EP0874141B1 - Venting device for the pipe connected to the intake manifold of a combustion engine - Google Patents

Venting device for the pipe connected to the intake manifold of a combustion engine Download PDF

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Publication number
EP0874141B1
EP0874141B1 EP98106568A EP98106568A EP0874141B1 EP 0874141 B1 EP0874141 B1 EP 0874141B1 EP 98106568 A EP98106568 A EP 98106568A EP 98106568 A EP98106568 A EP 98106568A EP 0874141 B1 EP0874141 B1 EP 0874141B1
Authority
EP
European Patent Office
Prior art keywords
metal sleeve
throttle
breather
combustion engine
internal combustion
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
EP98106568A
Other languages
German (de)
French (fr)
Other versions
EP0874141A1 (en
Inventor
Jens Bieler
Peter Werner
Matthias Zentgraf
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.)
Daimler AG
Mannesmann VDO AG
Original Assignee
DaimlerChrysler AG
Mannesmann VDO AG
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 DaimlerChrysler AG, Mannesmann VDO AG filed Critical DaimlerChrysler AG
Publication of EP0874141A1 publication Critical patent/EP0874141A1/en
Application granted granted Critical
Publication of EP0874141B1 publication Critical patent/EP0874141B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
    • F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
    • F01M13/023—Control valves in suction conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/0011—Breather valves
    • F01M2013/0027—Breather valves with a de-icing or defrosting system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0455—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a de-icing or defrosting system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0472—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil using heating means
    • 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

  • the invention relates to a ventilation device in a ventilation pipe leading to a suction pipe arrangement of an internal combustion engine with a throttle acting as a flow restrictor, the suction pipe arrangement consisting of a plastic component with an inlet-side connecting piece for the ventilation pipe and an outlet, and also with a metal sleeve firmly inserted in a through hole of the plastic component with a fastening screw that firmly clamps the plastic part over the metal sleeve to the cylinder head of the internal combustion engine.
  • vent line extending from the crankcase of the multi-cylinder internal combustion engine is flanged to an intake manifold arrangement designed as a plastic component.
  • the throttle is located between the crankcase and the intake manifold arrangement in the area near the intake manifold as a flow-determining intermediate piece.
  • the invention is therefore based on the object of providing simple measures on a ventilation device of the generic type, by means of which functional impairments or even failures of the crankcase ventilation can be avoided even at extremely low outside temperatures.
  • An advantageous embodiment of the invention results from the fact that the throttle is integrated as a line intermediate piece in the metal sleeve. This enables a rapid rise in temperature or rapid heating during engine operation when the outside temperature is low and the engine is cold.
  • a four-cylinder internal combustion engine 1 with four intake pipes 2, 3, 4, 5 arranged in series has a ventilation line 7 leading to the intake pipe arrangement 6 and serving for crankcase ventilation, which connects between the adjacent and internal intake pipes 3, 4 on the intake pipe arrangement 6 designed as a plastic component is, namely on an inlet-side connecting piece 8 molded onto the plastic component.
  • the plastic component contains a step-shaped elongated through hole 9, which is crossed in its lower half by the ventilation line 7.
  • the inlet connection 8 of the ventilation line 7, which opens radially into the through hole 9, and an outlet formed by a radial bore 10 are offset in height from one another, the connection 8 being arranged higher than the radial bore 10 on the outlet side.
  • a metal sleeve 11 acting as a spacer, which extends over the entire length of the Through hole 9 extends.
  • This metal sleeve 11 has a throttle 12 at the level of the connecting piece 8, which is located at the geodetically highest point of the crankcase ventilation and extends as a radial bore in extension to the connecting piece 8 and connects the connecting piece 8 to an annular space 13, which of the inner wall 14 Metal sleeve 11 and a fastening screw 15 inserted in the metal sleeve 11 is formed.
  • the annular space 13 begins just above the throttle 12 at a point 13 a and ends at the lower end of the metal sleeve 11.

Description

Die Erfindung betrifft eine Entlüftungsvorrichtung in einer zu einer Saugrohranordnung einer Brennkraftmaschine hinführenden Entlüftungsleitung mit einer als Durchflußbegrenzer wirkenden Drossel, wobei die Saugrohranordnung aus einem Kunststoffbauteil mit einem eintrittsseitigen Anschlußstutzen für die Entlüftungsleitung und einem Austritt besteht, ferner mit einer in einer Durchgangsbohrung des Kunststoffbauteiles fest eingesetzten Metallhülse mit einer Befestigungsschraube, die das Kunststoffteil über die Metallhülse mit dem Zylinderkopf der Brennkraftmaschine fest verspannt.The invention relates to a ventilation device in a ventilation pipe leading to a suction pipe arrangement of an internal combustion engine with a throttle acting as a flow restrictor, the suction pipe arrangement consisting of a plastic component with an inlet-side connecting piece for the ventilation pipe and an outlet, and also with a metal sleeve firmly inserted in a through hole of the plastic component with a fastening screw that firmly clamps the plastic part over the metal sleeve to the cylinder head of the internal combustion engine.

