In addition,
HCU is also preferably used for controlling the engine and the motor under the snow field mode in preset snow field mode gas pedal
Output torque under MAP chart.Wherein the snow field mode gas pedal MAP chart is gentler than standard gas pedal MAP chart.
Fig. 3 is the relational graph shown between gas pedal aperture and output torque, and wherein S301 is standard gas pedal MAP
Figure, S302 are snow field mode gas pedal MAP chart, it will be apparent that S302 ratio S301 is gentle, to show that HCU can be controlled rationally accordingly
Engine processed to the output power of drive axle and motor to the output power of rear drive shaft, and in driver's bend the throttle
When, the output torque for controlling engine and motor is slowly increased, so that vehicle smooth starting and acceleration.
Furthermore it is also possible to configure multiple snow field mode gas pedal MAP chart snowfield road conditions different with correspondence.In this regard, HCU
The relevant sensor signals such as wheel speed sensors can also be received to calculate the degree of stability of current vehicle, and true according to calculated result
Fixed suitable snow field mode gas pedal MAP chart.
Further, battery and electric motors function are affected by extraneous factor, often have that power output is limited or function therefore
The situations such as barrier occur, if still carrying out or switching snow field mode at this time, can generate adverse effect to vehicle dynamical system.Accordingly, HCU
It can be also used for detecting the electricity of the A-battery and/or the failure of the hybrid vehicle, and in the A-battery
There are when failure, control the hybrid vehicle to exit snow field mode for not enough power supply and/or the hybrid vehicle.More
Preferably, when control hybrid vehicle exits snow field mode, also controllable hybrid vehicle switches to conventional operation mould
Formula, so that vehicle dynamical system is run under a comparatively safe mode.Here, it for A-battery, is set from software view
Preservation tactics are set, it is ensured that maintain the certain electricity of battery and prevent failure from further deteriorating.
Further, if vehicle is from the flame-out lower electricity of snow field mode, vehicle has very big probability to remain in snowfield, again on
There is still a need for snow field modes to be assisted after electricity.In this regard, in embodiments of the present invention, HCU is also used to remember the hybrid power
Information when automobile is electric under the snow field mode, and the hybrid power is controlled when the hybrid vehicle powers on again
Automobile enters the snow field mode according to the information remembered.In this way, HCU is made to be provided with schematic memory function, i.e., when from snow
Under ground mode after electricity, powering on rear vehicle driving mode again is still snow field mode.
It is further preferable that can also configure the meter communication of HCU Yu the hybrid vehicle under snow field mode, with to
The instrument sends the prompting message that the hybrid vehicle is in snow field mode, and controls the instrument and show to driver
The prompting message.Preferably, which can be the snow field mode that HCU is generated after control vehicle enters snow field mode
Confirmation signal can be prompted after receiving the signal in instrument, such as prompt: snow field mode, slow down.In addition, also
Chang Xianqu is set in instrument, and display present mode is snowfield, with the mode for reminding driver current constantly.
3)TCU
Effect of the TCU under snow field mode mainly controls shift opportunity, makes gear and power system operation state phase
Match, to guarantee that vehicle dynamical system connects with the soft of transmission system, guarantees the dynamic property and ride comfort of vehicle.
Preferably, TCU makes the shift opportunity of the hybrid vehicle and the power system operation state matches packet
It includes: controlling the hybrid vehicle and shift gears in the case where preset snow field mode shifts gears curve.Fig. 4 shows TCU in snowfield
Shift curve under mode, wherein S401 indicates downshift curve, and S402 indicates upshift curve, in conjunction with Fig. 4, embodiment of the present invention
The characteristics of mainly there are two aspects for the shift of snow field mode:
A, be delayed to second gear starting: conventional one, which blocks up step, can make torque output gradient excessive, therefore be delayed to two herein
Blocking up step leads to the slipping phenomenon that starts to walk to prevent twist-stop square output gradient is excessive；
B, belong to convergence type shift curve, as shown in S402, upshift in advance, and as shown in S401, delay downshift, thus
Driver can be prevented to step on the gas speed changer suddenly in accelerator and make the output of output shaft end torque is excessive to lead to slipping phenomenon.
4)ESP
ESP includes ABS and TCS, and wherein ABS system, which mainly passes through, changes the realization of slip-based controller thresholding to braking system
Control, TCS system, which mainly passes through to change to drop to turn round, requests trigger door threshold to realize the control exported to vehicle power.
Therefore after ESP receives snow field mode request signal, more sensitive vehicle body Stable Control Strategy is switched to.One side
Face, the ESP shorten vehicle braking distance according to the slip-based controller ABS of the hybrid vehicle, and Fig. 5 is shown accordingly
Slip-based controller curve, wherein curve S501 is bituminous pavement slip-based controller curve, and curve S502 is snowfield road surface slip rate
Controlling curve, it is known that under same slip rate, bituminous pavement is easier to reach optimum braking force, thus show snowfield road surface relative to
Bituminous pavement is not easy to brake in time, therefore the vehicle body Stable Control Strategy of embodiment of the present invention changes slip-based controller door
Limit, which is set as more sensitively being worth, so that ABS can be immediately when locking phenomenon occurs in tire in braking process
Triggering utmostly shortens vehicle braking distance, prevents unsafe condition.On the other hand, ESP changes TCS and sends out to the HCU
The drop that request is turned round in landing turns round request trigger door threshold, so that when vehicle is that occur wheel spin skidding in starting or accelerator
When, TCS then starts at once, sends drop to HCU and turns round request, reduces power output, so that vehicle steadily accelerates and starts to walk.
