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High-redundancy intelligent integrated automobile drive-by-wire electronic hydraulic braking system

A hydraulic braking, integrated technology, applied in the direction of brakes, brake transmissions, vehicle components, etc., can solve the problems of insufficient system safety redundancy and inability to meet the development requirements of high-level vehicle braking technology, and achieve the wide range of effects

Pending Publication Date: 2022-07-15
武汉瑞立科德斯汽车电子有限责任公司
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AI Technical Summary

Problems solved by technology

Electro-hydraulic brake system (EHB) is one of the brake-by-wire systems. Some EHB systems use high-pressure accumulators as pressure sources and solenoid valves to control and adjust the pressure. Large vehicles, but the system safety redundancy is not high enough to meet the development requirements of braking technology for high-level vehicles

Method used

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  • High-redundancy intelligent integrated automobile drive-by-wire electronic hydraulic braking system

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Embodiment Construction

[0010] The present invention will be further described below with reference to the accompanying drawings.

[0011] like figure 1 Shown is the schematic diagram of the hydraulic control unit of the highly redundant intelligent integrated automotive electronic hydraulic brake system by wire. The main components include the secondary normally closed solenoid valve 1, the check valve 2, the first normally open solenoid valve 3, the second normally closed solenoid Open solenoid valve 4, first boost normally closed solenoid valve 5, second boost normally closed solenoid valve 6, third boost normally closed solenoid valve 7, fourth boost normally closed solenoid valve 8, first boost normally closed solenoid valve 8 Open solenoid valve 9, second boost normally open solenoid valve 10, third boost normally open solenoid valve 11, fourth boost normally open solenoid valve 12, first decompression normally closed solenoid valve 13, second decompression normally closed solenoid valve 13 Cl...

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Abstract

The invention discloses a high-redundancy intelligent integrated automobile drive-by-wire electronic hydraulic braking system which comprises an electronic control unit and a hydraulic control unit, and the electronic control unit integrates functional circuits of an EHB and an ESC. The hydraulic control unit comprises a power-assisted mechanism, the power-assisted mechanism comprises a motor 24 and a high-pressure energy accumulator 28, the motor 24 and the high-pressure energy accumulator 28 are backup redundancy for each other, the motor 24 directly drives a plunger pump to provide power-assisted braking, the high-pressure energy accumulator 28 provides power-assisted braking through a stored high-pressure source, and the hydraulic control system has the advantages of being high in redundancy, high in safety and wide in applicable vehicle type range.

Description

technical field [0001] The invention relates to the technical field of automotive electronic braking systems, in particular to a high-redundancy intelligent integrated automotive wire-controlled electronic hydraulic braking system. Background technique [0002] With the continuous development of vehicle intelligent driving technology, high-level autonomous driving will improve the way people travel in the future. With more and more functions of the vehicle, the safety and reliability of the braking system is more important. The high-redundancy and high-safety brake-by-wire technology is an inevitable trend in the development of the braking system. Electronic hydraulic brake system (EHB) is one of the brake-by-wire systems. Some EHB systems use high-pressure accumulators as the pressure source and solenoid valves to control and adjust the pressure. Large vehicles, but the system safety redundancy is not high enough to meet the braking technology development requirements of h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/40B60T13/14B60T13/68B60T13/74
CPCB60T8/409B60T13/147B60T13/148B60T13/686B60T13/745
Inventor 程毅王磊陈勇辉江少华徐诚
Owner 武汉瑞立科德斯汽车电子有限责任公司
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