Fluid sprinkling – spraying – and diffusing – Unitary injection nozzle and pump or accumulator plunger – Plunger interconnected or mounted bypass
Patent
1994-03-17
1995-06-13
Grant, William
Fluid sprinkling, spraying, and diffusing
Unitary injection nozzle and pump or accumulator plunger
Plunger interconnected or mounted bypass
239 91, 239 95, F02M 4706
Patent
active
054234840
ABSTRACT:
A fuel injector comprises a casing, a barrel, a piston, a plunger, a nozzle, a needle check and needle check spring, a rate shaping valve and a rate shaping valve spring. The barrel is disposed in the casing and defines a fuel plunger chamber as well as a rate shaping bore between the fuel plunger chamber and an outside of the barrel with a rate shaping valve seat therein. The plunger is disposed in part in the fuel plunger bore of the barrel. The nozzle is disposed in the casing and defines a tip of the fuel injector and also defines a fuel passage from the fuel plunger chamber to an injection orifice at an end of the tip. The needle check is disposed in the nozzle and operably blocks the orifice in a first position. A needle check spring is disposed in the nozzle between the needle check and a reaction member, biasing the check to the first position. The rate shaping valve is disposed in the rate shaping bore of the barrel. The rate shaping valve spring is disposed between the casing and the rate shaping valve.
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Caterpillar Inc.
Grant William
Keen Joseph W.
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