The Automatic Transmission

The Automatic Transmission

The automatic transmission of a vehicle is a part of the drive train. It is designed to transfer the power of the engine to the drive wheels and enables the driver to choose more power in the first gear or gain more speed in the fourth or fifth gear by shifting the gear ratio.

The gears are changed automatically and coincide with the engine RPM, vehicle speed and load. An automatic transmission usually has four or five gears whose highest gear is called an overdrive or O/D. There are other automatic transmissions that are built with a manual shift mode that lets the driver change gears manually.

Most automatic transmissions are designed with planetary gears that change the gear ratio. These planetary gears have three main parts: the outer gear, inner gear, and the planetary carrier. One of the parts of the planetary gear is connected to the input shaft that leads to the engine, while a second part is held stationary. Finally, the third part is connected to the output shaft.

The planetary gear in cars like the used cars Bowmanville is powered by hydraulic clutch packs, brake bands and one-way clutches. Each of the gear is matched to a certain combination of clutch packs and brake bands for it to be engaged or disengaged.

Moreover, most of the components of used cars Bowmanville rely on hydraulic pressure in order to be operated. In this case, the automatic transmission fluid (ATF), specially-formulated oil, is used to allow the components to work effectively. It is also used to transfer hydraulic pressure, lubricate moving parts and cool down the transmission.

Another important part of the automatic transmission of ram trucks Durham is the oil pump. The oil pump supplies the needed fluid pressure for all the transmission components to work well and lubricates moving parts, just like the ATF. This operates when the engine runs. Moreover, the transmission contains a torque converter which connects it to the engine. This operates just like the clutch in a manual transmission except that it uses fluid flow to transfer the engine torque to the transmission instead of depending on mechanical friction like the clutch does.