Brennkraftmaschinen mit derartigen Entlüftungsvorrichtungen mit einer als Durchflußbegrenzer wirkenden Drossel sind aus der MTZ Motortechnische Zeitschrift 53 (1992) 10, Seite 438, Bild 14 bekannt.Internal combustion engines with such ventilation devices with a throttle acting as a flow restrictor are known from MTZ Motortechnische Zeitschrift 53 (1992) 10, page 438, Figure 14.

In diesen Fahrzeugen ist die vom Kurbelgehäuse der mehrzylindrigen Brennkraftmaschine ausgehende Entlüftungsleitung an einer als Kunststoffbauteil ausgebildeten Saugrohranordnung angeflanscht. In dem außenliegenden bzw. freiliegenden Teil der Entlüftungsleitung befindet sich zwischen Kurbelgehäuse und Saugrohranordnung im saugrohrnahen Bereich die Drossel als durchflußbestimmendes Zwischenstück.In these vehicles, the vent line extending from the crankcase of the multi-cylinder internal combustion engine is flanged to an intake manifold arrangement designed as a plastic component. In the outer or exposed part of the vent line, the throttle is located between the crankcase and the intake manifold arrangement in the area near the intake manifold as a flow-determining intermediate piece.

Bei Ausführungen dieser Art traten bei niedrigen Außentemperaturen Funktionsstörungen auf, die eine einwandfreie Kurbelgehäuseentlüftung nicht mehr sicherstellten.In the case of versions of this type, malfunctions occurred at low outside temperatures, which no longer ensured perfect crankcase ventilation.

Der Erfindung liegt daher die Aufgabe zugrunde, an einer Entlüftungsvorrichtung der gattungsgemäßen Art einfache Maßnahmen vorzusehen, durch die auch bei extrem niedrigen Außentemperaturen Funktionsbeeinträchtigungen oder gar Ausfälle der Kurbelgehäuseentlüftung vermieden werden.The invention is therefore based on the object of providing simple measures on a ventilation device of the generic type, by means of which functional impairments or even failures of the crankcase ventilation can be avoided even at extremely low outside temperatures.

Zur Lösung der Aufgabe dienen die im kennzeichnenden Teil des Patentanspruchs 1 angegebenen Merkmale.To solve the problem serve the features specified in the characterizing part of claim 1.

In den Unteransprüchen sind noch förderliche Weiterbildungen der Erfindung angegeben.Further advantageous developments of the invention are specified in the subclaims.

Durch die Schaffung einer thermisch leitenden Verbindung mit motorbetriebswarmen Bauteilen, nämlich über eine mit dem Zylinderkopf in Kontakt stehende Metallhülse zur Wärmeeinleitung in die Drossel, wird auf einfachste Weise ein Einfrieren der als Durchflußbegrenzer wirkenden Drossel verhindert. Zusätzliche Bauteile sind somit nicht erforderlich, vielmehr wird eine an sich bekannte und seither lediglich als Abstandshalter wirkende Metallhülse als Wärmeleiter genutzt, um den drosselnden Abschnitt der Entlüftungsleitung gegen tiefe Außentemperaturen unempfindlich zu machen.By creating a thermally conductive connection with engine-warm components, namely via a metal sleeve in contact with the cylinder head for heat introduction into the throttle, freezing of the throttle acting as a flow restrictor is prevented in the simplest way. Additional components are therefore not required, rather a metal sleeve which is known per se and since then has only acted as a spacer is used as a heat conductor in order to make the throttling section of the ventilation line insensitive to low outside temperatures.

Eine vorteilhafte Ausgestaltung der Erfindung ergibt sich dadurch, daß die Drossel als Leitungszwischenstück in die Metallhülse integriert ist. Somit wird bei tiefen Außentemperaturen und kaltem Motor ein schneller Temperaturanstieg bzw. eine rasche Aufheizung im Motorbetrieb ermöglicht.An advantageous embodiment of the invention results from the fact that the throttle is integrated as a line intermediate piece in the metal sleeve. This enables a rapid rise in temperature or rapid heating during engine operation when the outside temperature is low and the engine is cold.

