What is the Principle of Automatic Transmission?

[EdenMarie]

There are four types of automatic transmission principles, each described as follows: Hydraulic Automatic Transmission: It achieves automatic shifting through a combination of hydraulic transmission and planetary gears. Mechanical Continuously Variable Transmission (CVT): It transmits engine power via a steel belt and the grooves of two pulleys, from the primary pulley to the secondary pulley, and then through the main reducer to the drive wheels, enabling power transmission. Electronically Controlled Mechanical Automatic Transmission: It interprets driver intentions through the accelerator pedal and selector, with numerous sensors constantly monitoring vehicle status. A microcontroller controls throttle opening, clutch engagement, and gear shifting based on stored optimal programs to achieve the best match, resulting in excellent driving performance, smooth starting, and rapid shifting capabilities. Dual-Clutch Automatic Transmission (DCT): It arranges the gears on two input shafts connected to two clutches, with odd and even gears separated. The shifting process is completed by alternately switching the clutches.