CN102826081B - Automobile brake system, method and automobile with brake system - Google Patents
Automobile brake system, method and automobile with brake system Download PDFInfo
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- CN102826081B CN102826081B CN201210336260.7A CN201210336260A CN102826081B CN 102826081 B CN102826081 B CN 102826081B CN 201210336260 A CN201210336260 A CN 201210336260A CN 102826081 B CN102826081 B CN 102826081B
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Abstract
The invention provides an automobile brake system, an automobile brake method and an automobile with the brake system. The automobile brake system comprises a brake pedal, a vacuum booster, a brake master cylinder, a vacuum pump, a brake information collection module and a control module, wherein the brake pedal is mechanically connected with the brake master cylinder; the vacuum booster is an auxiliary device arranged between the brake pedal and the brake master cylinder; the brake information collection module is used for collecting brake information on forces, displacement and speed when pushing the brake pedal down and sending the brake information to the control module; and the vacuum pump is connected to the vacuum booster, and the control module controls operation of the vacuum pump according to the information sent by the brake information collection module. Compared with the prior art, the automobile brake system, the automobile brake method and the automobile with the brake system can meet different brake requirements.
Description
Technical field
The present invention relates to a kind of vehicular spare parts technical field, particularly relate to a kind of brake system of car.
Background technology
Brake system of car plays an important role to the safety of automobile, is one of focus of automotive safety Journal of Sex Research.At present, the major part in brake system of car has brake pedal, vacuum booster, master brake cylinder, wheel cylinder and drg.The power process vacuum booster amplification that people produces by stepping on brake pedal, then act on master brake cylinder, this power form by hydraulic energy after master brake cylinder passes to wheel cylinder, and further amplify, last this part hydraulic energy acts on drg, drg moves to wheel with braking force, makes automobile brake.Wherein, vacuum booster plays very important effect, and existing vehicle often uses the degree of vacuum of engine intake manifold to make a side in vacuum booster produce degree of vacuum, makes its inner pressure reduction that produces, thereby obtains power-assisted.But this brake system in actual use, in the time of engine off, brake system efficiency is bad; Along with engine operating condition difference, degree of vacuum can change affects power-assisted; Under nominal situation, induction maniflod place degree of vacuum changes little, can not well adapt to various braking needs.
Summary of the invention
The invention provides a kind of brake system of car, can adapt to various braking needs.
The present invention also provides the method for the above-mentioned brake system of car of application.
The present invention also provides the automobile with above-mentioned brake system of car.
For reaching above-mentioned advantage, the invention provides a kind of brake system of car, comprise brake pedal, vacuum booster, master brake cylinder, vacuum pump, braking information collection module and control module; Described brake pedal and described master brake cylinder mechanical connection; Described vacuum booster is the auxiliary device between described brake pedal and described master brake cylinder; Described braking information is collected module collection and is stepped on power, displacement and the speed brake information of described brake pedal, and these braking information are sent to described control module; Described vacuum pump is connected with described vacuum booster, the information that described control module is collected module transmission according to described braking information judges braking situation, in the time stepping on power, displacement and the speed of described brake pedal and all exceed preset value, be judged as need to be larger braking force and response fast; In the time stepping on power, displacement and the speed of described brake pedal and all do not exceed preset value, be judged as and need normal brake application power and normal response speed; When power and the speed of stepping on brake pedal do not exceed preset value, and displacement is while exceeding preset value, be judged as need to be larger braking force and normal response speed; Described control module, according to vacuum pump work described in judged result control, makes the pressure reduction of vacuum booster inside and the speed of response need to change with different braking.
In one embodiment of the invention, described master brake cylinder comprises piston, and described brake system of car also comprises the push rod that connects described brake pedal and described piston; Described vacuum booster comprises push rod, and described push rod is connected with described piston rod.
In one embodiment of the invention, described brake system of car also comprises wheel cylinder and drg, and described wheel cylinder is connected by oil pipe with described master brake cylinder; When described brake pedal is stepped on, described push rod and described push rod promote described piston forward and move, and the fluid of described master brake cylinder is pressed into described wheel cylinder, and described wheel cylinder is by extremely described drg of the force transmission of fluid.
In one embodiment of the invention, described braking information collection module comprises displacement sensing device, speed sensor and power sensor.
The present invention also provides a kind of automobile brake method, and its step comprises:
Step on brake pedal, the force transmission of described brake pedal is to master brake cylinder;
Power, displacement and the speed brake information of brake pedal are stepped in the collection of brake application information module, and these braking information are sent to control module;
Described control module judges braking situation according to described braking information, in the time stepping on power, displacement and the speed of described brake pedal and all exceed preset value, be judged as need to be larger braking force and response fast; In the time stepping on power, displacement and the speed of described brake pedal and all do not exceed preset value, be judged as and need normal brake application power and normal response speed; When power and the speed of stepping on brake pedal do not exceed preset value, and displacement is while exceeding preset value, be judged as need to be larger braking force and normal response speed; Control module according to judged result control vacuum pump, make the pressure reduction of vacuum booster inside and the speed of response need to change with different braking;
The application force that described brake pedal is passed to described master brake cylinder by described vacuum booster amplifies.
