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What is the principle of continuously variable transmission?

1 Answers

DelParker

07/30/25 12:58am

The principle of continuously variable transmission: It uses two transmission pulleys with variable diameters and a transmission belt in between to transmit power. The two ends of the belt are wound around conical pulleys, and the outer diameter of the pulleys is continuously varied by hydraulic pressure. CVT technology employs a transmission belt working with variable-diameter driving and driven pulleys to transmit power, enabling continuous changes in the transmission ratio. This achieves optimal matching between the transmission system and engine conditions. The difference between CVT and stepped transmissions lies in the fact that its transmission ratio is not discrete points but a series of continuous values. The CVT structure is simpler than traditional transmissions, with a more compact size. It neither has the multiple gear pairs of manual transmissions nor the complex planetary gear sets of automatic transmissions. It mainly relies on the driving pulley, driven pulley, and metal belt to achieve stepless variation of the speed ratio.

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