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:
Jul. 30, 2019
Filed:
Jun. 08, 2016
Denso Corporation, Kariya, Aichi-pref., JP;
Shinya Sano, Kariya, JP;
Kazufumi Serizawa, Kariya, JP;
Atsushi Utsunomiya, Kariya, JP;
Toshiaki Hijima, Nishio, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A throttle portion is defined between an upper end of a sac chamber and a conical portion of a needle to have a throttle opening area S. Half of an area surrounded by the throttle portion, the needle, an inner wall of the sac chamber, and a lower end extended line in a cross section of the sac chamber taken along a sac center line is an injection hole upstream area S. A lift amount, when the throttle opening area Sis equal to an area which is calculated by multiplying an injection hole area Sby the number of the injection holes, is a predetermined lift amount L. A viscosity coefficient of fuel is ρ. An index value Sa, which is calculated in accordance with an equation as below, is set to 0.5 or greater.