Papers by Keyword: Brake Dynamometer

Abstract: Two methods of inertia simulation, energy compensation method and torque control method, using work of electromotor during brake application are discussed in comparison in this paper. Mathematical models are described. Experiment under various brake conditions unfolds the rule of some key factors of energy compensation including working period of electromotor, start point and ending condition of compensation. Comparison experiment shows advantages of the energy compensation method over its counterpart. Limitations as well as corresponding solutions are discussed in the end.

Abstract: As the automobile industry develops, the demand for automobiles that provide more comfortable ride and safety is also increasing. In the conventional braking analysis, frictional heat generation is only related to wheel speed, friction material, and the interface pressure. However, under the dynamic braking conditions, the frictional heat causes the thermo-elastic distortion that leads to more concentrated distribution of contact pressure and hence more and more non-uniform temperature. This paper describes the thermo-elastic instability arising from friction heat generation in braking and proposes the finite element methods to predict the variation of temperature and thermal deformation.