双离合自动变速器产热与传热仿真建模及试验验证

为了预测双离合自动变速器在工作过程中各热源的产热量及元件的温度状况,基于热网络理论建立了变速器轴承受力计算、内部热源产热量计算及传热计算耦合仿真模型,并对变速器在稳态与瞬态工况下的产热与传热进行了仿真计算与试验验证。结果表明,在稳态工况下,变速器的总产热量仿真值与试验测试结果吻合较好,瞬态工况下的变化趋势与试验测试结果一致;各测试点温度在稳态与瞬态工况下的仿真值与试验测试结果均吻合较好,模型具有较高的计算精度。

Modeling and validation of power loss and heat transfer of a dual clutch transmission

In order to predict the heat generation of each heat source and the temperature distribution of components of a dual clutch transmission, a coupled model to simulate the bearing forces, power loss and heat transfer of the transmission was developed based on the theory of thermal network, and validated by comparing the simulation results of the total power loss and the temperature of some chosen tested points under steady and transient operation conditions with the experimental results. The results show that the numerical total power loss is in good agreement with the test results under steady operation condition, and the variation trend of the numerical results under transient condition is same as the test results; the numerical temperature of each tested point under steady and transient working conditions is in good agreement with the test results.