FUEL INJECTION VALVE AND METHOD FOR MANUFACTURING SAME

PROBLEM TO BE SOLVED: To provide an orifice satisfying demands for a complicated shape orifice meeting objectives of increase of spray accuracy and functionality of a fuel injection valve, and increasing demand for atomization of spray, and a method for manufacturing the same. SOLUTION: A part of a...

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Bibliographic Details
Main Authors HIGUMA MASATO, TSUNEISHI MINORU, YUKITA HISASHI, KAWAHARA KEIJI, GUNJI KENICHI
Format Patent
LanguageEnglish
Published 01.03.2007
Subjects
BLASTING
COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF
TRANSPORTING
WEAPONS
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Summary:PROBLEM TO BE SOLVED: To provide an orifice satisfying demands for a complicated shape orifice meeting objectives of increase of spray accuracy and functionality of a fuel injection valve, and increasing demand for atomization of spray, and a method for manufacturing the same. SOLUTION: A part of a downstream side inner wall of the orifice in the fuel injection valve is inclined to a center axis line side of the orifice in relation to an upstream side inner wall. Shape of spray can be arbitrarily changed by changing angles of an inclination part and a section forming the inclination part. Also, fuel flowing in the orifice is pressed against the inclination part and easily forms thin film, and spray can be atomized. The orifice can be accurately formed by combining pressing and coining. COPYRIGHT: (C)2007,JPO&INPIT
Bibliography:Application Number: JP20050236574