Parameter Optimization of Differential Gear for Electric Vehicles

Abstract:
Electric vehicles have attracted more and more attention, among which lightweight is the focus of researchers. Aiming to reduce the weight of electric vehicle differential, based on the conventional design method of differential gears, this paper puts forward an optimization method with the minimum volume of differential and the minimum pressure per unit tooth length as the objective function, establishes the design variables and constraint functions. Compared with the standard size of Gleason’s Revacycle series bevel gears, the feasibility of the optimization method is proved, and the optimization design is carried out by taking a heavy-duty electric truck as an example. By comparing the objective function values, the optimized gear parameters are obviously better than those before optimization. This optimization method can provide a reference for the design and development of differential.