ML 320 (163.154) V6-3.2L (112.942) (1998)
Torque Converter Clutch: Description and Operation
Models With Touch Shift
Except CODE (479) Cylinder Shutoff
Location/Task/Design/Function
Component Illustration
Location
The torque converter lockup clutch is integrated in the torque converter.
Task
The power losses of the torque converter are minimized by reducing torque converter slip, thus reducing the engine speed. The torque converter
lockup clutch is activated in 5th, 4th and 3rd gears in relation to the engine speed and engine load.
Design
The externally toothed disc carder (16a) is connected to the impeller (P) via the cover shell (17). The internally toothed disc carrier (16b) is connected
to the turbine wheel (T).
Function
When actuated by the ETC control module (N15/3), oil pressure controlled by the torque converter lockup PWM solenoid valve (Y3/6y6) is directed
through the input shaft (1) to the pressure chamber behind the piston (16d). This compresses the clutch plate set (16c), thus allowing direct torque
transmission between the impeller (P) and the turbine wheel (T).
Related Information
With CODE (479) Cylinder Shutoff
Location/Task/Design/Function