CN105292089B - Vehicular brake device - Google Patents
Vehicular brake device Download PDFInfo
- Publication number
- CN105292089B CN105292089B CN201510740119.7A CN201510740119A CN105292089B CN 105292089 B CN105292089 B CN 105292089B CN 201510740119 A CN201510740119 A CN 201510740119A CN 105292089 B CN105292089 B CN 105292089B
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- Prior art keywords
- piston
- cylinder
- chamber
- storage device
- liquor storage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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
- B60T11/224—Master control, e.g. master cylinders with pressure-varying means, e.g. with two stage operation provided by use of different piston diameters including continuous variation from one diameter to another
-
- 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
- B60T11/28—Valves specially adapted therefor
-
- 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
- B60T11/28—Valves specially adapted therefor
- B60T11/34—Pressure reducing or limiting valves
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The present invention relates to the Vehicular brake device of the Vehicular brake device of regulation wheel braking force, particularly change brake fluid pressure.The device includes liquor storage device, wheel brake cylinder, the Stress control cylinder for being internally provided with piston, and Stress control cylinder is separated into the first chamber and the second chamber by the piston;Act on the drive device of the piston;One control device, it can be controlled to the electric energy for being conveyed to the drive device;Its design feature is that first chamber and the second chamber each have inlet and liquid outlet, and both are with being provided with the check valve for ensureing that working fluid flows from liquor storage device to wheel brake cylinder direction in the stream of wheel brake cylinder and liquor storage device;Decompressor is additionally provided between liquor storage device and wheel brake cylinder.The present invention improves the response speed of brake apparatus when vehicle is continuously braked, and extends the service life of motor, reduces power consumption, significantly improves emergency brake braking effect.
Description
Technical field
The present invention relates to the Vehicular brake device of regulation wheel braking force, particularly a kind of car for changing brake fluid pressure
Brake apparatus.
Background technology
Japan Patent JP-A-9-511967 discloses a kind of brakes, and it includes (a) wheel brake cylinder, its cloth
It is set under being acted in hydraulic pressure and produces braking;(b) master cylinder, it includes a pressurizing piston, and it is according to a people
The work of work braking maneuver element and act, working fluid is pressed into one forms compression chamber in front of pressurizing piston
In;(c) high-voltage power supply, its form are a Stress control cylinder, and it includes a control piston, and it is according to the work of a motor
Make and act, and there is a control pressure room, it is formed in the front of control piston, the control pressure room and wheel brake cylinder
Communicate;And (d) brake pressure control apparatus, it is used to control the electric current for being transported to motor, with control pressure master cylinder
Control pressure room in Fluid pressure, and thus control the Fluid pressure in wheel brake cylinder.Pressure control in prior art
Piston in cylinder processed just has working chamber (" control pressure room " in documents) only when being promoted to same direction,
When piston is advanced to Stress control cylinder bottom portion or unclamps artificial braking maneuver element, it is necessary to which invert motor retracts original by piston
To restart work, piston does not have working chamber during retracting, and the upstream of wheel brake cylinder is provided with pressure for position
Maintaining body, to ensure continuing for brake force.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of Vehicular brake device, and it is to disclosed by document disclosed above
Existing brakes be improved, improve the response speed of brake apparatus when vehicle is continuously braked and motor uses the longevity
Life, reduces the consumption of electric energy, significantly improves the braking effect of emergency brake.
