WO2001006110A1 - Internal combustion engine induction module - Google Patents

Internal combustion engine induction module Download PDF

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Publication number
WO2001006110A1
WO2001006110A1 PCT/EP2000/006499 EP0006499W WO0106110A1 WO 2001006110 A1 WO2001006110 A1 WO 2001006110A1 EP 0006499 W EP0006499 W EP 0006499W WO 0106110 A1 WO0106110 A1 WO 0106110A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder head
internal combustion
combustion engine
functional component
suction module
Prior art date
Application number
PCT/EP2000/006499
Other languages
German (de)
French (fr)
Inventor
Thomas Jessberger
Achim Rehmann
Original Assignee
Filterwerk Mann+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
Priority claimed from DE19960223A external-priority patent/DE19960223A1/en
Application filed by Filterwerk Mann+Hummel Gmbh filed Critical Filterwerk Mann+Hummel Gmbh
Publication of WO2001006110A1 publication Critical patent/WO2001006110A1/en

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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
    • F02M35/02—Air cleaners
    • F02M35/04—Air cleaners specially arranged with respect to engine, to intake system or specially adapted to vehicle; Mounting thereon ; Combinations with other devices
    • 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
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10288—Air intakes combined with another engine part, e.g. cylinder head cover or being cast in one piece with the exhaust manifold, cylinder head or engine block
    • 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
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10354—Joining multiple sections together
    • 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
    • F02M35/104—Intake manifolds
    • F02M35/112—Intake manifolds for engines with cylinders all in one line

Definitions

  • the invention relates to a suction module for an internal combustion engine, which consists of an intake manifold and at least one further functional component, according to the preamble of claim 1.
  • Such suction modules are used to supply the required combustion air to the associated internal combustion engine.
  • An interface between the intake manifold and the internal combustion engine is necessary for this purpose.
  • This generally consists of a cylinder head flange on the intake manifold, which can be attached to the cylinder head in such a way that the combustion air can be passed from outlets on the intake manifold through the cylinder head to the inlets on the cylinders.
  • This connection must be sealed, which is why the intake manifold flange is screwed to the cylinder head.
  • This connection can also be used to fasten the intake manifold, since the intake manifold is very stable in the area of the cylinder head flange.
  • EP 757 172 B1 proposes a suction pipe which, instead of screws, brackets on the cylinder head flange, which communicate with corresponding receptacles on the cylinder head. These can be plugged on to connect the intake pipe to the internal combustion engine, this joining movement being easier to generate than a screwing movement for corresponding fastening screws. In addition, this changes the joining direction, which can make it easier to access the clip connection using a suitable joining tool. Such a clamp connection with clamps 33 is such. B. shown in Figure 1 of said document. This intake manifold also has an additional functional component 53.
  • the object of the invention is therefore to provide a suction module for an internal combustion engine which achieves a high level of economy both in manufacture and in assembly in a confined space. This object is solved by the features of claim 1.
  • the suction module according to the invention essentially consists of at least two main components.
  • One is the intake manifold, which is constructed in a known manner, that is to say has an inlet for the combustion air and an outlet per cylinder of the internal combustion engine.
  • several outlets per cylinder of the internal combustion engine can also be provided.
  • the outlets are provided for connection to the cylinder head of the internal combustion engine.
  • the other component can be any other functional component that is integrated into the suction module for mostly economic reasons. At the same time, installation space can be saved through the integration.
  • the suction module according to the invention is characterized in that the connection between the cylinder head and the respective outlets of the suction pipe is designed as a sealed plug connection. in comparison to known solutions, this plug connection does not contribute to the complete position fixation of the suction module. Rather, a further device for the fixed mounting of the suction module on the internal combustion engine is necessary. This is integrated into the other functional components, so that the suction module can be installed in the area of the cylinder head simply by plugging it in. Further fastening means such as screws or clamps, which normally still have to be installed in this area of restricted space, can be omitted in the solution of the suction module according to the invention.
  • the further functional component lies in an area that is more easily accessible for the fastening means, so that the assembly process of the suction module on the internal combustion engine can be optimized with regard to the assembly process.
  • the optimization of the assembly process initially consists of relocating the assembly equipment to the functional component.
  • the integration of the functional component in the suction module also saves the assembly effort of having to additionally fasten the functional component in the engine compartment. This also optimizes assembly.
  • the integrated component itself can be mounted on the intake manifold. In this case, only the final assembly effort in the engine compartment is saved.
  • a cheaper alternative results from the fact that the herte functional component is made in one piece with the intake manifold. In this case, a pre-assembly is saved.
  • the intake manifold mounted in the plug connection to the cylinder head will generally have an axial degree of freedom with respect to the plug direction. This can be limited on one side by a stop of the inserted intake manifold in the cylinder head. At least the direction of extraction of the intake manifold from the cylinder head must be prevented by mounting the additional functional component on the internal combustion engine. In this way, the complete position fixation of the suction module described above is created.
