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EP0238882A2 - Control device for a fuel injection pump - Google Patents

Control device for a fuel injection pump Download PDF

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Publication number
EP0238882A2
EP0238882A2 EP87102774A EP87102774A EP0238882A2 EP 0238882 A2 EP0238882 A2 EP 0238882A2 EP 87102774 A EP87102774 A EP 87102774A EP 87102774 A EP87102774 A EP 87102774A EP 0238882 A2 EP0238882 A2 EP 0238882A2
Authority
EP
European Patent Office
Prior art keywords
cover
carrier
adjusting device
free end
plug connection
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.)
Ceased
Application number
EP87102774A
Other languages
German (de)
French (fr)
Other versions
EP0238882A3 (en
Inventor
Wolfgang Fehlmann
Dieter Dipl.-Ing. Junger
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 EP0238882A2 publication Critical patent/EP0238882A2/en
Publication of EP0238882A3 publication Critical patent/EP0238882A3/en
Ceased 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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/3005—Details not otherwise provided for
    • 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
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
    • F02M41/10—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor
    • F02M41/12—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor
    • F02M41/123—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor characterised by means for varying fuel delivery or injection timing
    • F02M41/125—Variably-timed valves controlling fuel passages
    • F02M41/126—Variably-timed valves controlling fuel passages valves being mechanically or electrically adjustable sleeves slidably mounted on rotary piston
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/48—Assembling; Disassembling; Replacing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • F02D2011/101—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type characterised by the means for actuating the throttles
    • F02D2011/102—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type characterised by the means for actuating the throttles at least one throttle being moved only by an electric actuator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
    • F02D2400/18—Packaging of the electronic circuit in a casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
    • F02D2400/22—Connectors or cables specially adapted for engine management applications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/406—Electrically controlling a diesel injection pump
    • F02D41/408—Electrically controlling a diesel injection pump of the distributing type

