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1. WO1996003579 - VALVE NEEDLE FOR AN ELECTROMAGNETIC VALVE AND METHOD OF PRODUCING THE SAME

Publication Number WO/1996/003579
Publication Date 08.02.1996
International Application No. PCT/DE1995/000825
International Filing Date 27.06.1995
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
F02M 61/16 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
61Fuel injectors not provided for in groups F02M39/-F02M57/94
16Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02-F02M61/14132
F16K 31/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
31Operating means; Releasing devices
02electric; magnetic
06using a magnet
CPC
F02M 51/0682
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
0682the body being hollow and its interior communicating with the fuel flow
F02M 61/168
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
16Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
168Assembling; Disassembling; Manufacturing; Adjusting
F16K 31/0651
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
31Actuating devices;; Operating means; Releasing devices
02electric
06using a magnet ; , e.g. diaphragm valves, cutting off by means of a liquid
0644One-way valve
0651the fluid passing through the solenoid coil
F16K 31/0655
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
31Actuating devices;; Operating means; Releasing devices
02electric
06using a magnet ; , e.g. diaphragm valves, cutting off by means of a liquid
0644One-way valve
0655Lift valves
Y10S 239/90
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
239Fluid sprinkling, spraying, and diffusing
90Electromagnetically actuated fuel injector having ball and seat type valve
Y10T 29/49307
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
29Metal working
49Method of mechanical manufacture
49229Prime mover or fluid pump making
49298Poppet or I.C. engine valve or valve seat making
49307Composite or hollow valve stem or head making
Applicants
  • ROBERT BOSCH GMBH [DE/DE]; Postfach 30 02 20 D-70442 Stuttgart, DE (AllExceptUS)
  • REITER, Ferdinand [DE/DE]; DE (UsOnly)
  • SEFZ, Werner [DE/DE]; DE (UsOnly)
  • DORSCH, Ludwig [DE/DE]; DE (UsOnly)
Inventors
  • REITER, Ferdinand; DE
  • SEFZ, Werner; DE
  • DORSCH, Ludwig; DE
Priority Data
P 44 26 006.722.07.1994DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VENTILNADEL FÜR EIN ELEKTROMAGNETISCH BETÄTIGBARES VENTIL UND VERFAHREN ZUR HERSTELLUNG
(EN) VALVE NEEDLE FOR AN ELECTROMAGNETIC VALVE AND METHOD OF PRODUCING THE SAME
(FR) POINTEAU POUR SOUPAPE A ACTIONNEMENT ELECTROMAGNETIQUE ET SON PROCEDE DE PRODUCTION
Abstract
(DE)
Bei bekannten elektromagnetisch betätigbaren Ventilen besteht die Ventilnadel aus einem rohrförmigen Anker, einem hülsenförmigen Verbindungsrohr und einem Ventilschließglied. Der Brennstoff strömt dabei im Inneren der Ventilnadel bis zum Ventilschließglied und tritt dann über Querbohrungen in der Ventilnadel in Richtung zum Ventilsitz aus. Die neue Ventilnadel (18) zeichnet sich dadurch aus, daß zumindest ein Ventilnadelabschnitt (19) und ein Ventilschließgliedabschnitt (24) der Ventilnadel (18) als ein Teil durch Tiefziehen hergestellt sind. Um ein Strömen des Brennstoffs in Richtung des Ventilsitzes (30) zu gewährleisten, sind im Ventilnadelabschnitt (19) z.B. zwei Sicken (61) vorgesehen, während am eine Halbkugelschalenform aufweisenden Ventilschließgliedabschnitt (24) Abflachungen (25) ausgeformt sind. Der Brennstoff strömt so am äußeren Umfang des Ventilnadelabschnitts (19) entlang. Die Ventilnadel eignet sich besonders für Einspritzventile in Brennstoffeinspritzanlagen von gemischverdichtenden fremdgezündeten Brennkraftmaschinen.
(EN)
With known electromagnetic valves, the valve needle consists of a tubular armature, a sleeve-shaped connection tube and a valve closure member. The fuel flows inside the valve needle to the valve closure member and then emerges via transverse bores in the valve needle in the direction of the valve seat. The novel valve needle (18) is characterised in that at least one valve needle section (19) and a valve closure member section (24) of the valve needle (18) are produced in one part by deep-drawing. In order to ensure that fuel flows in the direction of the valve seat (30), the valve needle section (19) has two beads (61), for example, whilst flattened sections (25) are formed on a valve closure member section (24) which has a semi-spherical shell shape. Thus the fuel flows along the outer periphery of the valve needle section (19). The valve needle is particularly suitable for injection valves in the fuel injection systems of compressed mixture, spark-ignition internal combustion engines.
(FR)
Dans les soupapes à actionnement électromagnétique connues, le pointeau se compose d'un induit tubulaire, d'un tube de jonction se présentant sous forme de manchon et d'un élément de fermeture de soupape. Le carburant circule à l'intérieur du pointeau jusqu'à l'élément de fermeture de la soupape et entre ensuite dans le pointeau de soupape par l'intermédiaire d'alésages transversaux, en direction du siège de soupape. Ce nouveau pointeau de soupape (18) se caractérise en ce qu'au moins une section du pointeau de soupape (19) et une section de l'élément de fermeture de soupape ne forment qu'une seule pièce obtenue par emboutissage. Afin d'assurer la circulation du carburant en direction du siège de soupape (30), il est prévu de pratiquer dans la section du pointeau de soupape (19), par ex. deux moulures (61), la section de l'élément de fermeture de soupape (24) qui est hémisphérique présentant quant à elle des méplats (25). Le carburant circule ainsi le long de la périphérie extérieure de la section du pointeau de soupape (19). Le pointeau de soupape est particulièrement approprié aux soupapes d'injection de systèmes d'injection de carburant pour moteurs à combustion interne à allumage extérieur qui compriment le mélange.
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