中国机械工程2011，Vol.22Issue(24)：3001-3005,3022,6.
双状态无级变速传动系统整体效率优化
Overall Efficiency Optimization of Duel-state Continuously Variable Transmission
摘要
Abstract
Aimming at highest efficiency of CVT,an optimization algorithm was designed by considering the efficiency of engine and the main dissipation component of CVT.Duel-state hydraulic torque converter（TC） was also included in the algorithm.Control strategy based on power demands was designed in order to realize higher efficiency of the whole system.The highest efficiency operating conditions which satisfied the power demands were set to be the control objective.As a result, the best economical efficiency is available.While the power demands exceed the maximum output power under the current vehicle speed,the maximum output power conditions were set to be the control objective,and then the best dynamic performance is available. TC ideal control line was calculated,based on which a practice operating line was designed.The results of simulation show that by adopting the designed optimal strategy,fuel consumption decreases nearly 3%,TC lock time reduces 11% in start-acceleration,and the maximum output power increases 2.3%.关键词
车辆/无级变速传动/控制/效率Key words
vehicle/continuously variable transmission（CVT）/control/efficiency分类
交通工程引用本文复制引用
郝允志,孙冬野,秦大同,尹燕莉..双状态无级变速传动系统整体效率优化[J].中国机械工程,2011,22(24):3001-3005,3022,6.基金项目
国家自然科学基金资助项目（51075410) （）
重庆市科技攻关计划资助项目（2010AC6049) （）