Definitions

  • the invention relates to an actuator for a fuel injection pump according to the preamble of the main claim.
  • DE-OS 30 04 035 and DE-OS 31 48 596 electrical actuators of this type in which the connector for the control current line is attached to the lid and resilient contact elements are provided on the carrier, which with the connector leading leaders are contacted. With these devices, contacting during assembly of the housing is difficult and time-consuming. Furthermore, the sealing of the fuel-containing housing in the region of the plug connection is problematic.
  • the actuator with the characterizing features of the main claim has the advantage that a subsequent contact of the conductor between the connector on the cover and the carrier in the lower part of the housing there is also no insulation of the bridges and the contact points. Furthermore, the housing is sealed dirt-tight even when the mating connector is removed. In addition, the fixed connection of the plug connection to the carrier results in less assembly effort with a secure conductor connection.
  • FIG. 1 shows an adjusting device on a fuel injection pump in longitudinal section in different planes
  • FIG. 2 shows the adjusting device according to FIG. 1 in a top view with the cover removed.
  • FIG. 1 shows part of a fuel injection pump 1 of the distributor type, to the pump housing 2 of which an adjusting device 3 for quantity adjustment is attached.
  • the pump housing 2 comprises a suction chamber 4, in which a cam disk 5, which is driven by means not shown in more detail, sets a pump piston 6 in a reciprocating and rotating movement, in order to thereby effect fuel delivery to injection valves of an internal combustion engine.
  • the pump piston 6 has a control bore 7, which can be covered by a ring slide 8, so that there is relative movement of the ring slide 8 to the pump piston 6 results in a known quantity control of the injection pump.
  • the ring slide 8 is adjustable as a function of the rotary movement of a shaft 9 of a rotary magnet signaling unit 10 of the actuating device 3 via a driver crank 11, as is also known per se.
  • the rotary magnetic interlocking 10 is seated in a housing consisting of a lower part 15 and a cover 16, the lower part 15 of which is tightly attached to the pump housing 2, its shaft 9 and a bearing eye 17 guiding it projecting from the lower part 15 through an opening 18 in the pump housing 2 into the suction chamber 4 .
  • a housing consisting of a lower part 15 and a cover 16, the lower part 15 of which is tightly attached to the pump housing 2, its shaft 9 and a bearing eye 17 guiding it projecting from the lower part 15 through an opening 18 in the pump housing 2 into the suction chamber 4 .
  • Through an opening 19 in the lower part 15 and the opening 18, the interior of the housing of the actuating device 3 is connected to the suction chamber 4, so that it is also filled with fuel and the same pressure as in the suction chamber 4 prevails in it.
  • the cover 16 is sealed by a sealing ring 21 on the upper opening edge of the lower part 15 and is fastened to the lower part 15 with four screws 22.
  • the rotary magnet signal box 10 is screwed into the lower part 15 with several, for example four stud bolts 24, which also carry a carrier plate 25 which extends above the rotary magnet signal box 10 in the transition area of the lower part 15 to the cover 16.
  • a potentiometer angle transmitter 26 and connecting terminals 27 are arranged on the carrier plate 25.
  • the resistance layer and the contact path of the potentiometer angle transmitter 26 and the connecting terminals 27 are connected to conductors 28 which extend embedded in the carrier plate 25 and of which only one is shown in FIG. 1.
  • the ends of the conductors 28, which are remote from the connecting terminals 27 and from the angle transmitter 26, end evenly distributed on a circle and one of them in the center of the circle. With you the lower end 31 of contact pins 30 is welded or riveted.
  • the contact pins 30 protrude upward from the top of the carrier plate 25. Its lower end 31 is anchored in the carrier plate 25, which is made thickened in this area. Like the ends of the conductors 28, the contact pins 30 are evenly distributed on a circle and one of them is arranged in the center thereof. The free ends 32 of the contact pins 30 are surrounded by a bush 34 with an annular cross section, which is designed as a one-piece extension on the carrier plate 25.
  • the carrier plate 25 with the socket 34 consists of an electrically insulating plastic, for example polyamide, and is manufactured by injection molding. The lower ends 31 of the contact pins 30 connected to the conductors 28 are surrounded by the material during the injection molding of the carrier plate 25 and are then held in the correct position by the latter.
  • the bushing 34 projecting upward from the carrier plate 25 passes through an opening 35 in the cover 16 with a close fit. Because of this tight fit, the bushing 34 determines the position of the cover 16 on the lower part 15.
  • an axial annular groove 36 is incorporated, in which a sealing ring 37 is inserted.
  • a mating connector 40 on a connecting line 41 originating from the control unit 38 is used to electrically connect the rotary magnetic interlocking system 10 to the control device 38 via the plug connection consisting of the contact pins 30 and the socket 34 on the carrier plate 25.
  • the mating connector 40 has an inner insulating body 39 with contact sleeves 42 , which are arranged in mirror image of the contact pins 30 of the plug connection, and a sleeve 43, the lower end of which has an annular cross section which corresponds to that of the annular groove 36 in the cover 16. Im up inserted state, the lower end of the sleeve 43 engages around the end of the socket projecting above the top of the cover 16, the end face of which encloses the sealing ring 37 in the annular groove 36.
  • the sleeve 43 has a collar 44, the underside of which rests on the upper side of the cover 16 and is held by a coupling ring 45 which is fastened to the cover 16 by screws 46.
  • the free end of the sleeve 43 penetrates into the annular groove 36 of the cover and comes into contact with the sealing ring 37.
  • the end face of the sleeve 43 presses the sealing ring 37, which is also radial deformed and under tension on the outer circumference of the bush 34 and on the inner circumference of the annular groove 36.

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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)
  • High-Pressure Fuel Injection Pump Control (AREA)

Abstract

Eine Stellvorrichtung (3) für eine Kraftstoffeinspritz­pumpe (1) hat einen Steckeranschluß zum Verbinden mit einem Steuergerät (38). Um eine Abdichtung des Stecker­anschlusses im Bereich dessen Durchführung durch den Dek­kel (16) des Gehäuses zu erzielen, ist der Steckeran­schluß mit einem im Gehäuse befestigten Träger (25) ver­bunden, der einen buchsenförmigen, einen Durchbruch im Deckel (16) dichtend durchsetzenden Ansatz (34) hat, und in dem Kontaktstifte (30) und Leiter (28) eingebettet sind.

