What does Continuously Variable Transmission (CVT) mean?

[DiAnthony]

Continuously Variable Transmission (CVT) utilizes only two sets of pulleys for gear shifting. It achieves speed variation by altering the contact radius of the drive belt between the driving pulley and the driven pulley. Advantages and disadvantages of CVT: 1. Advantages: Excellent fuel economy, simple and convenient operation, high comfort level, smooth connection, high transmission efficiency, and a wide working speed ratio range. 2. Disadvantages: Low transmission efficiency and limited torque conversion range, although the introduction of electronic control technology in recent years has improved these issues. Complex structure and difficult to repair. Classification of CVT: 1. Variable-angle CVT. 2. CVT (Continuously Variable Transmission).

[LeOlive]

A CVT (Continuously Variable Transmission) is a type of automatic transmission without fixed gears. To put it simply, it uses two conical pulleys and a belt or chain to change gears. The pulleys can widen or narrow, allowing the gear ratio to change continuously, unlike conventional automatic transmissions that have noticeable gear shifts. When driving, it feels exceptionally smooth, especially in city traffic—acceleration is as natural as flowing water, without the jerky sensation of traditional transmissions. This is because the engine always stays within its most efficient RPM range, unlike conventional transmissions that require frequent shifting. Although its simple structure makes maintenance relatively easy, the belt may wear out over time, leading to slight slippage. However, automakers have improved durability by using chains instead. I recommend beginners try it—it’s easy to handle and can help save about 10% on fuel. The only downside is that the engine sound might feel monotonous during high-speed acceleration. Overall, it’s a great choice for modern cars pursuing smoothness and fuel efficiency.

[LeGrant]

To explain CVT (Continuously Variable Transmission), I think it's more straightforward from a daily driving perspective. It makes your drive as smooth as an electric scooter, with no gear-shifting sensation, and the engine RPM changes more gently. When I use this transmission on my commute, the start is particularly smooth without sudden jerks, and in traffic jams, my foot doesn't need to frequently press the gas or shift gears, making my ankle much more comfortable. The key is fuel efficiency – it allows for more mileage in city driving, saving a significant amount on fuel costs in the long run. However, it does have a quirk: the constant humming sound during acceleration, unlike the punchy feel of traditional transmissions. A few of my friends who enjoy racing don't prefer it much, but it's quite suitable for family cars or urban commuting. Maintenance-wise, it's less hassle than dual-clutch transmissions, but the transmission fluid needs to be changed more frequently. If you're concerned about jerky discomfort, a CVT is a good investment, and now many Japanese cars like Toyota widely use it.

[Cassandra]

A continuously variable transmission (CVT) is a seamless gear-shifting system that smoothly adjusts engine output, making driving more fuel-efficient. When learning about automotive knowledge, I noticed its core mechanism replaces gears with pulley sets, eliminating fixed gear ratios, which can save around 15% fuel in city driving—ideal for budget-conscious drivers. Its relatively simple structure reduces daily maintenance hassles, though long-term belt wear may require costly replacements. For economy car owners, this transmission offers great value whether buying new or used. It provides jerk-free acceleration that prevents motion sickness in children, though its slightly delayed response during highway overtaking requires getting accustomed to its rhythm. Ultimately, choosing it depends on individual needs, prioritizing fuel efficiency.