CN108791260A - A kind of line traffic control brake fluid system assisting redundancy using EPB - Google Patents
A kind of line traffic control brake fluid system assisting redundancy using EPB Download PDFInfo
- Publication number
- CN108791260A CN108791260A CN201810589132.0A CN201810589132A CN108791260A CN 108791260 A CN108791260 A CN 108791260A CN 201810589132 A CN201810589132 A CN 201810589132A CN 108791260 A CN108791260 A CN 108791260A
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- valve
- wheel end
- braking
- redundancy
- epb
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The present invention provides a kind of line traffic control brake fluid system assisting redundancy using EPB, more simple hydraulic circuit is constituted by 12 solenoid valves, to realize line traffic control hydraulic braking and the function that mechanical backup braking is dual system, and has the automatically controlled voltage regulation functions such as brake-by-wire, regenerative braking hydraulic regulation, ABS, TCS, VSC, AEB, ACC, solve the problems, such as that line traffic control brake fluid system solenoid valve quantity is more and oil hydraulic system is complicated.
Description
Technical field
The present invention relates to vehicle braking field more particularly to a kind of line traffic control brake fluid systems assisting redundancy using EPB.
Background technology
Braking system is a series of special arrangements for alloing the travel speed of automobile to force to reduce.Braking system is generally main
It to be made of power supply device, control device, transmission device and 4 part of brake.The main function of braking system is made in traveling
Car deceleration even stop, make descent run car speed keep stablize, so that the automobile of stagnation of movement is remained stationary as.With electricity
The gradual development of braking system is controlled, technical research direction has had developed to line traffic control brake fluid system.And current line traffic control hydraulic pressure
Braking system usually requires greater number of solenoid valve and is controlled, and then cost is caused to increase, and due to the quantity of valve compared with
More, oil hydraulic system is complicated, and production cost is higher and goes wrong and is not easy to investigate, such as published patent
Shown in US20170320477A1.Therefore, solution line traffic control brake fluid system solenoid valve quantity is more and oil hydraulic system structure is multiple
Miscellaneous problem is just particularly important.
Invention content
The object of the present invention is to provide a kind of line traffic control brake fluid systems assisting redundancy using EPB, pass through 12 electromagnetism
Valve constitutes more simple hydraulic circuit, to realize line traffic control hydraulic braking and the function that mechanical backup braking is dual system, and
And have the automatically controlled voltage regulation functions such as brake-by-wire, regenerative braking hydraulic regulation, ABS, TCS, VSC, AEB, ACC, solve line traffic control
The problem that brake fluid system solenoid valve quantity is more and oil hydraulic system is complicated.
The present invention provides a kind of line traffic control brake fluid system assisting redundancy using EPB, including driver input device, master
Cylinder, pedal travel simulator, isolating valve, pressure charging system, electronic control unit and four vehicle traveling wheels；The pressure charging system includes increasing
Press pump and booster electric machine, electronic control unit control booster electric machine and drive booster pump to be increased according to the signal of pedal travel simulator
Pressure；The driver input device is connected on master cylinder, and the master cylinder is connected by oil pipe with pedal travel simulator, vehicle row
It sails and is provided with the braking of wheel end on wheel, be connected by oil pipe between the booster pump and the braking of wheel end, booster pump brakes it with wheel end
Between be provided with wheel end pressure charging valve, wheel end pressure reducing valve is also associated in the braking of the wheel end, is opened to wheel end by taking turns end pressure reducing valve
Braking is depressurized, and the wheel end pressure charging valve is four with wheel end pressure reducing valve, and is travelled wheel with vehicle and corresponded；Described
Wheel end pressure charging valve, wheel end pressure reducing valve have electric signal to connect with electronic control unit, and the action of these solenoid valves is controlled by electronic control unit；
Redundant ECU, the redundant ECU phase of at least one wheel end pressure reducing valve and electronic control unit are provided in the electronic control unit
Association, it is superfluous by the redundant ECU control wheel end pressure reducing valve of electronic control unit when electronic control unit can not work normally
Remaining electronic control unit carries out power control at least one wheel end pressure reducing valve, which can eliminate the liquid in pipeline after end of braking
Press residual voltage；The isolating valve setting is between master cylinder and wheel end pressure charging valve, and two wheel end brakes being connect with isolating valve are in electricity
When control unit can not work normally, pilot control input unit can be realized to this two wheel end brake attainment brake hydraulic pressures.
