EP0517004A1 - Injecteur de carburant à commande électrique en méthode de contact électrique - Google Patents

Injecteur de carburant à commande électrique en méthode de contact électrique Download PDF

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Publication number
EP0517004A1
EP0517004A1 EP92107956A EP92107956A EP0517004A1 EP 0517004 A1 EP0517004 A1 EP 0517004A1 EP 92107956 A EP92107956 A EP 92107956A EP 92107956 A EP92107956 A EP 92107956A EP 0517004 A1 EP0517004 A1 EP 0517004A1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
valve
injection valve
fuel
electrical contact
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
EP92107956A
Other languages
German (de)
English (en)
Other versions
EP0517004B1 (fr
Inventor
Udo Dipl.-Ing. Hafner (Fh)
Juergen Dipl.-Ing. Gras
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 EP0517004A1 publication Critical patent/EP0517004A1/fr
Application granted granted Critical
Publication of EP0517004B1 publication Critical patent/EP0517004B1/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
    • F02M51/005—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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
    • F02M61/145—Arrangements of injectors with respect to engines; Mounting of injectors the injection nozzle opening into the air intake conduit
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/20—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together
    • H01R13/213—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together by bayonet connection

Definitions

  • the invention is based on an electromagnetically actuated fuel injector and a method for making electrical contact with an electrically actuated fuel injector according to the preamble of claims 1 and 6, respectively.
  • an electrically actuated fuel injector is already known which can be rotated about its longitudinal axis can be attached to a fuel distributor by means of a bayonet catch.
  • the first electrical contact elements of the fuel injector which protrude from the valve housing parallel to the longitudinal valve axis are electrically contacted by second electrical contact elements which are arranged on a contact strip which can be placed on the fuel distributor in the direction of the longitudinal valve axis.
  • the electrical contacting of the known fuel injection valves requires a large structural volume and in particular a large structural height in the direction of their longitudinal valve axes, because the joining process of the contact strip having the second electrical contact elements in the direction of the first electrical contact elements of the fuel injection valves and thus in the direction of the valve longitudinal axes.
  • the electrically actuated fuel injector according to the invention with the characterizing features of claim 1 and the method for electrically contacting an electrically actuated fuel injector with the characterizing features of claim 6 have the advantage of a simple, very compact and reliable electrical contact. In this way, e.g. use the space available in the engine compartment of a motor vehicle, for example for an optimized intake manifold system.
  • the fuel injection valves according to the invention are very easy to assemble and make electrical contact in the same operation, so that the assembly costs are reduced.
  • the first electrical contact element extends in the radial direction perpendicular to the longitudinal axis of the valve.
  • FIG. 1 shows a fuel injector according to the exemplary embodiment according to the invention
  • FIG. 2 shows a view of the fuel injector in the direction of arrow X in FIG. 1
  • FIG. 3 shows a section along line III-III in FIG. 2 in the locked state of the fuel injector
  • FIG. 4 shows a section along the line IV-IV in Figure 2 in the locked state of the fuel injector
  • Figure 5 shows a section of an electrical connector for electrical contacting of the fuel injector along the line VV in Figure 2.
  • Electromagnetically actuated fuel injection valve 1 for fuel injection systems of, for example, mixture-compressing spark-ignition internal combustion engines.
  • the fuel injector 1 is divided into a continuous ⁇ e.g. a circular cross-section valve receiving opening 3 of a fuel distributor 5 serving as a valve receiving device is inserted and is at least partially surrounded by the wall of the valve receiving opening 3 in the direction of a longitudinal valve axis 7.
  • the fuel distributor 5 has, for example, an elongated shape running perpendicular to the plane of the drawing and a plurality of valve receiving openings 3. It is used to supply fuel to several fuel injection valves 1 and is e.g. arranged on an intake manifold 9 of an internal combustion engine.
  • the fuel injection valve 1 has, for example, two fuel supply openings 11 on the circumference of its valve housing 10, through which fuel can get into the interior of the fuel injection valve and which are arranged at least approximately at the same axial height of the valve longitudinal axis 7.
