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:
Dec. 23, 2003
Filed:
Oct. 22, 2001
Masaaki Kubo, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
In a fuel injector with a swirler creating swirling fuel flow, a projected portion is formed as an orifice nozzle tip at an opening end of a nozzle hole. The projected portion includes a first sloped portion having a sloped surface whose height h1, measured in the orifice-axis direction, is dimensioned to gradually increase along the swirling-fuel-flow direction, and a second sloped portion having a sloped surface whose height h2, measured in the orifice-axis direction, is dimensioned to gradually decrease along the swirling-fuel-flow direction. In a &thgr;-h coordinate system constructed by a &thgr;-axis representing the angular position of the orifice nozzle tip and a h-axis representing the axial height of the projected portion, the projected portion is dimensioned so that the absolute value |dh1/d&thgr;| of the gradient of the first sloped surface is dimensioned to be less than the absolute value |dh2/d&thgr;| of the gradient of the second sloped surface.