High-and-low pressure chamber closed-loop gas path electronic controlled air suspension system

Abstract

The invention discloses a high-and-low pressure chamber closed-loop gas path electronic controlled air suspension system, comprising solenoid valves, an air compressor, a high pressure chamber, a low pressure chamber, air springs, pressure sensors, height sensors, an EUC (electronic control unit) and a connecting line. As the low pressure chamber is added, the gas path closed-loop air suspension system is formed. Thus, compressed gas discharged by the air springs can be recycled; energy loss in the process of gas release is avoided; and the body height adjustment performance in the processes of filling and release can be improved. Through the implementation of a control strategy of the EUC of the system, pressure of the high pressure chamber and pressure of the low pressure chamber can be maintained always within the range of preset values. In this way, the energy loss of the system can be reduced, and the body height adjustment performance can be improved. Due to the implementation of the control strategy of the system, the processes of gas filling, gas release and pressure rising cannot be performed simultaneously, and thus the loss of gas is also reduced.

Description

technical field [0001] The invention relates to a closed-loop air circuit air suspension system, in particular to an electronically controlled air suspension system with closed-loop air circuit in high and low pressure chambers. Background technique [0002] With the improvement of people's living standards, on the one hand, cars are required to have better driving comfort, ride comfort and operational stability. On the other hand, due to the increasing scarcity of natural resources, the future development of the automotive industry must also consider energy-saving factors , the maximum energy saving will inevitably become the goal pursued by automobile production in the future. [0003] At present, domestic and foreign scholars mainly focus on the open-loop air suspension system. With the increasing shortage of international energy, the energy saving of automobiles has become an important topic that everyone pays attention to. A few scholars in the world have proposed this...

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Problems solved by technology

[0007] The above patents all involve the energy-saving factors of the closed-loop air suspension system, but none of them specifically designed the impact on the height adjustment of the vehicle body, nor did they mention that the energy loss of the system can be further reduced due to the implementation of the control strategy; and the closed-loop air circuit The system structure is complex and can be further simplified

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