FUEL CELL SYSTEM WITH IMPROVED FUEL RECIRCULATION

A fuel cell system comprising a fuel cell stack, a fuel recirculation line provided with a jet pump and a valve controlled by a control unit based on the anode-cathode pressure differential such that the valve is closed to reduce or stop fuel supply when the anode-cathode pressure differential reach...

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Bibliographische Detailangaben
Hauptverfasser: FELLOWS, RICHARD G, BLASZCZYK, JANUSZ
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:A fuel cell system comprising a fuel cell stack, a fuel recirculation line provided with a jet pump and a valve controlled by a control unit based on the anode-cathode pressure differential such that the valve is closed to reduce or stop fuel supply when the anode-cathode pressure differential reaches a predetermined value, and opened again to circulate more fuel through the jet pump when the pressure differential is below a predetermined value, to create a pulsed fuel supply that improves the fuel recirculation at low loads and ensures adequate water removal from the anode flow field channels.