Figure imgaf001
An actuating device (3) for a fuel injection pump (1) has a plug connection for connecting to a control unit (38). In order to seal the plug connection in the area of its implementation through the cover (16) of the housing, the plug connection is connected to a carrier (25) fastened in the housing, which has a socket-like extension (34) which penetrates an opening in the cover (16) ), and in which contact pins (30) and conductors (28) are embedded.
Figure imgaf001

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Stellvorrichtung für ei­ne Kraftstoffeinspritzpumpe nach der Gattung des Hauptan­spruchs. Es sind durch die DE-OS 30 04 035 und die DE-OS 31 48 596 schon elektrische Stellvorrichtungen dieser Art bekannt geworden, bei denen der Steckeranschluß für die Steuerstromleitung am Deckel befestigt ist und auf dem Träger federnde Kontaktelemente vorgesehen sind, die mit zum Steckeranschluß führenden Leitern kontaktiert sind. Bei diesen Vorrichtungen ist das Kontaktieren beim Zusam­menbau des Gehäuses schwierig und aufwendig durchzuführen. Ferner ist die Abdichtung des Kraftstoff enthaltenden Ge­häuses im Bereich des Steckeranschlusses problematisch.The invention relates to an actuator for a fuel injection pump according to the preamble of the main claim. There are already known from DE-OS 30 04 035 and DE-OS 31 48 596 electrical actuators of this type, in which the connector for the control current line is attached to the lid and resilient contact elements are provided on the carrier, which with the connector leading leaders are contacted. With these devices, contacting during assembly of the housing is difficult and time-consuming. Furthermore, the sealing of the fuel-containing housing in the region of the plug connection is problematic.

Vorteile der ErfindungAdvantages of the invention

Die Stellvorrichtung mit den kennzeichnenden Merkmalen des Hauptanspruchs hat den Vorteil, daß ein nachträg­liches Kontaktieren der Leiter zwischen dem Steckeran­schluß am Deckel und dem Träger im Gehäuseunterteil entfällt, ebenso eine Isolierung der Überbrückungen und der Kontaktstellen. Ferner ist das Gehäuse auch bei abge­zogenem Gegenstecker schmutzdicht verschlossen. Außerdem ergibt sich durch die feste Verbindung des Steckeranschlus­ses mit dem Träger ein geringer Montageaufwend bei gesi­cherter Leiterverbindung.The actuator with the characterizing features of the main claim has the advantage that a subsequent contact of the conductor between the connector on the cover and the carrier in the lower part of the housing there is also no insulation of the bridges and the contact points. Furthermore, the housing is sealed dirt-tight even when the mating connector is removed. In addition, the fixed connection of the plug connection to the carrier results in less assembly effort with a secure conductor connection.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen der im Hauptanspruch angegebenen Stellvorrichtung möglich, die sich aus der Beschreibung und der Zeichnung ergeben.The measures listed in the subclaims permit advantageous developments of the actuating device specified in the main claim, which result from the description and the drawing.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeich­nung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 eine Stellvorrich­tung an einer Kraftstoffeinspritzpumpe im Längsschnitt in verschiedenen Ebenen und Figur 2 die Stellvorrich­tung nach Figur 1 in Draufsicht bei abgenommenem Deckel.An embodiment of the invention is shown in the drawing and explained in more detail in the following description. FIG. 1 shows an adjusting device on a fuel injection pump in longitudinal section in different planes, and FIG. 2 shows the adjusting device according to FIG. 1 in a top view with the cover removed.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Die Figur 1 zeigt einen Teil einer Kraftstoffeinspritz­pumpe 1 der Verteilerbauart, an deren Pumpengehäuse 2 eine Stellvorrichtung 3 zur Mengenverstellung befestigt ist. Das Pumpengehäuse 2 umfaßt einen Saugraum 4, in dem eine von nicht näher dargestellten Mitteln angetriebene Nockenscheibe 5 einen Pumpenkolben 6 in eine hin- und hergehende sowie rotierende Bewegung versetzt, um hier­durch eine Kraftstofförderung zu Einspritzventilen einer Brennkraftmaschine zu bewirken. Der Pumpenkolben 6 hat eine Steuerbohrung 7, die von einem Ringschieber 8 über­deckbar ist, so daß sich bei Relativbewegung des Ring­ schiebers 8 zum Pumpenkolben 6 eine an sich bekannte Men­genregelung der Einspritzpumpe ergibt. Der Ringschieber 8 ist in Abhängigkeit von der Drehbewegung einer Welle 9 ei­nes Drehmagnetstellwerkes 10 der Stellvorrichtung 3 über eine Mitnehmerkurbel 11 verstellbar, wie dies ebenfalls an sich bekannt ist.FIG. 1 shows part of a fuel injection pump 1 of the distributor type, to the pump housing 2 of which an adjusting device 3 for quantity adjustment is attached. The pump housing 2 comprises a suction chamber 4, in which a cam disk 5, which is driven by means not shown in more detail, sets a pump piston 6 in a reciprocating and rotating movement, in order to thereby effect fuel delivery to injection valves of an internal combustion engine. The pump piston 6 has a control bore 7, which can be covered by a ring slide 8, so that there is relative movement of the ring slide 8 to the pump piston 6 results in a known quantity control of the injection pump. The ring slide 8 is adjustable as a function of the rotary movement of a shaft 9 of a rotary magnet signaling unit 10 of the actuating device 3 via a driver crank 11, as is also known per se.

