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Torque converter, function - GF27.20-P-5100-02N

Transmission 722.9 in model 171.4, 203, 209, 211, 215, 219, 220, 230, 463.303/340/341 

Fig 1: Identifying Torque Converter Function
G07287862Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Torque converter, function 

When the vehicle is stationary and at idle speed, it is the task of the torque converter to reduce the power flow between the engine and automatic transmission to a minimum. Furthermore, it serves to amplify engine torque and to continuously match rotational speed and torque when starting off.

The impeller (4) is connected to the engine and turbine wheel (2) is connected to the transmission input shaft. The stator (3) is connected to the transmission housing via a freewheel and the stator shaft.

IMPORTANT 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.