CN107472224A - The Electro-hydraulic brake system of pedal sense during improvement abs braking - Google Patents
The Electro-hydraulic brake system of pedal sense during improvement abs braking Download PDFInfo
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- CN107472224A CN107472224A CN201610405557.2A CN201610405557A CN107472224A CN 107472224 A CN107472224 A CN 107472224A CN 201610405557 A CN201610405557 A CN 201610405557A CN 107472224 A CN107472224 A CN 107472224A
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- wheel
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Classifications
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- 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
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/16—Master control, e.g. master cylinders
- B60T11/228—Pressure-maintaining arrangements, e.g. for replenishing the master cylinder chamber with fluid from a reservoir
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a kind of Electro-hydraulic brake system of pedal sense during improvement abs braking, it includes braking control system and braked channel.The braked channel includes the second servo loop for the first loop of foundation brake and for auxiliary braking.First loop includes master cylinder, master cylinder isolating valve and pressure charging valve and wheel cylinder successively, for the master cylinder port of export to the path between pressure-relief valve arrival end.The second servo loop includes the pressure-relief valve of connection, low pressure accumulator, pump motor and high-voltage energy storage device successively；The braking control system includes electronic control unit, is connected to the master cylinder pressure sensor of master cylinder, is connected to the wheel speed sensors of wheel cylinder.
Description
Technical field
The present invention relates to brake system of car, in particular to pedal during one kind improvement abs braking
The Electro-hydraulic brake system of sensation.
Background technology
At present in automotive control system, the ABS or ESC system of anti-lock are typically equipped with.Current
ABS/ESC products, in abs braking, due to needing constantly decompression and boosting；In pressure reduction
In, pump motor is constantly extracted the liquid being discharged to from wheel cylinder in low pressure accumulator out and returned after over pressurizeed
To master cylinder, now brake pedal can rise；In boost process, the liquid of master cylinder can be pressed back into again
Wheel cylinder, now brake pedal can decline；So circulation, the impression to driver be exactly brake pedal not
Disconnected ground raising and lowering, i.e., so-called pedal jitter phenomenon, pedal sense is uncomfortable, influences driver
Subjective feeling.
The content of the invention
It is a primary object of the present invention to provide a kind of brake pedal feel during improving abs braking
Electro-hydraulic brake system, it solves the problems, such as brake pedal fluctuating shake during abs braking, changed
Kind pedal sense and the subjective feeling of driver.
A kind of according to an aspect of the invention, there is provided Electro-hydraulic brake system for improving pedal sense
System, it includes braking control system and braked channel.The braked channel is included for foundation brake
First loop and the second servo loop for auxiliary braking.First loop includes master cylinder, master cylinder successively
Isolating valve and pressure charging valve and wheel cylinder, for the master cylinder port of export to the path between pressure-relief valve arrival end.It is described
Second servo loop includes the pressure-relief valve of connection, low pressure accumulator, pump motor and high-voltage energy storage device successively.Institute
Stating braking control system includes electronic control unit, the master cylinder pressure sensor for being connected to master cylinder, connection
In the wheel speed sensors of wheel cylinder.As a kind of optional implementation, the pressure-relief valve unloads including trailing wheel
Pressure valve and front-wheel pressure-relief valve, front-wheel pressure-relief valve and trailing wheel pressure-relief valve are connected to the arrival end of low pressure accumulator,
The pump motor is connected to the port of export of low pressure accumulator；The pressure charging valve includes front-wheel pressure charging valve with after
Pressure charging valve is taken turns, the front-wheel pressure charging valve includes the first electromagnetic booster valve and the second check valve in parallel, institute
Stating trailing wheel pressure charging valve includes the second electromagnetic booster valve and the 3rd check valve in parallel；Second check valve
Master cylinder isolating valve is connected to the port of export of the 3rd check valve.
As a kind of optional implementation, the master cylinder isolating valve include electromagnetic isolation valve in parallel with
First check valve；The arrival end of first check valve is connected to the outlet of master cylinder, the outlet of the first check valve
End is connected to the front-wheel pressure charging valve and trailing wheel pressure charging valve of wheel cylinder.
As a kind of optional implementation, the electronic control unit calculates high-voltage energy storage device in real time
The volume of middle liquid and corresponding pressure, when liquid volume exceedes its maximum volume in high-voltage energy storage device
During one predetermined ratio, the electromagnetic isolation valve of master cylinder isolating valve is opened, unnecessary highly pressurised liquid passes through master cylinder
The electromagnetic isolation valve of isolating valve returns to master cylinder.
