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Automatic Transmission

We are specialists in the supply of automatic transmission parts and the in house remanufacture of torque converters to retail, trade, commercial and industrial customers in Africa. We provide parts for a very wide range of automatic transmissions.

Each of us at Turbocharger Africa Services Ltd is committed to providing a consistently reliable, friendly and timely service at a value for money price.

We work hand in hand with JPAT to supply our clients with quality parts.

This Is How An Automatic Transmission Works

Your engine connects to your transmission at a place called a bell housing. The bell housing contains a torque converter for automatic transmission-equipped vehicles as opposed to a clutch on manual vehicles. The torque converter is a fluid coupling whose job it is to connect your engine to your transmission and thus to your driven wheels. The transmission contains planetary gearsets which are in charge of providing different gear ratios.

First and foremost, your engine's flex plate (basically a flywheel for an automatic) connects directly to a torque converter. So when the crankshaft rotates, so does the torque converter housing. The goal of the torque converter is to provide a means by which to connect and disconnect the engine's power to the driven load. The torque converter takes the place of a clutch on a conventional manual transmission.

The major components of a torque converter are: the impeller, the turbine, the stator, and the lock-up clutch. The impeller is part of the torque converter housing, which is connected to the engine. It drives the turbine via viscous forces. The turbine is connected to the transmission input shaft. In essence, the engine turns the impeller which imparts forces on a fluid, which then rotates the turbine, sending torque to the transmission.

The transmission fluid flows in a loop between the impeller to the turbine. That is, the fluid returning from the turbine works against the impeller's rotation and thus against the engine.

The stator sits between the impeller and turbine. Its goal is to minimize churning losses and to increase torque output by redirecting the fluid as it returns from the turbine to the impeller. The stator directs the fluid so that the majority of its velocity is in the direction of the impeller, helping the impeller move, and thus adding to the torque produced by the motor. This ability to multiply torque is why we call them torque converters, not fluid couplings.

The stator sits on a one-way clutch. It can rotate in one direction only when the turbine and impeller are moving at approximately the same speed (like during highway driving). The stator either rotates with the impeller or not at all. Stators don't always multiply torque, though. They provide you with more torque when you're either at stall (applying the brakes at a stop light, for example) or while accelerating, but not during highway cruising.


24 Kiambere Road, Upper Hill
P.O BOX 9081 - 00300 Nairobi, Kenya.

Call us on +254 732 888 000 or +254 732 888 001

Email: info@turbo-services.com