EP0469099A1 - Reglette pour le contact électrique simultane d'une pluralité d'injecteurs de carburant électromagnetiques. - Google Patents

Reglette pour le contact électrique simultane d'une pluralité d'injecteurs de carburant électromagnetiques.

Info

Publication number
EP0469099A1
EP0469099A1 EP19910901698 EP91901698A EP0469099A1 EP 0469099 A1 EP0469099 A1 EP 0469099A1 EP 19910901698 EP19910901698 EP 19910901698 EP 91901698 A EP91901698 A EP 91901698A EP 0469099 A1 EP0469099 A1 EP 0469099A1
Authority
EP
European Patent Office
Prior art keywords
contact strip
contact
electrically conductive
connector housing
strip
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
EP19910901698
Other languages
German (de)
English (en)
Other versions
EP0469099B1 (fr
Inventor
Heinz Ehrentraut
Udo Hafner
Helmut Bassler
Ferdinand Reiter
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
Priority to AT91901698T priority Critical patent/ATE103372T1/de
Publication of EP0469099A1 publication Critical patent/EP0469099A1/fr
Application granted granted Critical
Publication of EP0469099B1 publication Critical patent/EP0469099B1/fr
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
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • 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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
    • 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
    • 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

Definitions

  • the invention is based on a contact strip according to the claims 1 and 2.
  • a device is already known in which the fuel injectors are accommodated in common receiving openings of a fuel distributor piece and together be contacted electrically by means of a contact strip.
  • a number of plug housings corresponding to the number of fuel injection valves, in which first electrically conductive contact elements which can be connected to second electrically conductive contact elements of the fuel injection valves are arranged, are rigidly connected to the contact strip.
  • the receptacle openings in the fuel distributor piece, the receptacles of the plug housings in the contact strip as well as the first electrically conductive contact elements fastened in the plug housings and the second electrically conductive contact elements of the fuel injection valves are subject to shape and position tolerances, connecting the Contact strip with the fuel injection valves for an offset between the second electrically conductive contact elements of the fuel injection valves and the first electrically conductive contact elements in the contact strip arranged connector housing. If the contact strip, the fuel distributor piece and the plug housing are made of plastic, particularly large manufacturing and shape tolerances are to be expected.
  • the contact strip according to the invention with the characterizing features of claim 1 has the advantage over the fact that the plug housings which are mounted so as to be movable in the horizontal and vertical directions in the contact strip make it possible to compensate for the shape and positional tolerances between the electrically excited units which are contacted together and the contact strip .
  • the connector housings which are still movable in the contact strip after assembly can thus align themselves in accordance with the position of the second electrically conductive contact elements of the electrically excitable units in the contact strip.
  • a device with the features of claim 2 enables a common electrical contacting of fuel injection valves arranged in a fuel distributor piece with the advantages already listed above for claim 1.
  • the offsets due to shape and position tolerances through the receiving openings of the fuel distributor piece, the fuel injection valves, the first and the second electrically conductive contact elements as well as the connector housings are made horizontal and vertical by the ones in the contact strip floating connector housing balanced.
  • a holding element is fastened to the contacting strip, which passes through a through opening of the connector housing with radial play and axial distance and with a head the axial one
  • the mobility of the connector housing relative to the contact strip is limited.
  • the plug housing is held on a central base part of a receiving opening of the contact strip designed for receiving the plug housing by means of the holding element fastened in a blind hole in the central base part.
  • An advantageous connection is also obtained if the plug housing is inserted into a receiving opening of the contact strip designed for receiving the plug housing and is connected to the contact strip by means of a snap or snap connection.
  • At least one positioning lug which defines the position of the assembly or the fuel injection valve relative to the connector housing, is formed on the connector housing, which extends from the circumference of the connector housing in the axial direction of the receiving opening and at least with a recess arranged on the assembly or fuel injection valve cooperates, so that there is a simple and accurate positioning of the unit or the fuel injector relative to the connector housing. This effectively prevents deformation or damage to the first electrically conductive contact elements of the plug housing or the second electrically conductive contact elements of the unit or the fuel injector.
  • the contact strip As well as the plug housing from plastic.
  • the large manufacturing-related shape and position tolerances that occur when plastics are used can be compensated for by the horizontally and vertically movable connector housings.
  • a rigid connector housing arrangement as described in DE-OS 37 30 571, it is not possible to compensate for the large tolerances that occur, so that the use of a contact strip made of plastic is problematic. . .
  • first electrically conductive contact elements can be fastened in the plug openings of the plug housing by means of latching lugs formed on the first electrically conductive contact elements, so that there is a simple and safe connection between the first electrically conductive contact elements and the plug housing results.
