整车不足转向特性影响因素研究

Study on the influence factors of understeer characteristics of vehicles

文章分析了悬架K&C特性、轮胎力学特性对车辆不足转向特性的影响,其中悬架侧倾转向、侧向力转向、回正力矩转向及轮胎侧偏刚度对整车不足转向特性有重要贡献,而轮胎垂向载荷及复合工况下纵向滑移率则对轮胎侧偏刚度有明显影响,进而改变整车不足转向特性,为底盘开发提供了重要的理论依据。

This paper analyzes the influence of suspension K&C characteristics and tire mechanical characteristics on the understeer characteristics of the vehicle,in which the suspension roll steer,lateral force steer,aligning moment steer and tire cornering stiffness make an important contribution to the understeer characteristics of the vehicle,while the tire vertical load and longitudinal force under compound conditions have an obvious impact on the tire cornering stiffness,thus changing the understeer characteristics of the vehicle.