Patent ID: 7070633

Claim:
A fuel gas generating apparatus for a fuel cell comprising: a vaporizer that generates a fuel vapor by vaporizing a raw liquid fuel; a reformer that generates a reforming gas that includes hydrogen from the raw fuel gas that has been partially oxidized by adding reforming air to the fuel vapor generated by said vaporizer; a CO eliminator that generates a fuel gas having carbon monoxide eliminated by adding a CO eliminating air to said reforming gas generated by said reformer; and a reforming air amount control device that controls the supplied amount of said reforming air during the warm-up of said reformer so as to become larger than the supplied amount of reforming air during the idle operation after completion of the warm-up, said reforming air amount control device further controlling the supplied amount of said reforming air so as to decrease the supplied amount which was increased by said reforming air amount control device during said warm-up of said reformer when the temperature of said reformer is higher than a first predetermined temperature which is determined by the regenerating temperature of a reforming catalyst in said reformer.