Abstract: An air-cooled engine is hung and fixed under a rear part of a backbone of a body frame. The engine is disposed so that the center axis of a cylinder in its cylinder block extends approximately horizontally and so that its cylinder head is directed toward the front. A fuel injection device is located between an intake valve and an intake port in the cylinder head. An injection nozzle of the fuel injection device and an intake valve opening are placed at a short distance. While the vehicle is idling or running at low speed, the vicinity of the tip of an injector of the fuel injection device is cooled by assist air supplied from a throttle body through a secondary passage, and when the vehicle runs normally or at high speed, the fuel injection device is cooled by the wind that hits the cylinder head.

Abstract: An air-cooled engine is hung and fixed under a rear part of a backbone of a body frame. The engine is disposed so that the center axis of a cylinder in its cylinder block extends approximately horizontally and so that its cylinder head is directed toward the front. A fuel injection device is located between an intake valve and an intake port in the cylinder head. An injection nozzle of the fuel injection device and an intake valve opening are placed at a short distance. While the vehicle is idling or running at low speed, the vicinity of the tip of an injector of the fuel injection device is cooled by assist air supplied from a throttle body through a secondary passage, and when the vehicle runs normally or at high speed, the fuel injection device is cooled by the wind that hits the cylinder head.

Abstract: An internal combustion engine that is comprised of a combustion chamber formed by a cylinder bore closed at one end by a cylinder head and by a piston reciprocating in the cylinder bore. At least one intake passage serves the combustion chamber through an intake port valved by an intake valve. A throttle valve is provided in the intake passage upstream of the intake port and is movable between an opened, full throttle position and a closed, idle position for controlling the flow through the intake passage into the combustion chamber. At least one exhaust passage serves the combustion chamber through an exhaust port. An exhaust valve controls the flow through the exhaust port. Valve actuating means are provided for operating the intake valve and the exhaust valve between their open and closed positions.

Abstract: A number of embodiments of engines that improve engine performance and lean running stability by employing internal EGR controlled by controlling the volume of the intake passage between the throttle valve and the intake port in relation to the maximum combustion chamber volume.

Abstract: A number of embodiments of reformers for reforming fuel for a fuel cell that includes an elongated catalyst bed with fuel to be reformed being delivered at one end of the bed and extracted from the other end of the bed. Heat is applied to a greater extent at the inlet end of the catalyst bed than the outlet end to prevent the formation of carbon monoxide in the products delivered from the outlet. In all embodiments, the catalyst bed has a spiral configuration and the fuel is heated before it is delivered to the catalyst bed. In some embodiments the same heat sources are employed for heating both the fuel and the catalyst bed.

Abstract: A number of embodiments of reformers for reforming fuel for a fuel cell that includes an elongated catalyst bed with fuel to be reformed being delivered at one end of the bed and extracted from the other end of the bed. Heat is applied to a greater extent at the inlet end of the catalyst bed than the outlet end to prevent the formation of carbon monoxide in the products delivered from the outlet. In all embodiments, the catalyst bed has a spiral configuration and the fuel is heated before it is delivered to the catalyst bed. In some embodiments the same heat sources are employed for heating both the fuel and the catalyst bed.

Abstract: A number of embodiments of fuel cell powered wheeled vehicles wherein the fuel cell assembly is positioned contiguous to the center of gravity of the vehicle and inwardly from the wheels for protection and to make a compact assembly. Various vehicle arrangements are shown and in all of them the fuel cell assembly including the fuel cell and a reformer are supported resiliently on the body beneath the seats thereof.

Abstract: A number of embodiments of fuel cells including a storage battery which can intermittently supply electrical power to a load. In such embodiment, water vapor generated from the operation of the fuel cell is condensed, purified and returned to the storage battery to replace the water consumed from the electrolyte from the battery operation. The water vapor is reclaimed by a series of condensers and is returned to a purifier. In some embodiments the reclaimed water vapor is delivered to the battery by an intermittently operated pump while in other embodiments the water vapor is returned by a continuously operated pump through some form of overflow device to ensure against dilution of the electrolyte in the battery.

Abstract: A fuel cell arrangement including an arrangement for improving start up by heating the fuel cell through supplying selectively heated exhaust gases from the reformer to the air port of the fuel cell.

Abstract: An improved system for shutting down a fuel cell that cools the reformer catalyst bed by continuing to supply unreformed fuel to the catalyst bed after the supply of heat to the evaporator is discontinued for cooling the catalyst bed more rapidly through an endothermic reaction.