Further improvement lies in that：There are two circuit control valves for setting between the booster pump and wheel end pressure charging valve, by returning
Line traffic control circuit is divided into two circuits by road control valve, is controlled in pairs four wheel end brakings respectively.
Further improvement lies in that：Be provided with safety valve on the isolating valve, unexpected failure occurs in system and can not
Safety valve is washed open when into expected braking, and pressurization braking is carried out to the braking of wheel end.
Further improvement lies in that：Booster pump is connected to by check valve on oil can, and repairing work is carried out.
Further improvement lies in that：Master cylinder is connect with oil can without by-pass prot, is not depended in the case that driver steps on brake pedal
It can be pressurized to master cylinder by booster pump and booster electric machine, to detect master cylinder with the presence or absence of leakage, pedal travel simulator
Whether failure.
Further improvement lies in that：The circuit control valve is connected to by unidirectional make-up valve on oil can, needs to mend in circuit
Brake fluid is extracted when liquid from oil can.
Further improvement lies in that：Braking system includes that brake-by-wire and mechanical backup brake two operating modes, line traffic control
It is dynamic that pressure charging system is controlled by electronic control unit, and by isolating valve, wheel end pressure charging valve, wheel end pressure reducing valve and circuit control valve coordinate into
Row is realized；The wheel that the mechanical backup braking mechanical backup braking takes turns end booster brake by the hydraulic braking in a circuit to two
End braking is pressurized and drives the wheel end braking intervention clamping force of two EPB clamp to be realized by redundancy unit.
Further improvement lies in that：Stroke sensor is connected on the master cylinder, the stroke sensor is dual signal, wherein
Signal is attached with the redundancy unit in electronic control unit all the way, when electronic control unit main system failure or power-off, redundancy unit
Using the signal of stroke sensor, EPB dynamic brake functions are realized using the signal of stroke sensor.
Further improvement lies in that：Pressure sensor, the redundancy unit and pressure are connected on the pedal travel simulator
Force snesor is attached, when electronic control unit main system failure or power-off when, redundancy unit using pressure sensor signal into
Row work.
Further improvement lies in that：The opening pressure of the safety valve is 0.5 ~ 5MPa.
When failure except system is expected can not carry out expected braking, driver input device continues reinforcement can be with
Valve is opened, to build pressure to wheel end, vehicle braking is made to slow down.
When electronic control unit main system failure or power-off, the hydraulic pressure residual voltage for taking turns end and pipeline can be in redundancy unit at least
One wheel end pressure reducing valve is controlled, to eliminate hydraulic pressure residual voltage.
Master cylinder is connect with oil can T without by-pass prot, and not depending in the case that driver steps on brake pedal can be by being pressurized
Unite and give master cylinder supercharging, to detect master cylinder with the presence or absence of leakage, pedal travel simulator whether the failures such as failure.
System is also equipped with brake-by-wire, regenerative braking hydraulic regulation, the automatically controlled pressure regulation work(such as ABS, TCS, VSC, AEB, ACC
Can, it is also equipped with mechanical backup braking function.
The beneficial effects of the invention are as follows：More simple hydraulic circuit is constituted by 12 solenoid valves, to realize line traffic control liquid
Compacting is dynamic to be the function of dual system with mechanical backup braking, and have brake-by-wire, regenerative braking hydraulic regulation, ABS,
The automatically controlled voltage regulation function such as TCS, VSC, AEB, ACC improves the working efficiency and stability of braking system.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Wherein：1- driver input devices, 2- master cylinders, 3- pedal travel simulators, 4- isolating valves, 5- electronic control unit, 6-
Booster pump, 7- booster electric machines, 8- take turns end braking, and 9- takes turns end pressure charging valve, and 10- takes turns end pressure reducing valve, the circuits 11- control valve, 12- safety
Valve, 13- redundancy units, the unidirectional make-up valves of 14-, 15- pressure sensors.
