Bi-directional pressure difference adjusting device

Abstract

The invention discloses a bi-directional pressure difference regulating device, which is movably arranged in the valve body of a relay valve or an emergency relay valve, and the valve body corresponding to one end of the bi-directional pressure difference regulating device is provided with an inlet and exhaust through hole. The bi-directional pressure difference regulating device comprises a sealing valve, a one-way valve, an adjusting spring and an adjusting valve seat. As that pressure regulate controller supply air to the intake and exhaust through-holes during braking, When the airflow passes through the seal valve and one-way valve of the two-way pressure difference adjusting device, because of the force of the adjusting spring, the gas needs to overcome the spring limit force to makethe seal valve move and open the valve, the gas can flow to the decompression chamber through the inlet and exhaust holes, and the pressure difference is generated, so that the pressure of the decompression chamber is lower than the pressure of the air supply. As that brake is release, the air in the decompression chamber flow to the one-way valve through the inlet and exhaust holes, and is discharged through the inlet and exhaust holes after overcoming the spring resistance, so that the purpose of no decompression at the initial braking stage is achieved, the braking response is advanced, and the braking effect is more ideal.

Description

technical field [0001] The invention relates to the technical field of automobile brake control, in particular to a two-way differential pressure regulating device. Background technique [0002] With the development of the automobile industry, the continuous innovation of the first brake system relay valve and the emergency relay valve and the popularization of the application of the stepless pressure variable relay valve, the patents 200720117752.1 and 201020298442.6, which I applied for first, are used in conjunction with the two patents , especially on semi-trailers, which are well received by users, but there are still deficiencies found in use, mainly manifested in the lagging of braking effects, and it is difficult to achieve the desired effect. With the popularization and application of automatic adjustment arms, multi-wheel braking The inconsistency of the braking force of each wheel on the car is prominent, especially the inconsistency of the braking force of the se...

AI Technical Summary

Problems solved by technology

[0002] With the development of the automobile industry, the continuous innovation of the first brake system relay valve and the emergency relay valve and the popularization of the application of the stepless pressure variable relay valve, the patents 200720117752.1 and 201020298442.6, which I applied for first, are used in conjunction with the two patents , especially on semi-trailers, which are well received by users, but there are still deficiencies found in use, mainly manifested in the lagging of braking effects, and it is difficult to achieve the desired effect. With the popularization and application of automatic adjustment arms, multi-wheel braking The inconsistency of the braking force of each wheel on the car is prominent, especially the inconsistency of the braking force of the semi-trailer, the problem is even more obvious

Due to the inconsistent braking of each wheel, it brings a lot of trouble to the ABS control system and cannot work well, so a solution is urgently needed

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