Abstract: A reformer (3) supplies a reformate gas to a fuel cell stack (4). The reformer (3) generates a reformate gas by reforming gaseous fuel vaporized by a vaporizer (2). When current supply from the fuel cell stack (4) to the electric motor (21) undergoes a sharp decrease, unnecessary consumption of gaseous fuel is prevented by closing a first valve (11) which supplies gaseous fuel from the vaporizer (2) to the reformer (3) and by opening a second valve (13) which returns gaseous fuel in the vaporizer (2) to the fuel tank (6).

Abstract: In a fuel cell system and a method of controlling the same, a fuel cell stack 1 is connected at its downstream side with a hydrogen control valve 11 and a hydrogen draw pump 12. A control unit 5 controls the hydrogen draw pump 12 such that hydrogen drawing power is increased to a level larger than that required for normal operation and controls the hydrogen control valve 11 such that opening degree is decreased. After that, the control unit 5 controls the hydrogen control valve 11 such that the opening degree is increased to purge moisture in the fuel cell stack.

Abstract: A reformer (3) supplies a reformate gas to a fuel cell stack (4). The reformer (3) generates a reformate gas by reforming gaseous fuel vaporized by a vaporizer (2). When current supply from the fuel cell stack (4) to the electric motor (21) undergoes a sharp decrease, unnecessary consumption of gaseous fuel is prevented by closing a first valve (11) which supplies gaseous fuel from the vaporizer (2) to the reformer (3) and by opening a second valve (13) which returns gaseous fuel in the vaporizer (2) to the fuel tank (6).

Abstract: In a fuel cell system and a method of controlling the same, a fuel cell stack 1 is connected at its downstream side with a hydrogen control valve 11 and a hydrogen draw pump 12. A control unit 5 controls the hydrogen draw pump 12 such that hydrogen drawing power is increased to a level larger than that required for normal operation and controls the hydrogen control valve 11 such that opening degree is decreased. After that, the control unit 5 controls the hydrogen control valve 11 such that the opening degree is increased to purge moisture in the fuel cell stack.

Abstract: An upstream end of a combustion liner is adapted to be firmly clamped between an end of a supporting bracket and a pusher ring under the bias of a spring. Constructions and arrangements are made so as to enable the supporting bracket to be of one-piece. Various embodiments include a bayonet type, a threaded type, and an annular type attachment means.