Specific implementation mode
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described, the embodiment
It is only used for explaining the present invention, be not intended to limit the scope of the present invention..
As shown in Figure 1, present embodiments providing the present invention provides a kind of line traffic control Hydraulic braking system assisting redundancy using EPB
System, including driver input device 1, master cylinder 2, pedal travel simulator 3, isolating valve 4, pressure charging system, electronic control unit 5 and four
Vehicle traveling wheel；The pressure charging system includes booster pump 6 and booster electric machine 7, and electronic control unit 5 controls booster electric machine 7 according to pedal
The signal driving booster pump 6 of stroke simulator 3 is pressurized；The driver input device 1 is connected on master cylinder 2, the master
Cylinder 2 is connected by oil pipe with pedal travel simulator 3, and wheel end braking 8, the booster pump 6 and wheel are provided on vehicle traveling wheel
It is connected by oil pipe between end braking 8, wheel end pressure charging valve 9, the wheel end braking 8 is provided between booster pump 6 and wheel end braking 8
On be also associated with wheel end pressure reducing valve 10, opened by taking turns end pressure reducing valve 10 and the braking of wheel end 8 depressurized, wheel end pressure charging valve
9 with wheel end pressure reducing valve 10 be four, and with vehicle travel wheel correspond；The wheel end pressure charging valve 9, wheel end pressure reducing valve 10
There is electric signal to connect with electronic control unit 5, the action of these solenoid valves is controlled by electronic control unit 5；Setting in the electronic control unit 5
There is redundant ECU 13, at least one wheel end pressure reducing valve 10 is associated with the redundant ECU 13 of electronic control unit 5, passes through electricity
The 13 control wheel end pressure reducing valve 10 of redundant ECU of unit 5 is controlled when electronic control unit 5 can not work normally, redundancy is automatically controlled
Unit 13 carries out power control at least one wheel end pressure reducing valve 10, which can eliminate the hydraulic pressure in pipeline after end of braking
Residual voltage；For the setting of the isolating valve 4 between master cylinder 2 and wheel end pressure charging valve 10, two connect with isolating valve 4 take turns end brakes 8
When electronic control unit 5 can not work normally, pilot control input unit 1 can be realized realizes liquid to this two wheel end brakes 8
Compacting is dynamic.There are two circuit control valves 11 for setting between the booster pump 6 and wheel end pressure charging valve 9, will by circuit control valve 11
Line traffic control circuit is divided into two circuits, is controlled in pairs four wheel end brakings 8 respectively.It is provided on the isolating valve 4
Safety valve 12, washed open when system occurs unexpected failure and cannot be introduced into expected braking safety valve 12 to wheel end braking 8 into
Row pressurization braking.Booster pump 6 is connected to by check valve on oil can, and repairing work is carried out.Master cylinder 2 connects with oil can without by-pass prot
It connects, not depending in the case that driver steps on brake pedal can be pressurized by booster pump 6 and booster electric machine 7 to master cylinder 2, to examine
Measure master cylinder 2 with the presence or absence of leakage, pedal travel simulator 3 whether failure.The circuit control valve 11 passes through unidirectional make-up valve
14 are connected on oil can, extract brake fluid from oil can when circuit needs fluid infusion.Braking system includes brake-by-wire and machinery
Backup two operating modes of braking, brake-by-wire controls pressure charging system by electronic control unit 5, and passes through isolating valve 4, wheel end pressure charging valve
9, it takes turns end pressure reducing valve 10 and the cooperation of circuit control valve 11 is realized；The mechanical backup braking mechanical backup braking is returned by one
The hydraulic braking on road gives the wheel end braking 8 of two wheel end booster brakes to be pressurized and by the two EPB clamp of driving of redundancy unit 13
Braking 8 intervention clamping force in wheel end is realized.Stroke sensor is connected on the master cylinder 2, the stroke sensor is double letters
Number, wherein signal is attached with the redundancy unit 13 in electronic control unit 5 all the way, when 5 main system failure of electronic control unit or power-off
When, redundancy unit 13 realizes EPB dynamic brake functions using the signal of stroke sensor using the signal of stroke sensor.Institute
It states and is connected with pressure sensor 15 on pedal travel simulator 3, the redundancy unit 13 is attached with pressure sensor 15, when
When 5 main system failure of electronic control unit or power-off, redundancy unit 13 is worked using the signal of pressure sensor 15.The safety
The opening pressure of valve 12 is 2.5MPa.More simple hydraulic circuit is constituted by 12 solenoid valves, to realize line traffic control hydraulic pressure system
It is dynamic to be the function of dual system with mechanical backup braking, and have brake-by-wire, regenerative braking hydraulic regulation, ABS, TCS,
The automatically controlled voltage regulation function such as VSC, AEB, ACC improves the working efficiency and stability of braking system.
