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1. WO2017022163 - FUEL INJECTION DEVICE

Publication Number WO/2017/022163
Publication Date 09.02.2017
International Application No. PCT/JP2016/002969
International Filing Date 21.06.2016
IPC
F02M 51/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
51Fuel-injection apparatus characterised by being operated electrically
06Injectors peculiar thereto
CPC
F02M 51/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
51Fuel-injection apparatus characterised by being operated electrically
06Injectors peculiar thereto ; with means directly operating the valve needle
F02M 51/061
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
51Fuel-injection apparatus characterised by being operated electrically
06Injectors peculiar thereto ; with means directly operating the valve needle
061using electromagnetic operating means
F02M 51/0653
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
51Fuel-injection apparatus characterised by being operated electrically
06Injectors peculiar thereto ; with means directly operating the valve needle
061using electromagnetic operating means
0625characterised by arrangement of mobile armatures
0635having a plate-shaped or undulated armature not entering the winding
0642the armature having a valve attached thereto
0653the valve being an elongated body, e.g. a needle valve
F02M 51/0671
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
51Fuel-injection apparatus characterised by being operated electrically
06Injectors peculiar thereto ; with means directly operating the valve needle
061using electromagnetic operating means
0625characterised by arrangement of mobile armatures
0664having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
0671the armature having an elongated valve body attached thereto
F02M 51/0675
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
51Fuel-injection apparatus characterised by being operated electrically
06Injectors peculiar thereto ; with means directly operating the valve needle
061using electromagnetic operating means
0625characterised by arrangement of mobile armatures
0664having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
0671the armature having an elongated valve body attached thereto
0675the valve body having cylindrical guiding or metering portions, e.g. with fuel passages
F02M 61/10
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
61Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
04having valves ; , e.g. having a plurality of valves in series
10Other injectors with elongated valve bodies, i.e. of needle-valve type
Applicants
  • 株式会社デンソー DENSO CORPORATION [JP]/[JP]
Inventors
  • 及川 忍 OIKAWA, Shinobu
  • 松川 智二 MATSUKAWA, Tomoji
  • 山本 辰介 YAMAMOTO, Shinsuke
  • 後藤 守康 GOTOH, Moriyasu
  • 伊藤 栄次 ITOH, Eiji
Agents
  • 金 順姫 KIN, Junhi
Priority Data
2015-15607006.08.2015JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) FUEL INJECTION DEVICE
(FR) DISPOSITIF D'INJECTION DE CARBURANT
(JA) 燃料噴射装置
Abstract
(EN)
A gap-forming member (60) has a plate section (61) provided to the side of a needle (30) that is opposite of a valve seat so that one end surface can come into contact with the needle (30), and an extended section (62) extending toward the valve seat from the plate section (61) and formed so that the end on the side opposite the plate section (61) can come into contact with a surface of a movable core (40) on a side facing a fixed core (50). When the plate section (61) is in contact with the needle (30) and the extended section (62) is in contact with the movable core (40), the gap-forming member (60) can form an axial gap (CL1), which is a gap in the axial direction between a ridge part (33) and the movable core (40). A first wall surface (601) of the gap-forming member (60), which is a wall surface facing an outer wall of the ridge part (33), is capable of sliding against the outer wall of the ridge part (33), and a second wall surface (602) of the gap-forming member (60), which is a wall surface that faces an inner wall of the fixed core (50), together with the inner wall of the fixed core (50) forms a diametral gap (CL2) which is a gap in the diametral direction.
(FR)
L'invention concerne un élément de formation d'espacement (60) présentant une section plaque (61) prévue sur le côté d'une aiguille (30) qui est opposée à un siège de soupape, de sorte qu'une surface d'extrémité puisse venir en contact avec l'aiguille (30) et une section étendue (62) s'étendant vers le siège de soupape depuis la section plaque (61) et formée de sorte que l'extrémité sur le côté opposé à la section plaque (61) puisse venir en contact avec une surface d'un noyau mobile (40) sur un côté faisant face à un noyau fixe (50). Lorsque la section plaque (61) est en contact avec l'aiguille (30) et que la section étendue (62) est en contact avec le noyau mobile (40), l'élément de formation d'espacement (60) peut former un espacement axial (CL1), qui est un espacement dans la direction axiale entre une partie crête (33) et le noyau mobile (40). Une première surface de paroi (601) de l'élément de formation d'espacement (60), qui est une surface de paroi faisant face à une paroi externe de la partie crête (33), est apte à coulisser contre la paroi externe de la partie crête (33) et une seconde surface de paroi (602) de l'élément de formation d'espacement (60), qui est une surface de paroi qui fait face à une paroi interne du noyau fixe (50), conjointement avec la paroi interne du noyau fixe (50), forme un espacement diamétral (CL2) qui est un espacement dans la direction diamétrale.
(JA)
隙間形成部材(60)は、一方の端面がニードル(30)に当接可能なようニードル(30)に対し弁座とは反対側に設けられる板部(61)、および、板部(61)から弁座側へ延び板部(61)とは反対側の端部が可動コア(40)の固定コア(50)側の面に当接可能に形成される延伸部(62)を有している。隙間形成部材(60)は、板部(61)がニードル(30)に当接し延伸部(62)が可動コア(40)に当接しているとき、鍔部(33)と可動コア(40)との間に軸方向の隙間である軸方向隙間(CL1)を形成可能である。隙間形成部材(60)は、鍔部(33)の外壁に対向する壁面である第1壁面(601)が鍔部(33)の外壁と摺動可能であり、固定コア(50)の内壁に対向する壁面である第2壁面(602)が固定コア(50)の内壁との間に径方向の隙間である径方向隙間(CL2)を形成する。
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