CN104149765B - Car electronic and hydraulic brake system capable of realizing time-sharing control - Google Patents
Car electronic and hydraulic brake system capable of realizing time-sharing control Download PDFInfo
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- CN104149765B CN104149765B CN201410409485.XA CN201410409485A CN104149765B CN 104149765 B CN104149765 B CN 104149765B CN 201410409485 A CN201410409485 A CN 201410409485A CN 104149765 B CN104149765 B CN 104149765B
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- 230000005540 biological transmission Effects 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 14
- 238000004146 energy storage Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 2
- 230000001172 regenerating effect Effects 0.000 abstract description 3
- 230000006837 decompression Effects 0.000 description 12
- 239000012530 fluid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
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Abstract
The invention relates to a car electronic and hydraulic brake system capable of realizing time-sharing control. The car electronic and hydraulic brake system comprises a brake output unit, a hydraulic control unit, a brake execution unit and an electronic control unit. The system does not depend on engine vacuum, hydraulic forces of all brake cylinders are independently adjusted, and a pedaling feeling same as that of traditional brake is provided for a driver. Compared with an existing typical electronic and hydraulic brake system, time-sharing control over all brake channels can be realized, the brake channels do not need to be provided with independent pressure increasing valves and pressure reducing valves, the number of electromagnetic valves in the hydraulic control unit is reduced, and therefore the system is simpler in structure and smaller in size and weight. By means of the car electronic and hydraulic brake system, coordinated control over basic brake, other brake functions like ABS/ESP and regenerative brake can be realized.
Description
Technical field
The present invention relates to a kind of brakes, especially with regard to a kind of Automotive electronic hydraulic braking of achievable Time-sharing control
System.
Background technology
Development with automotive engineering gradually steps up to requirements such as vehicle safety, energy-saving and environmental protection, active safety feature
(as electronic stability program (esp)) and electric vehicle engineering constantly develop.The two requirement new to motor vehicle braking system proposition:
It is capable of the brake pressure of each wheel cylinder of independent control, brake pedal and Conventional braking systems identical brake feel are provided.Additionally,
Electric automobile also requires brakes to be independent of engine vacuum.
In recent years, line control brake system can meet the novel braking system of requirements above as a class, is increasingly closed
Note.Wherein EHB, remains the fluid pressure line of Conventional braking systems, than electromechanical braking system exploitation
Difficulty is less, reliability higher it is easier to design standby brakes, become the main flow side that line control brake system is applied in real vehicle
Case.The scheme of EHB mainly includes following two:
Scheme one is conditional electronic brake fluid system, the sbc system (sae paper 960991) with Bosch and Toyota
Ecb system (sae paper 2002-01-0300) is representative: drives hydraulic pump with direct current generator, is filled with braking to high pressure accumulator
Liquid, high pressure accumulator is supplied to wheel cylinder as pressure source, and the pressure of single wheel cylinder is adjusted by a pressure charging valve and one
Pressure-reducing valve realizing, in addition with some balanced valves/fail safe valve.The program is typically at least using 12 magnetic valves.This kind of
The shortcoming of scheme is: magnetic valve number is many, and structure is complex, and volume weight is often larger.
Scheme two is integrated type electrical brake fluid system, and the integrated form scheme that such as patent us8371661b2 proposes only makes
There is provided pressure source with a motor pushing master cylinder piston, and 4 electromagnetism valve regulation pressure of wheel cylinder, with conditional electronic hydraulic pressure
Brakes is compared, and magnetic valve number is few, and structure simplifies, and volume weight reduces.The shortcoming of this kind of scheme is: special to motor dynamics
Property requirement very high, standby braking is difficult to design, and the idle stroke of pedal easily generates a panic to driver.
Content of the invention
For the problems referred to above, it is an object of the invention to provide a kind of magnetic valve quantity is few, structure simple and without high-performance
The Automobile Electro-hydraulic Brake System of the achievable Time-sharing control of motor.
