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What are the functions of a transmission?

1 Answers

ElisaRose

07/30/25 3:53am

The functions of a transmission are: 1. Changing the transmission ratio: Altering the transmission ratio to expand the range of torque and speed variations in the driving wheels. 2. Enabling reverse driving: Allowing the vehicle to move backward while the engine's rotation direction remains unchanged. 3. Facilitating gear shifting: Utilizing neutral gear to interrupt power transmission, enabling the engine to start, change speed, and making it easier to shift gears or output power. Vehicle transmissions are divided into manual and automatic types: 1. Manual transmission: A manual transmission mainly consists of gears and shafts, achieving speed and torque changes through different gear combinations. An automatic transmission (AT) is composed of a torque converter, planetary gears, and a hydraulic control system, achieving speed and torque changes through hydraulic transmission and gear combinations. A manual transmission, also known as a manual gearbox, requires the driver to manually shift the gear lever to change the gear engagement positions inside the transmission, altering the transmission ratio to achieve speed changes. 2. Automatic transmission: An automatic transmission uses planetary gear mechanisms to change speeds. It automatically adjusts the gear ratio based on the degree of throttle pedal input and changes in vehicle speed. The driver only needs to control the speed by operating the accelerator pedal.

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