  • the functional component is a cylinder head cover.
  • cylinder head covers are known in principle and are intended for mounting on the internal combustion engine. This can be done by means of a flange-like screw connection, which at the same time leads to a seal between the cylinder head cover and the cylinder head. In this way, a firm connection is achieved, which can ensure a complete position fixation of the suction module without further ado.
  • the cylinder head cover is particularly suitable as a functional component because it has a meaningful geometric connection with the air intake to the cylinder.
  • the cylinder head cover is therefore usually adjacent to the intake manifold, so that a one-piece production is particularly useful. Both parts can be made of plastic, which creates a lightweight integral component.
  • Screw connections advantageously enable the bridging of axial tolerances of the connection and the simultaneous sealing of flange connections.
  • the screws are inexpensive to procure as standard parts.
  • the seal in the plug connection between the intake manifold and the cylinder head can be ensured by an O-ring.
  • O-ring are also inexpensive to obtain as a standard part and are simple to be attached to one of the connection partners, in particular the intake manifold. This makes assembly easier because the sealant can be preassembled accordingly.
  • an O-ring is particularly advantageous if these are selected with a cross-sectional area that is large compared to the diameter. In particular, this condition is met if the ratio d / D between the outer diameter D of the O-ring and the diameter d of the cross-sectional area is more than 0.15.
  • the O-ring can compensate for tolerances such as out-of-roundness of the connection partners or tolerances for the distances between the individual outlets, which means that a more reliable connection can be made.
  • the tolerance requirements for the manufacture of the components decrease, which makes the solution according to the invention more economical to manufacture.
  • the profile seal can e.g. B. have a V-shaped cross section, whereby two lips are formed, one of which is supported at the outlet of the suction pipe and the other on the cylinder head.
  • the tip of the V is advantageously aligned with the interior to be sealed, since this creates a negative pressure.
  • the lips are pressed against the communicating sealing surfaces to increase the seal.
  • the intake manifold and the functional component are made in one piece, the distance between these two components being bridged by connecting ribs.
  • the connecting ribs result in a minimal amount of material in the one-piece production of the intake manifold and functional component. They can also reduce the transmission of vibrations in the intake manifold, which are due to the pressure pulsation of the intake air. This contributes to an improvement in the acoustic behavior of the intake manifold and reduces the mechanical stress on the functional component.
  • Figure 1 shows the partially cut view of an intake manifold, in which a cylinder head cover is integrated as a functional component and
  • FIG. 2 shows the section A-A according to FIG. 1.
  • a suction module 10 essentially has as components a suction pipe 11 and a cylinder head cover 12, which are connected to one another by connecting ribs 13.
  • the part of the suction pipe 11 has an inlet 14 for the combustion air and outlets 15, one of which can be seen in the cut-open part of the suction pipe.
  • connection between the cylinder head 19 and the suction module 10 is shown in detail in FIG. With the help of screws 20, the cylinder head cover 12 is fixed via the receiving holes 18. In the area of the suction pipe 11, a plug connection 21 is produced, which connects the outlets 15 to suction channels 22.
  • the intake ducts are designed as connecting pieces 23 in the cylinder head 19.
  • the plug connection 21 is sealed by O-rings 24. At the same time, these ensure tolerance compensation, since the connecting pieces 23 have a smaller outside diameter than the inside diameter of the outlets 15. In addition to the tolerance compensation, mechanical vibration isolation is thereby achieved.
  • the suction module is advantageously made of plastic.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The invention concerns an induction module for an internal combustion engine comprising, besides an intake manifold, another functional component, in particular a cylinder head cover. The invention is characterised in that the intake manifold (11) and the cylinder head cover (12) are connected for example by connecting ribs (13). The outlets (15) form with the inlets on the cylinder side a plug-in connection whereas the cylinder head cover is connected to the cylinder head by inspection holes (18). Thus the intake manifold is simultaneously completely installed. Advantageously a screw-type assembly can be provided at the intake manifold, thereby considerably facilitating the fixing of the induction module since the screw-type assembly can be positioned in a site of the engine compartment with easier access, in particular at the cylinder head cover.

Description

Saugmodul für eine Brennkraftmaschine Suction module for an internal combustion engine
Beschreibungdescription
Stand der TechnikState of the art
Die Erfindung betrifft ein Saugmodul für eine Brennkraftmaschine, welches aus einem Saugrohr sowie mindestens einer weiteren Funktionskomponente besteht, nach der Gattung des Patentanspruches 1.The invention relates to a suction module for an internal combustion engine, which consists of an intake manifold and at least one further functional component, according to the preamble of claim 1.
