An electro-hydraulic servo brake system with multiple working modes
An electro-hydraulic servo and braking system technology, applied in the direction of brake control system, brake, brake components, etc., can solve the problem that the dynamic performance of the motor cannot meet the multi-channel multiplexing method, cannot meet the pressure regulation target, and fail the backup mechanism. Complex structure and other problems, to achieve good brake pedal feel, high reliability, and small system pressure fluctuations
Active Publication Date: 2018-11-02
南京经纬达汽车科技有限公司
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Problems solved by technology
The disadvantage of this dual-motor solution is that the two braking circuits are independent of each other, and the flexibility of the system control is poor, that is, it cannot be guaranteed that one can always be selected that is compatible with the dynamic performance of the motor when implementing the application and can exert the best performance of the system. control mode
For example, if the dynamic performance of the motor cannot meet the application of the multi-channel multiplexing method under the process material and cost control conditions during the implementation of the application, the system cannot achieve the pressure adjustment target that meets the braking requirements
In addition, the system's failure backup mechanism has a complex structure
Method used
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Embodiment Construction
[0038] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0039] see figure 1 , the present invention is an electro-hydraulic servo braking system with multiple working modes, which includes a brake pedal 1, a manpower cylinder 2, an electro-hydraulic servo cylinder 3, a brake master cylinder 4, a liquid storage tank 5, and a hydraulic control unit 6. Wheel cylinder 7, master cylinder pressure sensor 8, electronic control unit 10, pedal travel sensor 11. The electronic control unit 10, that is, ECU (Electronic Control Unit), is also called "driving computer" or "vehicle computer".
[0040] The human cylinder 2 includes a push rod 201, a clamp 211, a valve pipe 202, a rear housing 203, a pedal simulation spring 204, a rear piston 205, a rear piston return spring 206, a front housing 207, a front piston 208, and a push rod 209 , lock nut 210, clamp 211. Wherein, the valve tube 202 is located in the ...
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The invention discloses an electro-hydraulic servo brake system with multi-working modes. The electro-hydraulic servo brake system comprises a brake pedal, a manpower cylinder, an electro-hydraulic servo cylinder, a brake master cylinder, a liquid storage pot, a master cylinder pressure sensor, a hydraulic pressure control unit, a wheel cylinder, a motor, an electronic control unit and a brake pedal stroke sensor. The piston of the brake master cylinder is acted on through independence or overlaying of the electro-hydraulic servo cylinder and the manpower cylinder, and all or part of vehicle wheels are applied with brake. The electro-hydraulic servo brake system with the multi-working modes can work in an active brake mode, a line control mode and an assisted brake mode according to different brake requirements and has a backup manual braking function upon failure. The electro-hydraulic servo brake system has the advantages of the multi-working modes, the most suitable brake mode can be selected according to brake requirements in practical application, and high reliability and high failure protection capability are achieved.
Description
technical field [0001] The invention belongs to the technical field of automobile brake systems, and specifically relates to an electro-hydraulic servo brake system with multiple working modes. Background technique [0002] Automobile braking system is closely related to automobile driving safety. In addition to the traditional vacuum-assisted and electric-assisted servo braking systems and the anti-lock braking system (ABS) developed on their basis, new types of braking systems that have attracted attention in recent years include brake-by-wire systems, Such as electrohydraulic brake system (EHB) and electromechanical brake system (EMB). The brake-by-wire system can flexibly coordinate friction braking and regenerative braking, and can also conveniently realize active braking (the so-called "active braking" refers to the braking of some or all wheels without depressing the brake pedal. brake applied). The brake-by-wire system is superior to the traditional hydraulic brak...
Claims
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IPC IPC(8): B60T13/12B60T13/74
CPCB60T13/12B60T13/745B60T2270/402B60T2270/60B60T2270/82
Inventor 邓伟文丁能根
Owner 南京经纬达汽车科技有限公司