Transmission as one of most essential part in a vehicle, which serve as control movement of the vehicle. It uses the power created by the engine and allow the wheels to move and stay on stationary position, It also keeps the engine within a certain revolutions per minute range.

A transmission system refers to the mechanism that transmits the power developed by the engine to the wheels of an automobile in the form of kinetic energy. These transmission parts are toothed wheels that comprises of interlinked set of rotating gears which are basically used for changing speed or direction of a moving vehicle.
The expression of ‘transmission’ in an automobile engine refers to the gearbox. For covering smaller distances there are low gears and for larger distances there are high gears. High gears usually have more number of teeth and have an ability of covering larger distances in just one revolution of pedal.

The arrangement of the transmission and where it sits is dependent on whether the car is all-wheel drive, front-wheel drive, or rear-wheel drive. basically, transmission system comprises of various transmission components such as gears, shafts and other parts, which function together to enable the movement of a vehicle.

In addition, the engines typically operate over a range of 600 to about 7000 rpm (though this varies, and is typically less for diesel engines), while the car’s wheels rotate between 0 rpm and around 1800 rpm and provides its highest torque and power outputs unevenly across the rev range resulting in a torque band and a power band.

How Automobile Transmission System Works

At first, the engine produces some power in expansion stroke, it called as indicated power. this power is fed into crankshaft and tends to rotate by pushing the piston downward. The power that comes through a crankshaft is called, brake power. Hence the downward movement of piston tends to rotate crankshaft and it produces some torque.

The power from the engine is passed into gearbox. In a transmission system consists of clutch and gearbox. The gearbox can be manually or automatically operated. The function of gearbox is used to vary the speed of vehicle from the engine as per we required and mainly depends upon road conditions.

Here the clutch plays an important role. The function of clutch is used to engage and disengage the transmission shaft (gearbox shaft) to engine. It can be operated by an lever in driver compartment. Always clutch is in engage position hence power can be transmitted from engine to gearbox, then pressing a lever it would became disengaged, hence there is no power transmission from engine. This stage is called engine idling. Finally the power from the gearbox is passed through the differential by propeller shaft. The propeller shaft is connection between drive and driven shaft. The Differential would split the power to wheels as per our positioning of vehicle. At last vehicle can be propelled.