Fluid sprinkling – spraying – and diffusing – Unitary injection nozzle and pump or accumulator plunger – Plunger interconnected or mounted valve
Patent
1997-02-19
1999-02-23
Weldon, Kevin
Fluid sprinkling, spraying, and diffusing
Unitary injection nozzle and pump or accumulator plunger
Plunger interconnected or mounted valve
239 92, F02M 4702
Patent
active
058735275
ABSTRACT:
A fuel injector includes an injector body with a plunger bore, a nozzle chamber, and a nozzle outlet that opens to the nozzle chamber. A plunger is positioned to reciprocate in the plunger bore between an advanced position and a retracted position. A portion of the plunger and a portion of the plunger bore define a fuel pressurization chamber. At least one of the injector body and the plunger define a main passage extending between the fuel pressurization chamber and the nozzle chamber. At least one of the injector body and the plunger define a restricted passage extending between the fuel pressurization chamber and the nozzle chamber. The restricted passage restricts flow of fuel to the nozzle chamber over the beginning portion of each injection event. The main passage is substantially closed over a portion of the plunger's movement between its retracted position and its advanced position.
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Pattanaik Satish
Shafer Scott F.
Caterpillar Inc.
Keen Joseph W.
McNeil Michael B.
Weldon Kevin
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