Derartige Saugmodule werden eingesetzt, um die benötigte Verbrennungsluft der zugehörigen Brennkraftmaschine zuzuleiten. Zu diesem Zweck ist eine Schnittstelle zwischen Saugrohr und Brennkraftmaschine notwendig. Diese besteht im allgemeinen aus einem Zyiinderkopfflansch am Saugrohr, welches derart am Zylinderkopf befestigbar ist, daß die Verbrennungsluft von Auslässen am Saugrohr durch den Zylinderkopf zu den Einlassen an den Zylindern geleitet werden kann. Diese Verbindung muß abgedichtet werden, weswegen der Saugrohrflansch mit dem Zylinderkopf verschraubt wird. Diese Verbindung kann gleichzeitig zur Befestigung des Saugrohres dienen, da das Saugrohr im Bereich des Zylinderkopfflansches sehr stabil ausgeführt ist.Such suction modules are used to supply the required combustion air to the associated internal combustion engine. An interface between the intake manifold and the internal combustion engine is necessary for this purpose. This generally consists of a cylinder head flange on the intake manifold, which can be attached to the cylinder head in such a way that the combustion air can be passed from outlets on the intake manifold through the cylinder head to the inlets on the cylinders. This connection must be sealed, which is why the intake manifold flange is screwed to the cylinder head. This connection can also be used to fasten the intake manifold, since the intake manifold is very stable in the area of the cylinder head flange.
Um die Montage des Saugrohres am Zylinderkopf wirtschaftlich gestalten zu können, soll die Verschraubung desselben mit einem möglichst hohem Automatisierungsgrad erfolgen. Hieraus ergibt sich die Forderung, daß die Flanschverbindung zugänglich für Schraubautomaten sein soll, die nach Möglichkeit alle Schrauben am Zyiinderkopfflansch gleichzeitig anziehen. Die Erreichung dieses konstruktiven Zieles wird jedoch deutlich erschwert, da an der Brennkraftmaschine im Bereich des Zylinderkopfflansches eine Vielzahl von weiteren, für die Funktion der Brennkraftmaschine notwendigen Komponenten, angebracht werden muß. Diese erschweren die Zugänglichkeit zu den Flanschlöchern durch eine Einengung des Bauraums.In order to be able to economically design the installation of the intake manifold on the cylinder head, the same should be screwed with the highest possible degree of automation. This results in the requirement that the flange connection should be accessible to automatic screwing machines which, if possible, tighten all screws on the cylinder head flange at the same time. The achievement of this design goal is, however, made significantly more difficult since a large number of further components necessary for the function of the internal combustion engine have to be attached to the internal combustion engine in the region of the cylinder head flange. This complicates the accessibility to the flange holes by narrowing the installation space.
Um die Montage dennoch wirtschaftlich gestalten zu können, wird in der EP 757 172 B1 ein Saugrohr vorgeschlagen, welches an Stelle von Schrauben Befestigungs- klammern am Zyiinderkopfflansch vorsieht, welche mit entsprechenden Aufnahmen am Zylinderkopf kommunizieren. Diese können zur Verbindung des Saugrohres mit der Brennkraftmaschine aufgesteckt werden, wobei diese Fügebewegung einfacher zu erzeugen ist, als eine Schraubbewegung für entsprechende Befestigungsschrauben. Außerdem wird damit die Fügerichtung geändert, was eine Erreichbarkeit durch ein entsprechendes Fügewerkzeug der Klammerverbindung erleichtern kann. Eine derartige Klammerverbindung mit Klammern 33 ist z. B. in der Figur 1 des genannten Dokuments dargestellt. Dieses Saugrohr weist weiterhin eine zusätzliche Funktionskomponente 53 auf.In order to still be able to design the assembly economically, EP 757 172 B1 proposes a suction pipe which, instead of screws, brackets on the cylinder head flange, which communicate with corresponding receptacles on the cylinder head. These can be plugged on to connect the intake pipe to the internal combustion engine, this joining movement being easier to generate than a screwing movement for corresponding fastening screws. In addition, this changes the joining direction, which can make it easier to access the clip connection using a suitable joining tool. Such a clamp connection with clamps 33 is such. B. shown in Figure 1 of said document. This intake manifold also has an additional functional component 53.
