Method and apparatus for operating a hybrid vehicle

The invention relates to a method for operating a hybrid vehicle, a parallel hybrid drive train (2, 2 ') comprising an internal combustion engine (3), at least one electrical machine (5), at least one switching element (4) by means of which a frictional connection between the at least one electric machine (5) and the internal combustion engine (3) is producible, a transmission (7) and an output (26), said internal combustion engine (3) of an electric drive mode can be started. On the other hand as far as possible to meet an efficient and reliable driving operation, in particular when starting an internal combustion engine (3) to ensure from an electrical drive, yet the driver of such a vehicle by driving comfort on one hand and driving dynamics desired, wherein a start request for starting the internal combustion engine (3 ) with the aid of an evaluation of predetermined selection criteria, depending on the current operating situation variably selected a start mode from a set of available start modes and introduced thereto. In an apparatus for performing the method Betriebszustandserfassungs- and storage means (25) are provided which are provided with an operating strategy unit (22) in communication, by means of which at a start request for starting the internal combustion engine (3) of an electric drive a current operating situation evaluated and, depending on the evaluation, a start-up mode to the start ...