What is the Principle of Continuously Variable Transmission?

[Elias]

The working principle of a continuously variable transmission (CVT) is to use a drive belt and a primary and secondary pulley with variable working diameters to transmit power, enabling continuous changes in the transmission ratio. This allows for optimal matching between the transmission system and the engine's operating conditions. CVT is a type of automatic transmission system that can continuously achieve any transmission ratio within its range. The main difference between a CVT and a conventional automatic transmission is that it eliminates the complex and bulky gear combination for speed variation, instead using only two sets of pulleys for transmission. By altering the contact radius of the drive belt between the driving and driven pulleys, the CVT achieves speed variation. Since the CVT can continuously adjust the transmission ratio, it ensures optimal matching between the transmission system and the engine's conditions, improving the vehicle's fuel economy and power performance, as well as enhancing the driver's ease of operation and passenger comfort. Therefore, it is an ideal automotive transmission device.