The purpose of the gear box=

All about engine have some purpose for gear box there is one purpose is - The engine keeps The fixed power. But the Gearbox work of building more power at the time of shifting the car from place to place. And in this way The engine r.p.m. Remains stable, Without changing anything, The increasing of the power is done By the gearbox.more power Reduction speed And low power And over speed,This is formate by the help of gearbox Ratio, According To our Requirement We can get All this through Gearbox.Not changing the direction of the engine rotation, we can take the carriage backwards with the help of the gear box Keep the vehicle in a neutral position while kept the engine running or leave the clutch pedal. By doing Crossing every fluctuation of the road The carriage takes the gearbox forward