Automatic Transmission

Automatic transmission is a type of gearbox, especially used in the automobile industry for changing gear ratios automatically. It does not require manual shifting of gears. The gearbox has a set of selected gear range.
The system is hydraulically operated and makes use of a torque converter and a set of planetary gears.
Parts of an Automatic Transmission SystemAn automatic transmission consists of the following parts: Torque Converter: It is a device connecting engine and transmission. The instrument takes place of a mechanical clutch, allowing the engine to remain running. A torque converter that provides a variable amount of torque multiplication at low engine speeds. Planetary Gearbox Set: The bands and clutches of this gear set are actuated with the help of hydraulic servos controlled by the valve body, thereby providing two or more gear ratios. Valve Body: The system receives pressurized fluid from a main pump operated torque converter. The pressure coming from this pump is regulated used to run a network of spring-loaded valves, check balls and servo pistons. The valves make use of pump pressure and the pressure from a centrifugal controller on the output side. Use of Automatic Transmission Automobiles Forklift trucks Lawn mowers