Das Drehmagnetstellwerk 10 sitzt in einem aus Unterteil 15 und Deckel 16 bestehenden Gehäuse, dessen Unterteil 15 am Pumpengehäuse 2 dicht befestigt ist, wobei seine Wel­le 9 und ein diese führendes Lagerauge 17 am Unterteil 15 durch eine Öffnung 18 im Pumpengehäuse 2 in den Saug­raum 4 ragt. Durch eine Öffnung 19 im Unterteil 15 und die Öffnung 18 ist das Innere des Gehäuses der Stellvor­richtung 3 mit dem Saugraum 4 verbunden, so daß es eben­falls mit Kraftstoff gefüllt ist und in ihm der gleiche Druck wie im Saugraum 4 herrscht. Der Deckel 16 liegt durch einen Dichtungsring 21 abgedichtet auf dem oberen Öffnungsrand des Unterteils 15 auf und ist mit vier Schrauben 22 am Unterteil 15 befestigt. Das Drehmagnet­stellwerk 10 ist im Unterteil 15 mit mehreren, beispiels­weise vier Stehbolzen 24 festgeschraubt, die auch eine Trägerplatte 25 tragen, die sich oberhalb des Drehmagnet­stellwerks 10 im Übergangsbereich des Unterteils 15 zum Deckel 16 erstreckt. Auf der Trägerplatte 25 sind ein Po­tentiometer-Winkelgeber 26 sowie Anschlußklemmen 27 ange­ordnet. Die Widerstandsschicht und die Kontaktbahn des Potentiometer-Winkelgebers 26 sowie die Anschlußklemmen 27 sind mit Leitern 28 verbunden, die sich in der Träger­platte 25 eingebettet erstrecken und von denen lediglich einer in Figur 1 dargestellt ist. Die von den Anschluß­klemmen 27 und vom Winkelgeber 26 entfernt liegenden En­den der Leiter 28 enden gleichmäßig verteilt auf einem Kreis und eines davon in der Mitte des Kreises. Mit ihnen ist das untere Ende 31 von Kontaktstiften 30 verschweißt oder vernietet. Die Kontaktstifte 30 stehen nach oben von der Oberseite der Trägerplatte 25 vor. Ihr unteres Ende 31 ist in der Trägerplatte 25 verankert, die in diesem Be­reich verdickt ausgeführt ist. Ebenso wie die Enden der Leiter 28 sind die Kontaktstifte 30 auf einem Kreis gleich­mäßig verteilt und einer davon in dessen Zentrum angeord­net. Die freien Enden 32 der Kontaktstifte 30 sind von ei­ner Buchse 34 mit kreisringförmigem Querschnitt umgeben, die als einstückiger Ansatz an der Trägerplatte 25 ausge­bildet ist. Die Trägerplatte 25 mit der Buchse 34 besteht aus einem elektrisch isolierenden Kunststoff, beispiels­weise Polyamid, und ist im Spritzgußverfahren gefertigt. Die mit den Leitern 28 verbundenen unteren Enden 31 der Kontaktstifte 30 werden beim Spritzgießen der Trägerplatte 25 von derem Werkstoff umgeben und werden danach von die­sem in richtiger Position gehaltert.The rotary magnetic interlocking 10 is seated in a housing consisting of a lower part 15 and a cover 16, the lower part 15 of which is tightly attached to the pump housing 2, its shaft 9 and a bearing eye 17 guiding it projecting from the lower part 15 through an opening 18 in the pump housing 2 into the suction chamber 4 . Through an opening 19 in the lower part 15 and the opening 18, the interior of the housing of the actuating device 3 is connected to the suction chamber 4, so that it is also filled with fuel and the same pressure as in the suction chamber 4 prevails in it. The cover 16 is sealed by a sealing ring 21 on the upper opening edge of the lower part 15 and is fastened to the lower part 15 with four screws 22. The rotary magnet signal box 10 is screwed into the lower part 15 with several, for example four stud bolts 24, which also carry a carrier plate 25 which extends above the rotary magnet signal box 10 in the transition area of the lower part 15 to the cover 16. A potentiometer angle transmitter 26 and connecting terminals 27 are arranged on the carrier plate 25. The resistance layer and the contact path of the potentiometer angle transmitter 26 and the connecting terminals 27 are connected to conductors 28 which extend embedded in the carrier plate 25 and of which only one is shown in FIG. 1. The ends of the conductors 28, which are remote from the connecting terminals 27 and from the angle transmitter 26, end evenly distributed on a circle and one of them in the center of the circle. With you the lower end 31 of contact pins 30 is welded or riveted. The contact pins 30 protrude upward from the top of the carrier plate 25. Its lower end 31 is anchored in the carrier plate 25, which is made thickened in this area. Like the ends of the conductors 28, the contact pins 30 are evenly distributed on a circle and one of them is arranged in the center thereof. The free ends 32 of the contact pins 30 are surrounded by a bush 34 with an annular cross section, which is designed as a one-piece extension on the carrier plate 25. The carrier plate 25 with the socket 34 consists of an electrically insulating plastic, for example polyamide, and is manufactured by injection molding. The lower ends 31 of the contact pins 30 connected to the conductors 28 are surrounded by the material during the injection molding of the carrier plate 25 and are then held in the correct position by the latter.

