关键词: 换挡执行机构, 传动效率, 定执行时间变负载, 变执行时间定负载

Abstract: Through the construction of the electric shifting actuator drive efficiency test bench,the average transmission efficiency of the electric shifting actuator is respectively tested in two working conditions of fixed time-variable load and variable time-constant load.Through the analysis of the experimental results of average efficiency of the worm transmission,the gear sector transmission and the whole transmission efficiency under two working conditions,found that the average transmission efficiency of worm transmission and overall transmission are low,and the gear sector of transmission efficiency is high;the torque has a great impact on the average transmission efficiency which increases with the torque increasing,but the speed has little effect on the average transmission efficiency.

Key words: shifting actuator, transmission efficiency, fixed time-variable load, variable time-constant load