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1. WO1996006275 - IMPROVED FLOW AREA ARMATURE FOR FUEL INJECTOR

Publication Number WO/1996/006275
Publication Date 29.02.1996
International Application No. PCT/US1995/010091
International Filing Date 09.08.1995
Chapter 2 Demand Filed 20.02.1996
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 51/0671
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
Applicants
  • SIEMENS AUTOMOTIVE CORPORATION [US/US]; 2400 Executive Hills Drive Auburn Hills, MI 48326-2980, US
Inventors
  • HALL, Bryan, C.; US
  • WIECZOREK, David; US
  • WYANT, Gordon, H.; US
Agents
  • WELLS, Russel, C.; Siemens Corporation 2400 Executive Hills Drive Auburn Hills, MI 48326-2980, US
  • FUCHS, Franz-Josef; Postfach 22 13 17 D-80503 Munich, DE
Priority Data
08/292,45718.08.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) IMPROVED FLOW AREA ARMATURE FOR FUEL INJECTOR
(FR) INDUIT A CIRCULATION AMELIOREE D'UN INJECTEUR DE CARBURANT
Abstract
(EN)
The armature (22) has a tubular wall bounding a main axial through-hole. The upper axial end (100) has a larger outside diameter than does the lower axial end (102). A portion of the tubular wall lying between these upper and lower ends has a frustoconical exterior surface (104). A single through-hole (124) extends through the tubular wall at this frustoconical surface to non-perpendicularly intersect the main axial through-hole (106). The upper end of a needle valve is inserted into the lower axial end (116) of the main through-hole (106), and the two parts are joined there by welding and/or crimping. The inserted end (130) of the needle valve (24) does not obstruct the single through-hole (124) extending through the tubular wall (112) so that fuel entering the armature via the open upper end of the main through-hole will change direction to pass out of the armature through the single through-hole (124) in the tubular wall.
(FR)
L'induit (22) présente une paroi tubulaire entourant un passage axial principal, et son extrémité axiale supérieure (100) présente un diamètre plus important que celui de l'extrémité axiale inférieure (102). Une partie de la paroi tubulaire située entre lesdites extrémités présente une surface extérieure conique (104). Un unique trou (124) traverse la paroi tubulaire à l'endroit où elle est conique et de ce fait coupe le passage axial (106) sous un angle non droit. L'extrémité supérieure d'un robinet à pointeau s'insère dans l'extrémité inférieure (116) du passage axial principal et les deux parties sont assemblées par soudage et/ou par sertissage. La partie insérée du robinet à pointeau (24) n'obstrue pas le trou (124) traversant la paroi tubulaire (112) si bien que le carburant pénétrant dans l'induit par l'extrémité supérieure ouverte du passage principal est dévié et contourne l'induit en empruntant le trou (124) pratiqué dans la paroi tubulaire.
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