Technical scheme is the Vehicular brake device used by the present invention solves above-mentioned technical problem, including:
One liquor storage device, working fluid is housed in the liquor storage device;
The wheel brake cylinder of one hydraulic action, for acting on brake component;
Stress control cylinder is separated into the first chamber and second by one Stress control cylinder for being internally provided with piston, the piston
Chamber;
One drive device for acting on the piston;
One control device, it can be controlled to the electric energy for being conveyed to the drive device, so as to control the wheel
The pressure of working fluid in checking cylinder;
Its design feature is that first chamber and the second chamber each have an inlet and a liquid outlet, described
Inlet communicates with liquor storage device, and the liquid outlet communicates with wheel brake cylinder, in the stream of inlet and liquor storage device,
And it is provided with liquid outlet and the stream of wheel brake cylinder and ensures working fluid from liquor storage device to wheel brake cylinder direction
The check valve of flowing;Decompressor is additionally provided between liquor storage device and wheel brake cylinder.First, when piston pushes away to the first chamber
When entering, the first chamber is working chamber, and working fluid flows into wheel brake cylinder the action for going to control brake component from the first chamber, while
Second intracavitary produces negative pressure, and working fluid enters the second chamber fluid infusion from liquor storage device, and check valve makes working fluid will not be from car
The second chamber is flowed into wheel checking cylinder;Vice versa, and a job can be formed in front of its motion when the advance of piston and rollback
Chamber, take full advantage of piston retracts action, saves the switching frequency that electric energy also reduces direction of motor rotation, greatly improves
The service life of motor;Secondly as need not frequently change direction of motor rotation, it is notable when continuously being braked
Response speed is improved, improves the braking effect of emergency brake;Finally, decompressor is between wheel brake cylinder and liquor storage device
Form closed loop so that the braking maneuver of above-mentioned " single cylinder dual output " can continue to carry out.
Preferably, be provided with the first two way seal mechanism in the piston circumference, the first two way seal mechanism by
At least one sealing ring or the obturating cup composition being oppositely arranged for a pair, two way seal are designed to prevent the first chamber and the second chamber
The mutual flowing of middle working fluid, so as to ensure braking effect.
Preferably, the drive device is motor, the output shaft of motor is connected with the piston by thread transmission
Connect, screw-driven locating effect is obvious, is advantageous to the control to working fluid pressure.
Preferably, the thread transmission it is two-way lead angle it is small in equivalent friction angle, so as to form one
Bidirectional self-locking structure, ensure that motor does not need work, saves electric energy and ensure that work in the pressure holding of Stress control cylinder
To the equivalence of working fluid in wheel brake cylinder during plug way moving.
Preferably, also include a position-limit mechanism in the Stress control cylinder, for limiting the circumferential movement of piston, institute
State position-limit mechanism and the piston is axially in parallel, position-limit mechanism ensure that piston will not do circumferential fortune during screw-driven
It is dynamic, further increase the control efficiency of Stress control cylinder.
Preferably, the position-limit mechanism is gag lever post, piston is set on gag lever post, and the both ends of gag lever post are fixed on pressure
The both ends of power master cylinder, gag lever post is simple in construction, is easy to set sealing mechanism thereon.
Preferably, the socket place of the piston and gag lever post is provided with the second two way seal mechanism, described second is two-way
Sealing mechanism is made up of at least one sealing ring, and the second two way seal mechanism can prevent working fluid in the first chamber and the second chamber
Mutually flowed from the seam crossing of piston and gag lever post, so as to ensure braking effect.
The present invention compared with the existing technology has advantages below and effect:1st, due to the stream in inlet and liquor storage device
In and liquid outlet and the stream of wheel brake cylinder in be provided with ensure working fluid from liquor storage device to wheel brake cylinder side
To the check valve of flowing so that piston all has a working chamber in the process for promoting and retracting, and reaches " single cylinder dual output "
Effect.The action that retracts that single cylinder dual output takes full advantage of piston saves electric energy, reduces motor compared with prior art
The switching frequency of rotation direction, the service life of motor can be greatly improved;Simultaneously as it need not frequently change motor rotation
Direction, when continuously being braked, response speed can be greatly improved, significantly improves the braking effect of emergency brake;2nd, by
In the small effect in equivalent friction angle with bidirectional self-locking of the two-way lead angle of thread transmission, in Stress control cylinder
Do not need external agency to apply extra pressure when pressure is kept, reduce pressure holding, save electric energy, while have yet
Beneficial to continuous braking;3rd, because there is provided position-limit mechanism, it is therefore prevented that the circumferential movement of piston during screw-driven, so as to enter
One step reduces the loss of electric energy.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation of brake system hydraulic control unit where the present invention.
Fig. 2 is the overall structure diagram of the present invention.
Fig. 3 is the sectional view of Stress control cylinder of the present invention.
Fig. 4 is the screw drive structure schematic diagram of the present invention.
Fig. 5 is operating diagram when inventive piston promotes.
Operating diagram when Fig. 6 retracts for inventive piston.
