Is CVT or AT More Durable?

[August]

AT transmissions are generally more durable than CVT transmissions. The differences between AT and CVT are as follows: 1. Principle: AT operates by using a torque converter whose automatic torque conversion range is limited. Therefore, multiple planetary gear sets are connected in series behind the turbine to improve efficiency. The hydraulic control system automatically operates the planetary gears according to changes in engine operation, achieving automatic torque conversion. The construction of CVT's transmission pulley is quite unique, consisting of 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 to tighten, the steel belt is pushed outward from the center by the discs, and vice versa. This changes the diameter of the disc driven by the steel belt, altering the gear ratio. 2. Usage: AT does not require a clutch for shifting, has fewer gears with significant changes, and provides smooth connections, making it easy to operate. This not only offers convenience to the driver but also ensures comfort for passengers. CVT lacks the transmission gears found in conventional automatic transmissions, eliminating the shifting process and the associated jerky sensation. As a result, CVT transmissions deliver linear power output, providing an exceptionally smooth driving experience.