Die Lösung in genanntem Dokument vermag die Wirtschaftlichkeit der Montage des Saugrohres zu steigern. Dies ist jedoch nur unter der Voraussetzung eines einwandfreien Funktionierens der Klammerverbindung möglich. Hierzu müssen jedoch im Vergleich zu einer Schraubverbindung genauere Fertigungstoleranzen eingehalten werden. Die Klammerverbindung vermag Toleranzen nämlich nur in einem sehr kleinen Bereich auszugleichen, da die Klammerspannung von den Toleranzen abhängt und für eine einwandfreie Dichtung des Saugrohres gegen den Zylinderkopf notwendig ist. Eine Schraubverbindung vermag derartige Toleranzen besser auszugleichen, da sie als Befestigungsmittel durch das Gewinde in ihrer Einspannlänge variabel ist. Die Steigerung der Wirtschaftlichkeit in der Montage muß also mit einer Verminderung der Wirtschaftlichkeit in der Fertigung des vorgeschlagenen Saugrohres bezahlt werden. In der Gesamtrechnung ergibt sich daher nur ein unwesentlicher Vorteil.The solution in the document mentioned can increase the economy of the assembly of the suction pipe. However, this is only possible if the clamp connection functions properly. For this purpose, however, more precise manufacturing tolerances must be observed compared to a screw connection. The clamp connection is only able to compensate for tolerances in a very small area, since the clamp tension depends on the tolerances and is necessary for a perfect sealing of the intake manifold against the cylinder head. A screw connection is able to better compensate for such tolerances, since it can be varied in its clamping length as a fastening means due to the thread. The increase in economy in assembly must therefore be paid for with a reduction in economy in the manufacture of the proposed intake manifold. There is therefore only an insignificant advantage in the overall calculation.
Aufgabe der Erfindung ist es daher ein Saugmodul für eine Brennkraftmaschine zu schaffen, welches eine hohe Wirtschaftlichkeit sowohl in der Fertigung wie auch in der Montage bei beengten Platzverhältnissen erreicht. Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. Vorteile der ErfindungThe object of the invention is therefore to provide a suction module for an internal combustion engine which achieves a high level of economy both in manufacture and in assembly in a confined space. This object is solved by the features of claim 1. Advantages of the invention
Das erfindungsgemäße Saugmodul besteht im wesentlichen aus mindestens zwei Hauptkomponenten. Die eine ist das Saugrohr, welches in bekannter Weise aufgebaut ist, das heißt einen Einlaß für die Verbrennungsluft und einen Auslaß pro Zylinder der Brennkraftmaschine aufweist. Es können natürlich auch mehrere Auslässe pro Zylinder der Brennkraftmaschine vorgesehen sein. Die Auslässe sind zur Verbindung mit dem Zylinderkopf der Brennkraftmaschine vorgesehen. Die andere Komponente kann eine weitere beliebige Funktionskomponente sein, die aus meist wirtschaftlichen Erwägungen in das Saugmodul integriert ist. Gleichzeitig kann durch die Integration Einbauraum gespart werden.The suction module according to the invention essentially consists of at least two main components. One is the intake manifold, which is constructed in a known manner, that is to say has an inlet for the combustion air and an outlet per cylinder of the internal combustion engine. Of course, several outlets per cylinder of the internal combustion engine can also be provided. The outlets are provided for connection to the cylinder head of the internal combustion engine. The other component can be any other functional component that is integrated into the suction module for mostly economic reasons. At the same time, installation space can be saved through the integration.
Das erfindungsgemäße Saugmodul ist dadurch gekennzeichnet, daß die Verbindung zwischen Zyiinderkopf und den jeweiligen Auslässen des Saugrohrs als abgedichtete Steckverbindung ausgeführt ist. im Vergleich zu bekannten Lösungen trägt diese Steckverbindung nicht zur vollständigen Lagefixierung des Saugmoduls bei. Es ist vielmehr eine weitere Vorrichtung zur festen Montage des Saugmoduls an der Brennkraftmaschine notwendig. Diese ist in die weitere Funktionskomponente integriert, so daß das Saugmodul im Bereich des Zylinderkopfes einfach durch Einstecken montiert werden kann. Weitere Befestigungsmittel wie Schrauben oder Klammern, die in diesem Bereich beengter Platzverhältnisse normalerweise noch montiert werden müssen, können bei der erfindungsgemäßen Lösung des Saugmoduls entfallen. Die weitere Funktionskomponente liegt in einem Bereich, der für die Befestigungsmittel leichter zugänglich ist, so daß der Montageprozess des Saugmoduls an der Brennkraftmaschine hinsichtlich des Montagevorgangs optimiert werden kann.The suction module according to the invention is characterized in that the connection between the cylinder head and the respective outlets of the suction pipe is designed as a sealed plug connection. in comparison to known solutions, this plug connection does not contribute to the complete position fixation of the suction module. Rather, a further device for the fixed mounting of the suction module on the internal combustion engine is necessary. This is integrated into the other functional components, so that the suction module can be installed in the area of the cylinder head simply by plugging it in. Further fastening means such as screws or clamps, which normally still have to be installed in this area of restricted space, can be omitted in the solution of the suction module according to the invention. The further functional component lies in an area that is more easily accessible for the fastening means, so that the assembly process of the suction module on the internal combustion engine can be optimized with regard to the assembly process.
