Fluid sprinkling – spraying – and diffusing – Unitary injection nozzle and pump or accumulator plunger
Patent
1994-08-08
1996-02-27
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Unitary injection nozzle and pump or accumulator plunger
25112901, F02M 4700
Patent
active
054942209
ABSTRACT:
A fuel injector assembly having a valve with a valve seat and at least one pressure-equalizing fuel cavity to reduce pressure variations at the valve seat when the valve is in a closed position. The fuel injector assembly has a fuel injector body and a fuel inlet formed in the fuel injector body. A nozzle with a nozzle fuel cavity is formed in the fuel injector body, and a nozzle check is disposed for reciprocating movement in the nozzle. A valve having a valve element and a valve seat is disposed in the fuel injector body. The valve element has a first position relative to the valve seat in which the fuel inlet is fluidly isolated from the nozzle fuel cavity and a second position relative to the valve seat in which the fuel inlet is fluidly coupled to the nozzle fuel cavity. A fuel supply bore supplies pressurized fuel to a valve fuel cavity formed in the valve, and an annular pressure-equalizing fuel cavity is disposed adjacent the valve fuel cavity and adjacent a periphery of the valve element to reduce fluid pressure variations in the valve fuel cavity so that the fluid seal at the valve seat is not weakened.
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Sandhu Avtar S.
Shinogle Ronald D.
Caterpillar Inc.
Kashnikow Andres
Morris Lesley D.
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