Method for operating hybrid drive system in motor vehicle, involves guiding reduced torque of auxiliary engine in coasting mode, during exchanging of gear switching stage of main engine for duration at which friction clutch is separated

摘要

The method involves coupling output shafts (28) with input shafts (17, 18) of gear switching part drives (15, 16), respectively. One of the input shafts (17) is connected with a main engine i.e. combustion engine (11). The other input shaft (18) is drive connected with an electrical engine (12). An increased torque of the auxiliary engine is guided in a traction mode and reduced torque of the auxiliary engine is guided in a coasting mode, during exchanging of a gear switching stage of the main engine for the duration, at which a friction clutch (14) i.e. wet or dry clutch, is separated. An independent claim is also included for a control system for a hybrid drive system.