Is the Automotive Reducer Located Inside the Transmission?

3 Answers
AdelynLynn
07/28/25 5:00pm
The automotive reducer is located inside the transmission. The reducer serves two main functions, as follows: 1. Changing the direction of power transmission. 2. Acting as an extension of the transmission to provide a common gear ratio for all gears. Below are the structural classifications of reducers: 1. Cylindrical gears. Simple in structure and easy to manufacture, helical cylindrical gears are commonly used. Cylindrical gears are often employed in the main reducer when the engine is transversely mounted, in wheel-side reduction, or in two-stage main reducers. 2. Spiral bevel gears. The transmission feature is that the axes of the driving and driven gears intersect perpendicularly at one point, requiring high installation precision, and are used in longitudinally mounted engine applications. 3. Hypoid gears. The transmission feature is that the axes of the driving and driven gears are perpendicular but do not intersect. 4. Worm gears. Suitable for longitudinally mounted engine applications but less commonly used.
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LeArya
08/11/25 9:10pm
From my years of driving experience, the deceleration function in a car is indeed primarily achieved within the transmission. The transmission is like a gearbox; when you shift gears, the various gears inside it change the vehicle's speed through different combinations, handling both deceleration and acceleration. Remember, the transmission is connected to the engine's output shaft, and the gear design adjusts the speed ratio, ensuring smooth driving during starts, uphill climbs, or acceleration. If you drive a manual transmission, the gear lever directly operates these gears; in an automatic transmission, an electronic system handles the internal switching. Common issues like aging transmission fluid or gear wear can lead to rough deceleration, manifesting as jerky gear shifts or power loss. In such cases, prompt inspection and maintenance are crucial—don’t ignore it, as poor deceleration can compromise driving safety. My advice is to change the transmission fluid regularly, approximately every two years or 40,000 kilometers, to ensure proper lubrication of the internal gears.
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DeDallas
09/29/25 8:05am
As a car owner who frequently follows automotive technology, I understand your confusion. The car reducer is essentially the gear system inside the transmission, playing a crucial role in deceleration. It is enclosed within the transmission housing, with its core function being to reduce engine speed output to the wheels through gear meshing. For example, an automatic transmission uses planetary gear sets to automatically switch gear ratios based on speed and load, much like how smaller gears at high speeds naturally slow down the vehicle; a manual transmission, on the other hand, requires you to manually adjust the gear combination when shifting. Deceleration cannot function without other transmission components, such as the torque converter in automatic vehicles, which cushions impacts. Common deceleration issues include transmission overheating or slipping, often manifesting as weak acceleration, typically caused by low oil pressure or internal wear. I recommend observing whether gear shifts are smooth while driving, and if abnormal deceleration occurs, seek professional diagnosis at a specialized shop as soon as possible.
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