The concept of continuously variable transmission was put forward by Leonardo da Vinci more than 500 years ago. CVT will replace planetary gear automatic transmission in some cars.
Since 1886 applied for the patent of the first continuously variable transmission, this technology has been improved and improved. Three automakers (including General Motors, Audi, Honda and Nissan) are designing power transmission systems around CVT.
The continuously variable transmission is different from the traditional automatic transmission. It has no gearbox consisting of a group of gears, that is, it has no interlocking gears. The most common type of CVT can run on a well-designed pulley system, which can provide infinite variability between the highest gear and the lowest gear without discontinuous steps or gear shifting.
history
As early as 1958, a Dutchman (Mr. Van Dorne, founder of DAF) opened the prelude to the practical application of CVT. The first CVT was installed in a car with only 600cc.
Later, although the practical CVT has appeared for many years, it has been used only on a small scale because of its low efficiency, high noise and low applicable power, and it has not been elegant. However, major automobile manufacturers show great enthusiasm for CVT, attach great importance to the practical process of CVT, and gradually use it in some high-end cars.