  • the electrical conductor is connected to the contacting strip at at least one support point of the contacting strip by caulking contacting strip material by means of ultrasonic welding, so that there is a simple and reliable connection between the electrical conductor and the contacting strip .
  • the fuel distributor piece is virtually integrated into the intake manifold or into the cylinder head of an internal combustion engine, that is to say the necessary fuel lines and valve receiving openings are present there.
  • FIG. 1 and FIG. 2 show a contact strip designed according to the invention
  • FIG. 3 shows a fastening of the plug housing on the contact strip designed according to the invention in accordance with the section III-III in FIG. 2
  • FIG. 4 and FIG. 5 shows an upper housing part of a connector that can be connected to the plug housing
  • Fuel injection valve and FIG. 6 a fuel distributor piece with fuel injection valves arranged therein, which are electrically contacted together by a contact strip.
  • the contact strip for example shown in FIGS. 1 to 6, for the common electrical contacting of several electrically excitable assemblies of internal combustion engines, the contact strip, which is designed, for example, as a plastic injection molded part, is designated by 1.
  • plug housings 2 are arranged, each of which is assigned to an electrically excitable unit and is used to make electrical contact with it.
  • a blind hole-shaped receiving opening 3 is provided in the contact strip 1 for each connector housing 2, which opening is open to a strip end face 4.
  • the connector housing 2 made of electrically insulating material there are first electrically conductive ones
  • Contact elements 5 are arranged, which are electrically conductively connected to electrical conductors 6 arranged in the contact strip 1.
  • a contact plug 10 is also arranged on the contact strip 1, to which the individual electrical conductors 6 are connected and via which electrical control signals for the electrically excitable units can be input via a known type of electronic control device, not shown.
  • all electrical conductors 6 extend from the connector 10 to the individual connector housings 2 within the contact strip 1 and branch off there to the individual first electrically conductive contact elements 5.
  • Two guide arms 11 protrude from the ledge end face 4 at an axial distance from one another and are preferably molded on during the manufacture of the contact strip 1.
  • fastening bushings 13, 14 are formed in the contact strip illustrated as an exemplary embodiment during manufacture, which are open at least on their side facing the strip end face 4 .
  • the fastening bushes 13, 14 are formed, for example, from a metallic material.
  • the fastening bushing 13 has a blind hole 17, which is provided with an internal thread 18, while the fastening bushings 14, which are open on both sides, form fastening openings 16 in the contacting strip 1 in connection with strip openings 15 of the contacting strip 1 which are concentric with the fastening bushings 14.
  • a stepped holding element 19 which is made, for example, of plastic and, starting from a head 20, has a central region 21 that has a smaller diameter than the head 20 and a tip 22 that has a smaller diameter than the central region 21, is by a stepped, concentric to a plug longitudinal axis 25 of the plug housing 2 formed through opening 26 of the plug housing 2 and inserted with its tip 22 into a blind hole 28 of a central bottom part 29 of the receiving opening 3 and concentric with a longitudinal axis 27 of the receiving opening 3 of the contact strip 1 the illustrated embodiment connected by means of ultrasonic welding with the blind hole 28 so that the holding element 19 lies with a first element shoulder 31 of the central region 21 in the axial direction on an end face 32 of the central base part 29.
  • the middle base part 29 protrudes in the axial direction from the base 35 of the receiving opening 3 of the contact strip 1 and has, for example
  • the tip 22 of the holding element 19 to be provided with a thread on its periphery and for it to be screwed into the blind hole 28, which is also provided with a thread, in the central base part 29.
  • an axial distance 39 is provided between a second element shoulder 36 of the head 20, as shown in FIG. 3, and an end face 37 facing away from the blind bore 28 of a central reduction in cross section 38 of the stepped through opening 26, so that the plug housing 2 opposite the holding element 19 connected to the contact strip 1 and thus relative to the contact strip 1 can be moved with play in the axial or vertical direction.
  • An axial distance 34 existing between a shoulder 33 formed at the transition from the reduction in cross section 38 to a region 41 of the through opening 26 and the central bottom part 29 is greater than the axial distance 39. This axial distance 39 is limited by the contact of one of them Head 20 of the holding element 19 facing away from the plug end face 40 of the plug housing 2 on the bottom 35.
  • a radial clearance 42 is provided between the stepped through opening 26 in its region 41 facing the base 35 and the circumference of the annular central base part 29. Furthermore, a radial play 43 between the reduction in cross-section 38 and the central region 21 and a radial play 44 between the head 20 and a region 45 of the through opening 26 surrounding the head 20 are provided. As a result, the plug housing 2 can be moved freely in the radial or horizontal direction with respect to the holding element 19 and thus also with respect to the contact strip 1.
  • a snap or snap-in connection or another connection between the connector housing 2 and the contact strip 1 is also possible in order to ensure the horizontal and vertical mobility of the connector housing 2 according to the invention with respect to the contact strip 1.