In this vehicle body Stable Control Strategy, ESP primarily serves the effect of protection vehicle stabilization safety in snow field mode.
5)EAS
After EAS receives snow field mode signal, suspension height can be minimized, by changing current value to ensure vehicle
Vehicle is more stable when trackslipping or accelerating.In addition, EAS also adjustable suspension rigidity.
Accordingly, above-mentioned control framework is completed jointly by HCU and engine, TCU, motor, ESP, suspension, A-battery etc.
To oversnow control.
In addition, the sub-control unit 13 can also feed back subsystem to the main control unit 12 in the control framework
System status signal, i.e., the status signal of the described TCU, the ESP and/or the EAS, the main control unit 12 is according to the son
System status signal judges whether each subsystem normally starts the control strategy under snow field mode.
In conclusion the snowfield drive-control system of embodiment of the present invention has been low-voltage-powered new energy automobile type configuration specially
With snow field mode, vehicle is made still to be able to maintain good stability and accelerating ability in ice and snow road, enhances vehicle to driving road
The adaptability of condition, improves intact stability.Also, multiple chassis systems such as TCU, ESP, EAS take part in steady to vehicle jointly
Qualitatively control significantly promotes chassis comprehensive performance.
The foregoing is merely better embodiments of the invention, are not intended to limit the invention, all of the invention
Within spirit and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of snowfield drive-control system of hybrid vehicle, which is characterized in that the dynamical system of the hybrid vehicle
System includes engine, motor and A-battery, and the snowfield drive-control system of the hybrid vehicle includes snow field mode
Switch, main control unit and sub-control unit, the sub-control unit include transmission control unit TCU, electronic stability control again
Unit ESP processed and electronic air suspension control unit EAS；Wherein:
The main control unit, the snow field mode enabling signal for being triggered and generating for receiving the snow field mode switch, and
Control the hybrid vehicle according to the snow field mode enabling signal and enter snow field mode, and under the snow field mode to
The sub-control unit sends snow field mode request signal；
The TCU, in response to the snow field mode request signal make the shift opportunity of the hybrid vehicle with it is described
Power system operation state matches；
The ESP, for controlling the anti-lock braking system ABS of the hybrid vehicle in response to the snow field mode request signal
The torque control system TCS for shortening vehicle braking distance and the control hybrid vehicle initiates to drop to the main control unit
Turn round request；And
The EAS, for reducing suspension height in response to the snow field mode request signal.
2. the snowfield drive-control system of hybrid vehicle according to claim 1, which is characterized in that the main control
Unit is also used to control the engine and the motor under the snow field mode in preset snow field mode gas pedal MAP
Lower output torque is schemed, wherein the snow field mode gas pedal MAP chart is gentler than standard gas pedal MAP chart.
3. the snowfield drive-control system of hybrid vehicle according to claim 1, which is characterized in that the main control
Unit is also used to detect the electricity of the A-battery and/or the failure of the hybrid vehicle, and in the A-battery
There are when failure, control the hybrid vehicle to exit snow field mode for not enough power supply and/or the hybrid vehicle.
4. the snowfield drive-control system of hybrid vehicle according to claim 1, which is characterized in that the main control
Unit is also used to remember information of the hybrid vehicle under the snow field mode when electricity, and in the hybrid vehicle
The hybrid vehicle is controlled when powering on again, and the snow field mode is entered according to the information remembered.
5. the snowfield drive-control system of hybrid vehicle according to claim 1, which is characterized in that the main control
The meter communication of unit and the hybrid vehicle is in snowfield mould for sending the hybrid vehicle to the instrument
The prompting message of formula, and control the instrument and show the prompting message to driver.
6. the snowfield drive-control system of hybrid vehicle according to claim 1, which is characterized in that the TCU makes
It includes: the control hybrid power vapour that the shift opportunity of the hybrid vehicle and the power system operation state, which match,
Vehicle is shifted gears in the case where preset snow field mode shifts gears curve, wherein snow field mode shift curve is configured as making described mix
It closes power vehicle and is delayed to second gear starting, and upshift and delay downshift in advance.
7. the snowfield drive-control system of hybrid vehicle according to claim 1, which is characterized in that the ABS is logical
Change slip-based controller thresholding is crossed to shorten vehicle braking distance and the TCS and change drop and turn round request trigger threshold, and is based on
Drop after change turns round request trigger threshold and initiates drop torsion request to the main control unit.
8. the snowfield drive-control system of hybrid vehicle according to claim 1, which is characterized in that the sub- control
Unit is also used to feed back the status signal of the TCU, the ESP and/or the EAS to the main control unit.
9. the snowfield drive-control system of hybrid vehicle as claimed in any of claims 1 to 8, feature exist
In the main control unit is the mixed dynamic control unit HCU of the hybrid vehicle.
10. the snowfield drive-control system of hybrid vehicle according to claim 9, which is characterized in that the snowfield
Mode switch transmits the car body control module BCM of the snow field mode enabling signal to hybrid vehicle by LIN line, then by
The BCM is forwarded to CAN network, then is sent to PT-CAN bus through gateway to be received by the HCU.
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| CN201710442311.7A CN109080623B (en) | 2017-06-13 | 2017-06-13 | Snow running control system of hybrid electric vehicle |
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| CN201710442311.7A CN109080623B (en) | 2017-06-13 | 2017-06-13 | Snow running control system of hybrid electric vehicle |
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| CN109080623B CN109080623B (en) | 2020-09-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113071473A (en) * | 2021-03-22 | 2021-07-06 | 江铃汽车股份有限公司 | Coordinated control method for EPB mode and AMT gearbox of truck engine |
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| CN109080623B (en) | 2020-09-01 |
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