Electromagnetic relay valve for electronic stability program of automobile

Abstract

The invention relates to an electromagnetic relay valve for an electronic stability program of an automobile, comprising a fixed iron, a moving iron, a first spring, a plunger tube, a valve body, a valve nozzle, a plug, a valve core, a second spring and a throttling orifice. The valve core is in the valve body in a reverse mode; the valve nozzle is fixedly connected with the moving iron and mounted in the valve body in such a way that the opening of the valve nozzle faces downwards; the second spring, the rigidity of which is less than that of the first spring, is compressively mounted between the bottom of the valve core and opening of the valve nozzle; the bottom of the valve core is provided with a valve port which is in airproof contact connection with the plug; the top of the valve core is an annular face which extends out of the valve nozzle port under the action of the second spring and is sealed with the internal diameter of the end part of the valve body; the throttling orifice is arranged adjacent to the valve port; and brake fluid flows to the valve port through the throttling orifice. Compared with the traditional electromagnetic valve, the electromagnetic valve has the characteristics of great passing ability without influencing the response time thereof.

Description

technical field [0001] The invention relates to an electromagnetic relay valve for an automobile electronic stabilization program. Background technique [0002] In the traditional ABS solenoid valve structure, the solenoid valve structure of the two-position two-way valve is widely used, and the on-off of the hydraulic circuit is controlled by the gain and loss of the coil. The response time of the traditional solenoid valve is the combined effect of four forces: electromagnetic force, hydraulic force, damping force and friction force. Among them, the electromagnetic force and hydraulic force are the most important factors, and the electromagnetic force generally uses 12V for the power supply of the car. When the number of turns of the energized coil is fixed, the influence of the electromagnetic force on the solenoid valve is unchanged, so it affects the solenoid valve. The main factor in response time is hydraulic power. By the Bernoulli equation of fluid mechanics, the ...

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Problems solved by technology

But at the same time, the increase of the flow field pressure generated by the large fluid passage capacity leads to a larger force to be overcome when the solenoid valve is opened, on the contrary, it leads to a longer response time of the solenoid valve

[0003] In addition, since the ESP plunger pump needs a certain back pressure when it is working, it is necessary to establish a certain pressure at the front end of the ESP plunger pump. Since the human body does not move the pedal when the ESP is working, there is no pressure on the brake master cylinder, so the ESP column The back pressure of the plug pump can only be generated by the internal structure of the brake circuit

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