关键词: 三连杆整体桥；减振器；Isight；偏摆角；灵敏度

Abstract: This paper discusses the basic structure of three-link integral bridge suspension and its advantages in short wheelbase new energy vehicle, compares the difference of shock absorber layout form of three-link integral bridge suspension of transmission oil vehicle and new energy vehicle, analyzes the cause of the bushing yaw angle is too large when the shock absorber of a new energy vehicle is loaded with roll and single side deep pit. In this paper, Adams/Car is integrated with Isight software to carry out sensitivity analysis on the yaw angle of shock absorber bushing. According to the analysis results, the suspension hard point which is the most sensitive to the yaw angle of shock absorber bushing is found, and the optimization method of the yaw angle of shock absorber bushing is found based on the vehicle performance, spatial layout and structural design, so as to eliminate the risk of shock absorber oil leakage. It provides reference for the design and development of new energy vehicle three-link integral bridge rear suspension.

Key words: Three-link integral bridge; Shock absorber; Isight; Yaw angle; The sensitivity