What do large CVT and small CVT mean?
2 Answers
They refer to large and small transmissions. Here are the specific details: 1. Transmission: CVT stands for a type of automotive transmission, also known as a continuously variable transmission. CVT (Continuously Variable Transmission), directly translated, means continuous variable transmission, which is a stepless gearbox. As the name suggests, it does not have specific fixed gears. In operation, it is similar to an automatic transmission, but the change in speed ratio differs from the gear-shifting process of an automatic transmission; instead, it is continuous, ensuring smooth and uninterrupted power delivery. 2. System Composition: This system mainly includes the driving pulley set, driven pulley set, metal belt, and hydraulic pump, among other basic components. The metal belt consists of two metal rings and hundreds of metal pieces. Both the driving pulley set and the driven pulley set are composed of movable discs and fixed discs. The side of the pulley close to the cylinder can slide on the shaft, while the other side is fixed. Both the movable and fixed discs have a conical structure, forming V-shaped grooves that mesh with the V-shaped metal transmission belt. The power output from the engine's output shaft is first transmitted to the driving pulley of the CVT, then through the V-shaped transmission belt to the driven pulley, and finally to the wheels via the reducer and differential to drive the car. During operation, the axial movement of the movable discs of the driving and driven pulleys changes the working radius where the conical surfaces of the driving and driven pulleys mesh with the V-shaped transmission belt, thereby altering the transmission ratio. The axial movement of the movable discs is controlled by the driver through the system, adjusting the hydraulic pressure in the cylinders of the driving and driven pulleys as needed. Since the working radii of the driving and driven pulleys can be continuously adjusted, stepless speed variation is achieved.
Actually, it's just a colloquial term for a car mechanic. Large CVTs generally refer to transmissions installed in vehicles with large displacement and heavy bodies, such as those above 2.0 liters or used in SUVs. They are powerful and can withstand stronger engine output, making them less prone to slipping at high speeds. Small CVTs are usually installed in economical compact cars like 1.5-liter or 1.6-liter models, which are very fuel-efficient and particularly suitable for stop-and-go city driving conditions. However, if you frequently floor the accelerator or drive fully loaded up hills, they are prone to overheating warnings and have a shorter lifespan. When choosing a car, you need to consider your driving habits.
