Curved hole machining method and fuel injector formed thereby

Details Curved hole machining method and fuel injector formed thereby Curved hole machining method and fuel injector formed thereby

1989-11-17

1991-07-09

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

2395332, 219 6917, F02M 6116, B23H 914

Patent

active

050297597

ABSTRACT:
A method of forming curvilinear injector spray holes to produce an improved spray from the nozzle tip of a fuel injector is provided. The method uses electrical discharge machining in combination with a novel electrode to form a plurality of curvilinear spray holes in the injector nozzle tip which direct the fuel spray from the nozzle to produce an efficient, enhanced spray. The novel EDM electrode is preferably formed in the configuration of a constant pitch helix having a radius substantially equal to the radius of curvature of the curvilinear spray hole.

REFERENCES:
patent: 2902584 (1959-09-01), Ullmann
patent: 3388232 (1968-06-01), Dreisin
patent: 3402279 (1968-09-01), Sazhin
patent: 3506800 (1970-04-01), O'Connor
patent: 3995134 (1976-11-01), Dudden
patent: 4069978 (1978-01-01), El Moussa
patent: 4465231 (1984-08-01), Sharp
"Effect of Spray Bore Design and Machining on Fuel Injector Performance" by Dr. Ing. G. M. Musso published by Diesel & Fas Trubine Worldwide.

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