  • the fuel injector 1 has, at its other end serving as the connection end 17, for example two first electrical contact elements 19 which extend in the radial direction perpendicular to the valve longitudinal axis 7 beyond the circumference of the connection end 17 and which make electrical contact with the serve electrically actuated fuel injection valve 1 and which, for example, run in opposite directions and parallel to each other.
  • the first electrical contact elements 19 can have the form of band-shaped connector tongues.
  • a longitudinally extending fuel supply channel 81 is formed, which is used to supply fuel to the fuel injection valves 1 and is connected, for example, tangentially to the valve receiving openings 3 at an opening cross section 82.
  • an upper annular groove 83 is formed upstream of the fuel supply openings 11 and the opening cross section 82, and a lower annular groove 85 in the area of the injection piece 13 downstream of the fuel supply openings 11 and the opening cross section 82.
  • An upper sealing ring 87 is arranged in the upper annular groove 83 and a lower sealing ring 89 is arranged in the lower annular groove 85, which serve to seal between the circumference of the fuel injection valve 1 and the wall of the valve receiving opening 3.
  • a retaining flange 21 is formed on the valve housing 10 and extends outward in the radial direction.
  • the fuel injection valve 1 rests with a contact surface 22 of the holding flange 21 facing the injection piece 13 against a support surface 23 of a holding shoulder 25 of the stepped valve receiving opening 3 facing the holding flange.
  • two bayonet bolts 27 which extend radially outward beyond the circumference of the holding flange 21 and which, for example, are opposite to each other and extend in the circumferential direction only over part of the holding flange 21.
  • the two electrical contact elements 19 and the two bayonet bolts 27 are arranged offset in the circumferential direction, for example by 90 ° in each case.
  • the bayonet latches 27 are used to fasten the fuel injector 1 to the fuel distributor 5 by means of a bayonet catch 29, in that the fuel injector 1 is inserted into the valve receiving opening 3 of the fuel distributor 5 and fastened by rotating it about its valve longitudinal axis 7. Facing away from the injection piece 13 of the fuel injector 1, a bayonet lock 33 surrounding the valve receiving opening 3 is formed on the upper side 31 of the fuel distributor 5 in the axial direction between the upper end 31 and the holding shoulder 25 on the fuel distributor 5.
  • the bayonet lock 33 has, for example, two mutually opposite, partially circumferential recesses 35 in the wall of the valve receiving opening 3 for inserting the bayonet latch 27 of the fuel injection valve 1 in the direction of the valve longitudinal axis 7, which extend from the upper end face 31 to the holding shoulder 25 .
  • the recesses 35 are joined by overlapping sections 37, which each encompass the bayonet bolts 27 with a groove 38 formed in the wall of the valve receiving opening 3 and extending in the circumferential direction.
  • stops 39 are provided for the bayonet bolts 27.
  • the stops 39 define the rotational position of the fuel injector 1 in the valve receiving opening 3 of the fuel distributor 5 and thus the injection geometry of the fuel injector 1.
  • the extension of the bayonet bolts 27 in the circumferential direction of the fuel injector is dimensioned, for example, such that when the bayonet bolts 27 abut the stops 39, the bayonet bolts 27 are completely covered by the overlapping sections 37 and are flush with the overlapping sections 37 toward the recesses 35.
  • one of the number of the first electrical contact elements 19 of the fuel injector 1 to be contacted that is to say, for example, two electrical connecting plugs 43 are arranged near the circumference of the valve receiving opening 3, which are for example made of a plastic and each have a second electrical one Have contact element 45.
  • the connector 43 have perpendicular to the valve longitudinal axis 7, in the circumferential direction in the direction of assembly open, for example the shape of slots having plug openings 47 through which the elongated first electrical contact elements 19 in the connector 43 by the rotation of the fuel injector 1 around it Longitudinal axis 7 are partially insertable. In this way, an electrically conductive connection between the second electrical contact elements 45 of the connecting plug 43 and the first electrical contact elements 19 of the fuel injection valves 1 and thus the electrical contacting of the fuel injection valves 1 is established.
  • the e.g. Connector 43 shown in FIG. 5 can for example be part of the fuel distributor 5, for example molded onto the upper end face 31 of the fuel distributor 5 or formed as an independent component and then connected to the fuel distributor 5 by means of a snap connection, a clamp connection or an adhesive connection, for example.
