A hydraulically controlled brake-by-wire system
A brake-by-wire and hydraulic technology, applied in brake actuators, gear shifting mechanisms, mechanical equipment, etc., can solve the problems of large number and complex structure of actuator parts, reduce space layout, and eliminate electronic control units. , the effect of simple structure
Active Publication Date: 2019-11-12
HEFEI UNIV OF TECH
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Problems solved by technology
In addition, the actuator parts in the traditional electromechanical braking system are complex in structure and large in number, so how to increase its torque and reduce the volume of the system is still a problem to be solved
[0008] The response time of the traditional electromechanical braking system is about 0.03s, the mass of the system is much greater than 10kg, and the radial size of the shell is large, so there is a lot of room for improvement. Save manufacturing costs and increase profits
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[0035] In the following, the present invention will be further described in detail through embodiments with reference to the accompanying drawings.
[0036] See figure 1 , A hydraulically regulated line control system includes a brake mechanism and a brake control mechanism. The brake mechanism includes a brake cylinder 4, a brake disc 6 and a brake pad 5.
[0037] The brake control mechanism includes a mechanism body and a pressure adjustment mechanism.
[0038] The mechanism body includes a columnar body 25 and a cover 19, and the body is horizontal. The oil storage chamber 14 and the working oil chamber 10 are axially parallel to the two sides of the body 25. The oil storage chamber 14 and the working oil chamber 10 are connected by a common wall; the common wall between the oil storage chamber 14 and the working oil chamber 10 An oil inlet check valve 11 and an oil return check valve 12 are provided on it. One axial end of the oil storage chamber 14 is a closed end on the body,...
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The invention relates to a hydraulically-regulated braking system. The braking system comprises a brake mechanism and a brake control mechanism, wherein the brake mechanism comprises a brake branch pump, a brake disc and a brake pad, and the brake control mechanism comprises a mechanism body and a pressure adjusting mechanism; the mechanism body comprises an oil storage cavity and a working oil cavity, and an oil inlet one-way valve and an oil return one-way valve are arranged on the common wall of the oil storage cavity and the working oil cavity respectively; the oil outlet end of the working oil cavity communicates with the axial end of a pump piston cylinder of the brake branch pump; the pressure adjusting mechanism comprises a direct-current motor, a ball screw transmission mechanismand a piston mechanism; a piston valve of the piston mechanism is matched with the other end of the working oil cavity; and during braking, the direct current motor rotates in the forward direction orthe reverse direction, the brake pad is clamped by the brake control mechanism, or the brake disc is loosened, and braking is realized or released. According to the hydraulically-regulated braking system, the radial size of a shell is reduced by at least 30%, and miniaturization is realized; the total mass is not more than 1.5kg, and light weight is achieved; and the response time of the brakingsystem is about 0.01s-0.02s, and the braking distance is shorter.
Description
Technical field [0001] The invention belongs to the technical field of automobile brake systems, and in particular relates to a hydraulically boosted brake-by-wire system. [0002] technical background [0003] Automobile braking system plays a vital role in automobile safety performance. With the continuous improvement of automobile driving speed and the increasing number of vehicles on the road, higher requirements are put forward on the braking system. Automotive brake-by-wire system is a braking concept that uses electricity as a conductive medium and is an advanced mechatronics system. At present, automobile brake-by-wire systems mainly include electro-mechanical brake-by-wire systems (EMB, Electro-Mechanical Braking System) and electro-hydraulic brake-by-wire systems (EHB, Electro-Hydraulic Braking System). [0004] The electronic hydraulic brake system is developed on the basis of the traditional hydraulic brake. The operating mechanism uses an electronic brake pedal to repla...
Claims
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IPC IPC(8): F16D65/14F16D121/04
CPCF16D65/14F16D2121/04
Inventor 邱明明刘泽链曹龙凯王强黄康
Owner HEFEI UNIV OF TECH