Electrohydraulic composite braked brake valve for vehicle line control and control method thereof

Abstract

The invention relates to a brake valve for vehicle wire control electro-hydraulic brake and a control method thereof, which comprise a pedal sensing spring, a brake pedal, a mechanical action end, a mechanical action spring and a brake valve core. The brake valve also comprises a pedal position senor, an electronic controller, an electromagnetic coil, and an armature, wherein the pedal position senor is arranged on the pedal, the armature is arranged on a decompressed valve core near the end of the brake pedal, the two sides of the armature are provided with corresponding electromagnetic coils, and the sensor, the electronic controller and the electromagnetic coil are connected by a lead. The senor senses the displacement of the pedal and generates a corresponding signal and sends the signal to the electronic controller to supply corresponding current to coils, and the coils generate an electromagnetic force to control the movement of the brake valve core to realize brake; when an electrical fault occurs, the device can also carry out mechanical brake when a drive tramples the pedal deeply. The brake valve is simple in structure, can realize wire control of the brake pipe fluid pressure, and has the capacity of mechanical backup brake under the condition of the electrical fault.

Description

technical field [0001] The invention relates to a braking valve, in particular to an electromechanical dual-purpose braking valve for vehicle wire-controlled hydraulic braking. Background technique [0002] Current electric vehicles or hybrid vehicles with electric drive all have the capability of electric motor regenerative braking. However, the traditional hydraulic braking system has no ability to control the pressure of the brake line, and the hydraulic braking force can only increase proportionally with the driver's pedal force. Therefore, this kind of braking system cannot fully utilize the regenerative braking capability of the motor, and cannot give full play to the advantages of the motor-driven vehicle in realizing the recovery of braking energy. Contents of the invention [0003] The purpose of the present invention is to solve the technical problem that the existing hydraulic brake system cannot control the pressure of the brake pipeline, and to provide a brak...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problem that the existing hydraulic brake system cannot control the pressure of the brake pipeline, and to provide a brake valve and its control method for vehicle-by-wire electro-hydraulic brake, which can Realize on-line control of the hydraulic pressure of the brake pipeline, and have mechanical backup braking capability under electrical failure

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