Fuel cell system

Details Fuel cell system Fuel cell system

2011-05-17

2011-05-17

Ryan, Patrick (Department: 1726)

Chemistry: electrical current producing apparatus, product, and

Fuel cell, subcombination thereof, or method of making or...

Process or means for control of operation

C429S429000, C429S428000, C429S433000, C429S448000, C429S449000

Reexamination Certificate

active

07943265

ABSTRACT:
A fuel cell system (50) includes pressure obtaining means (4) for obtaining the pressure in a hydrogen system (anode (1b)) of a fuel cell (1), pressure estimation means (10) for estimating the hydrogen partial pressure in the hydrogen system. Further, the fuel cell system (50) includes impurity concentration estimation means (10) for estimating the impurity concentration in the hydrogen system. That is, the impurity concentration estimation means (10) estimates the impurity concentration taking the present state of the hydrogen system into consideration. Thus, the impurity concentration estimation means (10) accurately estimates the impurity concentration in the hydrogen system of the fuel cell (1).

REFERENCES:
patent: 2002/0094469 (2002-07-01), Yoshizumi et al.
patent: 2003/0157383 (2003-08-01), Takahashi
patent: 1 339 125 (2003-08-01), None
patent: A-02-087479 (1990-03-01), None
patent: A-2002-289237 (2002-10-01), None
patent: A-2003-168467 (2003-06-01), None
patent: A-2003-173807 (2003-06-01), None
patent: A-2003-317752 (2003-11-01), None
patent: WO 00/24074 (2000-04-01), None
patent: WO 2004/049489 (2004-06-01), None
patent: WO 2005/031901 (2005-04-01), None

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