Die von der Trägerplatte 25 nach oben abstehende Buchse 34 durchsetzt einem Durchbruch 35 im Deckel 16 mit enger Passung. Wegen dieser engen Passung bestimmt die Buchse 34 die Lage des Deckels 16 auf dem Unterteil 15. Im obe­ren Teil des Durchbruchs 35 ist eine axiale Ringnut 36 eingearbeitet, in der ein Dichtring 37 eingelegt ist. Zum elektrischen Verbinden des Drehmagnetstellwerks 10 über den aus den Kontaktstiften 30 und der Buchse 34 an der Trägerplatte 25 bestehenden Steckeranschluß mit ei­ner Steuereinrichtung 38 dient ein Gegenstecker 40 an ei­ner vom Steuergerät 38 ausgehenden Verbindungsleitung 41. Der Gegenstecker 40 hat einen inneren Isolierkörper 39 mit Kontakthülsen 42, die spiegelbildlich zu den Kontakt­stiften 30 des Steckeranschlußes angeordnet sind, und ei­ne Hülse 43, deren unteres Ende einen Ringquerschnitt hat, der dem der Ringnut 36 im Deckel 16 entspricht. Im aufge­ steckten Zustand umgreift das untere Ende der Hülse 43 das über die Oberseite des Deckels 16 vorstehende Ende der Buchse,wobei es mit seiner Stirnseite den Dichtring 37 in der Ringnut 36 einschließt.The bushing 34 projecting upward from the carrier plate 25 passes through an opening 35 in the cover 16 with a close fit. Because of this tight fit, the bushing 34 determines the position of the cover 16 on the lower part 15. In the upper part of the opening 35, an axial annular groove 36 is incorporated, in which a sealing ring 37 is inserted. A mating connector 40 on a connecting line 41 originating from the control unit 38 is used to electrically connect the rotary magnetic interlocking system 10 to the control device 38 via the plug connection consisting of the contact pins 30 and the socket 34 on the carrier plate 25. The mating connector 40 has an inner insulating body 39 with contact sleeves 42 , which are arranged in mirror image of the contact pins 30 of the plug connection, and a sleeve 43, the lower end of which has an annular cross section which corresponds to that of the annular groove 36 in the cover 16. Im up inserted state, the lower end of the sleeve 43 engages around the end of the socket projecting above the top of the cover 16, the end face of which encloses the sealing ring 37 in the annular groove 36.

