Cars with Continuously Variable Transmission
What is a Continuously Variable Transmission (CVT)?
A Continuously Variable Transmission (CVT) is a type of automatic transmission that uses a belt or chain to transfer power from the engine to the wheels. Unlike traditional automatic transmissions, which have a set number of gears, CVTs can change gear ratios smoothly and continuously, resulting in a more fuel-efficient and smoother driving experience.
How does a CVT work?
CVTs use a primary pulley and a secondary pulley that are connected by a belt or chain. The primary pulley is connected to the engine, and the secondary pulley is connected to the wheels. As the engine speed changes, the pulleys move closer together or farther apart, changing the gear ratio and the speed of the wheels.
The CVT also uses a torque converter to help smooth out the transition between different gear ratios. The torque converter is a fluid-filled device that transfers power from the engine to the transmission. When the engine speed is high, the torque converter locks up, which increases efficiency and reduces slipping.
Advantages of CVTs
- Fuel efficiency: CVTs are more fuel-efficient than traditional automatic transmissions because they can change gear ratios smoothly and continuously, which reduces engine speed and fuel consumption.
- Smooth driving experience: CVTs provide a smoother driving experience than traditional automatic transmissions because there are no gear shifts, which can cause jerks and vibrations.
- Compact size: CVTs are more compact than traditional automatic transmissions, which can free up space under the hood for other components.
Disadvantages of CVTs
- Less power: CVTs can transmit less power than traditional automatic transmissions, which can make them less suitable for high-performance vehicles.
- Shuddering: CVTs can sometimes experience shuddering, which is a vibration that can be felt in the vehicle. This can be caused by a variety of factors, including worn belts or pulleys.
- Cost: CVTs can be more expensive than traditional automatic transmissions.
Cars with CVTs
CVTs are becoming increasingly common in new cars, especially in fuel-efficient vehicles. Some of the cars that offer CVTs include:
- Honda Civic
- Toyota Corolla
- Nissan Sentra
- Subaru Impreza
- Mazda CX-5
Conclusion
CVTs offer a number of advantages over traditional automatic transmissions, including improved fuel efficiency, smoother driving experience, and compact size. However, they can also be more expensive and less powerful. Ultimately, the decision of whether or not to buy a car with a CVT depends on your individual needs and preferences.
