automobile engine magnetorheological mount

 

 

 

PAN Gongyu, WANG Qianqian, YANG Xin

 

(School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China)

 

 

Abstract: Aiming at the vibration isolation problems of engine mount in idle condition, a new type of magnetorheological semiactive mount with multiple inertia tracks was designed based on the existing magnetorheological mount and the rheological properties of magnetorheological fluid. According to the mount, the mechanical model was established. The expression of the dynamic stiffness and damping lag angle was deduced, then the dynamic characteristics was simulated in the simulation software. At the same time, the correctness of the model of the mount with a single inertia track was verified through experiments.The twodegreesof freedom model was established and simulation model was established in Matlab/Simulink. Then the isolation performance of the magnetorheological engine mount was simulated by PID control method. The results indicate that magnetorheological semiactive mount had better performance of vibration isolation under PID control, and it can improve vehicle ride comfort.

 

Key words: magnetorheological fluid; semiactive mount; dynamic characteristics; mount experiment; PID control