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:
Feb. 07, 2017
Filed:
Jan. 20, 2015
Denso Corporation, Kariya, Aichi-pref., JP;
Toshiaki Hijima, Nishio, JP;
Fumiaki Arikawa, Okazaki, JP;
Motoya Kanbara, Nishio, JP;
Yuuta Hashimoto, Nishio, JP;
Atsushi Utsunomiya, Kitanagoya, JP;
Kazufumi Serizawa, Obu, JP;
Shinya Sano, Anjo, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
In a nozzle, in a cross section including an axis of a nozzle body, a side surface and a seat surface are both smoothly connected to an arc of a circle inscribing both the side surface and the seat surface. A part of a needle which is adjacent to a tip end side of a seat portion is a cone having a diameter reduced toward a tip end side of the cone in the axial direction. Thus, no corner is on the seat surface or the side surface, and the two surfaces form one curved surface. Since a cavitation generated in a sack chamber can be reduced, even when an injection quantity is significantly small such that an injection port does not throttle an injection flow, a flow coefficient of the injection flow is improved and a penetration of a spray of the fuel can be maintained.