Method for controlling a compressed air supply of an internal combustion engine during a starting process

A method for operating a vehicle drive train (1) comprising a combustion engine (2), a turbo charger (22) assigned to the combustion engine, a mechanism for injecting additional compressed air into an air intake system (8) of the combustion engine (2), a start and shift clutch (60) and a transmission (62), the method comprising the step of:

• only injecting additional compressed air into the air intake system (8) of the combustion engine (2) during preparation for and execution of a start procedure if, depending upon an actual operating situation of the vehicle, the injection of additional compressed air into the air intake system (8) benefits at least one of driver safety, fuel consumption, drive comfort and clutch wear;
• and
• coordinating activation of the start and shift clutch (60) and the mechanism for injecting additional compressed air into the air intake system (8) such that either a positioning speed or a dynamic behavior of a clutch actuator (74), and a time, a pressure, and a duration of the injection of the additional compressed air into the air intake system (8) are coordinated with each other.