Die Optimierung des Montageprozesses besteht zunächst in einer Verlagerung der Montagemittel an die Funktionskomponente. Durch die Integration der Funktionskomponente in das Saugmodul wird aber zusätzlich der Montageaufwand gespart, die Funktionskomponente zusätzlich im Motorraum befestigen zu müssen. Auch hierdurch wird die Montage optimiert. Dabei kann das integrierte Bauteil selbst an das Saugrohr montiert sein. In diesem Fall wird nur der Endmontageaufwand im Motorraum eingespart. Eine günstigere Alternative ergibt sich dadurch, daß die integ- herte Funktionskomponente einteilig mit dem Saugrohr hergestellt ist. In diesem Fall wird eine Vormontage eingespart.The optimization of the assembly process initially consists of relocating the assembly equipment to the functional component. The integration of the functional component in the suction module also saves the assembly effort of having to additionally fasten the functional component in the engine compartment. This also optimizes assembly. The integrated component itself can be mounted on the intake manifold. In this case, only the final assembly effort in the engine compartment is saved. A cheaper alternative results from the fact that the herte functional component is made in one piece with the intake manifold. In this case, a pre-assembly is saved.
Das in die Steckverbindung zum Zylinderkopf montierte Saugrohr wird im allgemeinen einen axialen Freiheitsgrad im Bezug auf die Steckrichtung aufweisen. Dieser kann einseitig durch einen Anschlag des eingesteckten Saugrohres im Zylinderkopf begrenzt sein. Zumindest die Auszugrichtung des Saugrohres aus dem Zylinderkopf muß durch die Montage der zusätzlichen Funktionskomponente an der Brennkraftmaschine verhindert werden. Auf diese Weise entsteht die bereits beschriebene vollständige Lagefixierung des Saugmoduls.The intake manifold mounted in the plug connection to the cylinder head will generally have an axial degree of freedom with respect to the plug direction. This can be limited on one side by a stop of the inserted intake manifold in the cylinder head. At least the direction of extraction of the intake manifold from the cylinder head must be prevented by mounting the additional functional component on the internal combustion engine. In this way, the complete position fixation of the suction module described above is created.
Eine weitere Ausgestaltung der Erfindung sieht vor, daß es sich bei der Funktionskomponente um eine Zylinderkopfhaube handelt. Derartige Zylinderkopfhauben sind grundsätzlich bekannt und zur Montage auf der Brennkraftmaschine vorgesehen. Dies kann durch eine flanschartige Schraubverbindung geschehen, wobei diese gleichzeitig zu einer Abdichtung der Zylinderkopfhaube zum Zylinderkopf hin führt. Hierdurch wird eine feste Verbindung erreicht, die eine vollständige Lagefixierung des Saugmoduls ohne weiteres gewährleisten kann. Die Zylinderkopfhaube eignet sich als Funktionskomponente in besonderem Maße, weil diese in einem sinnvollen geometrischen Zusammenhang mit den Lufteinzügen zum Zylinder steht. Die Zylinderkopfhaube ist daher meistens dem Saugrohr benachbart, so daß insbesondere eine einteilige Herstellung sinnvoll ist. Beide Teile können aus Kunststoff gefertigt werden, wodurch ein leichtes Integralbauteil entsteht.Another embodiment of the invention provides that the functional component is a cylinder head cover. Such cylinder head covers are known in principle and are intended for mounting on the internal combustion engine. This can be done by means of a flange-like screw connection, which at the same time leads to a seal between the cylinder head cover and the cylinder head. In this way, a firm connection is achieved, which can ensure a complete position fixation of the suction module without further ado. The cylinder head cover is particularly suitable as a functional component because it has a meaningful geometric connection with the air intake to the cylinder. The cylinder head cover is therefore usually adjacent to the intake manifold, so that a one-piece production is particularly useful. Both parts can be made of plastic, which creates a lightweight integral component.
Es ist vorteilhaft, die weitere Funktionskomponente durch Schraubverbindungen an der Brennkraftmaschine zu befestigen. Dies ist im Sonderfall, das die Funktionskomponente eine Zylinderkopfhaube bereits beschrieben worden. Schraubverbindungen ermöglichen in vorteilhafter Weise die Überbrückung von Axialtoleranzen der Verbindung und die gleichzeitige Abdichtung von Flanschverbindungen. Dabei sind die Schrauben als Normteile kostengünstig zu beschaffen.It is advantageous to fasten the further functional component to the internal combustion engine by means of screw connections. This is in the special case that the functional component of a cylinder head cover has already been described. Screw connections advantageously enable the bridging of axial tolerances of the connection and the simultaneous sealing of flange connections. The screws are inexpensive to procure as standard parts.
Die Abdichtung in der Steckverbindung zwischen Saugrohr und Zylinderkopf kann gemäß einer besonderen Ausgestaltung der Erfindung durch einen O-Ring gewährleistet werden. Auch diese sind als Normteil kostengünstig zu beschaffen und einfach auf einem der Verbindungspartner, insbesondere dem Saugrohr zu befestigen. Hierdurch wird die Montage erleichtert, da das Dichtmittel entsprechend vormontiert werden kann.According to a special embodiment of the invention, the seal in the plug connection between the intake manifold and the cylinder head can be ensured by an O-ring. These are also inexpensive to obtain as a standard part and are simple to be attached to one of the connection partners, in particular the intake manifold. This makes assembly easier because the sealant can be preassembled accordingly.
