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Fuel injector nozzle for an internal combustion engine

United States Patent

7,290,520
November 6, 2007
View the Complete Patent at the US Patent & Trademark Office
A direct injection fuel injector includes a nozzle tip having a plurality of passages allowing fluid communication between an inner nozzle tip surface portion and an outer nozzle tip surface portion and directly into a combustion chamber of an internal combustion engine. A first group of the passages have inner surface apertures located substantially in a first common plane. A second group of the passages have inner surface apertures located substantially in at least a second common plane substantially parallel to the first common plane. The second group has more passages than the first group.
Cavanagh; Mark S. (Bloomington, IL), Urven, Jr.; Roger L. (Colona, IL), Lawrence; Keith E. (Peoria, IL)
Caterpillar Inc (Peoria, IL)
11/ 353,998
20060231064
February 15, 2006
U.S. GOVERNMENT RIGHTS The U.S. Government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of Contract Nos. DE-FC05-00OR22806 and DE-FC05-97OR22605 awarded by the Department of Energy.