What is the function of a transmission?

2 Answers
StellaFitz
07/24/25 5:12am
Here is an introduction to the functions of a transmission: 1. Change the transmission ratio: This alters the vehicle's driving speed and the torque on the driving wheels, allowing the engine to operate under the most favorable conditions. During driving, the engine needs to work in different states to meet environmental requirements due to varying surrounding conditions. 2. Interrupt power transmission, achieving neutral gear: When the clutch is engaged, the transmission does not output power. Similarly, when the clutch is not engaged but the transmission is in neutral, it also does not output power. This function allows the driver to leave the driver's seat without turning off the engine. 3. Enable reverse driving: In real-life situations, it is often necessary to drive the vehicle in reverse. However, the engine's crankshaft can only rotate in one direction. The inclusion of a reverse gear in the transmission makes it possible for the vehicle to move backward.
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Pires
08/11/25 12:54am
Having driven for over twenty years, I deeply feel that the transmission is like the intelligent brain of a car, specifically directing how the engine should exert its power. When climbing steep slopes, shifting to a lower gear makes the engine push you up with a surge of energy, as if it's been given a boost. During high-speed cruising, shifting to a higher gear immediately quiets down the RPM and saves a lot of fuel. The mechanical sensation of pushing and pulling the gear lever in a manual transmission car is particularly thrilling, while automatic transmissions eliminate the hassle of pressing the clutch, making them a lifesaver in traffic jams. I remember one time when the transmission leaked oil and wasn't repaired promptly—starting the car was such a struggle, and fuel consumption doubled. During maintenance, always remember to change the transmission oil, as its performance significantly deteriorates over time.
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