Dynamic Temperature Rise Investigation of Frictional Pairs for Dual Clutch Transmission During Crawling Process
As one of the most essential elements of Dual Clutch Transmission vehicle, the wet clutch plays a crucial role during the vehicle operating processes. In this investigation, concerning the thermal problem of frictional pairs, a co-simulation model, including the powertrain dynamic model and lumped heat transfer model, is established to study the dynamic response of vehicle and predict the temperature variations during the DCT crawling process. From the obtained simulation results, the desired vehicle speed(2 km/h)can be tracked and achieved successfully, with acceptable jerk level(6. 1 m/s3).And, during the crawling process, both clutches are involved and the slipping duration for clutch CL and clutch CH in one cycle is 5s and 2. 8s respectively. Consequently, with well-ar- ranged slipping time, two clutches obtain a same temperature rise, which is 8. 8℃. From the simulation results, the temperature of clutches reaches the critical value(250℃)after crawling for 221. 6s.
dual clutch transmission powertrain crawling process lumped heat transfer temperature rise
Liu Jikai Ma Biao Li Heyan Li Huizhu Zhao Jiaxin
Beijing Institute of Technology;University of California, Berkeley, USA Beijing Institute of Technology;Collaborative Innovation Center of Electric Vehicles in Beijing Beijing Institute of Technology University of Denver, USA
国内会议
上海
英文
719-727
2017-10-24（万方平台首次上网日期，不代表论文的发表时间）