Abstract: A fuel cell system is provided with a fuel cell, a system power source, an inverter system and a fuel gas supply device for supplying the fuel cell with fuel gas of a regulated quantity, wherein when the system power source falls in a power failure during the power use by the external loads, at least one of the power use by the internal loads (resistances) and the supply quantity of the fuel gas supply device is altered in dependence on the output power from the fuel cell or the power use by the external loads.

Abstract: A fuel cell system is provided with a fuel cell, a system power source, an inverter system and a fuel gas supply device for supplying the fuel cell with fuel gas of a regulated quantity, wherein when the system power source falls in a power failure during the power use by the external loads, at least one of the power use by the internal loads (resistances) and the supply quantity of the fuel gas supply device is altered in dependence on the output power from the fuel cell or the power use by the external loads.

Abstract: A three-dimensional graphic displaying system and its method allow a viewpoint to a displayed graphic to change when the displayed graphic is rotated or moved. By including a data generating unit for generating scale mark data for respective variable values corresponding to each coordinate axis, as a combination of two or more lines which exist on a plane perpendicular to a coordinate axis, and are not located on an identical straight line; a viewpoint converting unit for converting the generated data into data of a coordinate system which varies depending on a position of a user viewpoint; and a displaying unit for two-dimensionalizing the converted data, and displaying the two-dimensionalized data on a display unit in correspondence with the position of the user viewpoint, the positions of the scale marks can be identified even if the viewpoint exists in an extended portion of the scale marks on the coordinate axis.

Abstract: A valve moving device for a combustion engine wherein a hole engagement part pivotally mounts a rocker arm on a rocker shaft. The axial centerline of the hole engagement part is provided on a slant with respect to the axial centerline of the rocker shaft, so that the axial centerline of the pivot hole of the rocker arm is slanted relative to the axial centerline of the camshaft.