Zum Haltern des Gegensteckers 40 hat dessen Hülse 43 ei­nen Bund 44, dessen Unterseite auf der Oberseite des Dek­kels 16 aufliegt und von einem Überwurfring 45 gehalten wird, der mit Schrauben 46 am Deckel 16 befestigt ist. Beim Aufstecken des Gegensteckers 40 dringt das freie En­de der Hülse 43 in die Ringnut 36 des Deckels ein und kommt zur Anlage mit dem Dichtring 37. Beim darauffolgen­den Verspannen mit dem Überwurfring 45 verpreßt die Stirn­seite der Hülse 43 den Dichtring 37, der sich dabei auch radial verformt und unter Spannung am Außenumfang der Buchse 34 und am Innenumfang der Ringnut 36 anliegt. Da­durch wird die Durchführung des Steckeranschlußes durch den Deckel 16 flüssigkeitsdicht abgeschlossen.To hold the mating connector 40, the sleeve 43 has a collar 44, the underside of which rests on the upper side of the cover 16 and is held by a coupling ring 45 which is fastened to the cover 16 by screws 46. When the mating connector 40 is plugged in, the free end of the sleeve 43 penetrates into the annular groove 36 of the cover and comes into contact with the sealing ring 37. When it is subsequently clamped with the coupling ring 45, the end face of the sleeve 43 presses the sealing ring 37, which is also radial deformed and under tension on the outer circumference of the bush 34 and on the inner circumference of the annular groove 36. This completes the implementation of the plug connection through the cover 16 in a liquid-tight manner.

Durch das Einbetten der Leiter 28 und der Kontaktstifte 30 in die Trägerplatte 25 sowie die Anformung der die Stifte 30 umgebenden Buchse 34 an der Trägerplatte 25 wird außerdem eine einfache zeitsparende Montage der Stellvorrichtung 3 erreicht. Die enge Passung zwischen der Buchse 34 und dem Durchbruch 35 im Deckel 16 ist das Innere des Gehäuses der Stellvorrichtung außerdem schmutz­dicht abgeschlossen.By embedding the conductor 28 and the contact pins 30 in the carrier plate 25 and the molding of the socket 34 surrounding the pins 30 on the carrier plate 25, a simple, time-saving assembly of the adjusting device 3 is also achieved. The close fit between the socket 34 and the opening 35 in the cover 16 also seals the interior of the housing of the adjusting device in a dirt-tight manner.

