Automatic transmissions (automatic transmissions) usually do not have a hydraulic clutch because they do not have a clutch. The automatic transmission uses a torque converter or a hydraulically controlled multi-plate clutch, which ensures smooth gear shifting.
Torque converter (GTF)
* Replaces the clutch, transmitting torque from the engine to the gearbox.
* Consists of a pump, turbine and stator that rotate in an oil bath.
* The pump driven by the engine transmits torque to the turbine, which in turn transmits it to the stator.
* The stator is connected to the gearbox and regulates the gear ratio between the pump and turbine.
Multi-disc clutch with hydraulic control
*Used in some automatic transmissions to provide smoother shifting and improved efficiency.
*Consists of a set of steel and friction discs that are clamped together using hydraulic pressure.
* Hydraulic control regulates the pressure exerted on the discs, ensuring smooth connection and disconnection.