Fluid sprinkling – spraying – and diffusing – Unitary injection nozzle and pump or accumulator plunger
Patent
1984-08-20
1986-02-25
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Unitary injection nozzle and pump or accumulator plunger
239 96, 239125, 239585, F02M 4702, F02M 5500
Patent
active
045724334
ABSTRACT:
An electromagnetic unit fuel injector for use in a multi-cylinder diesel engine has an externally actuated pump for intensifying the pressure of fuel delivered to a pressure actuated injection valve controlling flow discharge out through a spray outlet and which is normally biased to a closed position by a spring. Pressurized fuel from the pump is also supplied via a throttling orifice to a modulated pressure servo control chamber having a servo piston means operatively associated with the injection valve. A drain passage extends from the servo control chamber with flow therethrough controlled by a solenoid actuated control valve in the form of a poppet valve which is normally biased to a closed position by a valve return spring of predetermined force whereby the control valve is also operative as a pressure relief valve and preferably, a secondary pressure relief valve means is also incorporated into the unit injector so that all of the unit injectors for the engine will operate at a uniform maximum peak pressure.
REFERENCES:
patent: 4129255 (1978-12-01), Bader, Jr. et al.
patent: 4129256 (1978-12-01), Bader et al.
patent: 4392612 (1983-07-01), Deckard et al.
patent: 4408718 (1983-11-01), Wich
patent: 4463900 (1984-08-01), Wich
patent: 4470545 (1984-09-01), Deckard et al.
patent: 4482094 (1984-11-01), Knape
patent: 4485969 (1984-12-01), Deckard et al.
patent: 4527737 (1985-07-01), Deckard
Pending U.S. patent application Ser. No. 595,694, filed Apr. 2, 1984, in the names of John I. Deckard; Richard F. Teerman and Russell H. Bosch.
General Motors Corporation
Jones Mary Beth O.
Kashnikow Andres
Krein Arthur N.
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