Der Gegenstand der Erfindung ist in der Zeichnung dargestellt und wird anhand eines Ausführungsbeispieles im folgenden näher erläutert. Es zeigen

Fig. 1
eine in einer Saugrohranordnung untergebrachte Entlüftungsvorrichtung einer mit freiliegenden Entlüftungsleitungen versehenen vierzylindrigen Brennkraftmaschine und
Fig. 2
die Anordnung einer Drossel in einer mit dem Zylinderkopf in Kontakt stehenden Metallhülse in vergrößerter Darstellung.
The object of the invention is illustrated in the drawing and is explained in more detail below using an exemplary embodiment. Show it
Fig. 1
a ventilation device accommodated in an intake manifold arrangement of a four-cylinder internal combustion engine provided with exposed ventilation lines and
Fig. 2
the arrangement of a throttle in a metal sleeve in contact with the cylinder head in an enlarged view.

Eine vierzylindrige Brennkraftmaschine 1 mit vier in Reihe angeordneten Saugrohren 2,3,4,5 weist eine zu der Saugrohranordnung 6 hinführende und zur Kurbelgehäuseentlüftung dienende Entlüftungsleitung 7 auf, die zwischen den benachbarten und innenliegenden Saugrohren 3,4 an der als Kunststoffbauteil ausgebildeten Saugrohranordnung 6 befestigt ist, und zwar an einem an dem Kunststoffbauteil angeformten eintrittsseitigen Anschlußstutzen 8.A four-cylinder internal combustion engine 1 with four intake pipes 2, 3, 4, 5 arranged in series has a ventilation line 7 leading to the intake pipe arrangement 6 and serving for crankcase ventilation, which connects between the adjacent and internal intake pipes 3, 4 on the intake pipe arrangement 6 designed as a plastic component is, namely on an inlet-side connecting piece 8 molded onto the plastic component.

Das Kunststoffbauteil enthält eine stufig ausgebildete langgestreckte Durchgangsbohrung 9, die in ihrer unteren Hälfte von der Entlüftungsleitung 7 durchkreuzt wird. Der eintrittsseitige Anschlußstutzen 8 der Entlüftungsleitung 7, der radial in die Durchgangsbohrung 9 einmündet, und ein durch eine Radialbohrung 10 gebildeter Austritt liegen höhenversetzt zueinander, wobei der Anschlußstutzen 8 gegenüber der austrittsseitigen Radialbohrung 10 höher angeordnet ist.The plastic component contains a step-shaped elongated through hole 9, which is crossed in its lower half by the ventilation line 7. The inlet connection 8 of the ventilation line 7, which opens radially into the through hole 9, and an outlet formed by a radial bore 10 are offset in height from one another, the connection 8 being arranged higher than the radial bore 10 on the outlet side.

In der Durchgangsbohrung 9 steckt eine als Abstandshalter wirkende Metallhülse 11, die sich über die gesamte Länge der Durchgangsbohrung 9 erstreckt. Diese Metallhülse 11 weist in Höhe des Anschlußstutzens 8 eine Drossel 12 auf, die am geodätisch höchsten Punkt der Kurbelgehäuseentlüftung liegt und als Radialbohrung in Verlängerung zum Anschlußstutzen 8 verläuft und eine Verbindung von dem Anschlußstutzen 8 zu einem Ringzwischenraum 13 herstellt, der von der Innenwandung 14 der Metallhülse 11 und einer in der Metallhülse 11 steckenden Befestigungsschraube 15 gebildet ist. Der Ringzwischenraum 13 beginnt kurz oberhalb der Drossel 12 an einer Stelle 13a und endet am unteren Ende der Metallhülse 11.In the through hole 9 is a metal sleeve 11 acting as a spacer, which extends over the entire length of the Through hole 9 extends. This metal sleeve 11 has a throttle 12 at the level of the connecting piece 8, which is located at the geodetically highest point of the crankcase ventilation and extends as a radial bore in extension to the connecting piece 8 and connects the connecting piece 8 to an annular space 13, which of the inner wall 14 Metal sleeve 11 and a fastening screw 15 inserted in the metal sleeve 11 is formed. The annular space 13 begins just above the throttle 12 at a point 13 a and ends at the lower end of the metal sleeve 11.

Zwischen dem Ringzwischenraum 13 und der austrittsseitigen Radialbohrung 10 verläuft eine durchmessermäßig große Radialbohrung 16 in der Metallhülse 11, die in ein Sammelrohr 17 mündet, welches sich über sämtliche Saugrohre 2 bis 5 erstreckt (nicht dargestellt).Between the annular space 13 and the radial bore 10 on the outlet side there is a radial bore 16 of large diameter in the metal sleeve 11, which opens into a collecting tube 17 which extends over all suction tubes 2 to 5 (not shown).

Die aus Kunststoff bestehende Saugrohranordnung 6 ist durch die Befestigungsschraube 15 mit dem Zylinderkopf 18 der Brennkraftmaschine fest verspannt.The intake manifold arrangement 6, which is made of plastic, is firmly clamped to the cylinder head 18 of the internal combustion engine by the fastening screw 15.