One the is connected as a kind of optional implementation, between the low pressure accumulator and pump motor
Four check valves, the arrival end of the 4th check valve are connected to the port of export of low pressure accumulator, the 4th check valve
The port of export be connected to pump motor.
As a kind of optional implementation, the arrival end of the high-voltage energy storage device is connected with pump motor,
The port of export of high-voltage energy storage device is further connected between wheel cylinder and master cylinder isolating valve by the 5th check valve；
The port of export of the arrival end connection high-voltage energy storage device of 5th check valve.
As a kind of optional implementation, the electromagnetic isolation valve of the master cylinder isolating valve is normally open valve,
Brake fluid is braked by master cylinder isolating valve into wheel cylinder during normal brake application；Due to having the 5th
The limitation of check valve, liquid will not be just being tapped into high-voltage energy storage device by master cylinder.
It is described to meet ABS when electronic control unit detects to enter as a kind of optional implementation
After entry condition, pressure charging valve is closed, and is opened dropping valve when first time, decompression started, is also switched off simultaneously
The electromagnetic isolation valve of master cylinder isolating valve, the low pressure liquid of low pressure accumulator is flowed into pressure reduction via pump
Motor is pumped into high-voltage energy storage device without being to revert to master cylinder, and pressure raises rapidly in high-voltage energy storage device, at this
Brake pedal does not have rise phenomenon during individual；In ensuing pressurization, dropping valve is closed,
Pressure charging valve is opened, and the highly pressurised liquid in high-voltage energy storage device is pressurized via pressure charging valve into wheel cylinder, and
It is not to be pressurized from master cylinder into wheel cylinder, brake pedal does not have sinkage；So move in circles
Decompression described above, supercharging, the process of decompression.
It is described when coefficient of road adhesion increase causes wheel lock up pressure as a kind of optional implementation
During power increase, the liquid needed for wheel lock up will increase, in larger pressurization mesohigh accumulator
Liquid reduces, and pressure declines, or when other situations cause that pressure is less than master cylinder pressure in high-voltage energy storage device,
Liquid in master cylinder can be pressurized automatically by the first check valve in master cylinder isolating valve into wheel cylinder,
To supplement required liquid；Adhere to when electronic control unit recognizes high coefficient of road adhesion to low path face
Coefficient change when, open master cylinder isolating valve electromagnetic isolation valve, unnecessary highly pressurised liquid caused by decompression from
High-voltage energy storage device returns to master cylinder by the electromagnetic isolation valve of master cylinder isolating valve.
As a kind of optional implementation, in braking procedure, examined when by master cylinder pressure sensor
When survey master cylinder pressure is increased or decreased more than a value, the electromagnetic isolation valve of master cylinder isolating valve is opened, is treated
After master cylinder pressure is stable, the said process again if being circulated still in ABS；ABS circulations are such as exited,
Then ABS exits the electromagnetic isolation valve of rear master cylinder isolating valve and reopened, and returns to conventional brake, high pressure storage
The electromagnetic isolation valve that liquid in energy device can gradually pass through master cylinder isolating valve is returned in master cylinder.
In summary, the present invention between pump motor and master cylinder isolating valve by increasing a high-voltage energy storage
Device improves the pedal sense during abs braking, can be significantly improved homogeneous by high-voltage energy storage device
The pedal sense on road surface, it can also improve the pedal sense on docking road surface.Further, since the present invention does not change
Become the structure of original ESC system, can improve abs braking process by increasing a high-voltage energy storage device
In pedal sense, cost is relatively low.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the one of the present invention
Part, schematic description and description of the invention are used to explain the present invention, not formed to this hair
Bright improper restriction.In the accompanying drawings：
Fig. 1 is the schematic diagram according to the Electro-hydraulic brake system of present pre-ferred embodiments；And
Fig. 2 is the model curve figure according to the high-voltage energy storage device of present pre-ferred embodiments.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that
In the case where not conflicting, the feature in embodiment and embodiment in the present invention can be mutually combined.
The present invention provides a kind of Electro-hydraulic brake system of brake pedal feel during improvement abs braking
System, it is based on brake fluid system of the prior art, traditional ABS/ESC products can be overcome to exist
During abs braking, due in supercharging and pressure reduction, liquid need constantly master cylinder and wheel cylinder it
Between flow, cause the continuous raising and lowering of brake pedal, the uncomfortable phenomenon of pedal sense.
