Why Does a Continuously Variable Transmission Have No Gears?
3 Answers
Continuously variable transmissions (CVT) do not have gears. CVT stands for Continuously Variable Transmission, which, as the name suggests, does not have specific gear ratios. Function of CVT: CVT refers to a transmission system that can continuously obtain any transmission ratio within the speed range. Through CVT, the optimal match between the drivetrain and engine conditions can be achieved. Common types of CVTs include hydraulic mechanical CVTs, metal belt CVTs (VDT-CVT), and variable inclined plane CVTs. Principle of CVT: It involves two adjustable-diameter pulleys connected by a transmission belt. The belt is wrapped around conical pulleys, and the outer diameter of the pulleys is continuously varied by hydraulic pressure. CVT technology uses a belt and variable-diameter primary and secondary pulleys to transmit power, enabling continuous changes in the transmission ratio and achieving a better match between the drivetrain and engine conditions.
To be honest, the lack of gears in a CVT is primarily a design innovation. It continuously changes gear ratios through a pulley and steel belt system, unlike traditional transmissions that rely on fixed gears for shifting. I've driven this type of car, and the acceleration feels incredibly smooth with no jerking, because the engine can maintain optimal RPM, significantly improving fuel efficiency. This technology originated from addressing the hassle of manual transmissions and the fuel waste of automatic ones. Many Japanese cars now use it to enhance driving comfort. Although some complain about the lack of shifting excitement, daily commuting is much more worry-free, especially in traffic jams where frequent gear changes aren't needed, leading to noticeable fuel savings. In the long run, maintenance costs are also lower, with fewer parts resulting in lower failure rates. Personally, I think this reflects the progress of automotive engineering, meeting modern demands for efficiency and comfort. If you've tried a CVT car, you might fall in love with its smooth driving experience.
As an average car owner, let me explain why CVT (Continuously Variable Transmission) has no gears: It all comes down to its unique continuous shifting system, using components like a pair of pulleys connected by a steel belt that automatically adjusts gear ratios based on speed. This eliminates the traditional gear-shifting sensation, delivering fluid acceleration, improved fuel efficiency, and eco-friendliness. Driving my Honda CVT, I find city traffic much less stressful without worrying about gearshift jolts, saving me around $100 monthly on fuel. Early CVTs occasionally had noise issues due to steel belt limitations, but current models offer refined smoothness and reliability. The simplified design reduces gearset wear risks and eases maintenance. A minor drawback might be slightly less vigorous power during hill climbs, though it's perfectly adequate for urban commutes. Ultimately, CVT was born from practical needs—making driving effortless and efficient, ideally suited for busy lifestyles.
