| US 7,527,038 B2 | ||
| Method and apparatus for attenuating fuel pump noise in a direct injection internal combustion chamber | ||
| Atsushi Watanabe, Novi, Mich. (US); Atsushi Hohkita, Novi, Mich. (US); Masahiro Soma, Danville, Ky. (US); and Hiroaki Saeki, West Bloomfield, Mich. (US) | ||
| Assigned to Hitachi, Ltd, Tokyo (Japan) | ||
| Filed on Jul. 02, 2008, as Appl. No. 12/166,760. | ||
| Application 12/166760 is a continuation in part of application No. 11/695195, filed on Apr. 02, 2007, granted, now 7,406,946. | ||
| Prior Publication US 2008/0264386 A1, Oct. 30, 2008 | ||
| Int. Cl. F02M 61/14 (2006.01); F02M 61/18 (2006.01) | ||
| U.S. Cl. 123—470 | 13 Claims |
| 1. For use in conjunction with a direct injection internal combustion engine having at least one fuel rail, an engine block,
a combustion chamber in the engine block and a passageway in the engine block to the combustion chamber, a direct injection
nozzle assembly comprising:
a direct injection fuel injector having a main body with a fuel inlet and a tip with a fuel outlet,
an injector cup secured to the fuel rail, said injector cup having an open end cavity in fluid communication with the fuel
rail and dimensioned to receive a portion of said main body of said fuel injector, and
an injector holder assembly which secures said fuel injector to the injector cup so that said nozzle tip of said fuel injector
is positioned within but spaced from the engine block passageway, wherein said injector holder assembly comprises a clip holder
attached to said injector cup and a clip plate attached to said clip holder, said clip plate having a portion in abutment
with an abutment surface on said fuel injector main body so that said clip plate supports said fuel injector against movement
towards the engine block.
|