Label declaration:Liquor storage device 10, brake pedal 11, Stress control cylinder 20, cylinder body 21, the first chamber 211, the second chamber
212, piston 22, endoporus 220, the first two way seal mechanism 221, the second two way seal mechanism 222, screw mandrel 23, round platform 231, limit
Position bar 24, motor 25, check valve 31-34, inlet 41,43, liquid outlet 42,44, wheel brake cylinder 50, pressure-reducing valve 60.
Embodiment
With reference to embodiment, the present invention is described in further detail, following examples be explanation of the invention and
The invention is not limited in following examples.
Embodiment 1:As shown in Figures 1 to 6, the present embodiment is by liquor storage device 10, brake pedal 11, Stress control cylinder 20, cylinder
Body 21, the first chamber 211, the second chamber 212, piston 22, endoporus 220, the first two way seal mechanism 221, the second two way seal mechanism
222, screw mandrel 23, round platform 231, gag lever post 24, motor 25, check valve 31-34, inlet 41,43, liquid outlet 42,44, wheel system
Dynamic cylinder 50, pressure-reducing valve 60 form.Liquor storage device 10 and the artificial brake operating element such as annexation of brake pedal 11 with it is existing
Technology is identical, and wheel brake cylinder 50 is communicated by Stress control cylinder 20, pressure-reducing valve 60 with liquor storage device 10 respectively, liquor storage device 10
In working fluid is housed, the flow direction of working fluid enters car to be flowed out from liquor storage device 10, by Stress control dress cylinder 20
Take turns checking cylinder 50, then by wheel brake cylinder 50 via decompression regulating device be that pressure-reducing valve 60 flows back to liquor storage device 10.
Stress control cylinder 20 includes cylinder body 21 and a piston 22, and piston 22 is liquid-tight by the first bilateral sealing device 221
Ground is simultaneously slidably received within cylinder body 21.Cylinder body 21 is divided into the first chamber 211 and the second chamber 212 by piston 22, and first is two-way
Sealing device 221 maintains the first chamber 211 and the second chamber 212 is separate.First bilateral sealing device 221 can be O-ring
Or a pair of opposite leather cups, although can be mounted on cylinder body 21 in the groove made, can also be installed on piston 22
In the groove made.
Inlet 41 and liquid outlet 42 are provided with first chamber 211, inlet 43 and liquid outlet are provided with the second chamber 212
44.Inlet 41,43 communicates with liquor storage device 10, and liquid outlet 42,44 communicates with wheel brake cylinder 50.Inlet 41,43 with
In the stream of liquor storage device, and liquid outlet 42,44 in the stream of wheel brake cylinder 50 with being each provided with a check valve 31-
34 so that working fluid can only flow to wheel brake cylinder 50 from liquor storage device 10, and be unable to reverse flow.Piston 22 passes through screw thread
Transmission mechanism such as screw mandrel 23 are axially moved under the driving of motor 25, and motor can forward and reverse direction rotation.Set on screw mandrel 23 limited
The round platform 231 that throwing bar 23 is axially moved, round platform 231 push up the outside for being located at motor 25.Further, screw mandrel 23 can be motor
25 output shaft, further, the advance of piston 22 and retract that to depend on motor 25 be to rotate forward or rotating backward.
The course of work of the Vehicular brake device is explained below.When Vehicular brake device is in normal condition, in car
The control for taking turns working fluid pressure (being hereafter referred to as " brake pressure ") in checking cylinder 50 is by being controlled, entering to motor 25
And control pressure master cylinder 20 is realized.
