Combined type interconnected air suspension and interconnection mode control method thereof

Abstract

The invention discloses a combined type interconnected air suspension in a vehicle air suspension system and an interconnection mode control method thereof. On the basis of a traditional interconnected air suspension, transverse interconnected pipelines, longitudinal interconnected pipelines and diagonal interconnected pipelines are added, interconnection states are achieved through air springs without absorbers, an electromagnetic valve is added into each interconnected pipeline, and five modes of non-interconnection, transverse interconnection, longitudinal interconnection, four-corner interconnection and diagonal interconnection are achieved. On the one hand, contradiction of control stability and ride comfort of a vehicle is further relieved through the four interconnection modes of non-interconnection, transverse interconnection, longitudinal interconnection and four-corner interconnection and the capacity for adjusting the roll stiffness and the pitching stiffness of the air suspension, and on the other hand, by means of the diagonal interconnection mode, the ride comfort can be improved to a certain extent and certain control stability is ensured when the vehicle runs at a high speed, so that the sensitivity requirement of a control system is lowered, and the ride safety is ensured.

Description

technical field [0001] The invention relates to an air suspension system of a vehicle, in particular to an air suspension system with switchable interconnection modes. Background technique [0002] Air suspension is widely used in the field of modern automobiles due to its excellent stiffness characteristics and easy adjustment of vehicle body height. The interconnected air suspension is a derivative structure of the traditional air suspension. It connects two adjacent air springs in the traditional air suspension with pneumatic pipelines. According to the connection mode of the pneumatic pipelines, it can be divided into horizontal interconnected air suspensions. And the longitudinal interconnected air suspension, the horizontal interconnected air suspension is to connect the left and right coaxial air springs, and the longitudinal interconnected air suspension is to connect the front and rear air springs on the same side. There is generally a solenoid valve in the middle ...

AI Technical Summary

Problems solved by technology

[0006] According to the research results of the interconnected air suspension in recent years, the interconnection effect of the air suspension is inversely correlated with the length of the interconnected pipeline, and positively correlated with the inner diameter of the interconnected pipeline. The problem provides a new idea: a group of auxiliary interconnection pipes can be designed. The length of this group of interconnection pipes is longer and the inner diameter is smaller. When the air spring is connected with this group of interconnection pipes, it can only play a part of the interconnection effect, that is, the driving The ride comfort is slightly improved, and the handling stability is slightly decreased

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