Fluid sprinkling – spraying – and diffusing – Unitary injection nozzle and pump or accumulator plunger – Accumulator plunger biased to discharge fluid
Reexamination Certificate
2008-01-08
2008-01-08
Nguyen, Dinh Q. (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Unitary injection nozzle and pump or accumulator plunger
Accumulator plunger biased to discharge fluid
C239S088000, C239S091000, C239S092000, C239S124000, C239S533200, C239S096000
Reexamination Certificate
active
07316361
ABSTRACT:
A fuel injector with a pressure booster supplied with fuel at high pressure. A work chamber of the pressure booster is separated from a differential pressure chamber via a booster piston. The pressure relief and the subjection to pressure of the differential pressure chamber are effected via a switching valve which communicates with the differential pressure chamber via a control line. A pressure chamber on an injection valve member communicates with a compression chamber of the pressure booster via a pressure chamber supply line. The switching valve is embodied as a direct-switching 3/2-way valve, whose valve needle is pressure-balanced and has both a sliding seat and a slide seal.
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Greigg Ronald E.
Nguyen Dinh Q.
Robert & Bosch GmbH
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