Leakless fuel injection nozzle and holder assembly

Details Leakless fuel injection nozzle and holder assembly Leakless fuel injection nozzle and holder assembly

1978-12-22

1981-05-12

Reeves, Robert B.

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

2395339, F02M 4702

Patent

active

042667283

ABSTRACT:
A fuel injection nozzle and holder assembly of conventional construction is made leakless by eliminating the leakoff passages from the spring chamber. An unreasonable buildup of leakage fuel pressure in the spring chamber is prevented by relieving the pressure in the fuel delivery passages between injection intervals to permit leakage from the spring chamber and a stabilization of the spring pressure. A continuously open passage is provided between the spring chamber and the valve bore to prevent a sealing of the spring chamber by the nozzle valve during the injection interval and thus provide a predictable spring chamber pressure augmenting the nozzle closing force of the spring.

REFERENCES:
patent: 2374614 (1945-04-01), Nichols
patent: 2507355 (1950-05-01), Sola
patent: 2556369 (1951-06-01), Hogeman
patent: 3451626 (1969-06-01), Roosa
patent: 3469793 (1969-09-01), Guertler
patent: 3738576 (1973-06-01), O'Neill
"Caterpillar 3400 Series Engines", Automotive Eng'g. Congress, Detroit, Mich., Feb. 25-Mar. 1, 1974, Pub. No. 740,038, Soc. Auto. Engineers, pp. 1 and 16.
"New Robert Bosch Developments for Diesel Fuel Injection", Automotive Eng'g. Congress, Detroit, Mich., Feb. 23-27, 1976, SAE Pub. No. 760,127, pp. 1, 9, 10.

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