CN100503328C - Hydro-electric braking system - Google Patents
Hydro-electric braking system Download PDFInfo
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- CN100503328C CN100503328C CNB2006100354730A CN200610035473A CN100503328C CN 100503328 C CN100503328 C CN 100503328C CN B2006100354730 A CNB2006100354730 A CN B2006100354730A CN 200610035473 A CN200610035473 A CN 200610035473A CN 100503328 C CN100503328 C CN 100503328C
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Abstract
The invention relates to an electrohydraulic braking system. It contains a braking pedal and a first braking main cylinder linking with the pedal. It is characterized in that: it also contains a motor, a push rod, the second braking main cylinder and a BCU control unit. The motor connects with the second braking main cylinder by the push rod. The BCU control unit uses braking information from the braking pedal to control the motor. The invention drives the main piston moving by using the linear motor drive. It saves the traditional vacuum aided electrohydraulic braking system, cancel the vacuum booster and change the double braking cylinders to single cylinder to avoid the limit of servo vacuum. It can be used on modern pure electric vehicles. With small manpower, it alleviates manpower fatigue and improves drivers' safety.
Description
[technical field]
The present invention relates to a kind of automobile electrical hydraulic brake system.
[background technology]
Extensively adopt vacuum booster as brake servo unit on the automobile, mainly utilize the degree of vacuum at driving engine trunnion place to help the pilot control brake pedal, promote the braking of brake fluid pressure master cylinder by manpower, utilize the engine charge of traditional fuel vehicle, it is moving that vacuum is waitd upon system of mourning.Because bulky vacuum booster is arranged, the layout of complete vehicle structure is subject to many limitations, and does not wait upon the clothes vacuum in the pure electric automobile, and the required chaufeur people of glancing impact force intensity is higher, and is tired easily.
[summary of the invention]
Purpose of the present invention is exactly in order to solve the braking problem of the pure electric automobile of not waiing upon the clothes vacuum, a kind of actv. pure electric automobile electro-hydraulic brake system to be provided.
For achieving the above object, the present invention proposes a kind of electro-hydraulic brake system, comprise brake pedal, first master brake cylinder that links to each other with brake pedal, motor, push rod, second master brake cylinder, ECU control unit, described motor links to each other with second master brake cylinder by push rod, the ECU control unit receives the speed-slackening signal of brake pedal, the control motor action, also comprise the braking simulator (4) that links to each other with first master brake cylinder and be contained in hydraulic pressure sensor (5) on the simulator (4), this hydraulic pressure sensor (5) links to each other with ECU control unit (10).
Also comprise link to each other with brake pedal, be braked the contact switch that pedal withstands, this contact switch links to each other with the ECU control unit.
Be provided with position transduser at motor-driven push rod, this position transduser links to each other with the ECU control unit.
Described motor is linear electric motors.
Described first master brake cylinder is the single cylinder master brake cylinder, and described second master brake cylinder is traditional twin-tub master brake cylinder.
Hydraulic pressure in the described braking simulator increases with the stroke of brake pedal.
Be provided with first normally closed solenoid valve, first normally open solenoid valve, second normally closed solenoid valve, second normally open solenoid valve and the 3rd normally closed solenoid valve in the described electro-hydraulic brake system, wherein first normally closed solenoid valve is arranged between first master brake cylinder and the braking simulator, first normally open solenoid valve is arranged between first master brake cylinder and the wheel cylinder, second normally closed solenoid valve and the 3rd normally closed solenoid valve are arranged on two brake circuits, and second normally open solenoid valve is arranged between two brake circuits.
The present invention is under the situation of system's normal operation, assign to trigger the braking operating part by the braking simulation part, and simulating brake sensation, make chaufeur that a perception to car brakeing be arranged on sense organ, if when electronic section lost efficacy, can guarantee that vehicle still carries out braking, guarantee the vehicle driving safety.The braking operating part is used for just often carrying out service brake exactly.The ECU control part with electronics package transmitting-receiving instruction, when electronic system breaks down, cuts off power supply to whole braking, guarantees vehicle safety.
The present invention has kept the hydraulic braking part in the traditional vacuum power-assisted, the cancellation vacuum booster, use automatically controlled servo-unit instead, solved the braking problem of the pure electric automobile of not waiing upon the clothes vacuum, alleviate chaufeur people force intensity, and when electronic system lost efficacy, the traditional braking system of reservation still can guarantee temporary transient service brake needs.