  • a carrier part 51 is arranged, for example, between two adjacent valve receiving openings 3, which serves to fix the position of electrical conductors 53.
  • the electrical conductors 53 are electrically conductively connected to the second electrical contact elements 45 of the connector plugs 43 and serve to make electrical contact with the fuel injection valves 1.
  • the electrical conductors 53 can be provided with an electrically insulating sheath 55 surrounding them.
  • the carrier parts 51 are e.g.
  • the electrical conductors 53 are arranged in the longitudinal grooves 59 and for example partially protrude from the longitudinal grooves 59 in the direction of the valve longitudinal axes 7 beyond the receiving side 57.
  • the fuel distributor 5 is covered on its upper side, which has the electrical connecting plug 43, by a cover hood 65 which extends in the longitudinal direction of the fuel distributor 5.
  • the cover hood 65 which has, for example, a trough-shaped cross section, has a central cover part 67 which extends perpendicular to the longitudinal axis 7 of the valve. On the side, the cover part 67 is followed by a first leg 69 and a second leg 71, the run at right angles to the cover part 67 and parallel to the valve longitudinal axis 7.
  • the covering hood 65 covers the part of the fuel injector 1 protruding from the valve receiving opening 3 with its first electrical contact elements 19, the carrier parts 51 and the electrical connecting plug 43 and closes off the valve receiving opening 3.
  • the legs 69, 71 partially surround the fuel distributor 5 on its sides facing the legs and have latching tabs 73 at their ends facing away from the cover part 67.
  • the locking lugs 73 encompass radially outward-pointing retaining shoulders 74 of the fuel distributor 5 and thus enable an easy to manufacture and reliable connection between the cover hood 65 and the fuel distributor 5.
  • a hold-down element 76 is arranged between the cover part 67 of the cover hood 65 and the receiving side 57 of the carrier part 51 having the longitudinal grooves 59.
  • the hold-down element 76 has such a large extension in the direction of the longitudinal axes 7 of the valve that, with its end face 78 facing the carrier part 51, it holds down the electrical conductors 53 arranged in the longitudinal grooves 59 of the carrier part 51 and thus the electrical conductors 53 slide out of the longitudinal grooves 59 e.g. simply and effectively prevented by vibrations caused during the operation of an internal combustion engine.
  • the support member 51 is formed as a separate component and is fixed in the longitudinal grooves 59 on the cover 65 after mounting the electrical conductor 53, so that a cover 65, electrical conductors 53, hold-down element 76 and support part 51 is present Pre-assembled component is formed, which can be placed on the fuel distributor 5 in the valve receiving openings 3 after the assembly of the fuel injection valves 1.
  • the fuel injector 1 with its bayonet bolts 27 is inserted into the valve receiving opening 3 of the fuel distributor 5 until the bayonet bolts 27 abut the retaining shoulder 25 of the fuel distributor. Thereafter, the fuel injector 1 is turned as far as its longitudinal axis 7 in a predetermined direction of rotation, e.g. rotated clockwise until the bayonet latch 27 of the fuel injection valve 1 abuts the stops 39 of the bayonet lock 33.
  • the rotary movement makes electrical contact with the fuel injector 1 at the same time, by inserting the first electrical contact elements 19, which extend outward in the radial direction perpendicular to the longitudinal axis 7 of the valve, into the electrical connector 43 arranged on the fuel distributor 5 and the connector 43 with the second electrical contact elements 45 be electrically connected.
  • two locking pins 95 are formed for each bayonet lock 29, which protrude in the direction of the longitudinal valve axis 7 beyond the contact surface 93.
  • the locking pins 95 engage positively in the recesses 35 of the bayonet lock 33. In this way, the locking pins 95 prevent the bayonet bolts 27 and thus the fuel injection valve 1 from turning back against the direction of assembly rotation, and thus fix it in the valve receiving opening 3 used fuel injector 1 both in the axial direction and in the direction of rotation.
  • the fuel injection valve 1 according to the invention with the first projecting in the radial direction beyond the circumference of the valve housing 10 electrical contact elements 19 enables simple, very compact and reliable electrical contacting.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP92107956A 1991-06-06 1992-05-12 Injecteur de carburant à commande électrique en méthode de contact électrique Expired - Lifetime EP0517004B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4118512 1991-06-06
DE4118512A DE4118512A1 (de) 1991-06-06 1991-06-06 Elektrisch betaetigbares brennstoffeinspritzventil und verfahren zu dessen elektrischer kontaktierung

