GF27.20-P-2010ACW Torque Converter Component Description

GF27.20-P-2010ACW Torque converter component description
- TRANSMISSION 722.618/640/646/695/699

Component Identification:

Location
The torque converter (B) is bolted to the driven plate in the torque converter housing and installed in the transmission bell housing (A).

Task
When the vehicle is stationary and at idle speed, the torque converter (B) reduces the power flow between the engine and transmission to a minimum and multiplies engine torque and continuously adapts rpm and torque when the vehicle is driven off.

Component Identification:

Design
The impeller (4) is connected to the engine and the turbine wheel (2) to the drive shaft (1). The stator (3) is connected to the transmission housing via a freewheel and stator shaft (8).

Function
The impeller (4) pumps the oil through the impeller blades outwards to the turbine wheel (2) 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 (4). This deflection of the oil onto the stator (3), which is supported against the transmission housing by the overrunning clutch, induces an increase in torque.

Torque conversion reaches its highest value when the rpm difference between the impeller (4) and turbine wheel (2) is at a maximum. As of this operating condition (also referred to as the coupling point), the stator (3) turns with the impeller (4) and turbine wheel (2).