DRIVELINE DYNAMICS DESIGN FOR OPTIMIZED VEHCILE INTEGRATION

摘要

This paper presents a methodology that focuses on driveline system dynamics design for optimized vehicle system integration. The method requires well-established and validated computer simulation capabilities in accurately predicting gear mesh vibration and noise at driveline system level. By using FEA models, the dynamic gear mesh force and system vibration responses can be predicted and the scope of tuning opportunities for vehicle dynamics integration can be identified once it is known. The tuning of gear mesh dynamic force is achieved through driveline architecture design and optimization, particularly propshaft geometry, material and content optimization. The effectiveness of this method is also highly related to CAE capabilities of accurately predicting vehicle suspension dynamics to be able to impact the design at early program phase. An example of optimizing a driveline system to improve vehicle integration in a light duty pickup truck is presented. Further discussions on its benefits and limitations are given.