What does CVT transmission mean?
2 Answers
CVT transmission refers to a type of automotive transmission, also known as a continuously variable transmission. The difference between a CVT and a stepped transmission is that its gear ratio is not a discontinuous point but a series of continuous values, thereby achieving excellent fuel economy, power performance, and smooth driving experience, while also reducing emissions. In a CVT transmission system, traditional gears are replaced by a pair of pulleys and a steel belt. Each pulley is actually a V-shaped structure composed of two conical discs. The engine shaft connects to the smaller pulley, which drives the larger pulley through the steel belt. Theoretically, a CVT transmission system can have an infinite number of gear ratios, allowing for more flexible gear settings. It is easier to achieve a balance between gear ratios, speed ratios, performance, fuel consumption, and exhaust emissions compared to traditional transmission systems.
CVT stands for Continuously Variable Transmission, which sounds complicated but is actually quite simple to use. I found that it uses a belt to connect two conical pulleys to vary the gear ratio, instead of fixed gear positions, so acceleration is exceptionally smooth while driving, with no gear-shifting impact at all. Many Japanese cars like the Nissan Sylphy use this system, and the fuel-saving advantage is quite obvious—a full tank can last dozens of kilometers longer for city commuting. However, some complain about the monotonous engine sound and a slight delay in throttle response, like a buzzing rubber band spinning. For those who enjoy driving excitement, it might not be thrilling enough, especially during high-speed overtaking when the power delivery isn’t as direct. Maintenance is also something to watch out for, as replacing the worn belt can be costly.