With pushing for brake pedal 11, triggering motor 25 drives screw mandrel 23 to rotate.When motor 25 rotates forward, screw mandrel 23
Piston 22 is promoted to be moved to the first chamber 211, now the first chamber 211 is working chamber, and intracavitary is full of working fluid.With working fluid
Pressure rise, check valve 32 are opened, and working fluid is pumped into checking cylinder 50 from Stress control cylinder 20, and front wheel brake cylinder is with after
Taking turns checking cylinder is promoted with identical Fluid pressure;At the same time, the second chamber 212 is fluid-infusing chamber, with piston 22 to first
Chamber 211 is moved, and negative pressure is produced in the second chamber 212, and check valve 33 is opened, and working fluid is flowed into second from liquor storage device 10
In chamber 212.When piston 22 is advanced to the bottom of the first chamber 211, motor control assembly controlled motor 25 rotates backward, and now
One chamber 211 is fluid-infusing chamber, and the second chamber 212 is working chamber, and check valve 34 is opened, and working fluid flows out from the second chamber 212, simultaneously
Check valve 31 is opened, and working fluid is flowed into from liquor storage device 10 in first chamber 211.Working fluid is from Stress control cylinder 20
After outflow, as known in the art, working fluid is flowed into wheel brake cylinder 50, the braking pressure in wheel brake cylinder 50
Power increases so that brake component acts on front and back wheel, completes brake.Piston 22 runs to the second chamber from the bottom of the first chamber 211
The working fluid discharged during 212 bottom carries out 10-15 braking enough, and motor 25 need not rotate backward progress during this period
Reset, so as to save electric energy, the response speed of Stress control dress cylinder 20 when repeatedly continuous braking also greatly improved.
Between the downstream position of wheel brake cylinder 50 and liquor storage device 10, a pressure-reducing valve 60 is provided with, when release is made
During dynamic pedal 11, if wheel brake cylinder 50 is in on-position, working fluid just passes through pressure-reducing valve 60 from wheel brake cylinder 50
It is back in liquor storage device 10, so as to discharge brake component.
Embodiment 2:In embodiment 1, because working chamber is in high pressure conditions, there is opposition to piston 22, when
, can be by being continuously applied certain driving torque to motor 25 to prevent the retraction of piston 25 when system is in pressure holding pattern
Motion.But such arrangement will disadvantageously result in the increase of power consumption.
For disadvantages mentioned above, the present embodiment is arranged to:Thread transmission be the two-way lead angle of screw mandrel 23 it is small in
Equivalent friction angle, so as to form a bidirectional self-locking structure.When discharging brake pedal 11, motor 25 stops operating, due to spiral shell
Line lift angle is small self to be locked on screw mandrel 23 in equivalent friction angle, piston 22, maintains the Fluid pressure in working chamber, so as to
Save electric energy.
Embodiment 3:Because the drive connection between the output shaft and piston 22 of motor 25 is to be passed by the screw thread on screw mandrel 23
Dynamic, when screw mandrel 23 rotate, presence can cause the force of sliding friction of the generation circumferential movement of piston 22 between screw thread, and this circumference
Motion is unnecessary, and existing arrangement will cause the increase for causing power consumption, be will also result under 22 liquid-tight effect of piston
Drop.
For disadvantages mentioned above, the present embodiment is arranged to:One position-limit mechanism is set, for example opens up an endoporus on the piston 22
220, a gag lever post 24 is accommodated through endoporus 220, gag lever post 24 is axially parallel fixed on the two of cylinder body 21 with piston 22
Between the end cap of end.Gag lever post 24 in liquid-tight manner and is slidably fitted within endoporus 220 by the second sealing device 222, and second is close
Seal apparatus 222 can be O-ring or rubber cup.In addition, position-limit mechanism can also be the groove made on cylinder body 21 and work
Made on the groove and middle cylinder body 21 made in the projection or piston 22 with groove fluid-tight engagement made on plug 22
With the projection of groove fluid-tight engagement (diagram does not show).