For achieving the above object, the present invention employs the following technical solutions: a kind of automotive electronics liquid of achievable Time-sharing control
Pressure brakes is it is characterised in that it includes a braking output unit, a hydraulic control unit, a brake execution unit and
Electronic control unit；Described braking output unit includes a master cylinder housing, interval setting first piston in described master cylinder housing
And second piston, form first piston inner chamber between described first piston and described second piston, in described first piston inner chamber
Inside it is provided with the first spring that two ends are connected respectively with described first piston, second piston；Described second piston and described master
Form second piston inner chamber between cylinder housing, be provided with two ends in described second piston inner chamber and live with described second respectively
The second spring that plug, described master cylinder inner walls connect；The outside of described first piston connects one end of a master cylinder push rod, described
The other end of master cylinder push rod connects a brake pedal, is provided with a PTS on described brake pedal；It is being located at
One oil-in and one fuel-displaced is respectively arranged with the described master cylinder housing of described first piston inner chamber and second piston inner chamber periphery
Mouthful, oil-in described in two is connected with a liquid storing cup, and wherein described in one, oil-out passes through a brake piping connection one pedal travel mould
Intend device；One simulator is provided with the brake piping between described oil-out and described pedal travel simulator control
Valve；Described hydraulic control unit includes a motor, and the output end of described motor connects a hydraulic pump, and one end of described hydraulic pump leads to
Cross brake piping and connect described liquid storing cup, the other end connects a high pressure accumulator by brake piping, storing positioned at described high pressure
A check valve can be provided with brake piping between device and described hydraulic pump；The other end of described high pressure accumulator passes through braking
Pipeline connects a braking transmission main line, described braking transmit main line pass through respectively another on brake piping and described master cylinder housing
Described oil-out, described liquid storing cup connect；Transmitting the brake pipe between main line positioned at described high pressure accumulator and described braking
One pressure charging valve is provided with road, the brake piping between described high pressure accumulator and described pressure charging valve is provided with a storage
Can device pressure sensor；The brake piping transmitting between main line positioned at described oil-out and described braking is provided with an inefficacy
Protection valve；The brake piping transmitting between main line positioned at described liquid storing cup and described braking is provided with a pressure-reducing valve；Described
Braking transmission main line is provided with a main line pressure sensor；Described brake execution unit includes a left front brake, a right side
Front brake, a left back brake and a right rear brake；Described left front brake, right front brake, left back brake and the right side
Rear brake is passed through a brake piping respectively and is connected with described braking transmission main line；Positioned at described left front brake and described system
It is provided with a left front pressure-regulating valve, positioned at described left front pressure-regulating valve and institute on brake piping between dynamic transmission main line
State and a left front pressure sensor is provided with the brake piping between left front brake；Positioned at described right front brake with described
Braking transmission main line between brake piping on be provided with pressure-regulating valve before a right side, positioned at described the right side before pressure-regulating valve with
Pressure sensor before one right side is provided with the brake piping between described right front brake；Positioned at described left back brake and institute
State and be provided with a left back pressure-regulating valve, positioned at described left back pressure-regulating valve on the brake piping between braking transmission main line
One left back pressure sensor is provided with the brake piping and described left back brake between；Positioned at described right rear brake with
It is provided with pressure-regulating valve behind a right side on brake piping between described braking transmission main line, adjust in pressure behind the described right side
It is provided with pressure sensor behind a right side on brake piping between valve and described right rear brake；Described electronic control unit is respectively
Electrically connect described motor, PTS, energy storage pressure sensor, main line pressure sensor, left front pressure sensor,
The right side before pressure sensor, left back pressure sensor, the right side after pressure sensor, simulator control valve, pressure charging valve, fail safe valve,
Pressure-reducing valve, left front pressure-regulating valve, pressure-regulating valve before the right side, pressure-regulating valve behind left back pressure-regulating valve and the right side.
Described pedal travel simulator includes a simulator housing, is provided with a simulator and lives in described simulator housing
Plug, is provided with a simulator spring, described emulator piston between the side of described emulator piston and described simulator housing
Opposite side to described simulator housing be connected with brake piping.