As shown in figure 1, present embodiment illustrates the improvement system of the present invention by taking ESC brakes as an example
The Electro-hydraulic brake system of dynamic pedal sense., brakes is divided into two loops by most of automobiles,
Wherein each two wheels of circuit controls.,, a master cylinder of ESC brakes is only shown in Fig. 1
Loop, to illustrate that the operation principle of ESC brakes, such as the Main cylinder are used to control automobile
Front-wheel 13 and trailing wheel 14, such as the front-wheel 13 and trailing wheel 14 are respectively the near front wheel and off hind wheel.
ESC brakes shown in Fig. 1 includes braking control system and braked channel.Control for brake system
System include electronic control unit (ECU), be connected to master cylinder (Tandom Brake Master Cylindar,
TMC) 1 master cylinder pressure sensor 14, be connected to wheel cylinder (figure do not mark) wheel speed sensors 15,
16 and hydraulic actuator (not shown).Braked channel includes the first loop and use for foundation brake
In the second servo loop of the auxiliary brakings such as such as ABS, ESC.First loop is the master cylinder port of export to unloading
Path between pressure valve arrival end, successively including master cylinder 1, master cylinder isolating valve (MCI, full name) 2,
Pressure charging valve (figure is not marked) and wheel cylinder (figure is not marked).The wheel cylinder includes front-wheel wheel cylinder and trailing wheel wheel cylinder.
The second servo loop be the pressure-relief valve port of export to the path between the high-voltage energy storage device port of export, it is wrapped successively
Include the pressure-relief valve of connection, low pressure accumulator (Low Pressure Accumulator, LPA) 9, pump
Motor 11 and high-voltage energy storage device (High Pressure Accumulator, HPA) 10.In this reality
Apply in example, pressure charging valve includes front-wheel pressure charging valve 5 and trailing wheel pressure charging valve 4, and pressure-relief valve includes front-wheel release
Valve 4 and trailing wheel pressure-relief valve 6.Trailing wheel pressure-relief valve 6 and front-wheel pressure-relief valve 4 are connected to low pressure accumulator 9
Arrival end, pump motor 11 is connected to the port of export of low pressure accumulator 9.For ESC system,
Secondary circuit also includes the low pressure make-up valve 3 being connected between master cylinder 1 and low pressure accumulator 9..
Specifically, master cylinder isolating valve 2 includes the check valve 22 of electromagnetic isolation valve 21 and first in parallel.
The arrival end of first check valve 22 is connected to the outlet of master cylinder 1, and the port of export of the first check valve 22 connects
It is connected to the front-wheel pressure charging valve 5 and trailing wheel pressure charging valve 4 of wheel cylinder.
Front-wheel pressure charging valve 5 includes the first electromagnetic booster valve 51 and the second check valve 52 in parallel, trailing wheel
Pressure charging valve 4 includes the second electromagnetic booster valve 41 and the 3rd check valve 42 in parallel.Second check valve 52
Master cylinder isolating valve 2 is connected to the port of export of the 3rd check valve 42.
Specifically, a 4th check valve 8a is connected between low pressure accumulator 9 and pump motor 11, the
Four check valve 8a arrival end is connected to the port of export of low pressure accumulator 9, and the 4th check valve 8a's goes out
Mouth end is connected to pump motor 11.The arrival end of high-voltage energy storage device 10 is connected with pump motor 11, high pressure storage
Can device 10 the port of export further by the 5th check valve 8b be connected to wheel cylinder and master cylinder isolating valve 2 it
Between.The port of export of 5th check valve 8b arrival end connection high-voltage energy storage device 10.When of the present invention
Improvement brake pedal feel Electro-hydraulic brake system be applied to only the system of ABS products when,
Only need to increase master cylinder isolating valve 2 and master cylinder pressure sensor 14 in original system.
The Electro-hydraulic brake System Working Principle of the improvement brake pedal feel described in Fig. 1 is described below.
The electromagnetic isolation valve 21 of master cylinder isolating valve 2 is normally open valve, the brake fluid during normal brake application
Body is braked by master cylinder isolating valve 2 into wheel cylinder.Due to having the 5th check valve 8b limitation, liquid
Body will not enter high-voltage energy storage device 10 by master cylinder, not influence normal brake feel.
Pressure charging valve is closed after electronic control unit detection meets to enter ABS conditions, meets pressure-lowering condition
When dropping valve open, the electromagnetic isolation valve 21 of master cylinder isolating valve 2 is closed when first time, decompression started,
The low pressure liquid that low pressure accumulator 9 is flowed into pressure reduction is pumped into high-voltage energy storage device via pump motor 11
10 without being to revert to master cylinder, and pressure raises rapidly in high-voltage energy storage device 10, brakes in this process
Pedal does not have rise phenomenon.