Besonders vorteilhaft ist die Verwendung eines O-Rings, wenn diese mit einer im Vergleich zum Durchmesser großen Querschnittsfläche gewählt werden. Insbesondere ist diese Bedingung gegeben, wenn das Verhältnis d/D zwischen Außendurchmesser D des O-Rings und Durchmesser d der Querschnittsfläche mehr als 0,15 beträgt. Der O-Ring vermag bei diesen Abmessungen Toleranzen wie Unrundheit der Verbindungspartner oder Toleranzen bei den Abständen der einzelnen Auslässe auszugleichen, wodurch einer zuverlässigere Verbindung hergestellt werden kann. Gleichzeitig sinken die Toleranzanforderungen an die Herstellung der Bauteile, was die erfindungsgemäße Lösung wirtschaftlicher in der Herstellung macht.The use of an O-ring is particularly advantageous if these are selected with a cross-sectional area that is large compared to the diameter. In particular, this condition is met if the ratio d / D between the outer diameter D of the O-ring and the diameter d of the cross-sectional area is more than 0.15. With these dimensions, the O-ring can compensate for tolerances such as out-of-roundness of the connection partners or tolerances for the distances between the individual outlets, which means that a more reliable connection can be made. At the same time, the tolerance requirements for the manufacture of the components decrease, which makes the solution according to the invention more economical to manufacture.
Eine weitere Variante der Abdichtung der Steckverbindung kann durch Verwendung von Profildichtungen erreicht werden. Diese können aufgrund ihrer Gestaltung große Toleranzbereiche abdecken, wie sie in der bereits beschriebenen Weise auftreten. Die Profildichtung kann z. B. einen V-förmigen Querschnitt aufweisen, wodurch zwei Lippen entstehen, wobei die eine sich am Auslaß des Saurohres und die andere am Zylinderkopf abstützt. Die Spitze des V ist dabei vorteilhafterweise zum abzudichtenden Innenraum ausgerichtet, da hier ein Unterdruck entsteht. Damit werden die Lippen zu Erhöhung der Dichtung an die kommunizierenden Dichtflächen gedrückt.Another variant of sealing the plug connection can be achieved by using profile seals. Due to their design, these can cover large tolerance ranges as they occur in the manner already described. The profile seal can e.g. B. have a V-shaped cross section, whereby two lips are formed, one of which is supported at the outlet of the suction pipe and the other on the cylinder head. The tip of the V is advantageously aligned with the interior to be sealed, since this creates a negative pressure. The lips are pressed against the communicating sealing surfaces to increase the seal.
Gemäß einer Modifikation der Erfindung ist das Saugrohr und die Funktionskomponente einteilig hergestellt, wobei der Abstand dieser beiden Bauteile durch Verbindungsrippen überbrückt wird. Die Verbindungsrippen führen zu einem minimalen Materialaufwand bei der einteiligen Herstellung von Saugrohr und Funktionskomponente. Außerdem können sie die Übertragung von Schwingungen im Saugrohr, die auf die Druckpulsation der Ansaugluft zurückzuführen sind, vermindern. Dies trägt zu einer Verbesserung des akustischen Verhaltens des Saugrohres bei und vermindert die mechanische Beanspruchung der Funktionskomponente.According to a modification of the invention, the intake manifold and the functional component are made in one piece, the distance between these two components being bridged by connecting ribs. The connecting ribs result in a minimal amount of material in the one-piece production of the intake manifold and functional component. They can also reduce the transmission of vibrations in the intake manifold, which are due to the pressure pulsation of the intake air. This contributes to an improvement in the acoustic behavior of the intake manifold and reduces the mechanical stress on the functional component.
Einen zusätzlichen Effekt der Schwingungsisolation erreicht man selbstverständlich durch die bereits beschriebene Gestaltung der Dichtungen. Diese ermöglichen die Überbrückung eines Spaltes zwischen Saugrohr und Zylinderkopf im Bereich der Auslässe, so daß die schwingungsdämpfenden Eigenschaften des dichtenden Materials genutzt werden können.An additional effect of vibration isolation is of course achieved through the design of the seals already described. These enable the Bridging a gap between the intake manifold and cylinder head in the area of the outlets, so that the vibration-damping properties of the sealing material can be used.
Diese und weitere Merkmale von bevorzugten Weiterbildungen der Erfindung gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei der Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein und vorteilhafte sowie für sich schutzfähige Ausführungen darstellen können, für die hier Schutz beansprucht wird.These and further features of preferred developments of the invention are evident from the claims and also from the description and the drawings, the individual features being implemented individually or in groups in the form of subcombinations in the embodiment of the invention and in other fields, and can represent advantageous and protectable versions for which protection is claimed here.