Described simulator control valve, pressure charging valve, fail safe valve, pressure-reducing valve, left front pressure-regulating valve, the right side before pressure adjust
Behind valve, left back pressure-regulating valve and the right side, pressure-regulating valve is two-position two-way solenoid valve, and described simulator control valve, pressure-reducing valve
Be normally close valve with pressure charging valve, described fail safe valve, left front pressure-regulating valve, the right side before pressure-regulating valve, left back pressure-regulating valve
It is normally open valve with pressure-regulating valve behind the right side.
Due to taking above technical scheme, it has the advantage that the 1, present invention is provided with four paths respectively to the present invention
It is connected with four brakes, every paths are respectively arranged with a pressure-regulating valve, four paths can carry out Time-sharing control, because
This each passage need not arrange single pressure charging valve and pressure-reducing valve, and compared with conditional electronic brake fluid system, magnetic valve quantity is few,
Structure is simple.2nd, the present invention adopts high pressure accumulator as pressure source, motor is required relatively low, and prepares after easy design realization
Dynamic.3rd, the present invention does not rely on engine vacuum, whether there is with engine and operating is unrelated.4th, the present invention is by Electronic Control list
Unit from corresponding sensors for data and control magnetic valve can optimized integration braking function and other braking function such as
Abs/esp and regenerative brake coordination control；5th, the present invention can each wheel cylinder separately adjustable pressure, and do not affect to step on
Plate is felt, using the teaching of the invention it is possible to provide driver and sensitive brake system identical pedal sense.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the control of the pressure output of each pressure sensor and each magnetic valve in the example of a pressure Time-sharing control
Situation.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is described in detail.
The present invention includes a braking output unit 1, a hydraulic control unit 2, a brake execution unit 3 and an Electronic Control
Unit 4.
Braking output unit 1 includes a master cylinder housing 101, is arranged at intervals with first piston 102 He in master cylinder housing 101
Second piston 103, forms first piston inner chamber 104 between first piston 102 and second piston 103, in first piston inner chamber 104
Inside it is provided with the first spring 105 that two ends are connected respectively with first piston 102, second piston 103；Second piston and master cylinder shell
Form second piston inner chamber 106 between body, be provided with second piston inner chamber 106 two ends respectively with second piston 103, main
The second spring 107 that cylinder housing 101 inwall connects.The outside of first piston 102 connects one end of a master cylinder push rod 108, master cylinder
The other end of push rod 108 connects a brake pedal 109, is provided with a PTS 110 on brake pedal 109.?
Be respectively arranged with the master cylinder housing 101 of first piston inner chamber 104 and second piston inner chamber 106 periphery an oil-in 111,
112 and an oil-out 113,114, two oil-ins 111,112 are connected with a liquid storing cup 115, and wherein one oil-out 114 passes through one and makes
Dynamic pipeline connects a pedal travel simulator 116.In the brake pipe between oil-out 114 and pedal travel simulator 116
One simulator control valve 117 is provided with road.
Hydraulic control unit 2 includes a motor 201, and the output end of motor 201 connects a hydraulic pump 202, hydraulic pump 202
One end connects liquid storing cup 115 by brake piping, and the other end connects a high pressure accumulator 203 by brake piping, positioned at height
It is provided with a check valve 204 on brake piping between pressure accumulator 203 and hydraulic pump 202.The other end of high pressure accumulator 203
One braking transmission main line 205 is connected by brake piping, braking transmission main line 205 passes through brake piping and master cylinder housing respectively
Another oil-out 113 on 101, liquid storing cup 115 connect.Between high pressure accumulator 203 and braking transmission main line 205
One pressure charging valve 206 is provided with brake piping, the brake piping between high pressure accumulator 203 and pressure charging valve 206 sets
It is equipped with an energy storage pressure sensor 207；Brake piping between oil-out 113 and braking transmission main line 205 sets
It is equipped with a fail safe valve 208；Brake piping between liquid storing cup 115 and braking transmission main line 205 is provided with one
Pressure-reducing valve 209.Braking transmission main line 205 is additionally provided with a main line pressure sensor 210.
