EP0602001B1 - Injecteur à commande électromagnétique - Google Patents

Injecteur à commande électromagnétique Download PDF

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Publication number
EP0602001B1
EP0602001B1 EP94101334A EP94101334A EP0602001B1 EP 0602001 B1 EP0602001 B1 EP 0602001B1 EP 94101334 A EP94101334 A EP 94101334A EP 94101334 A EP94101334 A EP 94101334A EP 0602001 B1 EP0602001 B1 EP 0602001B1
Authority
EP
European Patent Office
Prior art keywords
fuel inlet
inlet connector
valve
valve seat
injection 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.)
Expired - Lifetime
Application number
EP94101334A
Other languages
German (de)
English (en)
Other versions
EP0602001A2 (fr
EP0602001A3 (fr
Inventor
Peter Romann
Ferdinand Reiter
Rudolf Babitzka
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0602001A2 publication Critical patent/EP0602001A2/fr
Publication of EP0602001A3 publication Critical patent/EP0602001A3/fr
Application granted granted Critical
Publication of EP0602001B1 publication Critical patent/EP0602001B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • 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
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
    • 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
    • F02M51/0682—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 the body being hollow and its interior communicating with the fuel flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S239/00—Fluid sprinkling, spraying, and diffusing
    • Y10S239/90—Electromagnetically actuated fuel injector having ball and seat type valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor

Definitions

  • the invention relates to an electromagnetically actuated injection valve according to the preamble of patent claim 1.
  • valve according to the invention with the characterizing features of claim 1 has the advantage of simple manufacture and assembly, which allows inexpensive series production.
  • the example shown electromagnetically actuated injection valve for fuel injection systems of internal combustion engines has a fuel inlet connector 1 surrounded by a magnet coil 4 and serving as a core, which has a constant outer diameter, for example by means of centerless loops, over its entire length for the best possible use of space.
  • the magnet coil 4 with a coil body 2 is provided with a plastic encapsulation 7, at the same time an electrical connector plug 21 being molded, so that there is an independent plastic injection molded part containing the magnet coil 4 and the connector plug 21.
  • the magnet coil 4 which has a stepped coil body 2 in the radial direction with a winding 13 stepped in the radial direction, in conjunction with the fuel inlet connector 1 having a constant outer diameter, enables a short and compact structure of the injection valve, as will be explained below.
  • a tubular metallic intermediate part 6 is connected by welding concentrically to a longitudinal valve axis 5 and thereby overlaps the core end 3 partially axially with an upper cylinder section 41.
  • the stepped bobbin 2 partially overlaps the fuel inlet connector 1 and with a step 42 of larger diameter the cylinder section 41 of the intermediate part 6.
  • the intermediate part 6 is provided at its end facing away from the fuel inlet connection 1 with a lower cylinder section 43 which engages over a tubular connecting part 14 and is tightly connected thereto by welding.
  • a cylindrical valve seat body 8 is tightly mounted by welding. The lining up of fuel inlet connector 1, intermediate part 6, connecting part 14 and valve seat body 8 thus represents a rigid metal unit.
  • the valve seat body 8 has a constant outer diameter, for example formed by centerless grinding, so that the valve seat body 8 can be fully inserted into the connecting part 14 can and through the longer coverage better tightness between valve seat body 8 and the inner bore 30 of the connecting part 14 is achieved.
  • a tubular armature 12 is connected by welding, which is guided by a guide collar 15 of the intermediate part 6.
  • a valve closing body 10 which interacts with the valve seat 9 of the valve seat body 8, is connected to it, for example by soldering or welding, which is designed, for example, as a ball.
  • At least one spray opening 33 Downstream of the valve seat 9, at least one spray opening 33, for example formed by eroding, is formed in the valve seat body 8.
  • the weld 35 between the valve seat body 8 and the connecting part 14 is relatively far away from the spray opening (s) 33 and from the valve seat 9, so that there is an influence on the quantity and leakage is effectively prevented by a distortion of the valve seat body 8 occurring due to the high temperatures occurring during welding.
  • an axial gap 29 is formed, in which, by clamping, a residual air gap between the inlet-side end face 26 of the armature 12 and the end face 23 of the core end 3 forming, the stroke of the valve closing body 10 during the opening process of the valve limiting non-magnetic stop disc 27 is arranged.
  • the clamped stop disc 27 protects the end face 23 of the core end 3 because of its greater bending stiffness better from wear than a loose disc, in which there is a risk of tilting and uneven striking.
  • the magnet coil 4 is surrounded by at least one guide element 16, which is designed as a bracket in the exemplary embodiment and serves as a ferromagnetic element, which extends in the axial direction over the entire length of the magnet coil 4 and at least partially surrounds the magnet coil 4 in the circumferential direction and with one end thereof Fuel inlet connector 1 and with its other end on the connecting part 14 and z. B. is connected by welding.
  • a part of the valve is enclosed by a plastic sheathing 18, which extends axially from the fuel inlet connector 1, extends axially via the magnetic coil 4 with connector 21 and the at least one guide element 16, and thereby radially extending side faces of an annular groove provided on the circumference of the inlet-side end 44 of the fuel inlet connector 1 25 forms.
  • the groove base of the annular groove 25, which has a sealing ring 45, for example, is formed by the circumference of the fuel inlet connector 1.
  • the Plastic casing 18 engages in a holding groove 46 at the inlet end 44 of the fuel inlet connector 1.
  • the described plastic encapsulation 7 of the solenoid 4 in connection with the injection molded connector 21 allows a high flexibility in the assembly of differently designed valves, since only one extrusion tool is required for different connector 21 and solenoid 4 to produce the plastic casing 18.

