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| Influences of two types of biases from manufacture／installation on directional stability of high speed vehicle |
| 1.School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.Higer Bus Company Limited, Suzhou, Jiangsu 215026, China) |
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Abstract To improve the directional stability of high speed vehicle, the working principle of vehicle deviation and influences on vehicle directional stability caused by two types of biases from manufacture／installation are investigated. The two types of biases include the unequal of left and right wheelbases and the misalignment of midpoint connection line of front and rear axles with longitudinal axis of body. The dynamic model of vehicle deviation caused by the two types of biases from manufacture／installation is established. Influences of the two types of biases from manufacture／installation on directional stability of high speed vehicle are analyzed quantitatively through numerical simulation. The analysis results show that influence of the unequal of left and right wheelbases on directional stability of high speed vehicle is greater than the latter, so the unequal of left and right wheelbases is one of main factors causing vehicle deviation. The influence of the bias between midpoint connection line of front and rear axles and longitudinal axis of body in front axle is greater than that in rear axle.
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2011, Vol. 32 