Brake execution unit 3 includes a left front brake 301, a right front brake 302, a left back brake 303 and
Right rear brake 304.Left front brake 301, right front brake 302, left back brake 303 and right rear brake 304 are led to respectively
Cross a brake piping to be connected with braking transmission main line 205.Between left front brake 301 and braking transmission main line 205
One left front pressure-regulating valve 305 is provided with brake piping, positioned at left front pressure-regulating valve 305 and left front brake 301 it
Between brake piping on be provided with a left front pressure sensor 306；Positioned at right front brake 302 and braking transmission main line 205
Between brake piping on be provided with pressure-regulating valve 307 before a right side, in pressure-regulating valve 307 and right front brake before the right side
Pressure sensor 308 before one right side is provided with the brake piping between 302；Dry with braking transmission positioned at left back brake 303
One left back pressure-regulating valve 309 is provided with the brake piping between road 205, positioned at left back pressure-regulating valve 309 with left back
One left back pressure sensor 310 is provided with the brake piping between brake 303；Positioned at right rear brake 304 and braking
It is provided with pressure-regulating valve 311 behind a right side, in pressure-regulating valve 311 behind the right side on brake piping between transmission main line 205
Pressure sensor 312 behind one right side is provided with the brake piping and right rear brake 304 between.
Electronic control unit 4 be electrically connected motor 201, PTS 110, energy storage pressure sensor 207,
Main line pressure sensor 210, left front pressure sensor 306, the right side before pressure sensor 308, left back pressure sensor 310, the right side after
Pressure sensor 312, simulator control valve 117, pressure charging valve 206, fail safe valve 208, pressure-reducing valve 209, left front pressure are adjusted
Pressure-regulating valve 311 behind pressure-regulating valve 307, left back pressure-regulating valve 309 and the right side before valve 305, the right side.
In the above-described embodiments, pedal travel simulator 113 includes a simulator housing 118, in simulator housing 118
It is provided with an emulator piston 119, between the side of emulator piston 119 and simulator housing 118, be provided with a simulator bullet
Spring 120, the opposite side of emulator piston 119 to simulator housing 118 be connected with brake piping.
In the above-described embodiments, simulator control valve 117, pressure charging valve 206, fail safe valve 208, pressure-reducing valve 209, left front
Behind pressure-regulating valve 307, left back pressure-regulating valve 309 and the right side before pressure-regulating valve 305, the right side, pressure-regulating valve 311 is two
Two-way electromagnetic valve, and simulator control valve 117, pressure-reducing valve 209 and pressure charging valve 206 are normally close valve, fail safe valve 208, left front
Behind pressure-regulating valve 307, left back pressure-regulating valve 309 and the right side before pressure-regulating valve 305, the right side, pressure-regulating valve 311 is normally open valve.
The operation principle of the detailed description present invention, the course of work and control method below in conjunction with the accompanying drawings:
During system worked well of the present invention, the effect of described high pressure accumulator 203 is that instead of in Conventional braking systems
Driver and vacuum booster, provide brake pressure source, by rational driving pressure charging valve 206, pressure-reducing valve 209 and 4 pressure
Regulating valve 305,307,309,311 is adjusting four pressure of wheel braking cylinder.Specifically, when brake pedal 109 is operated, electronics control
Unit 4 processed receives the pedal travel data of PTS 110 collection, controls simulator control valve 117 energising to open, system
Hydrodynamic enters pedal travel simulator 116 by piston first inner chamber 104 through simulator control valve 117, thus carrying for driver
For with Conventional braking systems identical pedal sense.Meanwhile, electronic control unit 4 calculates each braking according to pedal travel data
The wheel cylinder goal pressure of device 301,302,303,304, collects each from four Wheel cylinder pressure sensors 306,308,310,312
The actual pressure of wheel cylinder, thus determine add drop/pressurize operation that each wheel cylinder should be implemented.Structure in system of the present invention
On, each passage only adjusts this channel pressure using a pressure-regulating valve, rather than uses single pressure charging valve, pressure-reducing valve,
Therefore using Time-sharing control method, each wheel cylinder must be implemented with corresponding add drop/pressurize operation, thus realizing goal pressure.
The operation of each passage divides three kinds of situations:
(1) four passage is all pressurized or pressurize: now pressure charging valve 206 energising is opened, and pressure-reducing valve 209 power-off is closed, and loses efficacy
Protection valve 208 energising is closed, and drives four pressure-regulating valves 305,307,309,311 to make wheel cylinder by suitable pwm dutycycle
Reach goal pressure.By goal pressure, actual pressure and the braking transmission that collected by main line pressure sensor 210 is dry for dutycycle
Road calculation of pressure obtains.
