Safety method for carrying out a clutch safety strategy for a motor vehicle's automatic gearbox during an activated crawl function reduces thermal load on the clutch through activation criteria

摘要

Time control is used as an activation criterion for testing whether a clutch slips during a time period to be determined and whether an accelerator pedal is being operated. Four to six seconds are chosen as a value for the time period. A clutch temperature model is used as an activation criterion and clutch limiting temperature of 250[deg] is selected.