Claims (10)
1. a kind of line traffic control brake fluid system assisting redundancy using EPB, it is characterised in that：Including driver input device（1）,
Master cylinder（2）, pedal travel simulator（3）, isolating valve（4）, pressure charging system, electronic control unit（5）And four vehicle traveling wheels；It is described
Pressure charging system includes booster pump（6）And booster electric machine（7）, electronic control unit（5）Control booster electric machine（7）It is simulated according to pedal travel
Device（3）Signal drive booster pump（6）It is pressurized；The driver input device（1）It is connected to master cylinder（2）On, the master
Cylinder（2）Pass through oil pipe and pedal travel simulator（3）It is connected, the braking of wheel end is provided on vehicle traveling wheel（8）, the booster pump
（6）With the braking of wheel end（8）Between by oil pipe be connected, booster pump（6）With the braking of wheel end（8）Between be provided with wheel end pressure charging valve
（9）, the wheel end braking（8）On be also associated with wheel end pressure reducing valve（10）, by taking turns end pressure reducing valve（10）It opens to the braking of wheel end
（8）It is depressurized, wheel end pressure charging valve（9）With wheel end pressure reducing valve（10）It is four, and travels wheel with vehicle and correspond；
The wheel end pressure charging valve（9）, wheel end pressure reducing valve（10）With electronic control unit（5）There is electric signal connection, passes through electronic control unit（5）Control
Make the action of these solenoid valves；The electronic control unit（5）Inside it is provided with redundant ECU（13）, at least one wheel end pressure reducing valve
（10）With electronic control unit（5）Redundant ECU（13）It is associated, pass through electronic control unit（5）Redundant ECU（13）Control
Ratch end pressure reducing valve（10）In electronic control unit（5）When can not work normally, redundant ECU（13）To at least one wheel
Hold pressure reducing valve（10）Power control is carried out, which can eliminate the hydraulic pressure residual voltage in pipeline after end of braking；The isolating valve
（4）It is arranged in master cylinder（2）With wheel end pressure charging valve（10）Between, with isolating valve（4）Two wheel end brakes of connection（8）Automatically controlled
Unit（5）When can not work normally, pilot control input unit（1）It can be achieved to this two wheel end brakes（8）Realize liquid
Compacting is dynamic.
2. a kind of line traffic control brake fluid system assisting redundancy using EPB as described in claim 1, it is characterised in that：It is described
Booster pump（6）With wheel end pressure charging valve（9）Between setting there are two circuit control valve（11）, pass through circuit control valve（11）By line traffic control
Circuit is divided into two circuits, respectively to four wheel end brakings（8）It is controlled in pairs.
3. a kind of line traffic control brake fluid system assisting redundancy using EPB as described in claim 1, it is characterised in that：It is described
Isolating valve（4）On be provided with safety valve（12）, peace is washed open when system occurs unexpected failure and cannot be introduced into expected braking
Full valve（12）To the braking of wheel end（8）Carry out pressurization braking.
4. a kind of line traffic control brake fluid system assisting redundancy using EPB as described in claim 1, it is characterised in that：Supercharging
Pump（6）It is connected on oil can by check valve, carries out repairing work.
