Slip control for hydrodynamic torque converter bridging clutch - uses torque signal provided by torque sensor at output of vehicle automatic transmission to calculate required slip

摘要

The slip control determines the slip for the clutch, providing mechanical bridging of the pump and turbine wheels of the hydrodynamic torque converter, in dependence on a torque signal obtained at the output of the vehicle automatic transmission. The torque signal is provided by a torque sensor and fed to a control unit evaluating the torque variations to calculate the clutch slip. Pref. the control unit determines the mean value of the torque signal within a given time window, used to evaluate the torque variations. ADVANTAGE - Prevents rumble noise in vehicle and longitudinal jerking of vehicle during gear changing.