Abstract : In automobiles, the engine is a variable drive which transmits power. So gear box is necessary to get required speed and torque.
So the main concept of manual gear shift is to shift the gear at a specific rpm in order to get maximum speed and torque.
A manual transmission, also known as a manual gearbox or standard transmission is a type of transmission used in motor vehicle applications.
It generally uses a driver-operated clutch, typically operated by a pedal or lever, for regulating torque transfer from the internal
combustion engine to the transmission, and a gear-shift, either operated by hand (as in a car) or by foot (as on a motorcycle).
Other types of transmission in mainstream automotive use are the automatic transmission, semi-automatic transmission, and the continuously variable transmission (CVT).
A four-speed transmission is a transmission that allows a vehicle to operate at four different speeds.
This was an improvement on earlier transmissions, because it enabled the vehicles that used the four-speed transmissions to run faster and better than the earlier transmission systems.
Most automobile vehicles today use the four-speed transmission.
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