The automatic transmission hydraulic distributor (automatic transmission hydraulic distributor) is a component that controls the direction of the flow of pressurized fluid inside the automatic transmission. It plays an important role in shifting gears and controlling various functions of the transmission.
Functions of the automatic transmission hydraulic distributor:
* Shift Control: Directs pressurized hydraulic fluid to the correct friction packs and bands for smooth, precise shifting.
* Torque Converter Lockup: Controls fluid flow to the torque converter, allowing it to lock up at higher speeds, improving efficiency and fuel economy.
* Park Shift Control: Locks the transmission output shaft, keeping the vehicle stationary in Park.
*Overpressure Protection: Regulates hydraulic fluid pressure, protecting transmission components from damage when pressure is too high.
Structure of the automatic transmission hydraulic distributor:
The automatic transmission hydraulic distributor usually consists of the following components:
* Case: A metal or plastic case that houses other components.
*Plungers: Moving pistons that direct the flow of fluid.
* Springs: Provide pressure on the plungers.
* Solenoid valves: Solenoid valves that control fluid flow depending on an electrical signal from the automatic transmission control unit.
* Friction discs: Hold plungers in position, preventing fluid leakage.
Automatic transmission hydraulic distributor control:
The automatic transmission hydraulic distributor is controlled by the automatic transmission control unit (TCU), which receives signals from various sensors such as the speed sensor, throttle position sensor and pressure sensor. The TCU uses these signals to determine optimal pressure and direction of fluid flow, ensuring efficient and smooth transmission operation.