Patent ID: 9316149
Filing Date: 2016-04-19
CPC Classification: B60K,B60W,B60Y,F02B,F16H,Y02T

Claim Text:
1. A method of operating a drive-train of a hybrid vehicle, the drive-train comprising at least a hybrid drive comprising an internal combustion engine ( 1 ) and an electric machine ( 2 ), either an automatic or an automated change-speed transmission ( 3 ) being connected between the hybrid drive and a drive output ( 4 ), and a clutch ( 5 ) being connected between the internal combustion engine ( 1 ) and the electric machine ( 2 ), and the clutch ( 5 ), when starting the internal combustion engine ( 1 ) from a purely electric driving mode, being initially disengaged, the method comprising the steps of: at least partially engaging the clutch ( drag-starting the internal combustion engine ( in parallel with the starting of the internal combustion engine ( when the rotational speed of the internal combustion engine ( engaging the clutch (