(2) four passages all reduce pressure or pressurize: now pressure charging valve 206 power-off is closed, and pressure-reducing valve 209 energising is opened, and loses efficacy
Protection valve 208 energising is closed, and drives four pressure-regulating valves 305,307,309,311 to make wheel cylinder by suitable pwm dutycycle
Reach goal pressure.By goal pressure, actual pressure and main line is transmitted in the braking that obtained by main line pressure sensor 210 to dutycycle
Calculation of pressure obtains.
(3) four passage superchargings, decompressions exist it is also possible to there is pressurize simultaneously: now pressure must carry out timesharing control
System, that is, control and be divided into former and later two stages: pressurization stages and decompression phase.During pressurization stages, pressure charging valve 209 energising is opened, and subtracts
Pressure valve 209 power-off is closed, and fail safe valve 208 energising is closed, and the passage implementing blower operations is driven by suitable pwm dutycycle
Move corresponding pressure-regulating valve, the channel pressure regulating valve energising implementing decompression with pressurize operation is closed, to keep pressure constant；
During decompression phase, pressure charging valve 206 power-off is closed, and pressure-reducing valve 209 energising is opened, and fail safe valve 208 energising is closed, and implements decompression
The passage of operation drives corresponding pressure-regulating valve by suitable pwm dutycycle, implements the passage pressure of supercharging and pressurize operation
Force regulating valve energising is closed, to keep pressure constant.Dutycycle is by goal pressure, actual pressure and by main line pressure sensor
The braking transmission main line calculation of pressure that 210 obtain obtains.
Fig. 2 gives the example of a pressure Time-sharing control.In this example, off-front wheel, left rear wheel initial pressure are 0mpa,
Goal pressure is maximum, and the near front wheel, off hind wheel initial pressure are maximum, and goal pressure is 0mpa, i.e. two passage superchargings
Occur with two passage decompressions simultaneously.Stress control starts from 3.76s, and choosing controlling cycle in this example is 10ms, controls week
Interim pressurization stages and decompression phase are 5ms.Curve in Fig. 2 represents the output of six pressure sensors and six electromagnetism
The control of valve.Wherein, six pressure sensors are output as: energy storage pressure (energy storage pressure sensor 207 exports), left front
Wheel pressure (left front pressure sensor 306 exports), off-front wheel pressure (before the right side, pressure sensor 308 exports), left rear wheel pressure are (left
Pressure sensor 310 exports afterwards), off hind wheel pressure (right side after pressure sensor 312 export), braking transmission main line pressure (main line
Pressure sensor 210 exports)；In the controlling curve of six magnetic valves, 1 opens for magnetic valve, and 0 is closed electromagnetic valve.Six electricity
Magnet valve be respectively as follows: pressure charging valve 206, pressure-reducing valve 209, left front pressure-regulating valve 305, the right side before pressure-regulating valve 307, left back pressure adjust
Pressure-regulating valve 311 after section valve 309, the right side.
Pressure controlled detailed process: from the beginning of 3.755s, each controlling cycle sequentially enters pressurization stages and decompression rank
Section, until each wheel cylinder all reaches goal pressure.For example in 3.775s, during entrance, the pressurization stages of a length of 5ms, are now pressurized
Valve 206 is opened immediately, and pressure-reducing valve 209 cuts out immediately, and braking transmission main line pressure raises rapidly.After a period of time, braking passes
Defeated main line pressure is more than now off-front wheel cylinder and left back pressure of wheel braking cylinder, pressure-regulating valve 307 and left back pressure-regulating valve 309 before the right side
Open, off-front wheel and left rear wheel pressure rise.Before a period of time that pressurization stages terminate, pressure-regulating valve 307 and left back before the right side
Pressure-regulating valve 309 cuts out.During 3.78s, the decompression phase of a length of 5ms during entrance, now pressure charging valve 206 close immediately, decompression
Valve 209 is opened immediately, and braking transmission main line pressure reduces rapidly.After a period of time, braking transmission main line pressure is less than now
Left front wheel cylinder and off hind wheel cylinder pressure, after left front pressure-regulating valve 305 and the right side, pressure-regulating valve 311 is opened, after the near front wheel and the right side
Wheel reduced pressure.Before a period of time that decompression phase terminates, after left front pressure-regulating valve 305 and the right side, pressure-regulating valve 311 cuts out.