Publications (2)

Publication Number Publication Date
EP0517004A1 true EP0517004A1 (fr) 1992-12-09
EP0517004B1 EP0517004B1 (fr) 1995-08-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP92107956A Expired - Lifetime EP0517004B1 (fr) 1991-06-06 1992-05-12 Injecteur de carburant à commande électrique en méthode de contact électrique

Country Status (4)

Country Link
US (2) US5226391A (fr)
EP (1) EP0517004B1 (fr)
JP (1) JP3129520B2 (fr)
DE (2) DE4118512A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2739743A1 (fr) * 1995-10-09 1997-04-11 Loisel Yves Boitier de protection et de gestion a distance
WO2002061267A1 (fr) * 2001-01-29 2002-08-08 Robert Bosch Gmbh Soupape d'injection pour tuyau d'aspiration ou tete de cylindre a alimentation en carburant integree

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DE4109653A1 (de) * 1991-03-23 1992-09-24 Bosch Gmbh Robert Kontaktierungsleiste zur gemeinsamen elektrischen kontaktierung mehrerer elektrisch betaetigbarer brennstoffeinspritzventile
DE4128086A1 (de) * 1991-08-24 1993-02-25 Bosch Gmbh Robert Brennstoffverteiler
US5363825A (en) * 1993-01-27 1994-11-15 Volkswagen Ag Fuel injection arrangement for an internal combustion engine having a plurality of electric fuel injection valves
US5471961A (en) * 1993-09-02 1995-12-05 Siemens Automotive L.P. Electrical circuitry of a fuel rail assembly
DE4329774A1 (de) * 1993-09-03 1995-03-09 Bosch Gmbh Robert Vorrichtung zur Befestigung und Sicherung eines Ventils
US5447140A (en) * 1993-12-20 1995-09-05 General Motors Corporation Fuel injection
US5568798A (en) * 1995-06-08 1996-10-29 Siemens Automotive Corporation Plastic fuel rail having integrated electrical wiring
US5616037A (en) * 1995-08-04 1997-04-01 Siemens Automotive Corporation Fuel rail with combined electrical connector and fuel injector retainer
US5718206A (en) * 1995-10-12 1998-02-17 Nippondenso Co., Ltd. Fuel supply system having fuel rail
US5575264A (en) * 1995-12-22 1996-11-19 Siemens Automotive Corporation Using EEPROM technology in carrying performance data with a fuel injector
US5598824A (en) * 1996-04-15 1997-02-04 Ford Motor Company Fuel delivery system for an internal combustion engine
DE19647586A1 (de) * 1996-11-18 1998-05-20 Bosch Gmbh Robert Verteilereinrichtung für Brennstoffeinspritzanlagen
US5743235A (en) * 1996-11-22 1998-04-28 Lueder; Lawrence Arimidio Molded-in wiring for intake manifolds
US5752487A (en) 1997-06-11 1998-05-19 Caterpillar Inc. Injector combustion gas seal
DE19734970A1 (de) 1997-08-13 1999-02-18 Volkswagen Ag Bauteil für ein Kraftfahrzeug, vorzugsweise ein Zylinderkopf einer Brennkraftmaschine
US6053148A (en) * 1998-02-21 2000-04-25 Ford Motor Company Intake manifold for an internal combustion engine
US7603684B1 (en) 1998-05-19 2009-10-13 United Video Properties, Inc. Program guide system with video-on-demand browsing
