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:
May. 25, 2010
Filed:
Feb. 08, 2007
Masayoshi Usui, Numazu, JP;
Eiji Watanabe, Shizuoka, JP;
Hikari Tsuchiya, Gotenba, JP;
Yoshiyuki Serizawa, Mishima, JP;
Kazuteru Mizuno, Numazu, JP;
Koichi Hayashi, Mishima, JP;
Tetsuo Ogata, Sunto-gun, JP;
Masayoshi Usui, Numazu, JP;
Eiji Watanabe, Shizuoka, JP;
Hikari Tsuchiya, Gotenba, JP;
Yoshiyuki Serizawa, Mishima, JP;
Kazuteru Mizuno, Numazu, JP;
Koichi Hayashi, Mishima, JP;
Tetsuo Ogata, Sunto-gun, JP;
Usui Kokusai Sangyo Kaisha, Ltd., Shizuoka-ken, JP;
Abstract
A fuel delivery pipe capable of reducing a pressure pulsation at the time of a fuel injection due to injection nozzles, preventing vibrations and noises at an underfloor pipe arrangement, and turning down a radiate sound from the fuel delivery pipe, wherein a flexible absorbing wall surfaceformed on a wall surface of a fuel delivery bodyis loosened due to internal pressure changes to render internal volume of the fuel delivery bodyincreasable, α/√{square root over ( )}V determined by sonic speed αof fuel flowing through the fuel delivery bodyand the internal volume V of the fuel delivery bodyis set as 20×10(m·sec)≦α/√{square root over ( )}V≦85×10(m·sec) while a ratio α/αof equivalent sonic speed αin a high frequency area to the sonic speed αof the fuel is set as α/α≦0.7, and the cross section shape in a perpendicular direction to an axis of the fuel delivery bodyis formed in a substantially double side concaved shape, a substantially flask shape, a substantially trapezoid shape, a substantially key shape, and a substantially goggles shape.