The job of the car's transmission system is to transmit the power made in the engine to the wheels of the car and consists of the clutch, gearbox, drive shaft, universal joints, rear axle and wheel. There are two types of gearbox transmission; manual and automatic.
The manual transmission gearbox comes into play by enabling the driver to select the right gear for the speed the car is travelling at, ensuring the engine can function as efficiently as possible. In a manual transmission gearbox, the driver controls the gears manually by releasing the accelerator pedal whilst pressing the clutch foot pedal and engaging the correct gear for the driving conditions and speed. Then the clutch is released and pressure reapplied on the accelerator. The correct gear is selected by hand, using a gear stick, which operates the gear linkage (a series of levers and rods) enabling the correct gear to be engaged. A driver of a car with a manual gearbox can normally select from between four to six forward gears, one reverse gear and neutral position. The manual transmission gearbox is normally attached by bolts to the back of the engine, next to the clutch. The manual transmission gearbox tends to be more fuel efficient than automatic or continuously variable gearbox transmissions.
On the other hand, the automatic transmission uses both a mechanical and a hydraulic system to change the gears in the car automatically. The automatic transmission gearbox is attached to a torque converter which fixes directly to the engine of the car. The automatic transmission gearbox comes into play when the driver applies or releases pressure on the accelerator, by automatically selecting and changing the gears for the driver. The automatic transmission gearbox selects the right gear for the speed the car is travelling at, adjusting the speed of the car accordingly, whilst ensuring the engine can function as efficiently as possible. This all enables the driver to concentrate on driving without needing to manually change the gears. Generally automatic transmissions have 4 gears consisting of drive, first gear, second gear, park, reverse and neutral. The automatic transmission gearbox tends to be less fuel efficient than a manual transmission gearbox but offers the driver a smooth ride and the ease of not having to change gears manually.
The gearbox transmission, although built to last and easy to maintain with proper care and attention, will over time need replacing due to damage caused by heat and friction. In a manual gearbox transmission, careless driving, such as choosing the wrong gear by mistake, can speed up wear and tear and cause damage to the gearbox transmission. If you are experiencing problems when changing gear, it is important to get your car's transmission system looked at by a professional and you may need to replace the gearbox transmission.