The Increasing Numbers of Transmission Gears

“What is the first transmission in the automotive history?” It is difficult to trace, but admittedly, the early transmission originated from the late 19th century and manufactured by Frenchman. The gear-shaped car brand of Citroen is a testament to the talent Frenchman in the transmission aspects. A transmission which is able to meet the basic driving demands at least has forward gears and reverse gear, it can be regarded as one gear. In 1908, the Ford Model T began to largely use an automatic transmission with two speed ratios, it could be called two-shift transmission. This gave a modern transmission laid a technical tone.

Since then, there is no big change in the structure of automatic car transmission, but with the advances in material technology and improvement of the performance of lubricating oil, so that the speed ratio has become various, three-gear or four-gear transmission occurs constantly and updates the new record, until now, it already has a production of eight-gear automatic transmission, as well as a seven-gear manual transmission. While the transmissions used in engineering vehicles and truck even as much as 16 gears.