Claims (6)

1. Stellvorrichtung für eine Kraftstoffeinspritzpumpe mit einem flüssigkeitsdichten, aus einem Unterteil (15) und einem Deckel (16) bestehenden Gehäuse, mit einem im Unterteil fest angeordneten elektrischen Stellmotor (10) und einem ebenfalls im Unterteil befestigten Träger für Anschluß- und Steuerelemente für den Stellmotor, sowie mit einem Steckeranschluß (30, 34) in einem Durchbruch (35) des Deckels, dadurch gekennzeichnet, daß der Stek­keranschluß mit dem Träger (25) fest verbunden ist und einen von dem Träger abstehenden Ansatz (34) hat, der den Durchbruch im Deckel (16) mit enger Passung und ab­gedichtet durchsetzt.1. Actuating device for a fuel injection pump with a liquid-tight, consisting of a lower part (15) and a cover (16) housing, with an electric servomotor (10) fixedly arranged in the lower part and a carrier for connecting and control elements for the fastening also fastened in the lower part Servomotor, as well as with a plug connection (30, 34) in an opening (35) in the cover, characterized in that the connector connection is fixedly connected to the carrier (25) and has an extension (34) projecting from the carrier which has the opening interspersed in the cover (16) with a tight fit and sealed. 2. Stellvorrichtung nach Anspruch 1, dadurch gekenn­zeichnet, daß in dem aus einem elektrisch isolierenden Material bestehenden Träger (25) Leiter (28) eingebet­tet und mit diesen verbundene Steckverbindungselemente (30) verankert sind.2. Adjusting device according to claim 1, characterized in that in the carrier (25) consisting of an electrically insulating material, conductors (28) are embedded and with these connected connector elements (30) are anchored. 3. Stellvorrichtung nach Anspruch 2, dadurch gekenn­zeichnet, daß die vom Träger (25) vorstehenden Enden (32) der Steckverbindungselemente (30) frei von dem Ansatz umgeben sind, der die Form einer Buchse (34) hat, deren freies Ende eine Führung für einen Gegen­stecker (40) bildet.3. Adjusting device according to claim 2, characterized in that the ends (32) of the plug connection elements (30) projecting from the carrier (25) are freely surrounded by the projection which has the shape of a socket (34), the free end of which is a guide for forms a mating connector (40). 4. Stellvorrichtung nach Anspruch 3, dadurch gekenn­zeichnet, daß das freie Ende des Ansatzes (34) von einer einen Dichtring (37) aufnehmenden Ringnut (36) im Deckel (16) umgeben ist.4. Adjusting device according to claim 3, characterized in that the free end of the extension (34) is surrounded by a sealing ring (37) receiving annular groove (36) in the cover (16). 5. Stellvorrichtung nach Anspruch 4, dadurch gekenn­zeichnet, daß sich die Ringnut (36) axial im Deckel (16) erstreckt und daß in diese das freie Ende des Gegensteckers (40) ragt, das den Dichtring (37) unter Spannung hält.5. Adjusting device according to claim 4, characterized in that the annular groove (36) extends axially in the cover (16) and in that the free end of the mating connector (40) protrudes, which holds the sealing ring (37) under tension. 6. Stellvorrichtung nach Anspruch 5, dadurch gekenn­zeichnet, daß der Gegenstecker (40) nahe seinem freien Ende einem Bund (44) hat, der gegen den Deckel (16) von einem Überwurfring (45) gedrückt wird.6. Adjusting device according to claim 5, characterized in that the mating connector (40) near its free end has a collar (44) which is pressed against the cover (16) by a coupling ring (45).
EP87102774A 1986-03-25 1987-02-26 Control device for a fuel injection pump Ceased EP0238882A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3609995 1986-03-25
DE19863609995 DE3609995A1 (en) 1986-03-25 1986-03-25 ACTUATING DEVICE FOR A FUEL INJECTION PUMP

Publications (2)

