Patent ID: 8251866

Claim:
A method of starting an internal combustion engine in a parallel hybrid vehicle in which the internal combustion engine ( 1 ) is connectable by a first clutch (K 1 ) to an electric machine ( 2 ) which is connected to a transmission ( 3 ), the method comprising the steps of: transmitting torque, via the first clutch (K 1 ), as a pilot torque to a speed regulator of the electric machine ( 2 ) such that torque of the internal combustion engine ( 1 ) is used as the pilot torque for the speed regulator when the first clutch (K 1 ) catches; utilizing torques of an old clutch (K_alt) and a new clutch (K_neu), which are involved in a shift under load and acting upon the electric machine ( 2 ), as further pilot torques for speed regulation; adapting a speed of the electric machine ( 2 ), during a speed regulation mode, for synchronization with a new gear during the shift under load; engaging a first clutch (K 1 ), during the shift under load, and starting the internal combustion engine ( 1 ) during the adaptation of the speed of the electric machine ( 2 ) and during the shift under load, in a purely electrical driving operation, via the electric machine ( 2 ).