In one embodiment of the invention, described control module is vehicle electronic control unit (Electronic Control Unit, ECU).
In one embodiment of the invention, described braking information collection module comprises displacement sensing device, speed sensor and power sensor.
The present invention also provides a kind of automobile, comprises vehicle electronic control unit (Electronic Control Unit, ECU) and above-mentioned brake system of car, and described control module is described vehicle electronic control unit.
Compare prior art, brake system of car of the present invention, method and there is the automobile of this brake system, increase braking information and collected module and vacuum pump, braking information is collected module collection and is stepped on power, displacement and the speed brake information of brake pedal and these braking information are sent to control module, control module according to the work of braking information control vacuum pump, make pressure reduction and the speed of response of vacuum booster inside need to change with different braking, thereby can meet different braking needs.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and coordinate appended graphicly, be described in detail below.
Brief description of the drawings
Fig. 1 is the schematic diagram of the brake system of car of preferred embodiment of the present invention.
Fig. 2 is the diagram of circuit of the automobile brake method of preferred embodiment of the present invention.
Detailed description of the invention
Please refer to Fig. 1, the brake system of car 100 of preferred embodiment of the present invention comprises brake pedal 10, vacuum booster 20, vacuum pump 30, master brake cylinder 40, wheel cylinder 50, drg 60, braking information collection module 70 and controls module 80.
Brake pedal 10 and master brake cylinder 40 mechanical connections.Master brake cylinder 40 comprises piston 42, and brake pedal 10 is connected with piston 42 by push rod 12.Master brake cylinder 40 is connected with wheel cylinder 50 by oil pipe 90.In the time that brake pedal 10 is stepped on, push rod 12 promotes piston 42 and moves forward, and the oil pressure of master brake cylinder 40 increases, and fluid enters wheel cylinder 50, wheel cylinder 50 again by force transmission to drg 60, thereby make drg 60 realize brake action.
Vacuum pump 30 is connected with vacuum booster 20, for vacuum booster 20 inside provide difference of pressure.
Vacuum booster 20 has a push rod (not shown), and the piston 42 of push rod and master brake cylinder 40 supports.Vacuum booster 20 helps out between brake pedal 10 and master brake cylinder 40.
Braking information is collected module 70 and is electrically connected with controlling module 80, the power, displacement and the speed brake information that are subject to for gathering brake pedal 10, and these braking information are passed to and control module 80.Braking information is collected module 70 can comprise power sensor, displacement pickup and speed sensor, steps on power, displacement and the speed of brake pedal 10 in order to sensing respectively.
Preferably, controlling module 80 is vehicle electronic control unit (Electronic Control Unit, ECU).Controlling module 80 collects by braking information the braking information that module 70 passes over braking situation is judged, in the time stepping on power, displacement and the speed of brake pedal 10 and all exceed preset value, be judged as braking force that need to be larger and respond fast, as emergency brake; In the time stepping on power, displacement and the speed of brake pedal 10 and all do not exceed preset value, be judged as and need normal brake application power and normal response speed, as common brake; When power and the speed of stepping on brake pedal 10 do not exceed preset value, and displacement is while exceeding preset value, be judged as need to be larger braking force and normal response speed, of short duration parking during as uphill/downhill.
Control module 80 and work according to judged result control vacuum pump 30, make the pressure reduction of vacuum booster 20 inside and the speed of response need to change with different braking.
Apply a method for above-mentioned brake system of car 100, its step comprises:
(1) step on brake pedal 10, the force transmission of brake pedal 10 is to master brake cylinder 40;
(2) brake application information module 70 gathers power, displacement and the speed brake information of stepping on brake pedal 10, and these braking information are sent to and control module 80;
(3) work of the information control vacuum pump 30 that control module 80 transmits according to braking information collection module 70, makes the pressure reduction of vacuum booster 20 inside and the speed of response need change with different braking;
(4) application force that brake pedal 10 is passed to master brake cylinder 40 by vacuum booster 20 amplifies.
In step (2), controlling module 80 collects by braking information the braking information that module 70 passes over braking situation is judged, in the time stepping on power, displacement and the speed of brake pedal 10 and all exceed preset value, be judged as need to be larger braking force and response fast; In the time stepping on power, displacement and the speed of described brake pedal 10 and all do not exceed preset value, be judged as and need normal brake application power and normal response speed; When power and the speed of stepping on brake pedal 10 do not exceed preset value, and displacement is while exceeding preset value, be judged as need to be larger braking force and normal response speed; Control module 80 according to judged result control vacuum pump 30, make the pressure reduction of vacuum booster 20 inside and the speed of response need to change with different braking.
Compare prior art, brake system of car of the present invention, method and there is the automobile of this brake system, increase braking information and collected module and vacuum pump, braking information is collected module collection and is stepped on power, displacement and the speed brake information of brake pedal and these braking information are sent to control module, control module according to the work of braking information control vacuum pump, make pressure reduction and the speed of response of vacuum booster inside need to change with different braking, thereby can meet different braking needs.
