Automotive distributed electronic hydraulic braking system with pressure retaining valves

Abstract

The invention relates to an automotive distributed electronic hydraulic braking system with pressure retaining valves, which belongs to the technical field of automobile braking systems, and comprises a braking operation unit, an electromagnetic valve block, a pedal feeling simulator, a left front wheel braking actuating mechanism, a left front brake, a left front pressure retaining valve, a right front wheel braking actuating mechanism, a right front brake, a right front pressure retaining valve, a left rear wheel braking actuating mechanism, a left rear brake, a left rear pressure retaining valve, a right rear wheel braking actuating mechanism, a right rear brake and a right rear pressure retaining valve. The automotive distributed electronic hydraulic braking system with the pressure retaining valves can avoid that an ESC (electronic stability control) system cannot perform braking interference when part of the wheel braking actuating mechanisms fails, and is beneficial to improvement on ESC interference effects when part of the wheel braking actuating mechanisms fails. Besides, when the wheel braking actuating mechanisms are used for establishing pressure of the brakes, the pressure of the brakes can be retained without continuously electrifying motors of the wheel braking actuating mechanisms, so that energy consumption is reduced.

Description

technical field [0001] The invention relates to an automobile distributed electronic hydraulic braking system with a pressure maintaining valve, which belongs to the technical field of automobile braking systems. Background technique [0002] Automobile Distributed Electronic Hydraulic Brake (hereinafter referred to as DEHB) system is a distributed, wet-by-wire brake system. The distributed feature makes it less likely that all wheel brake actuators will fail at the same time. The wet type feature brings two benefits: 1. It makes the system easy to integrate the backup hydraulic brake system so that all wheel brake actuators fail. In the case of providing braking force, the brake can be implemented through the backup hydraulic braking system. 2. It is convenient to provide flexible reconfiguration braking mode in the case of failure of some wheel brake actuators through hydraulic design. Through different reconfiguration systems It is helpful to provide better reconfigured ...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and propose a distributed electronic hydraulic braking system for automobiles with a pressure maintaining valve, which integrates a backup hydraulic braking system through a solenoid valve block, so that the driver can In the case that none of the wheel brake actuators can provide braking force, the brake can be implemented by its own physical strength through the backup hydraulic brake system; the system also integrates the front and rear axle balance valves through the solenoid valve block, and some wheel brake actuators In case of failure, it can provide flexible reconfiguration braking mode, which helps to improve the effect of system reconfiguration braking when some wheel brake actuators fail; In the case of failure of the brake actuator, there will be no situation where the automotive electronic stability control system (hereinafter referred to as ESC) cannot implement brake intervention, and it will help to improve the effect of ESC intervention in this case; valve, so that when the system uses the wheel brake actuator to build up the brake pressure, the brake pressure can be maintained without continuously energizing the motor of the wheel brake actuator to reduce energy consumption

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