Commercial vehicle self-adaptive air suspension system and control method

Abstract

The invention relates to a commercial vehicle self-adaptive air suspension system and a control method. The system comprises a front axle left air bag, a front axle right air bag, a first electromagnetic valve, a drive axle left air bag, a drive axle right air bag, a second electromagnetic valve, a follow-up axle left air bag, a follow-up axle right air bag, a lifting axle air bag and a third electromagnetic valve. A vehicle sensor acquisition signal and a cab switching signal are received through an ECU control unit, thus analyzing the real-time data of the whole vehicle and judging the driving condition of the current vehicle; a target height decision is made to control the electromagnetic valve to inflate and deflate the air bag so as to achieve an optimum driving state. The suspensionsystem has the advantages that the basic requirements of a user for driving smoothness and riding comfort can be met, compared with a traditional suspension system, the disclosed suspension system hasbetter driving performance and energy conservation and emission reduction performance, meanwhile, the self-adaptive adjusting capacity can reduce frequent operation of a driver, and therefore the suspension system is more convenient to use and more comfortable.

Description

technical field [0001] The invention relates to an automobile suspension system, in particular to an adaptive air suspension system and a control method for a commercial vehicle. Background technique [0002] With the rapid development of automotive electronic technology and the continuous improvement of people's living standards, the operational stability and ride comfort of automotive suspension systems have been paid more and more attention. Traditional cars usually use leaf spring suspension, and the operational stability and ride comfort of this suspension structure are often mutually exclusive and cannot be satisfied at the same time, even if optimized, it is difficult to achieve the desired effect. In order to solve this problem, an intelligent electronically controlled suspension system came into being, which greatly improved the performance of the car. Electronically controlled suspension system, which adjusts the stiffness and damping force of the suspension throu...

AI Technical Summary

Problems solved by technology

[0004] The main function of the air suspension control system currently on the market is the manual control function. The driver makes a judgment based on the actual driving conditions, and the controller receives the cab switch control signal to adjust the height of the vehicle chassis. This existing control The method is greatly affected by the subjective factors of the driver, and cannot accurately and timely respond to various working conditions; as for the automatic adjustment ability, most of them are limited to adjusting the height of the vehicle with the change of vehicle speed, and the ability to recognize the current driving condition of the vehicle Not strong enough to make accurate and comprehensive judgments and actively adapt to real-time working conditions

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