The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 2007
Filed:
Dec. 28, 2004
Motoyuki Abe, Chiyoda, JP;
Yoshio Okamoto, Minori, JP;
Yuzo Kadomukai, Ishioka, JP;
Makoto Yamakado, Tsuchiura, JP;
Ayumu Miyajima, Narita, JP;
Hiromasa Kubo, Yokohama, JP;
Toru Ishikawa, Kitaibaraki, JP;
Yasuo Namaizawa, Kashima, JP;
Motoyuki Abe, Chiyoda, JP;
Yoshio Okamoto, Minori, JP;
Yuzo Kadomukai, Ishioka, JP;
Makoto Yamakado, Tsuchiura, JP;
Ayumu Miyajima, Narita, JP;
Hiromasa Kubo, Yokohama, JP;
Toru Ishikawa, Kitaibaraki, JP;
Yasuo Namaizawa, Kashima, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Using a swirl type fuel injection valve, a concentrated spray area and a thin spray area are formed, the positions thereof are adjusted, and the spray is made to conform to the geometric shape of the engine and mounting position of the fuel injection valve, so as to reduce the fuel consumption and control the unburnt components in exhaust gas. The fuel injection valve is so constructed that a step is formed on the injection hole opening of the fuel injection valve, so as to provide two or more edge transition portions at the injection hole opening, resulting from the step, and the line connecting the edge transition portions forms an oblique angle relative to the wall formed by the step perpendicular to the injection hole center axis and the angled wall.