Automatic transmission diagram with torque converter
1. Torque converter
* Converts engine energy into a flow of working fluid.
* Provides smooth gear changes and torque transmission.
2. Pump
* Driven by the engine and creates pressure of the working fluid.
3. Turbine
* Driven by the flow of working fluid from the pump.
* Transmits torque to planetary gears.
4. Stator
* A stationary component that directs the flow of working fluid between the pump and turbine.
* Improves torque conversion efficiency.
5. Planetary gears
* Gear set providing different gear ratios.
6. Drum
* The stationary component that supports the planetary system.
7. Clutches and brakes
* Clutch devices that engage and disengage various planetary gears.
8. Valve body
* Controls the flow of hydraulic fluid to activate clutches and brakes.
9. Backstage
* Provides a mechanical connection between the gear selector and the valve body.
10. Working fluid
* Hydraulic control oil, which transmits power and lubricates automatic transmission components.
Job:
1. The engine drives a pump, which creates pressure of the working fluid.
2. The working fluid is directed to the torque converter, which converts the energy into fluid flow.
3. The fluid flow acts on the turbine, rotating it.
4. The stator directs the fluid flow, improving conversion efficiency.
5. The turbine transmits torque to the planetary gears.
6. Clutches and brakes are turned on and off by the valve body, regulating the flow of working fluid.
7. This drives the planetary gears, creating different gear ratios.
8. The rotation of the planetary gears drives the output shaft, which transmits torque to the wheels of the vehicle.