A double hydraulic cylinder brake-by-wire system
A brake-by-wire, dual-hydraulic cylinder technology, applied in the direction of brakes, brake transmissions, vehicle components, etc., can solve the problems of small braking distance, difficult layout, complex structure, etc., to reduce the space occupied and production. cost effect
Active Publication Date: 2022-04-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
[0009] Aiming at the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a dual-hydraulic-cylinder brake-by-wire system to overcome the complex structure, difficult layout, risk of oil leakage and control problems of the brake-by-wire system in the prior art. The vibration generated during braking is transmitted to the brake pedal; the invention can not only realize wire-controlled braking, but also realize conventional hydraulic braking when the wire-controlled braking fails, and has low production cost, small braking distance and high safety ;By providing a combination of two magnets of the same polarity and a non-linear spring, the decoupling of the brake pedal and the brake master cylinder is realized, ensuring that the vibration generated during the control-by-wire braking process will not be transmitted to the brake pedal; Through the boosting effect of the vacuum booster, the oil in the pipeline can quickly build up high pressure, reduce the space occupied by the brake system, reduce costs, and prevent oil leakage
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[0029] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.
[0030] refer to figure 1 , figure 2 , image 3As shown, a dual-hydraulic-cylinder brake-by-wire system of the present invention includes: a liquid storage tank 1, a displacement sensor 2, a brake pedal 3, a vacuum booster 4, a first push rod 5, a second push rod 6, a first A hydraulic cylinder 7, a first magnet 8, a spring 10, a second magnet 11, a connecting rod 13, a second hydraulic cylinder 15, a ball screw structure 17, a second hydraulic cylinder piston 18, a motor 19 and a control unit;
[0031] The displacement sensor 2 is used to detect the brake signal of the brake pedal 3, one end of the first push rod 5 is connected to the brake pedal 3, and the other end is connected to the v...
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The invention discloses a dual-hydraulic-cylinder brake-by-wire system, comprising: a liquid storage tank, a displacement sensor, a brake pedal, a vacuum booster, a first push rod, a second push rod, a first hydraulic cylinder, a first magnet, Spring, second magnet, connecting rod, second hydraulic cylinder, ball screw structure, second hydraulic cylinder piston, motor and control unit; the present invention provides a combination of two magnets of the same polarity and a nonlinear spring, Realize the decoupling of the brake pedal and the brake master cylinder, so as to ensure that the vibration generated during the control-by-wire braking process will not be transmitted to the brake pedal; through the boosting effect of the vacuum booster, the oil in the pipeline can quickly build up high pressure , Reduce the space occupied by the brake system, reduce costs, and prevent oil leakage.
Description
technical field [0001] The invention belongs to the technical field of automobile braking systems, and in particular relates to a double hydraulic cylinder type wire-controlled braking system. Background technique [0002] With the development of automobile technology, "intelligence, networking, and electrification" is the development direction of future automobiles, and the brake-by-wire system is the key technology for realizing automobile intelligence. Compared with the traditional brake system, the brake-by-wire system is small in size and flexible in assembly, which can reduce the difficulty of chassis design and layout, make the layout of the whole vehicle more convenient, and facilitate the realization of the modular design of the automobile chassis. Brake-by-wire is the development direction of future automotive braking technology. It can deeply integrate the functional modules of automotive automatic driving, which is the era's need for smart cars, smart transportat...
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IPC IPC(8): B60T13/14B60T13/72
CPCB60T13/72B60T13/14
Inventor 张瑞军赵万忠王春燕徐灿吴刚
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS