The Introduction.

According to Merriam-Webster, transmission as an assembly of parts including the speed-changing gears and the propeller shaft by which the power is transmitted from an engine to axles then drive wheels. Basically transmission refers to the gearbox that uses gears and gear trains to provide speed ratios and torque conversions from a rotating power source to drive shaft. Transmission also the main part of powertrain after engine.

Location of the transmission in automobile

The most common use is in motor vehicles, where the transmission adapts the output of the internal combustion engine to the drive wheels. Such engines need to operate at a relatively high rotational speed, which is unsuitable for starting, stopping, and slower travel. The transmission reduces the higher engine speed to the slower wheel speed, increasing torque in the process. Transmissions are also used on pedal bicycles, fixed machines, and anywhere rotational speed and torque must be adapted.

Habitually, a transmission has multiple gear ratios (or simply "gears"), with the ability to switch between them as speed varies. This switching may be done manually (by the operator), or automatically. Directional (forward and reverse) control may also be provided.

In automotive industry, the transmission generally is connected to the engine crankshaft via a flywheel. The output of the transmission is transmitted via drive shaft to one or more differentials, which in turn, drive the wheels. While a differential may also provide gear reduction, its main purpose is to allow the wheels at either end of an axle to rotate at different speeds (essential to avoid wheel slippage on turns) as it changes the direction of rotation. The transmission can be manual and automatic system which will be elaborated further in our research for the transmission.

Mercedes-Benz C-class sport coupe, six-speed manual transmission, graphic illustration.

Mercedes-Benz C 180 KOMPRESSOR, automatic transmission, graphic illustration.