Fluid sprinkling – spraying – and diffusing – Unitary injection nozzle and pump or accumulator plunger – Plunger interconnected or mounted valve
Patent
1994-11-07
1995-08-29
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Unitary injection nozzle and pump or accumulator plunger
Plunger interconnected or mounted valve
239124, F02M 5500
Patent
active
054453232
ABSTRACT:
An open nozzle unit fuel injector having an injector body for receiving a plunger assembly therein is disclosed including a fuel supply source for providing a metered quantity of fuel to a metering chamber formed in a central bore of the injector body to be injected into the cylinder of the internal combustion engine and a trapped volume spill port for a volume of fuel trapped in the metering chamber when the plunger has moved from its fully retracted position to its fully advanced position and injection has terminated. In accordance with the present invention, an open nozzle unit fuel injector is achieved which exhibits a sharp ending of injection, which prevents secondary injection and which significantly reduces the unburned hydrocarbon emissions of the engine incorporating such open nozzle unit fuel injectors including a trapped volume spill port.
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Pataki Arpad
Perr Julius P.
Szarvas Thomas L.
Cummins Engine Company, Inc.
Kashnikow Andres
Morris Lesley D.
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