When piston 22 moves in cylinder body 21, position-limit mechanism ensure that piston 22 is not sent out during promoting and retracting
Raw circumferential movement, further saves the consumption of electric energy.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, it is named
Title etc. can be different.The equivalent or simple change that all construction, feature and principles according to described in inventional idea of the present invention are done, is wrapped
Include in the protection domain of patent of the present invention.Those skilled in the art can be to described specific implementation
Example is made various modifications or supplement or substituted using similar mode, structure without departing from the present invention or surmounts this
Scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (4)
1. Vehicular brake device, including:
One liquor storage device, working fluid is housed in the liquor storage device;
The wheel brake cylinder of one hydraulic action, for acting on brake component;
Stress control cylinder is separated into the first chamber and the second chamber by one Stress control cylinder for being internally provided with piston, the piston;
One drive device for acting on the piston;
One control device, it can be controlled to the electric energy for being conveyed to the drive device, so as to control the wheel braking
The pressure of working fluid in cylinder;
Characterized in that, first chamber and the second chamber each have an inlet and a liquid outlet, the inlet equal
Communicated with liquor storage device, the liquid outlet communicates with wheel brake cylinder, in the stream of inlet and liquor storage device and goes out liquid
Mouth is with being provided with the list for ensureing that working fluid flows from liquor storage device to wheel brake cylinder direction in the stream of wheel brake cylinder
To valve;
Decompressor is additionally provided between liquor storage device and wheel brake cylinder;
The first two way seal mechanism is provided with the piston circumference, the first two way seal mechanism is by least one sealing ring
Or a pair of obturating cup compositions being oppositely arranged;
The drive device is motor, and the output shaft of motor is connected with the piston by thread transmission;The screw thread passes
The two-way lead angle of motivation structure is respectively less than equivalent friction angle.
2. Vehicular brake device according to claim 1, it is characterised in that:Also include a limit in the Stress control cylinder
Position mechanism, for limiting the circumferential movement of piston, the position-limit mechanism and the piston are axially in parallel.
3. Vehicular brake device according to claim 2, it is characterised in that:The position-limit mechanism is gag lever post, piston bush
It is located on gag lever post, the both ends of gag lever post are fixed on the both ends of Stress control cylinder.
4. Vehicular brake device according to claim 3, it is characterised in that:The socket place of the piston and gag lever post is set
There is the second two way seal mechanism, the second two way seal mechanism is made up of at least one sealing ring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510740119.7A CN105292089B (en) | 2015-11-04 | 2015-11-04 | Vehicular brake device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510740119.7A CN105292089B (en) | 2015-11-04 | 2015-11-04 | Vehicular brake device |
Publications (2)
Publication Number | Publication Date |
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CN105292089A CN105292089A (en) | 2016-02-03 |
CN105292089B true CN105292089B (en) | 2018-02-13 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201510740119.7A Active CN105292089B (en) | 2015-11-04 | 2015-11-04 | Vehicular brake device |
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CN (1) | CN105292089B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106904160A (en) * | 2017-04-12 | 2017-06-30 | 潘泓冰 | A kind of vehicle brake fluid pressure power assisting device and its boosting method |
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CN103552557A (en) * | 2013-11-18 | 2014-02-05 | 扬州泰博汽车电子智能科技有限公司 | Electro-hydraulic composite braking system with electric braking assistant force and brake-by-wire function |
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CN104648368A (en) * | 2013-11-21 | 2015-05-27 | 现代摩比斯株式会社 | Electronic hydraulic brake system |
CN104709263A (en) * | 2015-03-27 | 2015-06-17 | 吉林大学 | Braking system with combined function of drive-by-wire and power-assisting and with manpower-magnification action |
CN104943672A (en) * | 2015-06-16 | 2015-09-30 | 吉林大学 | Hydraulic brake system and method with double hydraulic cylinder four-wheel failure backup |
CN205149836U (en) * | 2015-11-04 | 2016-04-13 | 浙江万向精工有限公司 | Vehicle braking device |
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2015
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CN102781740A (en) * | 2010-02-26 | 2012-11-14 | 本田技研工业株式会社 | Vehicle brake device and vehicle brake device control method |
CN102556031A (en) * | 2010-11-08 | 2012-07-11 | 本田技研工业株式会社 | Vehicle braking apparatus |
CN103492242A (en) * | 2011-03-02 | 2014-01-01 | 罗伯特·博世有限公司 | Brake system and method for controlling a brake system |
CN103303281A (en) * | 2012-03-14 | 2013-09-18 | 浙江万向精工有限公司 | Integrated brake-by-wire system |
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CN104648368A (en) * | 2013-11-21 | 2015-05-27 | 现代摩比斯株式会社 | Electronic hydraulic brake system |
CN104709263A (en) * | 2015-03-27 | 2015-06-17 | 吉林大学 | Braking system with combined function of drive-by-wire and power-assisting and with manpower-magnification action |
CN104943672A (en) * | 2015-06-16 | 2015-09-30 | 吉林大学 | Hydraulic brake system and method with double hydraulic cylinder four-wheel failure backup |
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