METHOD FOR DETECTING A LEAK IN A FUEL CELL SYSTEM AND FUEL CELL SYSTEM

The invention relates to a method for detecting a leak in a fuel cell system (1), which has: a fuel cell unit (3), having an anode (21) and a cathode (22); a compressed gas store (36); a pressure reducer (70); and an injector (72), said method comprising the following steps: determining an outflow a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	Schild, Johannes
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	The invention relates to a method for detecting a leak in a fuel cell system (1), which has: a fuel cell unit (3), having an anode (21) and a cathode (22); a compressed gas store (36); a pressure reducer (70); and an injector (72), said method comprising the following steps: determining an outflow amount (Mab) of fuel flowing out of the compressed gas store (36) in a specified time interval; determining a through-flow amount (Mdurch) of fuel flowing through the injector (72) in the specified time interval; comparing the outflow amount (Mab) of fuel with the through-flow amount (Mdurch) of fuel; producing an error signal if a difference of the outflow amount (Mab) and the through-flow amount (Mdurch) exceeds a specified limit value. The invention further relates to a fuel cell system (1), which comprises: a fuel cell unit (3), having an anode (21) and a cathode (22); a compressed gas store (36); a pressure reducer (70); and an injector (72). Means for determining an outflow amount (Mab) of fuel flowing out of the compressed gas store (36) in a specified time interval and means for determining a through-flow amount (Mdurch) of fuel flowing through the injector (72) in the specified time interval are provided.