What are the 2nd and 1st gears in an automatic transmission for?
1 Answers
Automatic transmission's 2nd and 1st gears are used when going downhill or uphill, serving as low-speed gears. There are three common types of automatic transmissions in automatic cars: AT transmission, CVT transmission, and dual-clutch transmission. Most cars equipped with CVT transmissions have low-speed gears. AT transmission is a structurally complex automatic transmission, which is also technologically mature and widely used. CVT transmission is a structurally simpler automatic transmission, with only two cone wheels and a steel belt inside; the steel belt can move on the cone wheels, allowing the transmission to change speed and torque. The dual-clutch transmission is located between the engine and the transmission, operating through two sets of clutches.