First master brake cylinder is the single cylinder master brake cylinder among the present invention, because the brake safe when first master brake cylinder mainly is drive simulating person's brake feel and the inefficacy of assurance braking operating part, the required hydraulic pressure that provides is less relatively, the master cylinder volume requirements is also less, change single cylinder into and can reduce the master cylinder spatial volume and be convenient to arrange, also help reducing manufacturing cost.
The braking simulator that the present invention increases can be felt by simulating brake; Described electro-hydraulic brake system also comprise a plurality ofly often open, normally closed solenoid valve, the safety in the time of can increasing braking automobile; Advantages such as motor of the present invention is linear electric motors, and linear electric motors have response fast, and volume is little; In addition, the application of electronic system also helps the integrated design of car load.
[description of drawings]
Fig. 1 is a pure electric automobile electro-hydraulic brake system scheme drawing of the present invention.
Wherein: contact switch 1, brake pedal 2, first master brake cylinder 3, braking simulator 4, hydraulic pressure sensor 5, first normally closed solenoid valve 6, first normally open solenoid valve 7, second normally closed solenoid valve 8, second normally open solenoid valve 9, ECU control unit 10, the 3rd normally closed solenoid valve 11, linear electric motors 12, position transduser 13, second master brake cylinder 14 and push rod 15.
[specific embodiment]
In conjunction with the accompanying drawings the present invention is done detailed description below by specific embodiment:
A kind of pure electric automobile electro-hydraulic brake system comprises three parts, i.e. braking simulation part, braking operating part and ECU control part.As shown in Figure 1:
Braking simulation part branch comprises open contact switch 1, brake pedal 2, first master brake cylinder 3, braking simulator 4, hydraulic pressure sensor 5 and normally closed solenoid valve 6.Brake pedal 2 withstands electric shock switch 1, and is connected with first master brake cylinder 3, hydraulic pressure sensor 5, the first normally closed solenoid valves 6 is housed on the braking simulator 4 is arranged between first master brake cylinder 3 and the braking simulator 4.
The braking operating part comprises first normally open solenoid valve 7, second normally closed solenoid valve 8, second normally open solenoid valve 9, the 3rd normally closed solenoid valve 11, linear electric motors 12, position transduser 13, second master brake cylinder 14 and push rod 15.Wherein, first normally open solenoid valve 7 is arranged between braking simulation part and the braking operating part, second normally closed solenoid valve 8 and the 3rd normally closed solenoid valve 11 are separately positioned on two brake circuits, second normally open solenoid valve 9 is arranged between two brake circuits, linear electric motors 12 are connected with second master brake cylinder 14 by push rod 15, and position transduser 13 is installed on the push rod 15.
Principle of work of the present invention is:
After ECU control unit 10 starts the braking operating part, close second normally open solenoid valve 9 that is arranged between two brake circuits immediately, and open second normally closed solenoid valve 8 and the 3rd normally closed solenoid valve 11 that is separately positioned on two brake circuits, start linear electric motors 12 simultaneously and promote 14 work of second master brake cylinder, reach the purpose of braking.
The push rod 15 of linear motor driving is provided with position transduser 13, position transduser detects the position of push rod 15 in real time, and send position signal to ECU control unit 10, ECU control unit 10 compares this position signal and the aforementioned position signal that calculates gained according to braking simulation part, control the action of motor 12 in real time, promptly control the position of push rod 15, thereby real-time provide a corresponding brake-pressure, reach the purpose of braking pressure control to wheel cylinder.
Include two normally open solenoid valves and three normally closed solenoid valves among the present invention.Normally open solenoid valve, when promptly system did not work, this valve kept opening state; Normally closed solenoid valve, when promptly system did not work, this valve was kept closed.First normally open solenoid valve 7 is arranged between braking simulation part and the braking operating part, and its effect cuts off the pressure oil of first master brake cylinder 3 when being system's normal operation, by the pressure oil braking of second master brake cylinder, 14 generations.When electronic system lost efficacy, the pressure oil of first master brake cylinder can enter wheel cylinder, carried out temporary transient braking function.The effect of second normally open solenoid valve 9 is similar to first normally open solenoid valve 7, during the system normal operation, its partition be two pressure oils between the branch brake piping; After the thrashing, the oil pressure of first master brake cylinder can enter respectively in two brake circuits.When being the electro-hydraulic brake system normal operation, the effect of first normally closed solenoid valve 6 opens, the pressure oil that first master brake cylinder 3 is produced enters in the braking simulator 4, the simulating brake sensation, cut off braking simulator oil circuit when electronic system lost efficacy, the pressure oil that first master brake cylinder 3 produces just flows to wheel cylinder.When being the work of braking operating part, the effect of second normally closed solenoid valve 8 and the 3rd normally closed solenoid valve 11 opens the cut-in pressure oil circuit, when electronic system lost efficacy, it is in closed condition, and the pressure oil that stops first master brake cylinder 3 to produce flows in second master brake cylinder, 14 oil cans, guarantees braking safety.
