Torque converter component description - GF27.20-P-2010GZ

TRANSMISSION 722.9 in MODEL 164.1/8, 204.0, 216, 221, 251.0/1 up to Model Year 8 

Location 

The torque converter is rigidly bolted to the driven plate in the torque converter housing.

Task 

When the vehicle is stationary and at idle speed the torque converter reduces the power flow between the engine and automatic transmission to a minimum and multiplies engine torque and continuously adapts RPM and torque during vehicle take-off.

Design 

The impeller is connected to the engine, the turbine wheel is connected to the transmission input shaft. The stator is connected to the transmission housing via a freewheel and the stator shaft.

Function 

The impeller pumps the oil through the impeller blades outwards to the turbine wheel as a result of the centrifugal force and thus drives the turbine wheel. The turbine wheel blades direct the oil onto the blades of the stator, which in turn pushes the oil to the impeller. A torque increase occurs due to this reversal at the stator which is supported against the transmission housing via the freewheel.

The torque conversion reaches its highest value when the RPM difference between the impeller and turbine wheel is highest.

As of this operating condition, also referred to as the coupling point, the stator turns with the impeller and turbine wheel.

The oil in the torque converter is continuously exchanged so that heat generated during the operating phase can be drawn away by the transmission oil cooler.