Zeichnungendrawings
Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung erläutert. Hierbei zeigenAn embodiment of the invention is explained below with reference to the drawing. Show here
Figur 1 die teilweise aufgeschnitten dargestellte Aufsicht auf ein Saugrohr, in das als Funktionskomponente eine Zylinderkopfhaube integriert ist undFigure 1 shows the partially cut view of an intake manifold, in which a cylinder head cover is integrated as a functional component and
Figur 2 den Schnitt A-A gemäß Figur 1.FIG. 2 shows the section A-A according to FIG. 1.
Beschreibung der AusführungsbeispieleDescription of the embodiments
Ein Saugmodul 10 gemäß Figur 1 weist als Komponenten im wesentlichen ein Saugrohr 1 1 und eine Zylinderkopfhaube 12 auf, die durch Verbindungsrippen 13 miteinander verbunden sind. Der Teil des Saugrohrs 11 besitzt einen Einlaß 14 für die Verbrennungsluft und Auslässe 15, von denen einer im aufgeschnitten Teil des Saugrohres erkennbar ist.A suction module 10 according to FIG. 1 essentially has as components a suction pipe 11 and a cylinder head cover 12, which are connected to one another by connecting ribs 13. The part of the suction pipe 11 has an inlet 14 for the combustion air and outlets 15, one of which can be seen in the cut-open part of the suction pipe.
Die Zylinderkopfhaube 12, in die ein Öleinfüllstutzen 16 und ein Ölnebelabscheider 17 für Kurbelgehäusegase integriert ist, weist mehrere Aufnahmelöcher 18 auf. Diese dienen zur Aufnahme nicht dargestellter Schrauben, wobei mit deren Hilfe die Zylinderkopfhaube fest mit dem nicht dargestellten Zylinderkopf verbunden werden kann.The cylinder head cover 12, into which an oil filler neck 16 and an oil mist separator 17 for crankcase gases are integrated, has a plurality of receiving holes 18. This are used to hold screws, not shown, with the help of which the cylinder head cover can be firmly connected to the cylinder head, not shown.
Im Detail geht die Verbindung zwischen Zylinderkopf 19 und Saugmodul 10 aus Figur 2 hervor. Mit Hilfe von Schrauben 20 ist die Zylinderkopfhaube 12 über die Aufnahmelöcher 18 fixiert. Im Bereich des Saugrohres 11 wird eine Steckverbindung 21 hergestellt, die die Auslässe 15 mit Ansaugkanälen 22 verbindet. Dabei sind die Ansaugkanäle als Stutzen 23 im Zylinderkopf 19 ausgeführt. Eine Abdichtung der Steckverbindung 21 kommt durch O-Ringe 24 zustande. Diese sorgen gleichzeitig für einen Toleranzausgieich, da die Stutzen 23 einen geringeren Außendurchmesser aufweisen, als der Innendurchmesser der Auslässe 15. Neben dem Toleranzausgleich wird hierdurch eine mechanische Schwingungsisolation erreicht.The connection between the cylinder head 19 and the suction module 10 is shown in detail in FIG. With the help of screws 20, the cylinder head cover 12 is fixed via the receiving holes 18. In the area of the suction pipe 11, a plug connection 21 is produced, which connects the outlets 15 to suction channels 22. The intake ducts are designed as connecting pieces 23 in the cylinder head 19. The plug connection 21 is sealed by O-rings 24. At the same time, these ensure tolerance compensation, since the connecting pieces 23 have a smaller outside diameter than the inside diameter of the outlets 15. In addition to the tolerance compensation, mechanical vibration isolation is thereby achieved.
Das Saugmodul ist vorteilhafter Weise aus Kunststoff gefertigt. The suction module is advantageously made of plastic.

Claims

Patentansprüche claims
1. Saugmodul für eine Brennkraftmaschine,1. suction module for an internal combustion engine,
- welches ein Saugrohr (11 ) mit einem Einlaß (14) für die Verbrennungsluft und einem Auslaß (15) pro Zylinder der Brennkraftmaschine aufweist, wobei der jeweilige Auslaß zur Verbindung mit einem Zylinderkopf (19) der Brennkraftmaschine vorgesehen ist, und- Which has a suction pipe (11) with an inlet (14) for the combustion air and an outlet (15) per cylinder of the internal combustion engine, the respective outlet being provided for connection to a cylinder head (19) of the internal combustion engine, and
- in welches mindestens eine weitere Funktionskomponente (12, 16, 17) für die Brennkraftmaschine integriert ist, dadurch gekennzeichnet, dass die Verbindung zwischen Zylinderkopf (19) und dem jeweiligen Auslaß (15) als abgedichtete Steckverbindung (21 ) ausgeführt ist und dass die weitere Funktionskomponente (12, 16, 17) an der Brennkraftmaschine montiert ist, wobei eine vollständige Lagefixierung des Saugmoduls an der Brennkraftmaschine durch die Funktionskomponente erzielt wird.- In which at least one further functional component (12, 16, 17) is integrated for the internal combustion engine, characterized in that the connection between the cylinder head (19) and the respective outlet (15) is designed as a sealed plug connection (21) and that the further Functional component (12, 16, 17) is mounted on the internal combustion engine, the position of the suction module on the internal combustion engine being completely fixed by the functional component.
