Abstract: A fuel battery stack is provided with: hole portions formed in a coolant supplying manifold; cylindrical collar members provided in the hole portions; and fastening bolts inserted in the cylindrical collar members and screwed in a second end plate. On the inner circumferential surface of each of the hole portions, a plurality of projections that support the outer circumferential surface of the cylindrical collar member are provided so as to protrude radially inward.

Abstract: A fuel battery stack is provided with: hole portions formed in a coolant supplying manifold; cylindrical collar members provided in the hole portions; and fastening bolts inserted in the cylindrical collar members and screwed in a second end plate. On the inner circumferential surface of each of the hole portions, a plurality of projections that support the outer circumferential surface of the cylindrical collar member are provided so as to protrude radially inward.

Abstract: A fuel modification apparatus is equipped with evaporators for evaporating a raw fuel as a fuel to be modified, a super heater for elevating the temperature of the above evaporated raw fuel to a temperature required for the modification, a modification vessel for modifying the above raw fuel having an elevated temperature to form a modified gas, and a preheater for preheating a heating fluid for evaporating the above raw fuel in the evaporator. The evaporators are arranged on a concentric circle, surrounding the superheater.

Abstract: A home fuel gas refining system has a modifier for modifying a hydrogen-containing fuel to produce a modified gas. The modifier includes a hydrogen-containing fuel supply mechanism for supplying the hydrogen-containing fuel and a modifying air supply mechanism for supplying modifying air. The hydrogen-containing fuel delivered from the hydrogen-containing fuel supply mechanism and the modifying air delivered from the modifying air supply mechanism are mixed with each other by a modification fuel ejector, and then delivered to a reactor.

Abstract: A fuel modification apparatus is equipped with evaporators for evaporating a raw fuel as a fuel to be modified, a super heater for elevating the temperature of the above evaporated raw fuel to a temperature required for the modification, a modification vessel for modifying the above raw fuel having an elevated temperature to form a modified gas, and a pre-heater for preheating a heating fluid for evaporating the above raw fuel in the evaporator. The evaporators are arranged on a concentric circle, surrounding the superheater.

Abstract: A home fuel gas refining system has a modifier for modifying a hydrogen-containing fuel to produce a modified gas. The modifier includes a hydrogen-containing fuel supply mechanism for supplying the hydrogen-containing fuel and a modifying air supply mechanism for supplying modifying air. The hydrogen-containing fuel delivered from the hydrogen-containing fuel supply mechanism and the modifying air delivered from the modifying air supply mechanism are mixed with each other by a modification fuel ejector, and then delivered to a reactor.

Abstract: A cell module structure comprises a bus bar plate and plural cylindrical cells. The bus bar plate including plural bus bars each having a positive bus bar terminal, a negative bus bar terminal, and a screw formed in one of the terminals, the bus bars being serially connected to each other with the positive bus bar terminal corresponding to the negative bus bar terminal; and a control substrate integrally provided to the bus bar and connected to the bus bars. The cell includes a positive cell terminal and a negative cell terminal coaxially aligned at an end thereof, and a screw formed in the terminal having the same polarity as that of the bus bar terminal which is formed with the screw to which the above screw is screwed. The screw of the cell is screwed to the screw of the bus bar, so that different terminals with no screw are brought into contact with each other, whereby the plural cells are serially connected.

Abstract: A cell module structure comprises a bus bar plate and plural cylindrical cells. The bus bar plate including plural bus bars each having a positive bus bar terminal, a negative bus bar terminal, and a screw formed in one of the terminals, the bus bars being serially connected to each other with the positive bus bar terminal corresponding to the negative bus bar terminal; and a control substrate integrally provided to the bus bar and connected to the bus bars. The cell includes a positive cell terminal and a negative cell terminal coaxially aligned at an end thereof, and a screw formed in the terminal having the same polarity as that of the bus bar terminal which is formed with the screw to which the above screw is screwed. The screw of the cell is screwed to the screw of the bus bar, so that different terminals with no screw are brought into contact with each other, whereby the plural cells are serially connected.

Abstract: An electric double-layer capacitor includes a plurality of electrode elements each having a current collector, a polarized electrode disposed on a surface thereof, and a strip-like current collecting lead extending from an end of the current collector. The electrode elements are stacked as alternately belonging to respective polarities, and the current collecting leads of the electrode elements are stacked into lead assemblies of the respective polarities. A separator is interposed between the stacked electrode elements, and the lead assemblies are connected respectively to electrode terminals. The lead assemblies of respective polarities serve as respective connectors connected to the electrode terminals. Each of the connectors has a flat joint region as at least a portion thereof. The current collecting leads of each of the lead assemblies are integrally joined to each other by the flat joint region by ultrasonic welding before the connector is connected to the electrode terminal.

Abstract: A fuel supply mechanism for a gas combustion engine has a tank filled with a gas fuel, a fuel injector having a fuel injection valve mounted on the gas combustion engine, a pipe for supplying the gas fuel from the tank to the fuel injector, a gas fuel cutoff valve in the pipe for cutting off the gas fuel flowing through the pipe, a gas fuel state detector for detecting a state of the gas fuel, and a control unit responsive to a detected signal from the gas fuel state detector for controlling the gas fuel cutoff valve and the fuel injection valve.