Method for detecting a malfunction, tank system, computer program product and storage means

A tank system (11) for a fuel cell system (10), comprising:

• a plurality of fuel tanks (12, 13, 14),
• a fuel line arrangement (15) for conducting fuel from the fuel tanks (12, 13, 14),
• a fuel outlet arrangement (16) with an outlet means (17, 18, 19) for each fuel tank (12, 13, 14) for the controlled conducting of fuel from the fuel tanks (12, 13, 14) through the fuel line arrangement (15),
• a control unit (20) configured to perform a startup operation of the fuel cell system (10) and thereby cause fuel to be conducted from the fuel tanks (12, 13, 14) through the fuel line arrangement (15),
• a determination unit (21) configured to determine a refilling value concerning a refilling fuel via the fuel line arrangement (15) into at least one fuel tank (12, 13, 14) during the startup operation, and
• a computing unit (22) configured to perform a comparison between the determined refilling value during startup operation and a reference refilling value provided, and to determine a malfunction of the fuel outlet arrangement (16) based on the comparison.

A non-transitory, computer-readable storage medium (24) containing instructions that when executed by a computer cause the computer to detect a malfunction of a fuel outlet arrangement (16) in a tank system (11), wherein the tank system (11) has several fuel tanks (12, 13, 14), a fuel line arrangement (15) for conducting fuel from the fuel tanks (12, 13, 14) and a fuel outlet arrangement (16) with an outlet means (17, 18, 19) for each fuel tank (12, 13, 14) for the controlled conducting of fuel from the fuel tanks (12, 13, 14) through the fuel line arrangement (15), by:

• performing a startup operation and thereby causing fuel from the fuel tanks (12, 13, 14) to be conducted through the fuel line arrangement (15),
• determining a refilling value concerning a refilling fuel via the fuel line arrangement (15) into at least one fuel tank (12, 13, 14) during the startup operation,
• providing a reference refilling value,
• performing a comparison between the refilling value determined during startup operation and the reference refilling value provided, and
• detecting a malfunction of the fuel outlet arrangement (16) based on the comparison.