What does the CVT continuously variable transmission on a sedan refer to?
1 Answers
CVT continuously variable transmission does not have specific gears. In operation, it is similar to an automatic transmission, but the variation in speed ratio differs from the gear-shifting process of an automatic transmission. Instead, it is continuous, ensuring smooth and uninterrupted power delivery. Below are some relevant details: 1. In a CVT transmission system, traditional gears are replaced by a pair of pulleys and a steel belt. Each pulley is actually a V-shaped structure composed of two conical discs. The engine shaft connects to the small pulley, which drives the large pulley through the steel belt. 2. The secret lies in the special pulley: The construction of the CVT's transmission pulley is quite unique, divided into movable left and right halves that can move closer together or apart. The conical discs can tighten or loosen under hydraulic pressure, squeezing the steel belt to adjust the width of the V-shaped groove. When the conical discs move inward and tighten, the steel belt is pushed outward (centrifugally) by the pressure of the discs. Conversely, it moves inward when the discs loosen.