In ensuing pressurization, dropping valve is closed, and pressure charging valve is opened, high-voltage energy storage device 10
Interior highly pressurised liquid is pressurized via pressure charging valve into wheel cylinder, rather than is carried out from master cylinder into wheel cylinder
Supercharging, brake pedal do not have sinkage；
So move in circles the process of decompression → supercharging → decompression described above, so as to brake pedal not
Obvious shake is had, driving sensation is relatively good.
When coefficient of road adhesion increase causes wheel lock up pressure increase, the liquid needed for wheel lock up
It will increase, liquid reduces in larger pressurization mesohigh accumulator 10, and pressure declines, or its
When its situation causes that pressure is less than master cylinder pressure in high-voltage energy storage device 10, the liquid in master cylinder can be automatic
It is pressurized by the first check valve 21 in master cylinder isolating valve 2 into wheel cylinder, it is required to supplement
Liquid, now pedal understand some sinkings, but due to having the liquid in high-voltage energy storage device 10, therefore phase
Than in traditional abs braking process, when coefficient of road adhesion increase, the deflection of pedal is much smaller.
When causing the reduction of wheel lock up pressure when coefficient of road adhesion is reduced, the liquid needed for wheel lock up
Body will be reduced, and liquid caused by larger decompression will get to high-voltage energy storage device 10 by pump motor 11
In, pressure will steeply rise in high-voltage energy storage device 10, and high-voltage energy storage device 10 is by nothing after to a certain degree
Method receives all liq caused by decompression, it is possible to liquid in low pressure accumulator 9 can be caused not discharge
The situation of wheel lock up, therefore the electromagnetic isolation valve 21 of master cylinder isolating valve 2 can be opened in situations,
The inner high voltage liquid of high-voltage energy storage device 10 is returned into master cylinder 1, to empty the liquid of low pressure accumulator 9.
Electronic control unit can be calculated in real time by the model of high-voltage energy storage device 10 shown in Fig. 2
The volume of liquid and corresponding pressure in high-voltage energy storage device 10, when liquid volume in high-voltage energy storage device 10
More than its maximum volume a predetermined ratio (ratio can be adjusted according to different automobile types, for example,
80%) when, the electromagnetic isolation valve 21 of opening master cylinder isolating valve 2, unnecessary highly pressurised liquid passes through master cylinder
The electromagnetic isolation valve 21 of isolating valve 2 returns to master cylinder 1.
In fig. 2, transverse axis P represents the pressure of high-voltage energy storage device 10, and longitudinal axis V represents high-voltage energy storage
The volume of device 10.Wherein, PSTARTFor the initial pressure of high-voltage energy storage device 10, such as 70bar, one
Aspect can be used for liquid in end of braking heel row sky high-voltage energy storage device 10, on the other hand in such as AYC or
Reduce when TCS is intervened and build the pressure time.PMAXFor the maximum pressure of high-voltage energy storage device 10, such as 200bar,
VMAXIt is beneficial to volume during maximum pressure, when electronic control unit recognizes height for high-voltage energy storage device 10
Coefficient of road adhesion to low coefficient of road adhesion change when, open the electromagnetic isolation valve of master cylinder isolating valve 2
21, electromagnetism of the unnecessary highly pressurised liquid from high-voltage energy storage device 10 by master cylinder isolating valve 2 caused by decompression
Isolating valve 21 returns to master cylinder 1.
For liquid during high-voltage energy storage device 10 returns to master cylinder, brake pedal has rising；Compared to
Road surface is adhered to attached number and diminished the ascending amount of bumper step during traditional abs braking, electro-hydraulic multiple after improvement
Brakes is closed to be much smaller due to playing the role of high-voltage energy storage device 10, pedal variable quantity.
In braking procedure, increased or decreased when detecting master cylinder pressure by master cylinder pressure sensor 11
During more than a value, driver's pine brake pedal is identified as, now opens the electromagnetism of master cylinder isolating valve 2
Isolating valve 21；After master cylinder pressure is stable, the said process again if being circulated still in ABS.Such as
Exiting ABS circulations, then ABS exits the electromagnetic isolation valve 21 of rear master cylinder isolating valve 2 and reopened,
Conventional brake is returned to, due to the P of high-voltage energy storage device characteristicSTARTMore than zero, in high-voltage energy storage device 10
The electromagnetic isolation valve 21 that liquid can gradually pass through master cylinder isolating valve 2 is returned in master cylinder.
