What is the working principle of automotive continuously variable transmission?
2 Answers
The following is the working principle of a continuously variable transmission: 1. The power output from the engine's output shaft is first transmitted to the driving pulley of the CVT, then conveyed via the V-shaped belt to the driven pulley, and finally delivered to the wheels through the reducer and differential to drive the vehicle; 2. During operation, the movable discs of the driving and driven pulleys move axially to alter the working radius where the conical surfaces of these pulleys engage with the V-shaped belt. The axial displacement of the movable discs is controlled by the driver through adjusting the hydraulic cylinder pressure of the driving and driven pulleys via the control system as needed; 3. Since the working radii of the driving and driven pulleys can be continuously adjusted, this enables seamless gear shifting, achieving continuously variable transmission.
The working principle of car CVT is really cool! Simply put, it doesn't use fixed gears, but continuously adjusts the gear ratio through a pair of conical pulleys and a steel belt. When you're driving, the diameter of the engine's pulley automatically changes based on speed and load, causing the steel belt to slide between the input and output pulleys, seamlessly altering the rotation speed and keeping the engine running efficiently. The driving experience is super smooth, without the jerky feeling of traditional automatic transmissions, offering fluid acceleration and better fuel efficiency. However, note that the steel belt and pulleys are prone to wear, and prolonged aggressive driving may cause overheating, so regular transmission fluid changes are crucial—it's best not to neglect maintenance.
