EP0469099B1 - Kontaktierungsleiste zur gemeinsamen elektrischen Kontaktierung mehrerer elektromagnetisch betätigbarer Brennstoffeinspritzventile - Google Patents

Kontaktierungsleiste zur gemeinsamen elektrischen Kontaktierung mehrerer elektromagnetisch betätigbarer Brennstoffeinspritzventile Download PDF

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Publication number
EP0469099B1
EP0469099B1 EP91901698A EP91901698A EP0469099B1 EP 0469099 B1 EP0469099 B1 EP 0469099B1 EP 91901698 A EP91901698 A EP 91901698A EP 91901698 A EP91901698 A EP 91901698A EP 0469099 B1 EP0469099 B1 EP 0469099B1
Authority
EP
European Patent Office
Prior art keywords
contacting strip
plug housing
plug
contacting
contact elements
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
EP91901698A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0469099A1 (de
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/de
Application granted granted Critical
Publication of EP0469099B1 publication Critical patent/EP0469099B1/de
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
    • 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 preamble of claim 1.
  • a device is already known in which the fuel injection valves are received in individual receiving openings of a fuel distributor piece and are electrically contacted together 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 connector housings in the contact strip and 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, there is a problem when connecting the contact strip to the fuel injection valves Offset between the second electrically conductive contact elements of the fuel injection valves and the first electrically conductive contact elements of the connector housing arranged in the contact strip. 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.
  • a contact strip is also known from EP-A-0 278 229, in which plug housings are arranged in such a way that they can be moved in relation to the contact strip in the direction of the longitudinal axis of the plug and in the radial direction thereto.
  • the connector housing is formed in two parts and protrude beyond the strip body on both sides after assembly.
  • the contact strip with the features of claim 1 has the advantage that in the contact strip in the direction of the longitudinal axis of the plug and in the radial direction to it in a simple manner floating within the contact strip and thus protected movably mounted connector housing to compensate for the shape and position tolerances between enable the jointly contacted fuel injection valves and the contact strip. This results in smaller deformations and joining forces between the first electrically conductive contact elements of the contact strip and the second electrically conductive contact elements, so that damage during the joining process is effectively prevented when connecting the contact strip having the plug housing to the fuel injection valves.
  • An advantageous embodiment results when the plug housing is inserted into a receiving opening of the contact strip designed to receive 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 fuel injection valve relative to the connector housing, is formed on the connector housing and extends from the circumference of the connector housing in the axial direction of the receiving opening and interacts at least with a recess arranged on the fuel injection valve, so that a simple one and accurate positioning of the fuel injector relative to the connector housing results. 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 fuel injector.
  • An asymmetrical configuration with respect to a longitudinal axis of the contact strip of at least two positioning lugs and at least two recesses on the fuel injector and the connector housing has the advantage that when connecting the first electrically conductive contact elements of the connector housing with the second electrically conductive contact elements of the fuel injector, they only have exactly one Positioning the fuel injector Allow against the connector housing and thus serve as reverse polarity protection for the electrical contact.
  • first electrically conductive contact elements in plug openings of the connector housing by means of locking lugs formed on the first electrically conductive contact elements can be fastened by snap-in, so that there is a simple and safe connection between the first electrically conductive contact elements and the connector housing.
  • the electrical conductor is connected to the contact strip at at least one support point of the contact strip by caulking contact strip material by means of ultrasonic welding , so that there is an easy to manufacture and reliable connection between the electrical conductor and the contact strip.
  • the fuel distributor piece is quasi integrated in the intake manifold or in the cylinder head of an internal combustion engine, that is, the necessary fuel lines and valve receiving openings are present there.
  • FIG. 1 and FIG. 2 show a contact strip designed in accordance with the invention
  • FIG. 3 shows an attachment of the plug housing to the contact strip designed in accordance with the invention in accordance with the section III-III in FIG. 2
  • FIG. 4 and FIG. 5 shows an upper housing part of a fuel injector that can be connected to the plug housing
  • FIG. 6 a fuel distributor with fuel injectors arranged therein, which are electrically contacted together by a contact strip.
  • the contacting strip for example shown in FIGS. 1 to 6, for the common electrical contacting of several electrically excitable units of internal combustion engines, the contacting strip, which is designed, for example, as a plastic injection molded part, is designated by 1.
  • connector 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 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.
  • the electrical conductors 6 can be designed, for example, in the form of a band and are connected to the contact strip 1, for example, by a support point 7 of the contact strip 1 located between each receiving opening 3, each support point 7 being formed by caulking the contact strip material by means of ultrasonic welding.
  • a connector 10 is also arranged on the contact strip 1, with which the individual electrical conductors 6 are connected and 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, which guide arms 11 are preferably formed during the manufacture of the contact strip 1.
  • fastening bushings 13, 14 are formed in the contact strip shown as an exemplary embodiment during manufacture, which are open at least on the 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.
  • FIG. 3 shows a greatly enlarged example of a connection according to the invention of, for example, a connector housing 2 made of plastic and the contact strip 1 made of plastic.
  • the middle base part 29 protrudes in the axial direction from the base 35 of the
  • the tip 22 of the holding element 19 is provided with a thread on its circumference and is 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 and a central cross-sectional reduction 38 of the stepped through-opening 26, so that the connector housing 2 is opposite the holding element 19 connected to the contact strip 1 and thus can be moved with play relative to the contact strip 1 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 base part 29 is greater than the axial distance 39. This axial distance 39 is limited by the contact of a 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 cross-sectional reduction 38 and the central region 21 and a radial play 44 between the head 20 and a region 45 of the Dutch passage 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 connection or another connection between the plug housing 2 and the contact strip 1 is also possible in order to ensure the horizontal and vertical mobility of the plug 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 exemplary embodiment shown in FIGS to line III-III, which is electric 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 thereto. Rounded positioning lugs 47 are also possible.
  • a connecting web 48 is formed which 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 those on on the other side of the strip longitudinal axis 46, surfaces 76 which openly end at the end of the plug housing, i.e. with respect to the strip longitudinal axis 46 of the contact strip 1, the surfaces 76 and thus the positioning lugs 47 on different sides of the strip longitudinal axis 46 are configured 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 strip than on the other side.
  • the connector housing 2 has, for example, two stepped plug openings 49 which are open on both sides and in which a first electrically conductive contact element 5 is fastened by snapping in, for example, two latches 50 formed on the first electrically conductive contact element 5.
  • FIGS. 4 and 5 show an upper housing part 52 of a fuel injection valve 53 as an example of an electrically excitable unit of an internal combustion engine.
  • the upper housing part 52 has, for example, two second electrically conductive contact elements 54, which can be electrically conductively connected to the first electrically conductive contact elements 5 of the plug housing 2.
  • cutouts 55 are formed on the upper housing part 52 of the fuel injection valve 53, into which the positioning lugs 47 can engage.
  • the positioning lugs 47 designed asymmetrically with respect to the strip longitudinal axis 46 of the contacting strip 1 in connection with the connecting web 48, it is necessary to cut the recesses 55 on the upper housing part 53 also asymmetrically to a line running perpendicular to a connecting line 57 of the two second electrically conductive contact elements 54 to design.
  • the cutouts 55 must accordingly have space for accommodating 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 running in the direction of a longitudinal valve axis 56, which are spaced such that the projections 80, 81 of the fuel injector 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.
  • the design of the connector housing 2 which is asymmetrical with respect to the longitudinal axis 46 of the strip and the corresponding design of the upper housing part 52, results in effective polarity reversal protection for the fuel injector 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 enclosed by the valve receiving opening 61 which is open at both ends .
  • the fuel injection valve 53 is connected to at least one fuel line running in the fuel distributor 60.
  • the supply and discharge of the fuel into and from the fuel distributor 60 takes place, for example, by means of two connecting pieces 63, 64 of the fuel distributor 60.
  • the system pressure of the fuel in the fuel distributor 60 is regulated in a known manner by a pressure regulator 65 arranged on the fuel distributor 60.
  • the contacting 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 serve for easier assembly of the contact strip 1 and the fuel distributor piece 60 and engage in assembly openings 66 of the fuel distributor piece 60.
  • Concentric to the attachment openings 16 formed in the contact strip 1 and open on both sides are in the Fuel distributor piece 60 is provided with fastening openings 67 which are open on both sides, for example by means of fastening bushings 68 arranged in fuel distributor piece 60.
  • a through-hole 71 is formed concentrically with the blind hole 17 of the fastening bushing 13 in the fuel distributor piece 60, which thread has an internal thread 18, for example by means of a fastening bushing 72
  • Fastening bush 72 lies against the head of a screw 73 which is screwed into the internal thread 18 of the blind hole 17 of the contact strip 1 and thus connects the contact strip 1 and the fuel distributor piece 60 to one another.
  • 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 enables the connector housing 2 to be movable relative 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 connector housing 2 and the second electrically conductive contact elements 54 of the fuel injection valves 53 can be compensated.