The present invention adopts the main firm piston motion of linear motor driving braking to reach the purpose of braking, kept traditional vacuum power-assisted hydraulic brake system, the cancellation vacuum booster, change the twin-tub master brake cylinder into single cylinder, reducing the master cylinder spatial volume is convenient to arrange, also help reducing manufacturing cost, during normal brake application, and shall not be applied to brake wheel; Increase by a braking simulator, the simulating brake sensation, its advantage is to have alleviated chaufeur people force intensity, and when electronic system lost efficacy, the traditional braking system of reservation still can guarantee temporary transient service brake needs; Described electro-hydraulic brake system also comprise a plurality ofly often open, normally closed solenoid valve, the safety in the time of can increasing braking automobile.In addition, the linear electric motors response is fast, and volume is little, and the application of electronic system also helps the integrated design of car load.
Claims (7)
1, a kind of electro-hydraulic brake system, comprise brake pedal (2), first master brake cylinder (3) that links to each other with brake pedal (2), motor (12), push rod (15), second master brake cylinder (14), ECU control unit (10), described motor (12) links to each other with second master brake cylinder (14) by push rod (15), ECU control unit (10) receives the speed-slackening signal of brake pedal (2), control motor (12) action, it is characterized in that: also comprise the braking simulator (4) that links to each other with first master brake cylinder and be contained in hydraulic pressure sensor (5) on the simulator (4), this hydraulic pressure sensor (5) links to each other with ECU control unit (10).
2, electro-hydraulic brake system as claimed in claim 1 is characterized in that: also comprise link to each other with brake pedal (2), be braked the contact switch (1) that pedal (2) withstands, this contact switch (1) links to each other with ECU control unit (10).
3, electro-hydraulic brake system as claimed in claim 1 or 2 is characterized in that: the push rod (15) that motor (12) drives is provided with position transduser (13), and this position transduser (13) links to each other with ECU control unit (10).
4, electro-hydraulic brake system as claimed in claim 1 is characterized in that: described motor is linear electric motors.
5, electro-hydraulic brake system as claimed in claim 1 is characterized in that: described first master brake cylinder (3) is the single cylinder master brake cylinder, and described second master brake cylinder (14) is traditional twin-tub master brake cylinder.
6, electro-hydraulic brake system as claimed in claim 1 is characterized in that: the hydraulic pressure in the described braking simulator (4) increases with the stroke of brake pedal (2).