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)
  • Magnetically Actuated Valves (AREA)
  • Electromagnets (AREA)

Claims (2)

  1. Injecteur à commande électromagnétique pour une installation d'injection de carburant de moteur à combustion interne, comprenant un ajutage d'arrivée de carburant (1) servant de corps et entouré par une bobine électromagnétique (4), un induit (12) pour actionner l'organe d'obturation (10) coopérant avec un siège de soupape fixe (9), un corps métallique (8) comportant le siège de soupape fixe (9), et une enveloppe en matière synthétique (18) entourant au moins une partie de l'injecteur, la périphérie de l'extrémité (44) de l'ajutage d'arrivée de carburant (1), du côté de l'arrivée, comportant une rainure annulaire (25) pour recevoir un joint d'étanchéité (45), le fond de cette rainure étant formé par la périphérie de l'ajutage d'arrivée de carburant (1), injecteur caractérisé en ce que les deux surfaces frontales radiales de la rainure annulaire (25) sont formées par l'enveloppe en matière synthétique (18).
  2. Injecteur de carburant selon la revendication 1, caractérisé en ce que l'extrémité d'arrivée (44) de l'ajutage d'arrivée de carburant (1) comporte une rainure de fixation (46) dans laquelle vient prendre un segment annulaire de l'enveloppe en matière synthétique (18) qui forme l'une des surfaces latérales s'étendant radialement de la rainure annulaire (25).
EP94101334A 1990-02-03 1991-01-21 Injecteur à commande électromagnétique Expired - Lifetime EP0602001B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4003228 1990-02-03
DE4003228A DE4003228A1 (de) 1990-02-03 1990-02-03 Elektromagnetisch betaetigbares ventil
EP91902298A EP0513037B1 (fr) 1990-02-03 1991-01-21 Soupape a commande electromagnetique

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP91902298.8 Division 1991-01-21

Publications (3)

Publication Number Publication Date
EP0602001A2 EP0602001A2 (fr) 1994-06-15
EP0602001A3 EP0602001A3 (fr) 1994-11-17
EP0602001B1 true EP0602001B1 (fr) 1996-04-10

Family

ID=6399369

Family Applications (2)

Application Number Title Priority Date Filing Date
EP94101334A Expired - Lifetime EP0602001B1 (fr) 1990-02-03 1991-01-21 Injecteur à commande électromagnétique
EP91902298A Expired - Lifetime EP0513037B1 (fr) 1990-02-03 1991-01-21 Soupape a commande electromagnetique

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP91902298A Expired - Lifetime EP0513037B1 (fr) 1990-02-03 1991-01-21 Soupape a commande electromagnetique

Country Status (9)

Country Link
US (3) US5275341A (fr)
EP (2) EP0602001B1 (fr)
JP (2) JP2986542B2 (fr)
KR (1) KR0185731B1 (fr)
BR (1) BR9105985A (fr)
DE (3) DE4003228A1 (fr)
ES (2) ES2086971T3 (fr)
RU (1) RU2092735C1 (fr)
WO (1) WO1991011611A2 (fr)

Families Citing this family (112)

* Cited by examiner, † Cited by third party
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WO1991011611A3 (fr) 1991-09-19
US6341412B1 (en) 2002-01-29
BR9105985A (pt) 1992-11-10
DE4003228A1 (de) 1991-08-22
ES2062761T3 (es) 1994-12-16
ES2086971T3 (es) 1996-07-01
DE4003228C2 (fr) 1992-11-26
US5580001A (en) 1996-12-03
EP0602001A2 (fr) 1994-06-15
DE59103119D1 (de) 1994-11-03
EP0513037A1 (fr) 1992-11-19
EP0602001A3 (fr) 1994-11-17
JPH05503976A (ja) 1993-06-24
US5275341A (en) 1994-01-04
DE59107672D1 (de) 1996-05-15
EP0513037B1 (fr) 1994-09-28
JP2986542B2 (ja) 1999-12-06
RU2092735C1 (ru) 1997-10-10
WO1991011611A2 (fr) 1991-08-08
KR0185731B1 (ko) 1999-03-20
JP3027353B2 (ja) 2000-04-04
JPH10122085A (ja) 1998-05-12
KR920703997A (ko) 1992-12-18

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