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Electrohydraulic composite brake system for improving pedal feeling in brake process of antilock brake system(ABS)

An electro-hydraulic composite and braking system technology, which is applied in the direction of braking transmission, brakes, fluid pressure actuators, etc., can solve the problems of brake pedal fluctuations and vibrations, achieve low cost, and improve the effect of pedal feeling

Inactive Publication Date: 2017-12-15
CONTINENTAL AUTOMOTIVE SYST SHANGHAI
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Problems solved by technology

[0003] The main purpose of the present invention is to provide an electro-hydraulic hybrid braking system that improves the feeling of the brake pedal during the ABS braking process, which solves the problem of the brake pedal fluctuating and shaking during the ABS braking process, and improves the pedal feeling and the subjective feeling of the driver. to feel

Method used

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  • Electrohydraulic composite brake system for improving pedal feeling in brake process of antilock brake system(ABS)
  • Electrohydraulic composite brake system for improving pedal feeling in brake process of antilock brake system(ABS)

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Embodiment Construction

[0017] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0018] The present invention provides an electro-hydraulic composite braking system that improves the feeling of the brake pedal during the ABS braking process, which is based on the hydraulic braking system in the prior art, and can overcome the traditional ABS / ESC product during the ABS braking process. Since the fluid needs to flow continuously between the master cylinder and the wheel cylinder during the pressurization and depressurization process, it causes the brake pedal to rise and fall continuously, and the pedal feels uncomfortable.

[0019] Such as figure 1 As shown, this embodiment takes the ESC braking system as an example to illustrate the electro-hydraulic hybrid braking system of the p...

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Abstract

The invention discloses an electrohydraulic composite brake system for improving pedal feeling in the brake process of an antilock brake system(ABS). The electrohydraulic composite brake system comprises a brake control system and a brake channel, wherein the brake channel comprises a first circuit for fundamental brake and a second circuit for assisting brake; the first circuit sequentially comprises a main cylinder, a main cylinder isolation valve, a pressurizing valve and a wheel cylinder, and is a channel between the outlet end of the main cylinder to the inlet end of a relief valve; the second circuit sequentially comprises the relief valve, a low-pressure power accumulator, a pump motor and a high-pressure power accumulator, which are connected; and the brake control system comprises an electronic control unit, a main cylinder pressure sensor connected to the main cylinder and a wheel speed sensor connected to the wheel cylinder.

Description

technical field [0001] The invention relates to an automobile braking system, in particular to an electro-hydraulic composite braking system which improves the pedal feeling during ABS braking. Background technique [0002] At present, in the vehicle control system, anti-lock ABS or ESC system is usually installed. The current ABS / ESC products, when the ABS brakes, need to continuously reduce and increase the pressure; during the process of reducing the pressure, the pump motor continuously pumps out the liquid discharged from the wheel cylinder to the low-pressure accumulator and pressurizes it. At this time, the brake pedal will rise; in the process of boosting, the liquid in the master cylinder will be pressed back to the wheel cylinder, and the brake pedal will fall at this time; this cycle will give the driver a feeling of That is, the brake pedal is constantly rising and falling, which is the so-called pedal vibration phenomenon, and the pedal feels uncomfortable, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T11/228
CPCB60T11/228
Inventor 刘松山盛守宏苏剑
Owner CONTINENTAL AUTOMOTIVE SYST SHANGHAI
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