Multifunctional shuttle valve type dual-motor redundancy braking system and control method thereof

A braking system and dual-motor technology, applied in the field of servo braking systems, can solve the problems of difficulty in meeting the servo braking capability of vehicles and the inability of a single electro-hydraulic servo brake solution.

Pending Publication Date: 2021-07-06
南京经纬达汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to solve the problem that the vacuum booster assembly scheme and the single electro-hydraulic servo brake scheme in the prior art cannot or are difficult to meet the servo braking capacity of vehicles with a higher design tonnage, and propose a multi-functional dual-motor redundant brake System and its control method

Method used

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  • Multifunctional shuttle valve type dual-motor redundancy braking system and control method thereof
  • Multifunctional shuttle valve type dual-motor redundancy braking system and control method thereof
  • Multifunctional shuttle valve type dual-motor redundancy braking system and control method thereof

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Embodiment 1

[0067] Please refer to figure 1 , this embodiment provides a multifunctional shuttle valve dual-motor redundant braking system, including a main electro-hydraulic servo brake assembly 1, an auxiliary electro-hydraulic servo brake assembly 2, a brake pedal assembly 3, a fluid storage Tank 4, primary brake master cylinder 5, auxiliary brake master cylinder 6, shuttle valve 7, hydraulic control unit (HCU) 8 and brake group 9. Among them: the main electro-hydraulic servo brake assembly 1 and the auxiliary electro-hydraulic servo brake assembly 2 are connected through CAN bus communication, and the two ends of the main electro-hydraulic servo brake assembly 1 are respectively connected to the brake pedal assembly 3 and The main brake master cylinder 5 is connected, and the auxiliary electro-hydraulic servo brake assembly 2 is connected with the auxiliary brake master cylinder 6 .

[0068] In this embodiment, the fluid storage tank 4 is used to provide brake fluid to the main brake...

Embodiment 2

[0106] The structure of the dual-motor redundant braking system in this embodiment is basically the same as in Embodiment 1, the difference being that: the first brake set in this embodiment is composed of a left rear wheel brake LR and a right rear wheel brake RR; The brake group is composed of left front wheel brake LF and right front wheel brake RF. The four oil outlets of the hydraulic control unit 8 are respectively connected with LR, RR, LF and RF. At this time, the braking system is an H-shaped arrangement.

Embodiment 3

[0108] The structure of the dual-motor redundant braking system in this embodiment is basically the same as that in Embodiment 1, the difference being that the first brake set in this embodiment consists of a left front wheel brake LF and a right rear wheel brake RR, and the second The brake group consists of the right front wheel brake RF and the left rear wheel brake LR. The four oil outlets of the hydraulic control unit 8 are respectively connected with LF, RR, RF and LR. At this time, the brake system is an X-shaped arrangement.

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Abstract

The invention provides a multifunctional shuttle valve type dual-motor redundancy braking system and a control method thereof. The braking system mainly comprises a brake pedal assembly, a main electro-hydraulic servo brake assembly, an auxiliary electro-hydraulic servo brake assembly, a shuttle valve, a hydraulic control unit and a brake set. Wherein the main electro-hydraulic servo brake assembly is connected with the brake pedal, and the main electro-hydraulic servo brake assembly and the auxiliary electro-hydraulic servo brake assembly are in communication connection. A front cavity of a main brake master cylinder is directly connected to one oil inlet of the hydraulic control unit through a first loop, a rear cavity of the main brake master cylinder and an auxiliary brake master cylinder are connected to two oil inlets of the shuttle valve through a second loop and a third loop respectively, and an oil outlet of the shuttle valve is connected with the other oil inlet of the hydraulic control unit through a fourth loop. The hydraulic control unit is connected to the brake set through a brake pipeline. The system can meet the requirement of servo braking of vehicles with high design tonnage, and has the advantages of being compact in structure, convenient to arrange, optimal in braking pressure distribution and the like.

Description

technical field [0001] The invention belongs to the technical field of automobile braking, and in particular relates to a servo braking system in a hydraulic braking system. Background technique [0002] Automobile braking systems can be divided into mechanical, hydraulic, pneumatic, electromagnetic, etc. according to the different transmission methods of braking energy. Among them, the braking energy transmission mode of the hydraulic braking system is hydraulic pressure, that is, the hydraulic pressure is increased by compressing the brake fluid in the braking system during braking. After the hydraulic pressure is transmitted to the wheel brake, it will finally push the friction plate to stick to the brake The disc or brake drum produces a braking torque that hinders the rotation of the wheel, and finally the ground reacts on the wheel with a ground braking force that is opposite to the direction of travel to brake the vehicle. [0003] Compared with the pneumatic brake s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/74
CPCB60T13/74B60T13/745
Inventor 丁能根史晓波邓伟文
Owner 南京经纬达汽车科技有限公司
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