The above, only embodiments of the invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with embodiment, but not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solution of the present invention content, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (8)
1. a brake system of car, comprise brake pedal, vacuum booster and master cylinder, described brake pedal and described master brake cylinder mechanical connection, described vacuum booster is the auxiliary device between described brake pedal and described master brake cylinder, it is characterized in that: described brake system of car also comprises vacuum pump, braking information collection module and controls module; Described braking information is collected module collection and is stepped on power, displacement and the speed brake information of described brake pedal, and these braking information are sent to described control module; Described vacuum pump is connected with described vacuum booster, the information that described control module is collected module transmission according to described braking information judges braking situation, in the time stepping on power, displacement and the speed of described brake pedal and all exceed preset value, be judged as need to be larger braking force and response fast; In the time stepping on power, displacement and the speed of described brake pedal and all do not exceed preset value, be judged as and need normal brake application power and normal response speed; When power and the speed of stepping on brake pedal do not exceed preset value, and displacement is while exceeding preset value, be judged as need to be larger braking force and normal response speed; Described control module, according to vacuum pump work described in judged result control, makes the pressure reduction of vacuum booster inside and the speed of response need to change with different braking.
2. brake system of car as claimed in claim 1, is characterized in that: described master brake cylinder comprises piston, and described brake system of car also comprises the push rod that connects described brake pedal and described piston; Described vacuum booster comprises push rod, and described push rod is connected with described piston rod.
3. brake system of car as claimed in claim 2, is characterized in that: described brake system of car also comprises wheel cylinder and drg, and described wheel cylinder is connected by oil pipe with described master brake cylinder; When described brake pedal is stepped on, described push rod and described push rod promote described piston forward and move, and the fluid of described master brake cylinder is pressed into described wheel cylinder, and described wheel cylinder is by extremely described drg of the force transmission of fluid.
4. brake system of car as claimed in claim 1, is characterized in that: described braking information is collected module and comprised displacement sensing device, speed sensor and power sensor.
5. an automobile brake method, its step comprises:
Step on brake pedal, the force transmission of described brake pedal is to master brake cylinder;
Power, displacement and the speed brake information of brake pedal are stepped in the collection of brake application information module, and these braking information are sent to control module;
Described control module judges braking situation according to described braking information, in the time stepping on power, displacement and the speed of described brake pedal and all exceed preset value, be judged as need to be larger braking force and response fast; In the time stepping on power, displacement and the speed of described brake pedal and all do not exceed preset value, be judged as and need normal brake application power and normal response speed; When power and the speed of stepping on brake pedal do not exceed preset value, and displacement is while exceeding preset value, be judged as need to be larger braking force and normal response speed; Control module according to judged result control vacuum pump, make the pressure reduction of vacuum booster inside and the speed of response need to change with different braking;
The application force that described brake pedal is passed to described master brake cylinder by described vacuum booster amplifies.
6. automobile brake method as claimed in claim 5, is characterized in that: described control module is vehicle electronic control unit (Electronic Control Unit, ECU).
7. automobile brake method as claimed in claim 5, is characterized in that: described braking information is collected module and comprised displacement sensing device, speed sensor and power sensor.
8. an automobile, comprise vehicle electronic control unit (Electronic Control Unit, ECU), it is characterized in that: described automobile also comprises the brake system of car as described in claim 1 to 4 any one, described control module is described vehicle electronic control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210336260.7A CN102826081B (en) | 2012-09-12 | 2012-09-12 | Automobile brake system, method and automobile with brake system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210336260.7A CN102826081B (en) | 2012-09-12 | 2012-09-12 | Automobile brake system, method and automobile with brake system |
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| Publication Number | Publication Date |
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| CN102826081A CN102826081A (en) | 2012-12-19 |
| CN102826081B true CN102826081B (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210336260.7A Active CN102826081B (en) | 2012-09-12 | 2012-09-12 | Automobile brake system, method and automobile with brake system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108909696B (en) * | 2018-06-12 | 2020-09-11 | 浙江吉利汽车研究院有限公司 | Intelligent control system and method for electronic brake vacuum pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060090890A (en) * | 2005-02-11 | 2006-08-17 | 기아자동차주식회사 | Brake booster device for vehicle |
| CN201128414Y (en) * | 2007-12-17 | 2008-10-08 | 比亚迪股份有限公司 | Vacuum booster unit for electric automobile |
| US9002608B2 (en) * | 2010-02-09 | 2015-04-07 | Ford Global Technologies, Llc | Electro-hydraulic brake-by-wire system and method |
| CN202279101U (en) * | 2011-09-06 | 2012-06-20 | 上海中科深江电动车辆有限公司 | Servo braking system for four-wheel drive electric automobile |
| CN202368561U (en) * | 2011-12-12 | 2012-08-08 | 北汽福田汽车股份有限公司 | Vacuum power-assisted auxiliary braking system and automobile |
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