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目前,在汽车上广泛采用的变速器主要有有级式和无级式两大类。无级式变速器是指有无数个传动比的变速器,主要是利用链传动的原理来工作,因此,无级式变速器有时也称为链传动变速器,简称CVT。而有级式变速器是指有限个传动比(一般不超过7个)的变速器,分为手动变速器(MT)和自动变速器(AT)两种。手动变速器的传动效率高,但操作比较复杂,特别是在市区道路行车时,容易产生疲劳。而自动变速器操作简单,但传动效率比较低,因此,装有自动变
At present, the widely used transmission in the car mainly has two major categories and no class. Continuously variable transmission is a transmission with countless gear ratio, mainly using the principle of chain drive to work, therefore, CVT sometimes called chain transmission, referred to as CVT. The stepped transmission refers to a limited number of transmission ratio (usually not more than seven) transmission, divided into manual transmission (MT) and automatic transmission (AT) two. Manual transmission transmission efficiency, but the operation is more complex, especially in the urban road driving, prone to fatigue. The automatic transmission is simple, but the transmission efficiency is relatively low, therefore, equipped with automatic change