Technology and Products How Our Transmissions Work

What is a Transmission

A transmission is an important automobile component, which transmits engine power to the wheels. There are two types of transmissions: a type which automatically changes its gears, and another type which requires manual operation to change its gears.
The former is generally called automatic transmission (AT) which includes ATs that use physical gears, continuously variable transmission (CVT), and hybrid transmission. These transmissions automatically change gear ratios to transmit engine power to the wheels in response to the driving condition of the vehicle.
The latter that require manual operation to change gears are generally called manual transmission (MT).
We develop and manufacture all four types of transmissions; AT, CVT, hybrid transmission, and MT.

How an AT Works

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How a CVT Works

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How a Hybrid Transmission Works

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How a MT works

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Type and Layout of Transmissions

Generally, the engine is located at the front of a vehicle. Vehicles can be categorized into three types: vehicles whose front wheels are driven by the transmission, those whose rear wheels are driven by the transmission, and those in which the transmission drives both the front and rear wheels.
To fit the direction of the engine mounted on the car or its drive system, transmissions vary in their appearance and internal layout of parts. However, they all have the same function.

Layout of RWD Transmission

Layout of RWD Transmission

RWD refers to front-engine, rear-wheel-drive.
This type of transmission is often used in vehicles with a large engine displacement, including sedans and sports cars.

Layout of FWD Transmission

Layout of FWD Transmission

FWD refers to front-engine, front-wheel-drive.
This type of transmission is more common, and used in various passenger cars. 

Layout of RWD Based 4WD Vehicle

Layout of RWD Based 4WD Vehicle

Layout of FWD Based 4WD Vehicle

Layout of FWD Based 4WD Vehicle

*Transfercase ・・・ a part that transfers the required power to all wheels from the transmission

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