摘要
液力自动变速器(Automatic Transmission,简称AT)在自动变速器市场中占有最重要的位置,AT向高档位发展的趋势越来越明显。高档位自动变速器可以更好地改善汽车的各方面性能,具有档间速比分配更加细密、速比范围更大。
Automatic Transmission （AT for short）has an important position in the automatic transmission market, the trend of the high gear AT is more obvious. The high gear AT can improve all aspects of vehiele performance better, because of its greater scope of gear ratio and more detailed ratio between the gear ratio distribution.