  • positioning lugs 47 having a polygonal cross-sectional shape are formed in the embodiment shown in FIGS. 2 and 3, which are arranged at a distance from one another such that two on each side of a strip longitudinal axis 46 are symmetrical to the line III-III, which is electrical by the first conductive contact elements 5 runs.
  • the positioning lugs 47 have, for example, the shape of a right angle and have parallel surfaces 75 in the longitudinal direction of the contact strip 1 and parallel surfaces 76 perpendicular to this. However, rounded-off positioning lugs 47 are also possible.
  • a connecting web 48 is formed on the connector housing 2 and connects the two positioning lugs 47 lying on one side of the longitudinal axis 46 of the strip at their end facing away from the longitudinal axis 46 of the strip, so that their two surfaces 76 are shorter than the surfaces 76 running on the other side of the longitudinal axis 46 of the strip, which open ends at the end of the plug housing, that is, in relation to the longitudinal axis 46 of the contact strip 1, the surfaces 76 and thus the positioning lugs 47 on different sides of the Longitudinal longitudinal axis 46 are designed asymmetrically to one another.
  • the surfaces 76 of the positioning lugs 47 could also be arranged such that they are at a smaller distance from one another on one side of the longitudinal axis 46 of the ledge than on the other side.
  • the positioning lugs 47 designed asymmetrically with respect to the longitudinal bar axis 46 of the contacting bar 1 in connection with the connecting web 48, it is necessary to also make the recesses 55 on the upper housing part 53 asymmetrical with respect to a line perpendicular to a connecting line 57 to design two second electrically conductive contact elements 54 extending line.
  • the recesses 55 must accordingly have space for receiving the positioning lugs 47 and the connecting web 48. This results, for example, in two projections 80 and 81 which surround the contact elements 54 and lie on the connecting line 57.
  • the projections 80, 81 have parallel surfaces 82 extending in the direction of a longitudinal valve axis 56, which are spaced such that the projections 80, 81 of the fuel injection valve 53 can be inserted between the positioning lugs 47 of the plug housing 2.
  • the parallel surfaces 82 of the projection 80 in the direction of the connecting line 57 are also shorter than the parallel surfaces 82 of the projection 81 in this direction, so that the projections 80, 81 are asymmetrical with respect to the valve longitudinal axis 56.
  • connector housing 2 which is asymmetrical with respect to the longitudinal axis 46 of the strip, due to the connecting web 48 and the corresponding design of the upper housing part 52 brings about an effective polarity reversal protection for the fuel injection valve 53, so that the fuel injector 53 cannot be rotated by 180 ° and connected to the connector housing 2.
  • the described and illustrated design of the upper housing part 52 of the fuel injection valve 53 can be achieved, for example, by at least partially encapsulating the valve housing with plastic.
  • FIG. 6 shows a fuel distributor piece 60 which is essentially the same as that described in DE-OS 37 30 571 and in whose spaced-apart, stepped valve receiving openings 61 a fuel injector 53 is arranged, which is open at both ends from the one Valve receiving opening 61 is enclosed.
  • the fuel injection valve 53 is connected to at least one fuel line running in the fuel distributor 60.
  • the fuel is fed into and removed from the fuel distributor piece 60 by means of, for example, two connecting pieces 63, 64 of the fuel distributor piece 60.
  • the system pressure of the fuel in the fuel distributor piece 60 is arranged by a on the fuel distributor piece 60 Pressure regulator 65 regulated in a known manner.
  • the contact strip 1 is connected to the fuel distributor piece 60 in such a way that it covers the valve receiving openings 61 and the fuel injection valves 53 are held therein.
  • the guide arms 11 of the contact strip 1 are used for easier mounting of the contact strip 1 and the fuel distributor piece 60 and engage in mounting openings 66 of the fuel distributor piece 60. Concentric to the fastening openings 16 formed in the contact strip 1 and open on both sides are in the 13 -
  • Fuel distributor piece 60 has fastening openings 67 which are open on both sides, for example by means of fastening bushings 68 arranged in fuel distributor piece 60. By means of these openings, which extend through both the fuel distributor piece 60 and through the contact strip 1, the part consisting of the fuel distributor piece 60 and the contact strip 1 can be fastened together, for example, to an intake manifold or a cylinder head of an internal combustion engine.
  • a through opening 71 is formed concentrically with the blind hole 17 of the fastening bushing 13 in the fuel distributor piece 60 which has an internal thread 18, e.g. by means of a fastening bushing 72.
  • the fuel injection valves 53 arranged in the fuel distributor piece 60 can, for example, spray directly into the cylinders of an internal combustion engine or into an intake manifold of an internal combustion engine.
  • the contact strip 1 according to the invention enables the plug housing 2 to be moved in relation to the contact strip 1 both in the horizontal and in the vertical direction. In this way, shape and position tolerances between the first electrically conductive contact elements 5 of the plug housing 2 and the second electrically conductive contact elements 54, for example of the fuel injection valves 53, can be compensated.
  • the contact strip 1 according to the invention is of course also suitable for contacting other electrically excitable units, for example the spark plugs of an externally ignited internal combustion engine or the glow plugs of a self-igniting internal combustion engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Electromagnets (AREA)

