Electronic control air suspension spring stiffness adjusting structure

Abstract

The invention discloses an electronic control air suspension spring stiffness adjusting structure. The electronic control air suspension spring stiffness adjusting structure is characterized by comprising an air spring stiffness controller, a proportional electromagnetic valve, a shock absorber, a rubber pneumatic bag and a sensor, wherein the air spring stiffness controller and the proportional electromagnetic valve form a control loop; the operation parameters of a whole vehicle system are collected through the sensor and are input into the air spring stiffness controller; the air spring stiffness controller outputs a control signal to the proportional electromagnetic valve through calculation; the proportional electromagnetic valve achieves stiffness adjustment of an air flowing area between a main air chamber and an additional air chamber of an air spring. Continuous infinitely variable adjustment of a throttling hole area between the main air chamber and the additional air chamber of the air spring connected with the additional air chamber is achieved, the stiffness of the air spring continuously changes within the certain range under the condition of no inflation and deflation, the running comfort and operation stability of a vehicle are ensured, the frequency that inflation and deflation of the air spring change the stiffness of the air spring is reduced, and reliability of the whole system is improved.

Description

technical field [0001] The invention relates to the field of automobile control, in particular to an electronically controlled air suspension spring stiffness adjustment structure. Background technique [0002] The vehicle suspension can isolate and attenuate the vibration of the vehicle induced by road irregularities to improve the comfort of the occupants. Therefore, the performance of the suspension has an important impact on the ride comfort and handling stability of the vehicle. Because the stiffness and damping of the traditional passive suspension cannot be adjusted, it is difficult to meet the needs of the vehicle for ride comfort and handling stability under multiple working conditions. At the same time, the ride comfort and handling stability of the vehicle have a mutual restrictive relationship. The ideal suspension performance needs to adjust the stiffness and damping in time according to the various working conditions of the vehicle. The electronically controll...

AI Technical Summary

Problems solved by technology

The stiffness adjustment of the existing electronically controlled air suspension is mainly achieved through the inflation and deflation of the air spring by the height control valve. Frequent inflation and deflation during the driving process of the vehicle increases energy consumption and reduces the life and reliability of the entire system

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