What is the difference between CVT continuously variable transmission and dual-clutch transmission?
2 Answers
CVT continuously variable transmission and dual-clutch transmission mainly differ in working principle, driving smoothness, and applicable vehicle models. The specific differences are as follows: Different working principles: The continuously variable transmission consists of two pairs of variable-diameter pulleys and a steel belt. One pulley is connected to the engine, and the other is connected to the drive wheels, linked by the steel belt. During operation, speed changes are achieved by altering the diameter of the pulleys. The dual-clutch transmission is composed of two sets of manual transmissions, with two clutches controlling the connection and disconnection of the two sets of gears to the engine. The dual-clutch can pre-engage the next gear to be shifted, so when shifting to that gear is needed, it only requires disengaging the originally engaged clutch while engaging the other clutch to complete the shift. Different driving smoothness: The dual-clutch transmission system combines two sets of gears, offering fast shift speeds and minimal power loss during transmission, but it suffers from severe jerking at low speeds. The continuously variable transmission's shifting mechanism consists of two conical pulleys and a steel belt, eliminating the shift process found in automatic transmissions, thereby removing shift jerking. As a result, the power output of the CVT is linear, providing a very smooth driving experience. Different applicable vehicle models: The dual-clutch transmission is primarily promoted by the Volkswagen Group and is divided into dry and wet types, mainly used in the European automotive market. The continuously variable transmission (CVT) has gradually developed with the promotion of Japanese cars and some independent brands, making it suitable for use in small-displacement and lighter-weight vehicles.
As an ordinary person who drives frequently, I've driven CVT (Continuously Variable Transmission) cars for a long time. Its biggest feature is the smooth gear shifting without fixed gear changes, feeling as natural as silk gliding. This sensation is particularly comfortable in traffic jams or low-speed driving, and the fuel consumption is relatively low. I remember my previous Toyota Corolla could maintain an average fuel consumption of around 6L. In contrast, dual-clutch transmissions use two clutches that alternate, providing ultra-fast gear shifts. Driving a Volkswagen Golf, the acceleration gives a strong push-back feeling, making it especially suitable for high-speed overtaking. However, dual-clutch transmissions might experience slight jerks in stop-and-go city traffic, especially the dry versions, requiring more frequent maintenance. Additionally, CVTs need a few minutes to warm up in winter to prevent slipping, while dual-clutch transmissions respond more agilely to high-torque engines. Overall, the choice depends on your driving habits: CVT for worry-free and fuel-efficient driving, and dual-clutch for sporty excitement.
