EP0879351B1 - Intake system - Google Patents

Intake system Download PDF

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Publication number
EP0879351B1
EP0879351B1 EP96944636A EP96944636A EP0879351B1 EP 0879351 B1 EP0879351 B1 EP 0879351B1 EP 96944636 A EP96944636 A EP 96944636A EP 96944636 A EP96944636 A EP 96944636A EP 0879351 B1 EP0879351 B1 EP 0879351B1
Authority
EP
European Patent Office
Prior art keywords
inlet manifold
fuel distributor
fuel
connection
manifold according
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
EP96944636A
Other languages
German (de)
French (fr)
Other versions
EP0879351A1 (en
Inventor
Rudolf Leipelt
Volker Ernst
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.)
Mann and Hummel GmbH
Original Assignee
Filterwerk Mann and Hummel 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 Filterwerk Mann and Hummel GmbH filed Critical Filterwerk Mann and Hummel GmbH
Publication of EP0879351A1 publication Critical patent/EP0879351A1/en
Application granted granted Critical
Publication of EP0879351B1 publication Critical patent/EP0879351B1/en
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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10078—Connections of intake systems to the engine
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; Sealings
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/08—Thermoplastics

Definitions

  • a fuel rail to supply the fuel to the to arrange appropriate injectors.
  • a fuel distributor is known from WO 90-13740 known for fuel injection systems of internal combustion engines.
  • This fuel rail is usually a multifunctional component that carries the injectors, also with the corresponding electrical connections are provided and a feed for the Has fuel.
  • the fuel rail is screwed to one Intake pipe attached, the electrical distribution list is also fixed corresponding screw connections. With appropriate backup, there are Screw connections are extremely reliable, but the high disadvantage Assembly effort and the associated high manufacturing costs.
  • the invention is therefore based on the object of an intake manifold To create fuel rail to supply the fuel to an internal combustion engine which the assembly effort is significantly reduced. This task will start from the preamble of the main claim solved by its characteristic features.
  • the main advantage of the invention is that the fuel rail with a plug or Snap or snap connection is attached.
  • the assembly is therefore without tools possible and can be done manually or automatically in a simple manner.
  • connection is according to a further embodiment of the Invention further increased by the arrangement of an additional securing element.
  • securing element consists of a resilient, clamped Locking pin.
  • a self-tapping screw connection to provide or immediate locking via a snap-in connection on the fuel rail to make.
  • Suitable O-rings can be provided for the injection valve and fuel rail.
  • FIG. 1 it was known to have a distributor pipe (10) with a screw connection (19) to attach an intake pipe (20). Between manifold (10) and intake pipe (20) the injection valve (21) was inserted.
  • this type of attachment is very complex because in addition to the intake pipe (20), which is usually made of plastic Heat sink threaded bushings (22) are required, and spacer sleeves (23) are also on the plastic distributor pipe is necessary.
  • FIG. 2 shows a plan view of a fuel rail with an example of a solution according to the invention.
  • the fuel rail (10) is on two connection elements (11,12) of the suction pipe (17). Are between the fuel rail and intake manifold the injection valves (13, 14) are shown, spring clips (15, 16) are used as a plug-in fuse intended.
  • the fuel supply to the fuel rail (10) takes place via the Connection piece (24), the fuel distributor (10) shown is a return-free system.
  • Figures 3a-3i show different variants of a connector.
  • FIGS 3a and 3b show a fuel rail (10) on a connecting element (11) of the Intake pipe (17) is attached and held with a securing clip (15).
  • FIG. 3c is also a securing clip, but that is Clip not made of plastic according to Figures 3a and 3b but from a spring steel (25) or bronze sheet manufactured.
  • the locking pin (26) is riveted to the clip.
  • Figure 3d shows a securing element with a self-tapping screw (28).
  • Figure 3e (section I-I of Figure 3a) and 3f each show a locking pin (18) also a positive connection for attaching the fuel rail to the Represents intake pipe and is made for example of plastic.
  • Figure 3g shows a pin element (27) which is made of spring tape or spring wire.
  • Figure 3d shows a securing element with a self-tapping screw (28).
  • connection element (11) To provide snap or locking element (29,30).
  • Fuel distributor (10) In conjunction with a counterpart on the Fuel distributor (10) is also a reliable connection of the fuel distributor here and intake pipe (17) or the corresponding connection element (11) of the intake pipe achieved.
  • additional securing elements are omitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

An intake manifold is proposed for the supply or air for an internal combustion engine with a fuel distributor (10). The fuel distributor (10) is fixed to the intake manifold (17) through a plug-in, catch or snap connection.

