The Passenger Car Chassis Upgraded Based on Independent Suspension

Abstract

Suspension is one of the important assemblies about modern vehicle, which puts frame and axle join up elastic flexibly. Its main task is to transfer function of all the force and moment between the wheel and frame, and alleviate the impact load which transfers to frame from uneven pavement, all of which is to ensure the normal operation of vehicle. And adopting independent suspension can reduce the spring load part weight greatly, reduced vibration load, and so improved vehicle running smoothness. Before, the use of passenger car suspension generally adopts a dependent suspension. As people pay attention to ride comfort, control stability, running smoothness, the original suspension system already cannot satisfy the requirement of people. Passenger car (Chengdu) company devotes to improve passenger car quality and increase passenger car products market share. Now this paper is upgrading chassis of CDL6606 model, changes the original plate spring suspension into that the front suspension adopts double wishbone independent suspension and the rear suspension uses few leaf springs.