7, electro-hydraulic brake system as claimed in claim 1, it is characterized in that: be provided with first normally closed solenoid valve (6) in the described electro-hydraulic brake system, first normally open solenoid valve (7), second normally closed solenoid valve (8), second normally open solenoid valve (9) and the 3rd normally closed solenoid valve (11), wherein first normally closed solenoid valve (6) is arranged between first master brake cylinder (3) and the braking simulator (4), first normally open solenoid valve (7) is arranged between first master brake cylinder (3) and the wheel cylinder, second normally closed solenoid valve (8) and the 3rd normally closed solenoid valve (11) are arranged on two brake circuits, and second normally open solenoid valve (9) is arranged between two brake circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100354730A CN100503328C (en) | 2006-05-10 | 2006-05-10 | Hydro-electric braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100354730A CN100503328C (en) | 2006-05-10 | 2006-05-10 | Hydro-electric braking system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101070066A CN101070066A (en) | 2007-11-14 |
| CN100503328C true CN100503328C (en) | 2009-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100354730A Active CN100503328C (en) | 2006-05-10 | 2006-05-10 | Hydro-electric braking system |
Country Status (1)
| Country | Link |
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| CN (1) | CN100503328C (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008044002A1 (en) * | 2008-11-24 | 2010-05-27 | Robert Bosch Gmbh | Brake system for a motor vehicle and motor vehicle |
| DE102010002406B4 (en) | 2010-02-26 | 2012-01-26 | Robert Bosch Gmbh | Hydraulic brake system and method and control unit for its operation |
| CN103209872B (en) * | 2010-11-17 | 2016-01-13 | 本田技研工业株式会社 | Vehicle brake system |
| EP2641798B1 (en) | 2010-11-17 | 2015-09-16 | Honda Motor Co., Ltd. | Vehicle-body attachment structure for electric brake actuator |
| CN102064750B (en) * | 2010-12-28 | 2013-04-03 | 电子科技大学 | Power-off brake protector of linear electric motor |
| CN102267450B (en) * | 2011-05-05 | 2015-07-15 | 浙江师范大学 | Electro-hydraulic control type braking power assisting device |
| CN103085799B (en) * | 2013-01-23 | 2015-01-14 | 南京艾斯福汽车科技有限公司 | Pneumatic intelligent electronic parking braking device |
| CN103950445A (en) * | 2014-04-14 | 2014-07-30 | 同济大学 | Hydraulic double-motor driving electronic hydraulic braking system |
| CN105946591B (en) * | 2014-12-01 | 2017-11-21 | 江苏理工学院 | Low-cost electric braking and hydraulic braking coordinated control system for electric automobile |
| CN105946592B (en) * | 2014-12-01 | 2017-11-21 | 江苏理工学院 | Electric braking and hydraulic braking coordination control method for electric automobile |
| CN108215807A (en) * | 2014-12-30 | 2018-06-29 | 充梦霞 | Electric vehicle and its method of work for braking electric energy recovering system |
| CN106143459A (en) * | 2016-08-08 | 2016-11-23 | 合肥泰好乐电子科技有限公司 | A kind of electric controlled brake system of autonomous driving vehicle |
| CN106184172A (en) * | 2016-08-08 | 2016-12-07 | 合肥天健汽车科技有限公司 | A kind of electric controlled brake system of autonomous driving vehicle |
| CN107499296A (en) * | 2017-07-25 | 2017-12-22 | 上海齐思汽车服务有限公司 | Electro-hydraulic brake system and Electro-hydraulic brake method |
| CN110027524B (en) * | 2018-01-12 | 2021-09-03 | 比亚迪股份有限公司 | Pedal feel simulator of vehicle and vehicle with same |
| CN109733355A (en) * | 2019-01-29 | 2019-05-10 | 江苏大学 | A kind of integrated type electrical brake fluid system and method |
| KR20210048324A (en) * | 2019-10-23 | 2021-05-03 | 주식회사 만도 | Electric brake system and control method thereof |
| CN114312705B (en) * | 2020-09-29 | 2023-03-24 | 比亚迪股份有限公司 | Braking system and vehicle |
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|---|---|---|---|---|
| US5531514A (en) * | 1994-05-26 | 1996-07-02 | Aisin Seiki Kabushiki Kaisha | Hydraulic brake system for vehicle |
| CN1419505A (en) * | 2001-01-02 | 2003-05-21 | 罗伯特博施有限公司 | Vehicle hydraulic braking systrem with at active simulator |
| CN1746061A (en) * | 2004-09-08 | 2006-03-15 | 罗伯特博世有限公司 | Braking device for a motor vehicle |
| EP0930208B1 (en) * | 1994-12-24 | 2007-02-21 | Continental Teves AG & Co. oHG | Hydraulic braking system for motor vehicles |
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2006
- 2006-05-10 CN CNB2006100354730A patent/CN100503328C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5531514A (en) * | 1994-05-26 | 1996-07-02 | Aisin Seiki Kabushiki Kaisha | Hydraulic brake system for vehicle |
| EP0930208B1 (en) * | 1994-12-24 | 2007-02-21 | Continental Teves AG & Co. oHG | Hydraulic braking system for motor vehicles |
| CN1419505A (en) * | 2001-01-02 | 2003-05-21 | 罗伯特博施有限公司 | Vehicle hydraulic braking systrem with at active simulator |
| CN1746061A (en) * | 2004-09-08 | 2006-03-15 | 罗伯特博世有限公司 | Braking device for a motor vehicle |
Also Published As
| Publication number | Publication date |
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| CN101070066A (en) | 2007-11-14 |
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