Description

Bei einem Ansaugrohr für die Zuführung der Luft für eine Brennkraftmaschine, ist es erforderlich, auch ein Kraftstoffverteilerrohr zur Zuführung des Kraftstoffs an die entsprechenden Einspritzventile anzuordnen. Aus der WO 90-13740 ist ein Kraftstoffverteiler für Kraftstoffeinspritzanlagen von Brennkraftmaschinen bekannt. Dieser Kraftstoffverteiler ist üblicher Weise ein multifunktionsbauteil, welches die Einspritzventile trägt, außerdem mit den entsprechenden elektrischen Anschlüssen versehen ist und eine Zuführung für den Kraftstoff aufweist. Der Kraftstoffverteiler wird mit Schraubverbindungen an einem Ansaugrohr befestigt, die Fixierung der elektrischen Verteilerliste erfolgt ebenfalls mit entsprechenden Schraubverbindungen. Bei entsprechender Sicherung sind solche Schraubverbindungen zwar äußerst zuverlässig nachteilig ist jedoch der hohe Montageaufwand und damit einhergehend die hohen Fertigungskosten.It is with an intake pipe for the supply of air for an internal combustion engine also required a fuel rail to supply the fuel to the to arrange appropriate injectors. A fuel distributor is known from WO 90-13740 known for fuel injection systems of internal combustion engines. This fuel rail is usually a multifunctional component that carries the injectors, also with the corresponding electrical connections are provided and a feed for the Has fuel. The fuel rail is screwed to one Intake pipe attached, the electrical distribution list is also fixed corresponding screw connections. With appropriate backup, there are Screw connections are extremely reliable, but the high disadvantage Assembly effort and the associated high manufacturing costs.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Ansaugrohr mit einem Kraftstoffverteiler zu Zuführung des Kraftstoffs an einer Brennkraftmaschine zu schaffen, bei welchem der Montageaufwand erheblich reduziert wird. Diese Aufgabe wird ausgehen von dem Oberbegriff des Hauptanspruchs durch dessen kennzeichnenden Merkmale gelöst.The invention is therefore based on the object of an intake manifold To create fuel rail to supply the fuel to an internal combustion engine which the assembly effort is significantly reduced. This task will start from the preamble of the main claim solved by its characteristic features.

Der wesentliche Vorteil der Erfindung liegt darin, daß der Kraftstoffverteiler mit einer Steck-oder Rast- oder Schnappverbindung befestigt ist. Die Montage ist damit ohne Hilfsmittel möglich und läßt sich in einfacher Weise manuell oder automatisiert vornehmen.The main advantage of the invention is that the fuel rail with a plug or Snap or snap connection is attached. The assembly is therefore without tools possible and can be done manually or automatically in a simple manner.

Die Zuverlässigkeit einer solchen Verbindung wird gemäß einer weiteren Ausgestaltung der Erfindung durch die Anordnung eines zusätzlichen Sicherungselementes weiter erhöht. In einer Ausgestaltung des Sicherungselements besteht dieses aus einem federnd, eingespannten Sicherungsstift. Es besteht auch die Möglichkeit, eine selbstformende Schraubverbindung vorzusehen oder über eine Rastverbindung am Kraftstoffverteiler die unmittelbare Sicherung vorzunehmen.The reliability of such a connection is according to a further embodiment of the Invention further increased by the arrangement of an additional securing element. In One embodiment of the securing element consists of a resilient, clamped Locking pin. There is also the possibility of a self-tapping screw connection to provide or immediate locking via a snap-in connection on the fuel rail to make.

