What are the types of automatics in cars nowadays?

The main types of automobile automatic transmission (AT) and its current use AT has the following forms:

1. Hydrodynamic Mechanical AT-HMT (Hydrodynamic Mechanical Transmission) is widely used in sedans, public **** automobiles, heavy vehicles, commercial vehicles and engineering vehicles, it is currently the mainstream of AT.

2. Mechanical AT-AMT (Automated Mechanical Transmission) in the usual mechanical transmission on the basis of microcomputer-controlled electro-hydraulic servo manipulation of the automatic gearshift mechanism composed of the current it is applied to some of the low-grade cars and local trucks and commercial vehicles.

3. Continuously Variable AT-CVT (Continuously Variable Transmission) has the following forms: mechanical: there are many forms, the main one is the push block metal V-belt transmission, has begun to batch trial. Hydraulic transmission type (HST hydrostatic transmission): in engineering vehicles and agricultural machinery has been applied.

Although Honda has recently developed a pump and motor made into a single hydraulic and mechanical dual-flow transmission of the AT, used in miniature utility vehicles, but there are speed limitations, efficiency, noise, weight and size and other issues, basically no application in the car. Electric power type: used in electric vehicles (EV electric vehicle).

Extended information:

There are two main forms of automatic transmissions used in automobiles. One is a step-wise automatic transmission and the other is a continuously variable automatic transmission (CVT). The most commonly used in cars is the mechanical CVT, which utilizes a V-shaped metal drive belt or chain to transfer torque in the V-shaped grooves of the active and passive working wheels. This type of transmission is usually used in smaller vehicles.

Reference:

Baidu Encyclopedia-Automatic Cars