What types of automobile gearboxes are there?

At present, the most common automatic gearboxes on the market mainly include the following four types:

1, AT gearbox, scientific name hydraulic automatic gearbox, is an automatic gearbox that we contact most. From the 4AT gearbox that we came into contact with in the early days to the 9AT gearbox that some cars are equipped with now, the advantages of AT gearbox are obvious, the power is "more direct", and the disadvantages are also outstanding, and the frustration and fuel consumption during acceleration are relatively high.

2, CVT gearbox, the scientific name is mechanical stepless automatic gearbox, mainly represented by Japanese cars, Honda and Nissan and other models mostly use CVT gearbox. The characteristics of CVT gearbox are obvious. Because the transmission ratio is not a discontinuous point, but a series of continuous values, the ride comfort is good and the fuel economy is prominent, but the disadvantage is obvious, that is, the instantaneous output of power lacks an explosion point and is relatively flat.

3.AMT gearbox, the abbreviation of electronically controlled mechanical automatic gearbox, is a compromise product of MT gearbox and AT gearbox, which has the advantages of lower production cost and more convenient operation compared with manual gearbox. However, the disadvantages of AMT gearbox are more prominent, and it is easy to have a strong sense of frustration if it is not operated well, which greatly affects the comfort, and there are fewer models equipped with AMT gearbox on the market now.

4. Power shift is referred to as DCT. As the name implies, the dual clutch adopts two groups of clutches, which work alternately to achieve the effect of gapless shifting. It is divided into dry double clutch and wet double clutch. Powershift has fast shifting speed, low power loss and good fuel economy. The disadvantages of dual clutch gearbox are more obvious, and the stability of quality is a major disadvantage of dual clutch.