关键词: 支柱三连杆悬架；集成多连杆悬架；侧倾中心；纵倾中心；侧倾俯仰；纵向冲击

Abstract: In order to reduce the complaints from customers, including small volume of luggage compartment, large pitch angle in straight braking, large roll angle in a bend, strong longitudinal impact and impact after-shake of rear axle, the chassis architecture was newly developed and the rear axle was upgraded from the strut type three link suspension to the integral multi-link suspension. A comprehensive comparison of these two suspensions was performed on the structural level, kinematics and compliance performance level and vehicle performance level. Study shows that the objective of reducing the above customer complaints is achieved on the vehicle level by optimizing the roll center height, anti-dive angle, wheel recession and longitudinal compliance in the new integral multi-link suspension.

Key words: Strut type three link suspension; Integral multi-link suspension; Roll center; Pitch pole; Roll and pitch; Longitudinal impact