Zur flüssigkeitsdichten Verbindung zwischen Ansaugrohr und Kraftstoffverteiler bzw. Einspritzventil und Kraftstoffverteiler können geeignete O-Ringe vorgesehen sein. For a liquid-tight connection between the intake pipe and fuel rail or Suitable O-rings can be provided for the injection valve and fuel rail.

Diese und weitere Merkmale von bevorzugten Weiterbildungen der Erfindung gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor.These and other features of preferred developments of the invention go beyond from the claims also from the description and the drawings.

Die Erfindung wird nachfolgender Hand von Ausführungsbeispielen näher erläutert.The invention is explained in more detail below using exemplary embodiments.

Es zeigt:

Figur 1
ein Ansaugrohr nach dem Stand der Technik
Figur 2
eine Draufsicht auf einen Kraftstoffverteiler
Figur 3a-3i
verschiedene Varianten einer Steckverbindung für einen Kraftstoffverteiler
It shows:
Figure 1
a suction pipe according to the prior art
Figure 2
a top view of a fuel rail
Figure 3a-3i
Different variants of a connector for a fuel rail

Gemäß Figur 1 war es bekannt ein Verteilerrohr (10) mit einer Schraubverbindung (19) an einem Ansaugrohr (20) zu befestigen. Zwischen Verteilerrohr (10) und Ansaugrohr (20) wurde das Einspritzventil (21) eingesteckt. Diese Befestigungsart ist jedoch sehr Aufwendig da bei dem Ansaugrohr (20), welches normalerweise aus Kunststoff besteht, zusätzlich Warmeinsenkgewindebuchsen (22) erforderlich sind, außerdem sind Distanzhülsen (23) an dem aus Kunststoff bestehenden Verteilerrohr notwendig.According to FIG. 1, it was known to have a distributor pipe (10) with a screw connection (19) to attach an intake pipe (20). Between manifold (10) and intake pipe (20) the injection valve (21) was inserted. However, this type of attachment is very complex because in addition to the intake pipe (20), which is usually made of plastic Heat sink threaded bushings (22) are required, and spacer sleeves (23) are also on the plastic distributor pipe is necessary.

Figur 2 zeigt eine Draufsicht auf einen Kraftstoffverteiler mit einem Beispiel einer erfindungsgemäßen Lösung. Der Kraftstoffverteiler (10) ist an zwei Anschlußelementen (11,12) des Ansaugrohrs (17) aufgesteckt. Zwischen Kraftstoffverteiler und Ansaugrohr sind die Einspritzventile (13,14) dargestellt, als Stecksicherung sind Federklammern (15,16) vorgesehen. Der Kraftstoffzulauf zu dem Kraftstoffverteiler (10) erfolgt über den Anschlußstutzen (24), es handelt sich bei dem gezeigten Kraftstoffverteiler (10) um ein rücklauffreies System.Figure 2 shows a plan view of a fuel rail with an example of a solution according to the invention. The fuel rail (10) is on two connection elements (11,12) of the suction pipe (17). Are between the fuel rail and intake manifold the injection valves (13, 14) are shown, spring clips (15, 16) are used as a plug-in fuse intended. The fuel supply to the fuel rail (10) takes place via the Connection piece (24), the fuel distributor (10) shown is a return-free system.

Figuren 3a-3i zeigen verschiedene Varianten einer Steckverbindung.Figures 3a-3i show different variants of a connector.

Figur 3a und 3b zeigen einen Kraftstoffverteiler (10) der auf ein Anschlußelement (11) des Ansaugrohres (17) aufgesteckt ist und mit einer Sicherungsklammer (15) gehalten wird. Figures 3a and 3b show a fuel rail (10) on a connecting element (11) of the Intake pipe (17) is attached and held with a securing clip (15).

