Dr. Ing. H.c. F. Porsche Aktiengesellschaft

Stefan Fischer

Thomas Rauner

Christoph Baumann

A method is provided for operating a hybrid vehicle () having an internal combustion engine (), an electric machine () and having a regenerable filter device that absorbs fuel vapors from a fuel tank of the internal combustion engine. To improve the reproducible operation of a hybrid vehicle with an internal combustion engine and an electric machine, in a purely electric driving mode in which the hybrid vehicle () is driven only by the electric machine (), the regenerable filter device is rinsed by switching on the internal combustion engine () with a scavenging strategy that is dependent on the velocity of the hybrid vehicle ().

Method for operating a hybrid vehicle

A motor vehicle has an internal combustion engine, a fuel tank and a tank ventilation device. The fuel tank is connected via a first and second tank ventilation lines to an intake tract of the internal combustion engine. A hydrocarbon store has first and second chambers separated by a diaphragm. The first chamber is connected in communicating fashion to the first tank ventilation line and the second chamber is connected in communicating fashion to the second tank ventilation line. Valves are arranged in the first tank ventilation line upstream and downstream of the first chamber. A valve is arranged in the second tank ventilation line between the second chamber and the intake tract.

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Stuttgart, Germany

Stefan Fischer