Bayerische Motoren Werke Aktiengesellschaft

Volker Formanski

Norbert Frisch

Martin Thomas

Maximilian Zettl

A method for determining a sealing tightness of a fuel cell stack includes providing of fuel into a cathode space, sealed off gas-tight against further components of a cathode subsystem, formed at least partly by the fuel cell stack, and detecting of a value which is indicative of a pressure change in the cathode space, where a cathode test pressure in the cathode space is higher than a pressure outside the fuel cell stack.

Method for determining the sealing tightness of a fuel cell stack

A method for operating a fuel cell system includes delivering an oxidant to at least one fuel cell by at least one oxidant delivery device where the stoichiometric ratio of the oxidant is modified on the basis of the delivery rate of the oxidant delivery device.

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Ismaning, Germany

Volker Formanski