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What is the working principle of a car transmission?

2 Answers

McFrancisco

07/30/25 12:19am

Here is a related introduction to the working principle of a car transmission: 1. The working principle of a manual transmission is to shift the active gear on the intermediate shaft by moving the gear lever, combining gears of different sizes with the power output shaft to change the torque and speed of the driving wheels. 2. An automatic transmission uses a planetary gear mechanism for shifting. It automatically changes gears based on the degree of the accelerator pedal and changes in vehicle speed. The driver only needs to operate the accelerator pedal to control the speed. The introduction to transmissions is as follows: 1. Transmissions are divided into manual and automatic types. Manual transmissions mainly consist of gears and shafts, achieving speed and torque changes through different gear combinations. 2. There are four common types of automatic transmissions for cars: Hydraulic Automatic Transmission (AT), Continuously Variable Transmission (CVT), Automated Manual Transmission (AMT), and Dual-Clutch Transmission (DCT). Currently, AT is widely used in cars and has almost become synonymous with automatic transmissions. The 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.

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KaydenAnn

08/16/25 4:43am

I've seen quite a few car transmission working principles, and find them quite interesting. Actually it's quite simple - the power generated by the engine is transmitted to the transmission through a shaft, where there are different gears forming various gear ratios. At low speeds, smaller gears are used to give the car more power for acceleration; at high speeds, larger gears are engaged for faster speed but with less torque. Manual transmissions require you to press the clutch to disconnect and shift gears, while automatic ones rely on internal planetary gears and torque converters to adjust automatically, making things easier. Transmission fluid ensures gear lubrication and prevents overheating and wear. If the transmission is jerky or makes noise, it might be due to worn gears or dirty fluid, so regular fluid changes are necessary for maintenance. When driving, shift smoothly and avoid stomping on the accelerator, which can help prolong transmission life.

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