Abstract

Dans des réglettes connues de contact, les logements des prises, dans lesquels sont agencés des premiers éléments électroconducteurs de contact connectables avec des deuxièmes éléments électroconducteurs de contact des organes à excitation électrique, sont reliés de manière rigide à la réglette de contact. Lorsque la réglette de contact est reliée aux organes à excitation électrique, des tolérances de forme et de position peuvent entraîner un décalage entre les éléments électroconducteurs de contact et des dommages éventuels. Une nouvelle réglette de contact (1) comprend des logements de prises (2) reliés à une partie inférieure médiane d'un orifice de réception (3) de la réglette de contact (1) de manière mobile par flottement dans les sens horizontal et vertical, de façon à compenser des décalages éventuels entre les premiers (5) et les deuxièmes éléments électroconducteurs de contact et éviter des dommages. Cette conception de la réglette de contact est particulièrement utile pour assurer un contact électrique simultané des soupapes d'injection de carburant à commande électrique.
EP91901698A 1990-02-09 1991-01-19 Reglette pour le contact électrique simultane d'une pluralité d'injecteurs de carburant électromagnetiques Expired - Lifetime EP0469099B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91901698T ATE103372T1 (de) 1990-02-09 1991-01-19 Kontaktierungsleiste zur gemeinsamen elektrischen kontaktierung mehrerer elektromagnetisch betaetigbarer brennstoffeinspritzventile.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4003958 1990-02-09
DE4003958A DE4003958A1 (de) 1990-02-09 1990-02-09 Kontaktierungsleiste zur gemeinsamen elektrischen kontaktierung mehrerer elektrisch erregbarer aggregate von brennkraftmaschinen