When there is other functions to intervene, such as active yaw control system or TCS
(Active Yaw Control Systems or Traction Control System, AYC/TCS)
During intervention, above control logic exits, and the electromagnetic isolation valve 21 of master cylinder isolating valve 2 is according to AYC/TCS
Logic be controlled.
Improved by increasing a high-voltage energy storage device 10 between pump motor 11 and master cylinder isolating valve 2
Pedal sense in ABS/ESC braking procedures, in summary, can significantly it be changed by high-voltage energy storage device 10
It is apt to the pedal sense on homogeneous road surface, can also improves the pedal sense on docking road surface.Further, since this
Invention does not change the structure of original ESC system, can be improved by increasing a high-voltage energy storage device 10
Pedal sense during abs braking, cost are relatively low.
From on the other hand, the present invention also provides a kind of vehicles of such as automobile, and it has above-mentioned
Improve the Electro-hydraulic brake system of brake pedal feel.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for
For those skilled in the art, the present invention can have various modifications and variations.All essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the present invention with principle
Protection domain within.
Claims (10)
1. a kind of Electro-hydraulic brake system for improving pedal sense, it includes braking control system and braking
Path, it is characterised in that the braked channel includes the first loop and use for foundation brake
In the second servo loop of auxiliary braking；First loop successively include master cylinder, master cylinder isolating valve and
Pressure charging valve and wheel cylinder, for the master cylinder port of export to the path between pressure-relief valve arrival end；Described second
Loop includes the pressure-relief valve of connection, low pressure accumulator, pump motor and high-voltage energy storage device successively；Institute
State braking control system include electronic control unit, be connected to master cylinder master cylinder pressure sensor,
It is connected to the wheel speed sensors of wheel cylinder.
2. Electro-hydraulic brake system according to claim 1, it is characterised in that the pressure-relief valve
Including trailing wheel pressure-relief valve and front-wheel pressure-relief valve, front-wheel pressure-relief valve and trailing wheel pressure-relief valve are connected to low pressure
The arrival end of accumulator, the pump motor are connected to the port of export of low pressure accumulator；The supercharging
Valve includes front-wheel pressure charging valve and trailing wheel pressure charging valve, and the front-wheel pressure charging valve includes the first electricity in parallel
Magnetic pressure charging valve and the second check valve, the trailing wheel pressure charging valve include the second electromagnetic booster valve in parallel
And the 3rd check valve；The port of export of second check valve and the 3rd check valve is connected to master cylinder
Isolating valve.
3. Electro-hydraulic brake system according to claim 1, it is characterised in that the master cylinder every
Include electromagnetic isolation valve and the first check valve in parallel from valve；The arrival end connection of first check valve
To the outlet of master cylinder, the port of export of the first check valve is connected to the front-wheel pressure charging valve and trailing wheel of wheel cylinder
Pressure charging valve.
4. Electro-hydraulic brake system according to claim 3, it is characterised in that Electronic Control list
Member calculates the volume of liquid and corresponding pressure in high-voltage energy storage device in real time, works as high-voltage energy storage device
When middle liquid volume exceedes a predetermined ratio of its maximum volume, the electromagnetism of master cylinder isolating valve is opened
Isolating valve, unnecessary highly pressurised liquid return to master cylinder by the electromagnetic isolation valve of master cylinder isolating valve.
5. Electro-hydraulic brake system according to claim 1, it is characterised in that the low pressure storage
The 4th check valve can be connected between device and pump motor, the arrival end of the 4th check valve is connected to
The port of export of low pressure accumulator, the port of export of the 4th check valve are connected to pump motor.
6. according to the Electro-hydraulic brake system described in claim any one of 1-5, it is characterised in that institute
The arrival end for stating high-voltage energy storage device is connected with pump motor, and the port of export of high-voltage energy storage device further leads to
The 5th check valve is crossed to be connected between wheel cylinder and master cylinder isolating valve；The entrance of 5th check valve
The port of export of end connection high-voltage energy storage device.
7. Electro-hydraulic brake system according to claim 6, it is characterised in that the master cylinder every
Electromagnetic isolation valve from valve is normally open valve, and brake fluid is isolated by master cylinder during normal brake application
Valve is braked into wheel cylinder；Due to there is the limitation of the 5th check valve, liquid will not be by master cylinder just
Tap into high-voltage energy storage device.
