Torque Converter: Description: Notes

Fig 1: Torque Converter Components

Courtesy of DAIMLERCHRYSLER CORP.

The torque converter is a hydraulic device that couples the engine crankshaft to the transmission. The torque converter consists of an outer shell with an internal turbine (1), a stator (4), an overrunning clutch, an impeller (2) and an electronically applied converter clutch (5). The converter clutch provides reduced engine speed and greater fuel economy when engaged. Clutch engagement also provides reduced transmission fluid temperatures. The converter clutch engages in third gear. The torque converter hub (3) drives the transmission oil (fluid) pump. See Fig 1.

The torque converter is a sealed, welded unit that is not repairable and is serviced as an assembly.