摘要
为了提高工程车辆的传动效率,从液力变矩器和变速器在车辆传动系统中的作用出发,推导出了利用变速器换挡来控制液力变矩器在高效区工作的变速器升降挡规律公式,并在此基础上得到了工程车辆自动变速器的节能换挡规律。该换挡规律可以将变矩器在变速器最低挡的左端低效区和最高挡的右端低效区除外的所有工况下的效率限定在某一理想的范围内。并在自动变速试验台上进行了台架试验,验证了其正确性。该换挡规律的提出,对提高工程车辆液力机械传动系统的传动效率、节约能源,具有十分重要的理论意义和应用价值。
In order to improve engineering vehicular efficiency, the expression of shift schedule is deduced from the function of torque converter and transmission in vehicular powertrain, and shift schedule saving energy of engineering vehicular automatic transmission is obtained. The shift schedule can maintain torque converter working in the range of a limited idealized value under all the working condition except the left low efficiency range when transmission worked in the lowest shift and the right low efficiency range when transmission worked in the highest shift. The bench-test of automatic shift adopting this shift schedule is done on automatic transmission's test-bed. The experimental results show the shift schedule is correct. This shift schedule will improve the efficiency of hydrodynamic drive system of the vehicle.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2004年第3期84-87,共4页
Journal of Mechanical Engineering
基金
国家自然科学基金(59705005)
关键词
工程车辆
液力机械传动系统
自动变速器
换挡规律
节能
Engineering vehicle Hydrodynamic drive Automatic transmission Shift schedule Saving energy