Bei der Figur 3c handelt es sich ebenfalls um eine Sicherungsklammer, allerdings ist die Klammer nicht aus Kunststoff gemäß Figur 3a und 3b sondern aus einem Federstahl (25) oder-Bronzeblech hergestellt. Der Sicherungsstift (26) ist mit der Klammer vernietet.FIG. 3c is also a securing clip, but that is Clip not made of plastic according to Figures 3a and 3b but from a spring steel (25) or bronze sheet manufactured. The locking pin (26) is riveted to the clip.

Figur 3d zeigt ein Sicherungselement mit einer selbstformenden Schraube (28).Figure 3d shows a securing element with a self-tapping screw (28).

Figur 3e ( Schnitt I-I der Figur 3a) und 3f zeigen jeweils einen Sicherungsstift (18) der ebenfalls eine formschlüssige Verbindung zum Befestigen des Kraftstoffverteilers an dem Ansaugrohr darstellt und beispielsweise aus Kunststoff gefertigt ist.Figure 3e (section I-I of Figure 3a) and 3f each show a locking pin (18) also a positive connection for attaching the fuel rail to the Represents intake pipe and is made for example of plastic.

Figur 3g zeigt ein Stiftelement (27) welches aus Federband oder Federdraht hergestellt ist.Figure 3g shows a pin element (27) which is made of spring tape or spring wire.

Figur 3d zeigt ein Sicherungselement mit einer selbtsformenden Schraube (28).Figure 3d shows a securing element with a self-tapping screw (28).

Es besteht auch die Möglichkeit gemäß Figur 3h und 3i an dem Anschlußelement (11) ein Schnapp- oder Rastelement (29,30) vorzusehen. In Verbindung mit einem Gegenstück an dem Kraftstoffverteiler (10) wird auch hier eine zuverlässige Verbindung von Kraftstoffverteiler und Ansaugrohr (17) bzw. dem entsprechenden Anschlußelement (11) des Ansaugrohres erzielt. Bei den Lösungen Figur 3h und 3i entfallen zusätzliche Sicherungselemente.There is also the possibility according to FIGS. 3h and 3i on the connection element (11) To provide snap or locking element (29,30). In conjunction with a counterpart on the Fuel distributor (10) is also a reliable connection of the fuel distributor here and intake pipe (17) or the corresponding connection element (11) of the intake pipe achieved. In the solutions of Figures 3h and 3i, additional securing elements are omitted.

Claims (6)

  1. Inlet manifold for supplying air for an internal combustion engine having a fuel distributor (10), wherein the fuel distributor (10) is mounted on the inlet manifold (17) by at least two connecting members (11, 12) by means of a plug-in or locking or snap-in connection, and injection valves (13, 14) are disposed between fuel distributor and inlet manifold.
  2. Inlet manifold according to claim 1, characterised in that at least one additional securing member is provided.
  3. Inlet manifold according to claim 2, characterised in that the securing member is a resiliently clamped securing pin.
  4. Inlet manifold according to claim 2, characterised in that the securing member is an automatically forming screw connection.
  5. Inlet manifold according to one of the previous claims, characterised in that at least one locking projection is provided on the fuel distributor and engages in a locking clamp of the inlet manifold.
  6. Inlet manifold according to one of the previous claims, characterised in that the individual structural parts are sealed in a fluid-tight manner by means of O-rings.
EP96944636A 1996-02-12 1996-12-21 Intake system Expired - Lifetime EP0879351B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19604839 1996-02-12
DE19604839 1996-02-12
PCT/EP1996/005804 WO1997030282A1 (en) 1996-02-12 1996-12-21 Intake system

Publications (2)

Publication Number Publication Date
EP0879351A1 EP0879351A1 (en) 1998-11-25
EP0879351B1 true EP0879351B1 (en) 2001-10-31

Family

ID=7785011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96944636A Expired - Lifetime EP0879351B1 (en) 1996-02-12 1996-12-21 Intake system

Country Status (10)

