GF27.20-P-3002ACL Torque Converter Lockup Clutch Control, Function

GF27.20-P-3002ACL Torque converter lockup clutch control, function
- Transmission 722.618/646/694/696


Function requirements for torque converter lockup clutch control, general
^ Circuit 87 ON
^ Circuit 61 ON

Control of torque converter lockup clutch, general
The aim of using the torque converter lockup clutch is to lower the fuel consumption and exhaust gas emission of the vehicle by reducing the converter slip. This stands in contradiction to the ride comfort demands made on the drive train with regard to its vibration behavior. The task of the electronic transmission control is therefore to close the clutch in all driving situations relevant to fuel consumption, if possible, and ensure that the engine vibrations are isolated from the drive train.

The following variables determine the operating condition of the torque converter lockup clutch:
- Accelerator pedal movement
- Uphill and downhill gradients
- Transmission shift functions
- Transmission oil temperature
- Durability requirements
- Load condition
- Engine control influences