Valve assembly, electromagnetic valve and electromagnetic valve compression spring secondary adjusting method

Abstract

The invention provides a valve assembly, an electromagnetic valve and an electromagnetic valve compression spring secondary adjusting method. The valve assembly comprises a valve sleeve, a valve element assembly, an elastic element, a supporting unit and a power unit. The valve sleeve is provided with inner space formed in the extending direction of the valve sleeve. The valve element assembly andthe supporting unit are both arranged in the inner space. One end of the elastic element is arranged at one end of the valve element assembly, and the other end of the elastic element is arranged onthe supporting unit. The other end of the valve element assembly is used for being connected with an electromagnetic assembly so that the valve element assembly can move in the extending direction. The power unit is used for driving the supporting unit to move in the extending direction. The improvement is made on the valve assembly, and after the related valve assembly is assembled, the compression amount of the elastic element can still be adjusted according to the usage situation, accordingly, the problem about inaccurate control over the electromagnetic valve due to the assembling error issolved, and the valve output performance requirement is met.

Description

technical field [0001] The invention belongs to the field of solenoid valves, and relates to a secondary adjustment method for a valve assembly, a solenoid valve and a compression spring of the solenoid valve. Background technique [0002] In order to achieve controllable output pressure or output flow, the solenoid valve used in the existing automatic transmission of passenger vehicles generally uses a proportional electromagnet to provide the electromagnetic force required by the solenoid valve to drive the valve core to move, thereby realizing pressure or flow adjustment. The spool of the solenoid valve establishes a dynamic balance under the action of electromagnetic force, hydraulic pressure and spring force. In the case of a given coil current, the electromagnetic part generates electromagnetic force to act on the spool, pushing the spool to move, and at the same time the spool is affected by The hydraulic feedback force and the spring force act until the three forces ...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a secondary adjustment method for valve components, solenoid valves and solenoid valve compression springs, aiming to solve the problem of increasing the defect rate of solenoid valves caused by determining the spring pre-tightening force by using a fixed spring displacement method in the prior art The problem

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