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US (1) US6148799A (en)
EP (1) EP0879351B1 (en)
AR (1) AR005774A1 (en)
BR (1) BR9612496A (en)
CA (1) CA2246368A1 (en)
DE (1) DE59608090D1 (en)
ID (1) ID15865A (en)
IN (1) IN186379B (en)
MX (1) MX9806363A (en)
WO (1) WO1997030282A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2779681B1 (en) * 1998-06-10 2000-08-04 Coutier Moulage Gen Ind INTAKE DISTRIBUTOR / INJECTION RAMP ASSEMBLY ASSEMBLED BY A QUICK CONNECTION DEVICE
US6513499B2 (en) * 2000-04-13 2003-02-04 Siemens Vdo Automotive Inc. Snap fuel rail
DE10109408A1 (en) * 2001-02-28 2002-09-05 Bosch Gmbh Robert fastening device
JP4305339B2 (en) * 2004-09-08 2009-07-29 日産自動車株式会社 Mounting structure of fuel injection device in internal combustion engine
JP2007132449A (en) * 2005-11-11 2007-05-31 Bosch Corp Circulation connector, connecting structure of circulation connector and fuel circulating system
DE102010051488A1 (en) * 2010-11-15 2012-05-16 Audi Ag Fastening arrangement of a fuel supply device to an internal combustion engine, and method for fixing a fuel supply device to an internal combustion engine
DE102012206887A1 (en) * 2012-04-26 2013-10-31 Robert Bosch Gmbh Arrangement with a fuel distributor and a plurality of fuel injection valves
US9567961B2 (en) * 2015-03-16 2017-02-14 Delphi Technologies, Inc. Arrangement for retaining a fuel injector to a fuel rail socket

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Publication number Priority date Publication date Assignee Title
DE2908095C2 (en) * 1979-03-02 1984-02-16 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system for internal combustion engines
DE2926490A1 (en) * 1979-06-30 1981-02-05 Bosch Gmbh Robert FUEL INJECTION SYSTEM
US4457280A (en) * 1982-05-04 1984-07-03 Sharon Manufacturing Company Fuel injection rail assembly
US4539961A (en) * 1982-08-23 1985-09-10 General Motors Corporation Fuel rail
DE3428597C2 (en) * 1984-08-02 1986-11-27 Bayerische Motoren Werke AG, 8000 München Connection of two pipe sections arranged coaxially one behind the other, in particular an injection nozzle, with the coaxially arranged connection piece of an injection line
US4909220A (en) * 1987-08-03 1990-03-20 General Motors Corporation Fuel injection
DE3904479A1 (en) * 1989-02-15 1990-08-16 Bosch Gmbh Robert CONNECTING ELEMENT
DE3915111A1 (en) * 1989-05-09 1990-11-15 Bosch Gmbh Robert FUEL DISTRIBUTOR FOR FUEL INJECTION SYSTEMS OF INTERNAL COMBUSTION ENGINES
US5056489A (en) * 1989-07-10 1991-10-15 Siemens-Bendix Automotive Electronics L.P. Fuel rail for v-type engine
US4991557A (en) * 1989-08-21 1991-02-12 Siemens-Bendix Automotive Electronics L.P. Self-attaching electromagnetic fuel injector
US5044338A (en) * 1990-01-23 1991-09-03 Siemens Automotive L.P. Fuel rail vibration damper
DE4128086A1 (en) * 1991-08-24 1993-02-25 Bosch Gmbh Robert FUEL DISTRIBUTOR
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
JPH06264844A (en) * 1993-03-15 1994-09-20 Nissan Motor Co Ltd Fitting structure for fuel feed pipe of internal combustion engine
US5301647A (en) * 1993-06-14 1994-04-12 Siemens Automotive L.P. Fuel injector attachment clip
FR2714934B1 (en) * 1994-01-10 1996-03-29 Peugeot Fuel injection engine arrangement with ventilated injectors.

Also Published As

Publication number Publication date
ID15865A (en) 1997-08-14
IN186379B (en) 2001-08-18
MX9806363A (en) 1998-10-31
EP0879351A1 (en) 1998-11-25
WO1997030282A1 (en) 1997-08-21
BR9612496A (en) 1999-07-20
CA2246368A1 (en) 1997-08-21
US6148799A (en) 2000-11-21
AR005774A1 (en) 1999-07-14
DE59608090D1 (en) 2001-12-06

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