汽车变速器传动效率的建模与仿真

摘要

根据变速器实际传动效率随转速、负荷、油温、流体特性等变化的状况，提出一个综合考虑以上因素的变速器传动效率数学模型。相对于传动效率采用固定值的计算，采用所提出模型的计算结果更加精确，为预测变速器功率损失和进行车辆动力总成选型提供依据。%According to the situation that actual transmission efficiency varies with the speed and load of engine, and the properties and temperature of oil and fluid etc, a mathematical model for transmission efficiency is presented with comprehensive consideration of above mentioned factors. Compared with the traditional calculation u-sing constant value of parameters, the results with the model proposed are more accurate, providing a technical basis for the prediction of transmission power loss and the selection of vehicle powertrain.