US6325049B1 (en) 1999-06-23 2001-12-04 Siemens Automotive Corporation Fuel injector with orientation feature for orienting injector with respect to the manifold or head
AU7575000A (en) * 1999-09-10 2001-04-10 International Engine Intellectual Property Company, Llc Actuating fluid delivery system for a fuel injector
US6513491B1 (en) 1999-10-15 2003-02-04 Siemens Vdo Automotive Inc. Electronic throttle control linkage with limp home mechanism
US6494174B1 (en) 1999-10-29 2002-12-17 Siemens Vdo Automotive Inc. Wiring harness assembly for an intake manifold
US6308686B1 (en) 1999-11-18 2001-10-30 Siemens Canada Limited Intake manifold with internal fuel rail and injectors
US6422205B2 (en) * 2000-01-27 2002-07-23 Siemens Automotive Corporation Twist off pressure regulator connector assembly
US6418912B1 (en) 2000-12-18 2002-07-16 Siemens Automotive Corporation HPDI injector and packaging
US6748926B2 (en) * 2002-06-28 2004-06-15 Siemens Vdo Automotive Inc. Modular fuel injection pack
US6666190B1 (en) 2003-01-03 2003-12-23 Ford Global Technologies, Llc Integrated fuel delivery and electrical connection for electronic fuel injectors
US7438055B1 (en) * 2007-07-11 2008-10-21 Delphi Technologies, Inc Fuel injector to fuel rail connection
DE102008055105A1 (de) * 2008-12-22 2010-07-01 Robert Bosch Gmbh Brennstoffeinspritzvorrichtung
DE102011002996A1 (de) * 2011-01-21 2012-07-26 Robert Bosch Gmbh Kraftstoffeinspritzventil mit verbessertem Hochdruckanschluss
DE102013019815A1 (de) 2013-11-26 2015-05-28 Daimler Ag Steckerelement zum elektrischen Kontaktieren eines Einspritzelements sowie Befestigungsanordnung eines Einspritzelements an einem Bauelement einer Verbrennungskraftmaschine
GB201408060D0 (en) * 2014-05-07 2014-06-18 Delphi Int Operations Lux Srl Connector assembly for a fuel injector
DE102016225941B4 (de) * 2016-12-22 2018-08-09 Conti Temic Microelectronic Gmbh Vorrichtung zum Verbinden zweier elektrischer Module, Verbindungselemente und Bausatz für eine Motorbaugruppe

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2739743A1 (fr) * 1995-10-09 1997-04-11 Loisel Yves Boitier de protection et de gestion a distance
WO2002061267A1 (fr) * 2001-01-29 2002-08-08 Robert Bosch Gmbh Soupape d'injection pour tuyau d'aspiration ou tete de cylindre a alimentation en carburant integree

Also Published As

Publication number Publication date
EP0517004B1 (fr) 1995-08-23
JPH05172017A (ja) 1993-07-09
DE59203341D1 (de) 1995-09-28
DE4118512A1 (de) 1992-12-10
JP3129520B2 (ja) 2001-01-31
US5226391A (en) 1993-07-13
US5323749A (en) 1994-06-28

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EP4331061A1 (fr) Connecteur pour systèmes d'amorçage de coussins gonflables

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