8. Electro-hydraulic brake system according to claim 7, it is characterised in that work as Electronic Control
Unit detects that into after meeting ABS entry conditions pressure charging valve is closed, and in first time, decompression is opened
Dropping valve is opened during the beginning, while is also switched off the electromagnetic isolation valve of master cylinder isolating valve, in pressure reduction
The low pressure liquid for flowing into low pressure accumulator is pumped into high-voltage energy storage device without being to revert to via pump motor
Master cylinder, pressure raises rapidly in high-voltage energy storage device, and brake pedal does not have in this process
Rise phenomenon；In ensuing pressurization, dropping valve is closed, and pressure charging valve is opened, high pressure storage
Highly pressurised liquid in energy device is pressurized via pressure charging valve into wheel cylinder, rather than is entered from master cylinder
Wheel cylinder is pressurized, and brake pedal does not have sinkage；So move in circles described above
Decompression, supercharging, the process of decompression.
9. Electro-hydraulic brake system according to claim 6, it is characterised in that when road surface is adhered to
When coefficient increase causes wheel lock up pressure increase, the liquid needed for wheel lock up will increase, compared with
Liquid reduces in big pressurization mesohigh accumulator, and pressure declines, or other situations cause
When pressure is less than master cylinder pressure in high-voltage energy storage device, liquid in master cylinder can automatically by master cylinder every
It is pressurized from the first check valve in valve into wheel cylinder, to supplement required liquid；Work as electronics
Control unit recognize high coefficient of road adhesion to low coefficient of road adhesion change when, open master cylinder
The electromagnetic isolation valve of isolating valve, unnecessary highly pressurised liquid caused by decompression pass through master from high-voltage energy storage device
The electromagnetic isolation valve of cylinder isolating valve returns to master cylinder.
10. Electro-hydraulic brake system according to claim 6, it is characterised in that braking
Cheng Zhong, when being increased or decreased by master cylinder pressure sensor detection master cylinder pressure more than a value,
The electromagnetic isolation valve of master cylinder isolating valve is opened, after master cylinder pressure is stable, if still in ABS
Circulation then said process again；ABS circulations are such as exited, then ABS exits rear master cylinder isolating valve
Electromagnetic isolation valve reopens, and returns to conventional brake, and the liquid in high-voltage energy storage device can gradually lead to
The electromagnetic isolation valve for crossing master cylinder isolating valve is returned in master cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610405557.2A CN107472224A (en) | 2016-06-08 | 2016-06-08 | The Electro-hydraulic brake system of pedal sense during improvement abs braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610405557.2A CN107472224A (en) | 2016-06-08 | 2016-06-08 | The Electro-hydraulic brake system of pedal sense during improvement abs braking |
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| Publication Number | Publication Date |
|---|---|
| CN107472224A true CN107472224A (en) | 2017-12-15 |
Family
ID=60594343
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610405557.2A Pending CN107472224A (en) | 2016-06-08 | 2016-06-08 | The Electro-hydraulic brake system of pedal sense during improvement abs braking |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110015281A (en) * | 2017-12-22 | 2019-07-16 | 罗伯特·博世有限公司 | The motor vehicle braking system imitated with ABS |
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| JPH04231251A (en) * | 1990-05-17 | 1992-08-20 | Alfred Teves Gmbh | Hydraulic brake system also functioning as anti-lock control |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4278300A (en) * | 1978-07-24 | 1981-07-14 | Societe Anonyme Francaise Du Ferodo | Hydraulic braking circuit for an automobile vehicle |
| JPH04231251A (en) * | 1990-05-17 | 1992-08-20 | Alfred Teves Gmbh | Hydraulic brake system also functioning as anti-lock control |
| DE4030871A1 (en) * | 1990-09-29 | 1992-04-02 | Bosch Gmbh Robert | Vehicular hydraulic braking system with antilock protection device - includes two pressure reservoirs and recirculation of brake fluid, with safety valve to protect smaller reservoir |
| US5628550A (en) * | 1991-10-18 | 1997-05-13 | Itt Automotive Europe Gmbh | Anti-lock hydraulic brake system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110015281A (en) * | 2017-12-22 | 2019-07-16 | 罗伯特·博世有限公司 | The motor vehicle braking system imitated with ABS |
| CN110015281B (en) * | 2017-12-22 | 2022-06-28 | 罗伯特·博世有限公司 | Vehicle braking system with ABS emulation |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171215 |
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| RJ01 | Rejection of invention patent application after publication |