A transmission which automatically selects the appropriate gear without any input from the driver. Gears are chosen according to the speed of the vehicle and load on the engine. Automatic transmissions are either hydraulic or electric operated.
A type of transmission that shifts itself. A fluid coupling or torque converter is used instead of a manually operated clutch to connect the transmission to the engine. Newer automatics use electronic controls to regulate shifting and torque converter loc
A mechanism in the drive train with gear sets to vary the power and torque delivered to the driven wheels as a function of engine load and speed, usually incorporating a fluid coupling or torque converter to allow changing gears and reversing direction without using a foot operated clutch.
A transmission that shifts its own gears according to the prevailing speed, load, and road condition. Also called automatic gearbox. Operation can be electrical or hydraulic. BDC(see BOTTOM DEAD CENTER)
A computer system which decides when the transmission should shift and then delivers an electrical signal to create that shift. Power is transferred from the engine using a fluid coupling called a torque converter.
A type of transmission that automatically changes the gear when your car is at different speed. This is used on most of the road cars nowadays due to its convenient feature. This type of transmission are easy to operate but it do not have the power like the manual transmission provide. Go Back Top
Transmission which changes the gear ratio without assistance from the driver and without interruption of power flow, the changes being governed by factors such as engine load and vehicle road speed. The driver usually has a manual override
An automatic transmission is an automobile gearbox that can change gear ratios automatically as the car or truck moves, thus freeing the driver from having to shift gears manually. (Similar but larger devices are also used for railroad locomotives.)