Publication Number Publication Date
EP0238882A2 true EP0238882A2 (en) 1987-09-30
EP0238882A3 EP0238882A3 (en) 1989-05-24

Family

ID=6297204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87102774A Ceased EP0238882A3 (en) 1986-03-25 1987-02-26 Control device for a fuel injection pump

Country Status (4)

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US (1) US4732546A (en)
EP (1) EP0238882A3 (en)
JP (1) JPS62225758A (en)
DE (1) DE3609995A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703073A1 (en) * 1987-02-03 1988-08-11 Bosch Gmbh Robert FUEL INJECTION PUMP
DE3739198C1 (en) * 1987-11-19 1989-05-03 Bosch Gmbh Robert Fuel injection pump for internal combustion engines
DE3740195A1 (en) * 1987-11-27 1989-06-08 Webasto Ag Fahrzeugtechnik ELECTRICAL CONNECTING DEVICE FOR COMPONENTS OF HEATING EQUIPMENT
US4959027A (en) * 1990-02-20 1990-09-25 Itt Corporation Fuel injector adaptor
DE19713869A1 (en) * 1997-04-04 1998-10-08 Bosch Gmbh Robert Fuel injection pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1938421A1 (en) * 1969-07-29 1971-02-11 Wilhelm Ruppert Process for the production of carrier bodies with strip conductors embedded between insulating material
DE1910112B2 (en) * 1969-02-28 1973-12-20 Robert Bosch Gmbh, 7000 Stuttgart Control device for the delivery rate of an injection pump for internal combustion engines
DE3004035A1 (en) * 1980-02-05 1981-08-13 Robert Bosch Gmbh, 7000 Stuttgart CONTROL DEVICE FOR A FUEL INJECTION PUMP
EP0059462A2 (en) * 1981-03-02 1982-09-08 Thaler, Hartmuth F., Ing. grad. Pressurized connection pin
DE3216984A1 (en) * 1982-05-06 1983-11-10 Robert Bosch Gmbh, 7000 Stuttgart ELECTRICAL CONNECTOR

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3711815A (en) * 1971-06-24 1973-01-16 Gen Connector Tight angle multi-contact electrical connector
US3736548A (en) * 1971-07-28 1973-05-29 R Double Electrical coupler
JPS5648104A (en) * 1979-09-28 1981-05-01 Hitachi Ltd Superconductive apparatus
JPS57135232A (en) * 1981-02-13 1982-08-20 Nissan Motor Co Ltd Electronic controlling device for fuel injection of internal combustion engine
DE3148596A1 (en) * 1981-12-09 1983-07-21 Robert Bosch Gmbh, 7000 Stuttgart Device for generating a fuel flow rate signal
JPS59110896A (en) * 1982-12-15 1984-06-26 Ebara Corp Submersible motor pump
DE3507525C1 (en) * 1985-03-04 1986-09-25 Schulte-Elektrotechnik GmbH & Co KG, 5880 Lüdenscheid Electrical device plug

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1910112B2 (en) * 1969-02-28 1973-12-20 Robert Bosch Gmbh, 7000 Stuttgart Control device for the delivery rate of an injection pump for internal combustion engines
DE1938421A1 (en) * 1969-07-29 1971-02-11 Wilhelm Ruppert Process for the production of carrier bodies with strip conductors embedded between insulating material
DE3004035A1 (en) * 1980-02-05 1981-08-13 Robert Bosch Gmbh, 7000 Stuttgart CONTROL DEVICE FOR A FUEL INJECTION PUMP
EP0059462A2 (en) * 1981-03-02 1982-09-08 Thaler, Hartmuth F., Ing. grad. Pressurized connection pin
DE3216984A1 (en) * 1982-05-06 1983-11-10 Robert Bosch Gmbh, 7000 Stuttgart ELECTRICAL CONNECTOR

Also Published As

Publication number Publication date
US4732546A (en) 1988-03-22
DE3609995A1 (en) 1987-10-01
JPS62225758A (en) 1987-10-03
EP0238882A3 (en) 1989-05-24

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