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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)
  • Electromagnets (AREA)
EP91901698A 1990-02-09 1991-01-19 Kontaktierungsleiste zur gemeinsamen elektrischen Kontaktierung mehrerer elektromagnetisch betätigbarer Brennstoffeinspritzventile Expired - Lifetime EP0469099B1 (de)

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 EP0469099A1 (de) 1992-02-05
EP0469099B1 true EP0469099B1 (de) 1994-03-23

Family

ID=6399799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91901698A Expired - Lifetime EP0469099B1 (de) 1990-02-09 1991-01-19 Kontaktierungsleiste zur gemeinsamen elektrischen Kontaktierung mehrerer elektromagnetisch betätigbarer Brennstoffeinspritzventile

Country Status (8)

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

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

Also Published As

Publication number Publication date
DE59101227D1 (de) 1994-04-28
AU630274B2 (en) 1992-10-22
KR920701668A (ko) 1992-08-12
WO1991012425A1 (de) 1991-08-22
US5154622A (en) 1992-10-13
BR9104335A (pt) 1992-04-21
DE4003958A1 (de) 1991-08-14
AU7053491A (en) 1991-09-03
DE4003958C2 (pt) 1992-09-24
EP0469099A1 (de) 1992-02-05
ES2051586T3 (es) 1994-06-16
JPH04505492A (ja) 1992-09-24

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