5. a kind of line traffic control brake fluid system assisting redundancy using EPB as described in claim 1, it is characterised in that：Master cylinder
（2）It is connect without by-pass prot with oil can, booster pump can be passed through by not depending in the case that driver steps on brake pedal（6）With supercharging electricity
Machine（7）To master cylinder（2）Supercharging, to detect master cylinder（2）With the presence or absence of leakage, pedal travel simulator（3）Whether failure.
6. a kind of line traffic control brake fluid system assisting redundancy using EPB as claimed in claim 2, it is characterised in that：It is described
Circuit control valve（11）Pass through unidirectional make-up valve（14）It is connected on oil can, extracts braking from oil can when circuit needs fluid infusion
Liquid.
7. a kind of line traffic control brake fluid system assisting redundancy using EPB as described in claim 1, it is characterised in that：Braking
System includes that brake-by-wire and mechanical backup brake two operating modes, and brake-by-wire is by electronic control unit（5）Pressure charging system is controlled,
And pass through isolating valve（4）, wheel end pressure charging valve（9）, wheel end pressure reducing valve（10）And circuit control valve（11）Cooperation is realized；It is described
Mechanical backup is braked mechanical backup braking and is braked to the wheel end of two wheel end booster brakes by the hydraulic braking in a circuit（8）Increase
It presses and by redundancy unit（13）The wheel end braking of two EPB clamp of driving（8）Intervention clamping force is realized.
8. a kind of line traffic control brake fluid system assisting redundancy using EPB as described in claim 1, it is characterised in that：It is described
Master cylinder（2）On be connected with stroke sensor, the stroke sensor is dual signal, wherein signal and electronic control unit all the way（5）In
Redundancy unit（13）It is attached, works as electronic control unit（5）When main system failure or power-off, redundancy unit（13）It is passed using stroke
The signal of sensor realizes EPB dynamic brake functions using the signal of stroke sensor.
9. a kind of line traffic control brake fluid system assisting redundancy using EPB as described in claim 1, it is characterised in that：It is described
Pedal travel simulator（3）On be connected with pressure sensor（15）, the redundancy unit（13）With pressure sensor（15）It carries out
Connection, works as electronic control unit（5）When main system failure or power-off, redundancy unit（13）Use pressure sensor（15）Signal carry out
Work.
10. a kind of line traffic control brake fluid system assisting redundancy using EPB as claimed in claim 3, it is characterised in that：It is described
Safety valve（12）Opening pressure be 0.5 ~ 5MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810589132.0A CN108791260B (en) | 2018-06-08 | 2018-06-08 | Wire control hydraulic braking system utilizing EPB auxiliary redundancy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810589132.0A CN108791260B (en) | 2018-06-08 | 2018-06-08 | Wire control hydraulic braking system utilizing EPB auxiliary redundancy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108791260A true CN108791260A (en) | 2018-11-13 |
| CN108791260B CN108791260B (en) | 2023-08-11 |
Family
ID=64088078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810589132.0A Active CN108791260B (en) | 2018-06-08 | 2018-06-08 | Wire control hydraulic braking system utilizing EPB auxiliary redundancy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108791260B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110397646A (en) * | 2019-06-27 | 2019-11-01 | 中煤科工集团西安研究院有限公司 | A kind of cylinder control system and control method |
| CN110525409A (en) * | 2019-08-15 | 2019-12-03 | 芜湖伯特利汽车安全系统股份有限公司 | The redundancy service braking system of vehicle |
| CN110641432A (en) * | 2019-10-31 | 2020-01-03 | 东风汽车股份有限公司 | Combined brake control method based on brake-by-wire and electronic parking brake |
| CN110723127A (en) * | 2019-09-29 | 2020-01-24 | 江苏大学 | Fault-tolerant control system and control method for brake-by-wire failure fault of automobile |
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| CN107117153A (en) * | 2017-04-27 | 2017-09-01 | 上海拿森汽车电子有限公司 | A kind of control method of electric controlled brake system, device and electric controlled brake system |
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|---|---|
| CN108791260B (en) | 2023-08-11 |
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