Publications (2)

Publication Number Publication Date
EP0469099A1 true EP0469099A1 (fr) 1992-02-05
EP0469099B1 EP0469099B1 (fr) 1994-03-23

Family

ID=6399799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91901698A Expired - Lifetime EP0469099B1 (fr) 1990-02-09 1991-01-19 Reglette pour le contact électrique simultane d'une pluralité d'injecteurs de carburant électromagnetiques

Country Status (8)

Country Link
US (1) US5154622A (fr)
EP (1) EP0469099B1 (fr)
JP (1) JPH04505492A (fr)
KR (1) KR920701668A (fr)
BR (1) BR9104335A (fr)
DE (2) DE4003958A1 (fr)
ES (1) ES2051586T3 (fr)
WO (1) WO1991012425A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4030422A1 (de) * 1990-09-26 1992-04-02 Bosch Gmbh Robert Kontaktierungsleiste zur gemeinsamen elektrischen kontaktierung mehrerer elektrisch erregbarer aggregate von brennkraftmaschinen
DE4206370A1 (de) * 1991-05-17 1992-11-19 Mann & Hummel Filter Steuerleiste in kunststoffkompaktbauweise
DE4118512A1 (de) * 1991-06-06 1992-12-10 Bosch Gmbh Robert Elektrisch betaetigbares brennstoffeinspritzventil und verfahren zu dessen elektrischer kontaktierung
US5718206A (en) * 1995-10-12 1998-02-17 Nippondenso Co., Ltd. Fuel supply system having fuel rail
DE19641952C5 (de) * 1996-10-11 2005-06-02 Daimlerchrysler Ag Kraftstofführung für eine mehrzylindrige Brennkraftmaschine mit Aufnahmebohrungen für Steckpumpen
DE19942990A1 (de) * 1999-09-09 2001-03-22 Bosch Gmbh Robert Common-Rail-Injektor
DE10023064B4 (de) * 2000-05-11 2012-05-24 Volkswagen Ag Glühkerzenanordnung an einem Dieselmotor
DE10103826A1 (de) * 2001-01-29 2002-08-14 Bosch Gmbh Robert Einspritzventil für Saugrohr oder Zylinderkopf mit integriertem Kraftstoffzulauf
DE102010031086A1 (de) * 2010-07-08 2012-01-12 Airbus Operations Gmbh Verteiler, Verteileranordnung sowie Luft- oder Raumfahrzeug

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60108561A (ja) * 1983-11-15 1985-06-14 Nippon Denso Co Ltd 燃料分配管
US4697859A (en) * 1986-08-15 1987-10-06 Amp Incorporated Floating coaxial connector
US4857003A (en) * 1987-02-06 1989-08-15 Robert Bosch Gmbh Apparatus for electrical connection of electromagnetically actuatable fuel injection valves
DE3730571C2 (de) * 1987-09-11 1998-07-02 Bosch Gmbh Robert Vorrichtung zur Halterung, Kraftstoffversorgung und elektrischen Kontaktierung von elektromagnetisch betätigbaren Kraftstoffeinspritzventilen
DE8903551U1 (de) * 1989-03-21 1990-07-26 Grote & Hartmann Gmbh & Co Kg, 5600 Wuppertal Kontaktierungsleiste für elektromagnetisch betätigbare Kraftstoffeinspritzventile

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9112425A1 *

Also Published As

Publication number Publication date
ES2051586T3 (es) 1994-06-16
AU7053491A (en) 1991-09-03
JPH04505492A (ja) 1992-09-24
WO1991012425A1 (fr) 1991-08-22
DE59101227D1 (de) 1994-04-28
US5154622A (en) 1992-10-13
BR9104335A (pt) 1992-04-21
KR920701668A (ko) 1992-08-12
DE4003958C2 (fr) 1992-09-24
DE4003958A1 (de) 1991-08-14
AU630274B2 (en) 1992-10-22
EP0469099B1 (fr) 1994-03-23

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