Gives torque: It multiplies the motor's torque output to provide additional electrical power into the wheels, enabling the motor vehicle to push via steep inclines. Adjust equipment ratio: The gearbox alterations equipment ratio to match driving disorders. It permits the motive force to manually alter the gear ratio According to https://gearbox-auto49360.blogdanica.com/33745910/the-best-side-of-gearbox-auto