Pressurization stages are so circulated with decompression phase, thus realizing the Time-sharing control of pressure.
The pressure source of described system is derived from high pressure accumulator 203, the pressure control procedure of high pressure accumulator 203: electronics control
Unit 4 processed obtains energy storage pressure by energy storage pressure sensor 207, if pressure is less than certain thresholding, motor 201 carries
Hydrodynamic press pump 202, is filled with brake fluid thus increasing energy storage pressure to high pressure accumulator 203, when energy storage pressure reaches necessarily
During thresholding, motor 201 power-off stall.
Braking procedure based on the above course of work, such as will realize other braking functions such as abs/esp/acc etc., or needs
Coordinate control with regenerative braking, be then provided to the corresponding sensing data of electronic control unit 4, by Electronic Control list
The target braking forces of unit 4 each wheel cylinder of calculating, target braking force to realize process identical with the above-mentioned course of work.
Described thrashing, potentially includes the simulator control valve 117 braking in output unit, pedal travel simulator
116th, PTS 110, the motor 201 in hydraulic control unit, hydraulic pump 202, high pressure accumulator 203, magnetic valve
206th, 208,209,305,307,309,311, pressure sensor 207,210,306,308,310,312 lost efficacy.Under failure mode,
Motor 201 and the equal power-off of magnetic valve 117,206,208,209,305,307,309,311.Driver steps on pedal, is pushed away by master cylinder
Bar 108 promotes first piston 102, second piston 103 and the first spring 105, second spring 107, and brake fluid is lived by master cylinder second
Plug inner chamber 106 passes through fail safe magnetic valve 208 and pressure-regulating valve 305,307,309,311 respectively enters four brakes
301st, 302,303,304, the brake force needed for vehicle is provided.
The present invention is only illustrated with above-described embodiment, and the structure of each part, set location and its connection are all to have
Changed, on the basis of technical solution of the present invention, all improvement individual part being carried out according to the principle of the invention and equivalent
Conversion, all should not exclude outside protection scope of the present invention.
Claims (3)
1. a kind of Automobile Electro-hydraulic Brake System of achievable Time-sharing control, it includes a braking output unit, a hydraulic pressure control
Unit processed, a brake execution unit and an electronic control unit；
Described braking output unit includes a master cylinder housing, and in described master cylinder housing, interval setting first piston and second is lived
Plug, forms first piston inner chamber between described first piston and described second piston, is provided with described first piston inner chamber
The first spring that one two ends are connected with described first piston, second piston respectively；Described second piston and described master cylinder housing it
Between formed second piston inner chamber, be provided with described second piston inner chamber two ends respectively with described second piston, described master
The second spring that cylinder housing inwall connects；The outside of described first piston connects one end of a master cylinder push rod, described master cylinder push rod
The other end connect a brake pedal, a PTS is provided with described brake pedal；Positioned at described first
It is respectively arranged with an oil-in and an oil-out, described in two on the described master cylinder housing of piston cavity and second piston inner chamber periphery
Oil-in is connected with a liquid storing cup, and wherein described in one, oil-out passes through a brake piping connection one pedal travel simulator；
Described hydraulic control unit includes a motor, and the output end of described motor connects a hydraulic pump, one end of described hydraulic pump
Described liquid storing cup is connected by brake piping, the other end connects a high pressure accumulator by brake piping, positioned at described high pressure
One check valve is provided with the brake piping between accumulator and described hydraulic pump；The other end of described high pressure accumulator passes through system
Dynamic pipeline connects a braking transmission main line, described braking transmit main line pass through respectively another on brake piping and described master cylinder housing
Described in one, oil-out, described liquid storing cup connect；Transmitting the braking between main line positioned at described high pressure accumulator and described braking
One pressure charging valve is provided with pipeline, the brake piping between described high pressure accumulator and described pressure charging valve is provided with one
Energy storage pressure sensor；The brake piping transmitting between main line positioned at described oil-out and described braking is provided with a mistake
