Fluid pressure in a variable volume whirl chamber exerts a force that posons a spring biased piston. The positioning of the piston determines the amount of fuel oil supplied to a ship's boiler by an arrangement of ports in a whirl chamber cartridge. The cartridge provides an enclosure for the whirl chamber, a piston and a biasing spring. The fuel is delivered axially along the outside of the cartridge through the ports to the whirl chamber and out an orifice located at the forward end of the whi...

An electromagnetic fuel injection valve in which a valve needle coupled to the armature has twisting channels for carrying fuel and for creating turbulence therein. The channels terminate in a pressure chamber whose volume is chosen to be equal to or smaller than the volume of fuel injected in a single stroke.

A leaf spring nozzle flow control which is positioned in the nozzle body controls the flow of fluid to a fixed restriction nozzle such that the flow varies substantially in direct linear relationship with the pressure of the fluid. The flow control includes a plate having a plurality of leaf spring valves which are biased by the fluid pressure from a first position in which flow to the nozzle is blocked to a second position in which the fluid flows to the nozzle when the pressure of the fluid ex...

A fluid injector, particularly suitable for discharging liquid fuel to a boiler, has a tip valve for controlling fluid discharge through a passage, first and second ports for connection to an external fluid delivery and return circuit, a first fluid path in the injector from the first port to the vicinity of the discharge passage and a second fluid path in the injector from the vicinity of the discharge passage to the second port and a spill valve in the first fluid path; by delivering fluid to ...

A liquid fuel injection nozzle unit includes a valve member which is loaded by a spring into contact with a seating and is movable away from said seating by the action of fuel under pressure. The head of the valve member is provided with groove means to promote swirling of the fuel downstream of the valve member as the valve member is opened. The groove means is so constructed that the effective cross sectional area of the grooves attains a maximum value before the valve member has moved to its ...

The invention comprises a fluid injector including a discharge passage, and a tip sealing valve for controlling fluid discharge through said passage, said tip sealing valve being responsive to a fluid differential operative thereon in a non-discharge condition of the fluid injector to close said discharge passage, said tip sealing valve being responsive to another fluid differential operative thereon in a discharge condition of said fluid injector to permit fluid discharge through said discharge...

A dual orifice fuel nozzle characterized in the provision of a pressure responsive flow modulating member in the primary fuel supply passage upstream of the spin passages and spin chamber of the primary discharge orifice, said member being operative in response to increasing primary fuel pressure to decrease the flow through the primary discharge orifice and to increase the angle of the fuel spray pattern therefrom once engine ignition and/or some low power condition is reached.

A catalyst for catalytically reducing nitrogen oxides present in an exhaust gas in the presence of a reducing gas to convert said nitrogen oxides to harmless substances, which comprises a mixture consisting essentially of the oxides of V and Nb.

A surgical blade package facilitates the mounting of a surgical blade on to the forwardly-projecting cleat on a scalpel handle; and following use in the O.R., the surgical blade package facilitates stripping the used blade off the scalpel for disposal in a sharps container. The cleat is inserted beneath the rear end portion of the blade, and between the blade and the bottom wall of the blade package; and forward and upward movement of the scalpel snaps the blade on to the scalpel in a continuous...

Nitrogen oxides, NO.sub.x, are depleted/removed from oxygen-containing gas streams comprising same, by contacting an admixture of ammonia and such gas streams, at elevated temperatures, with a catalyst which comprises a catalytically active metallic oxide deposited on a porous alumina support, said support comprising a volume of pores having diameters larger than 1000 A in excess of 25 cm.sup.3 /100 g, a volume of pores having diameters larger than 300 A in excess of 40 cm.sup.3 /100 g, a total ...