EP1046809A3 - Fluid metering device - Google Patents

Fluid metering device Download PDF

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Publication number
EP1046809A3
EP1046809A3 EP00107401A EP00107401A EP1046809A3 EP 1046809 A3 EP1046809 A3 EP 1046809A3 EP 00107401 A EP00107401 A EP 00107401A EP 00107401 A EP00107401 A EP 00107401A EP 1046809 A3 EP1046809 A3 EP 1046809A3
Authority
EP
European Patent Office
Prior art keywords
chamber
metering device
fluid metering
housing
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00107401A
Other languages
German (de)
French (fr)
Other versions
EP1046809B1 (en
EP1046809A2 (en
Inventor
Andreas Dr. Kappel
Bernhard Fischer
Bernhard Dr. Gottlieb
Randolf Dr. Mock
Eric Chemisky
Hans Prof. Meixner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1046809A2 publication Critical patent/EP1046809A2/en
Publication of EP1046809A3 publication Critical patent/EP1046809A3/en
Application granted granted Critical
Publication of EP1046809B1 publication Critical patent/EP1046809B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/08—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/167—Means for compensating clearance or thermal expansion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0057—Means for avoiding fuel contact with valve actuator, e.g. isolating actuators by using bellows or diaphragms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Die wesentlichen Elemente einer Fluiddosiervorrichtung bzw. eines Hochdruckinjektors sind ein Gehäuse (1), eine darin befindliche unter Fluiddruck stehende Kammer (13) und eine durch die Kammer (13) hindurchgeführte Ventilnadel, deren erstes Ende (22) außerhalb der Kammer (13) mit einem Hub beaufschlagbar ist und deren zweites Ende (23) mit einem am Gehäuse (1) positionierten Ventilsitz ein mit der Kammer (13) in Verbindung stehendes Ventil bildet. Als Durchführungselement für die Ventilnadel (3) an deren erstem Ende (22) wird ein Metallbalg (17) eingesetzt, der hermetisch abdichtet und nur geringe axiale druckbedingte Kräfte erzeugt.

Figure 00000001
The essential elements of a fluid metering device or a high-pressure injector are a housing (1), a chamber (13) located therein under fluid pressure and a valve needle passed through the chamber (13), the first end (22) of which is outside the chamber (13) a stroke can be acted upon and the second end (23) of the valve seat positioned on the housing (1) forms a valve connected to the chamber (13). A metal bellows (17) is used as a lead-through element for the valve needle (3) at its first end (22), which hermetically seals and generates only slight axial pressure-related forces.
Figure 00000001
EP00107401A 1999-04-20 2000-04-05 Fluid metering device Expired - Lifetime EP1046809B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19917839 1999-04-20
DE19917839 1999-04-20

Publications (3)

Publication Number Publication Date
EP1046809A2 EP1046809A2 (en) 2000-10-25
EP1046809A3 true EP1046809A3 (en) 2003-06-18
EP1046809B1 EP1046809B1 (en) 2005-08-10

Family

ID=7905207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00107401A Expired - Lifetime EP1046809B1 (en) 1999-04-20 2000-04-05 Fluid metering device

Country Status (3)

Country Link
US (1) US6311950B1 (en)
EP (1) EP1046809B1 (en)
DE (1) DE50010902D1 (en)

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Also Published As

Publication number Publication date
US6311950B1 (en) 2001-11-06
EP1046809B1 (en) 2005-08-10
DE50010902D1 (en) 2005-09-15
EP1046809A2 (en) 2000-10-25

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