Claims (4)

  1. Breather system in a breather line (7) leading to an intake pipe system (6) of an internal combustion engine (1) having a throttle (12) acting as a flow limiter, the intake pipe system (6) consisting of a plastics component with an inlet-side connecting socket (8) for the breather line (7) and an outlet, additionally having a metal sleeve (11) fixedly inserted in a bore (9) of the plastics component with a fixing screw (15), which fixedly secures the plastics component to the cylinder head (18) of the internal combustion engine (1) via the metal sleeve (11),
    characterised in that
    the throttle (12) is integrated as part of the breather line (7) in the region of the heat-conducting metal sleeve (11).
  2. Breather system as claimed in claim 1,
    characterised in that
    the breather line (7) intersects the bore (9) and the metal sleeve (11), the throttle (12) being integrated in the metal sleeve (11).
  3. Breather system as claimed in claims 1 or 2,
    characterised in that
    the throttle (12) running in the metal sleeve (11) extending the inlet-side connecting socket (8) opens into an annular intermediate chamber (13) formed by the metal sleeve (11) and the fixing screw (15), and an outlet-side radial bore (10) in the intake pipe system (6) is connected to the annular intermediate chamber (13) via a large-diameter radial bore (16) in the metal sleeve (11).
  4. Breather system as claimed in claim 1, for a four- or multi-cylinder internal combustion engine having a number of intake pipes corresponding to the number of cylinders,
    characterised in that
    the inlet-side connecting socket (8) is disposed, as is the throttle (12), between two adjacent and centrally lying intake pipes (3, 4), the throttle (12) lying at the geodesically highest point of the crankcase breather system.
EP98106568A 1997-04-23 1998-04-09 Venting device for the pipe connected to the intake manifold of a combustion engine Expired - Lifetime EP0874141B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19717040A DE19717040C1 (en) 1997-04-23 1997-04-23 Venting device in a vent line leading to an intake manifold arrangement of an internal combustion engine
DE19717040 1997-04-23

Publications (2)

Publication Number Publication Date
EP0874141A1 EP0874141A1 (en) 1998-10-28
EP0874141B1 true EP0874141B1 (en) 2002-02-27

Family

ID=7827436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98106568A Expired - Lifetime EP0874141B1 (en) 1997-04-23 1998-04-09 Venting device for the pipe connected to the intake manifold of a combustion engine

Country Status (3)

Country Link
US (1) US5944000A (en)
EP (1) EP0874141B1 (en)
DE (2) DE19717040C1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20014711U1 (en) 2000-08-25 2000-11-23 Mann & Hummel Filter Device for recirculating gas on an internal combustion engine
DE10136463B4 (en) * 2001-07-26 2010-04-15 Man Nutzfahrzeuge Ag crankcase ventilation
DE102004020102A1 (en) * 2004-04-24 2005-11-24 Mann + Hummel Gmbh Suction tube arrangement for an internal combustion engine
DE102004031499B4 (en) * 2004-06-30 2009-08-13 Daimler Ag Crankcase vent line
DE102010005828A1 (en) * 2010-01-27 2011-07-28 GM Global Technology Operations LLC, ( n. d. Ges. d. Staates Delaware ), Mich. Air intake device for sucking in ambient air for internal combustion engine of motor vehicle, is provided with turbocharger, where turbocharger is connected to air inlet pipe

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1525882A (en) * 1924-07-14 1925-02-10 Joseph I Padgett Engine attachment
GB1258511A (en) * 1968-07-17 1971-12-30
US4024846A (en) * 1974-11-01 1977-05-24 The Ferry Cap & Set Screw Company Valve device and system employing the same
JPS6010813U (en) * 1983-06-30 1985-01-25 株式会社クボタ Combustion chamber reduction device for engine blow-by gas
US4768493A (en) * 1984-04-27 1988-09-06 Honda Giken Kogyo Kabushiki Kaisha Blow-by gas heating system for internal combustion engines
DE3625376C1 (en) * 1986-07-26 1987-10-29 Porsche Ag Crankcase ventilation for motor vehicles
DE3824791A1 (en) * 1988-07-21 1990-01-25 Porsche Ag CRANKCASE VENTILATION
DE19525542A1 (en) * 1995-07-13 1997-01-16 Mann & Hummel Filter Heating device
JP3537554B2 (en) * 1995-08-30 2004-06-14 ヤマハマリン株式会社 Outboard motor blow-by gas reduction system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MTZ Motortechnische Zeitschrift 53 (1992) 10 *

Also Published As

Publication number Publication date
EP0874141A1 (en) 1998-10-28
DE59803163D1 (en) 2002-04-04
DE19717040C1 (en) 1998-11-26
US5944000A (en) 1999-08-31

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