Applied of hydraulic rubber isolator in the automobile vibration isolation system

LIAO Zhongwen1, WANG Hailin2

(1.Department of Mechanical and Electrical, Guangdong AIB Polytechnic College, Guangzhou 510507, China；
2.College of Engineering, South China Agriculture University, Guangzhou 510642, China)

Abstract: In order to solve the problems of the engine torque of noise and vibration road incentives of tire noise and other issues, so as to improve the Harshness (NVH) of vehicles (noise, vibration and harshness, noise, vibration and acoustic vibration roughness) performance, vibration isolation system was applied in automobile powertrain system and driving system. The vibration isolation system were investigated in structural differences，the platform of using simulation and mechanical analysis software (Analysis) was established. The performance characteristics of ordinary rubber vibration isolator and fluid resistance rubber vibration isolator has carried on the comparison and analysis, two common models were used for contrast test with vibration acceleration as the main control objectives. The results show that: hydraulic rubber isolator in the uneven road surface excitation of attenuation effect of torsional vibration of the steering wheel is superior to the general rubber isolator, two models of vibration acceleration peak value decreased by 62% and 28% respectively, better dynamic stiffness and damping features angle characteristics and vibration acceleration characteristics.

Key words: hydraulic rubber isolator; NVH; General rubber isolator