Electronical control air pressure regulating valve for commercial vehicle line control brake system and control method thereof

Abstract

The invention discloses an electronical control air pressure regulating valve for a commercial vehicle line control brake system and a control method thereof, and relates to the technical field of vehicle braking. The regulating valve comprises a motor, a valve body and a valve cover, the valve cover is installed at two ends of the valve body, the side wall of the valve body is provided with an air inlet, an air outlet and an exhaust port, the valve body internally comprises a power cavity, a displacement adjusting cavity and an air inlet cavity, a coupling, a screw and a screw sleeve are arranged in the power cavity, the screw sleeve is sleeved on the periphery of the screw, the coupling is connected with the screw and a rotating shaft of the motor; a micromicrowatt, a traction member andan ejector pin are arranged in the displacement adjusting cavity, the micromicrowatt is in contact with the screw sleeve, the traction member is respectively and elastically connected with the micromicrowatt and the ejector pin, a switch piston and a return spring are arranged in the air inlet cavity, the switch piston is in contact with the ejector pin, the switch piston is connected with the return spring, and the return spring is fixedly connected with the valve cover. The embodiment of the invention can solve the problem that the regulating valve in the prior art uses the gas as a mediumfor transmitting signals, and has asynchronized braking of each wheel, uncoordinated braking and small braking force.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of vehicle braking, and in particular to an electronically controlled air pressure regulating valve of a commercial vehicle brake-by-wire system and a control method thereof. Background technique [0002] The braking system is an important part of automobile driving safety, and the quality of the automobile braking system directly affects people's travel safety. At present, medium and large trucks and trailers that use pneumatic braking, the pneumatic braking method is that the driver steps on the brake pedal to open the brake valve, and the brake valve controls the ratio of the air output according to the pedaling force to perform braking, that is, the brake pedal generates an air pressure signal, Using gas as the transmission medium, the air pressure signal is transmitted to the main regulating valve through the pipeline, so as to control the front and rear wheels and the trailer to b...

AI Technical Summary

Problems solved by technology

[0003] To this end, the embodiment of the present invention provides an electronically controlled air pressure regulating valve and its control method for a commercial vehicle brake-by-wire system to solve the problem that the regulating valve in the prior art uses gas as the medium for transmitting signals, and the brakes of each wheel are not Problems of synchronization, uncoordinated braking, and low braking force

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