2. Saugmodul nach Anspruch 1 , dadurch gekennzeichnet, dass die weitere Funktionskomponente aus einer Zylinderkopfhaube (12) für die Brennkraftmaschine besteht.2. Suction module according to claim 1, characterized in that the further functional component consists of a cylinder head cover (12) for the internal combustion engine.
3. Saugmodul nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die weitere Funktionskomponente durch Schrauben (20) an der Brennkraftmaschine befestigt ist.3. Suction module according to one of the preceding claims, characterized in that the further functional component is fastened to the internal combustion engine by means of screws (20).
4. Saugmodul nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass zur Abdichtung der Steckverbindung (21 ) ein radial dichtender O-Ring (24) vorgesehen ist.4. Suction module according to one of the preceding claims, characterized in that a radially sealing O-ring (24) is provided for sealing the plug connection (21).
5. Saugmodul nach Anspruch 4, dadurch gekennzeichnet, dass der O-Ring (24) ein Verhältnis d/D zwischen Außenduchmesser D des O-Rings und Querschnittsdurchmesser d des O-Rings von mehr als 0,15 aufweist. 5. Suction module according to claim 4, characterized in that the O-ring (24) has a ratio d / D between the outer diameter D of the O-ring and the cross-sectional diameter d of the O-ring of more than 0.15.
6. Saugmodul nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zur Abdichtung der Steckverbindung (21 ) eine Profildichtung vorgesehen ist.6. Suction module according to one of claims 1 to 3, characterized in that a profile seal is provided for sealing the plug connection (21).
7. Saugmodul nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Grundkörper der Funktionskomponente (12, 16, 17) und der Grundkörper der Saugrohres (11 ) einteilig hergestellt sind.7. Suction module according to one of the preceding claims, characterized in that the base body of the functional component (12, 16, 17) and the base body of the suction tube (11) are made in one piece.
8. Saugmodul nach Anspruch 7, dadurch gekennzeichnet, dass die Grundkörper von Funktionskomponente (12, 16, 17) und Saugrohr (11 ) über Verbindungsrippen (13) miteinander verbunden sind. 8. Suction module according to claim 7, characterized in that the base body of the functional component (12, 16, 17) and suction pipe (11) are connected to one another via connecting ribs (13).
PCT/EP2000/006499 1999-07-15 2000-07-08 Internal combustion engine induction module WO2001006110A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19933032 1999-07-15
DE19933032.8 1999-07-15
DE19960223.9 1999-12-14
DE19960223A DE19960223A1 (en) 1999-07-15 1999-12-14 Suction module for an internal combustion engine

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WO2001006110A1 true WO2001006110A1 (en) 2001-01-25

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06147039A (en) * 1992-10-30 1994-05-27 Suzuki Motor Corp Supporting structure of manifold
DE19636579A1 (en) * 1995-09-07 1997-03-27 Daihatsu Motor Co Ltd Air intake for multi-cylinder internal combustion engine
JPH09203358A (en) * 1996-01-25 1997-08-05 Asahi Tec Corp Fixedly supporting device to engine main body for synthetic-resin-made manifold
US5690068A (en) * 1995-12-21 1997-11-25 Mercedes-Benz Ag Arrangement for mounting an air intake module on an internal combustion engine
US5887560A (en) * 1997-07-31 1999-03-30 Suzuki Motor Corporation Support structure for intake system of internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06147039A (en) * 1992-10-30 1994-05-27 Suzuki Motor Corp Supporting structure of manifold
DE19636579A1 (en) * 1995-09-07 1997-03-27 Daihatsu Motor Co Ltd Air intake for multi-cylinder internal combustion engine
US5690068A (en) * 1995-12-21 1997-11-25 Mercedes-Benz Ag Arrangement for mounting an air intake module on an internal combustion engine
JPH09203358A (en) * 1996-01-25 1997-08-05 Asahi Tec Corp Fixedly supporting device to engine main body for synthetic-resin-made manifold
US5887560A (en) * 1997-07-31 1999-03-30 Suzuki Motor Corporation Support structure for intake system of internal combustion engine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 018, no. 465 (M - 1665) 30 August 1994 (1994-08-30) *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 12 25 December 1997 (1997-12-25) *

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