Abstract: A fuel injection system for a diesel engine having a fuel injector with a fuel accumulator chamber connected by an orifice to a fuel source having a pressure controlled by an electronic controller, an injection valve control chamber connected by a second orifice to the fuel source and a solenoid valve controlled by the electronic controller for momentarily releasing the control chamber pressure for momentarily injecting a charge of fuel from the accumulator chamber in a mount and at a rate determined by the source pressure and the pulse width of the solenoid operating pulse.

Abstract: An apparatus for improving the efficiency of a turbo-supercharger at low load levels is disclosed. The apparatus includes an annular gas inlet housing which encircles the turbine of the turbo-supercharger and which housing includes an inlet for gases flowing toward the turbine. Arranged within the housing is a diaphragm, an outer periphery of which diaphragm is connected to the housing. Connected to the inner periphery of the diaphragm is a guide vane ring. Biasing springs, arranged within the housing, urge the diaphragm, and thus the guide vane ring connected to the diaphragm, toward the inlet.

Abstract: In an explosive charge-driven setting gun used for inserting fastening elements, a piston is axially displaced through a piston guide chamber by the gases generated when a cartridge is exploded within the rearward end of the chamber. To cool the setting gun at least one opening is provided from the piston guide chamber so that the heated gases generated when a cartridge is exploded can be removed after the gases have started the axial movement of the piston. The gases can be directed into the atmosphere creating a suction effect so that cooling air is drawn into the piston guide chamber. Alternatively, the gases can be cooled by passing them through a heat exchanger located externally of the chamber and then returning the cooled gases into the chamber.