毕业设计-汽车制动性评价方法的研究.doc

本科毕业设计（论文） 汽车性评价方法的研究THE RESEARH OF THE APPRAISING INDEX OF AUTOMOTIVE BRAKING PROPERTIES 摘 要 汽车性是指。Abstract Automobile braking means the car is moving within a short distance when parking and to maintain directional stability and downhill ability to maintain a certain speed. Vehicle braking performance is one of the main car. Braking performance is directly related to traffic safety, major accidents and the braking distance is often too long, the emergency brake is spun, etc. related to braking of the car so a car traveling on an important guarantee for the security. In this paper, the car brake in a variety of methods of assessment and evaluation indicators, introduced the evaluation of key indicators brake: Brake performance is braking distance and braking deceleration; brake performance constant, ie thermal performance through a recession; braking vehicle directional stability, that deviation does not occur when braking car, skid and loss of steering ability of performance. This paper analyzes a number of countries in China and abroad, brake evaluation test method. Evaluation on Chinas current method of braking a single initial velocity, determined the road test, the target area and the limited value of three indicators such as the lack of cross-analysis. The existing countries on the basis of evaluation methods, propose a new evaluation method. As the use of different models different, so first determine the different models of brake conditions, including conditions and road speed conditions, the same, braking performance, vehicle stability and braking performance of directional stability when braking Evaluation