CVT is only used for passenger cars, not suitable for heavy duty vehicles due to its torque limit. It seems only Japanese are still keen on CVT. European and American OEMs are more in favor of DCT. The conventional automatic transmission uses hydraulic torque converter, so the operation is very smooth but the effeciency is lower compared with CVT and AMT because of the torque loss due to the fluid viscosity. The advantage of AMT is high effeciency, but the shift smoothness and NVH is less satisfactory than CVT and conventional torque converter.


【 在 Maranello (一春长费买花钱，日日醉湖边。) 的大作中提到: 】
: 传统手动变速箱就不用说了，在传统手动变速箱上面加一个代替人执行换档动作的机械，并由芯片控制，就是AMT，菲亚特在这方面技术比较先进，从低端的奇瑞到高端的法拉利上都有应用
: DCT据说是吧135档和246档的传动分成两个轴，使用两个离合器，消除换档中间的扭矩中断，具体是怎么回事，还要请专家来讲讲
: 传统的自动变速箱，一般就是行星齿轮变速箱，用油压控制换档。这个其实我也有个疑问，是不是所有传统自动变速箱和手自一体变速箱都是这种形式的？希望高手来回答。
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