Effect protection valve；The brake piping transmitting between main line positioned at described liquid storing cup and described braking is provided with a pressure-reducing valve；
Described brake execution unit includes a left front brake, a right front brake, a left back brake and a right rear brake；
Described left front brake, right front brake, left back brake and right rear brake pass through a brake piping and described braking respectively
Transmission main line connects；The brake piping transmitting between main line positioned at described left front brake and described braking is provided with one left
Front pressure-regulating valve, is provided with one right on the brake piping transmitting between main line positioned at described right front brake and described braking
Front pressure-regulating valve, is provided with one left on the brake piping transmitting between main line positioned at described left back brake and described braking
Pressure-regulating valve afterwards, is provided with one right on the brake piping transmitting between main line positioned at described right rear brake and described braking
Pressure-regulating valve afterwards；
It is characterized in that:
Brake piping between described oil-out and described pedal travel simulator is provided with a simulator control valve；
Described braking transmission main line is provided with a main line pressure sensor；
One left front pressure is being provided with the brake piping between described left front pressure-regulating valve and described left front brake
Sensor, presses before being provided with a right side on the brake piping between pressure-regulating valve and described right front brake before the described right side
Force snesor, is provided with one left back on the brake piping between described left back pressure-regulating valve and described left back brake
Pressure sensor, is provided with one right on the brake piping between pressure-regulating valve and described right rear brake behind the described right side
Pressure sensor afterwards；
Described electronic control unit is electrically connected described motor, PTS, energy storage pressure sensor, main line pressure
Force snesor, left front pressure sensor, the right side before pressure sensor, left back pressure sensor, the right side after pressure sensor, simulator control
Valve processed, pressure charging valve, fail safe valve, pressure-reducing valve, left front pressure-regulating valve, the right side before pressure-regulating valve, left back pressure-regulating valve and
Pressure-regulating valve behind the right side.
2. as claimed in claim 1 a kind of Automobile Electro-hydraulic Brake System of achievable Time-sharing control it is characterised in that institute
State pedal travel simulator and include a simulator housing, be provided with an emulator piston, described mould in described simulator housing
Intend being provided with a simulator spring, the opposite side institute of described emulator piston between the side of device piston and described simulator housing
To described simulator housing be connected with brake piping.
3. a kind of Automobile Electro-hydraulic Brake System of achievable Time-sharing control as claimed in claim 1 or 2, its feature exists
Pressure-regulating valve, a left side before, described simulator control valve, pressure charging valve, fail safe valve, pressure-reducing valve, left front pressure-regulating valve, the right side
Behind pressure-regulating valve and the right side, pressure-regulating valve is two-position two-way solenoid valve afterwards, and described simulator control valve, pressure-reducing valve and increasing
Pressure valve is normally close valve, described fail safe valve, left front pressure-regulating valve, pressure-regulating valve, left back pressure-regulating valve and the right side before the right side
Pressure-regulating valve is normally open valve afterwards.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410409485.XA CN104149765B (en) | 2014-08-19 | 2014-08-19 | Car electronic and hydraulic brake system capable of realizing time-sharing control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410409485.XA CN104149765B (en) | 2014-08-19 | 2014-08-19 | Car electronic and hydraulic brake system capable of realizing time-sharing control |
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| CN104149765A CN104149765A (en) | 2014-11-19 |
| CN104149765B true CN104149765B (en) | 2017-01-25 |
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| DE102015203737B4 (en) * | 2015-03-03 | 2019-05-02 | Ford Global Technologies, Llc | Brake system and method for operating a brake system |
| CN106427964A (en) * | 2016-02-05 | 2017-02-22 | 芜湖伯特利汽车安全***股份有限公司 | Control-by-wire hydraulic braking system and control method thereof |
| CN106218624B (en) * | 2016-09-26 | 2018-11-13 | 安徽工程大学 | A kind of vehicle electric brake fluid system and its control method |
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