EP0566826B1 - Valve cover for an internal combustion engine - Google Patents

Valve cover for an internal combustion engine Download PDF

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Publication number
EP0566826B1
EP0566826B1 EP93101358A EP93101358A EP0566826B1 EP 0566826 B1 EP0566826 B1 EP 0566826B1 EP 93101358 A EP93101358 A EP 93101358A EP 93101358 A EP93101358 A EP 93101358A EP 0566826 B1 EP0566826 B1 EP 0566826B1
Authority
EP
European Patent Office
Prior art keywords
valve
connection
aperture
crankcase
pressure control
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
EP93101358A
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German (de)
French (fr)
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EP0566826A1 (en
Inventor
Schnabel Werner
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
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Publication date
Application filed by Filterwerk Mann and Hummel GmbH filed Critical Filterwerk Mann and Hummel GmbH
Publication of EP0566826A1 publication Critical patent/EP0566826A1/en
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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
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/04—Filling or draining lubricant of or from machines or engines
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings
    • 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
    • F01M13/0416—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in valve-covers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7835—Valve seating in direction of flow
    • Y10T137/7836—Flexible diaphragm or bellows reactor

Definitions

  • the invention relates to a valve cover for an internal combustion engine according to the preamble of the main claim.
  • These valve covers are usually provided with an oil filler opening, which is closed with a lid.
  • crankcase ventilation It is generally known to arrange pressure regulating valves for crankcase ventilation, for example in the ventilation line between the crankcase and the intake air filter or engine intake manifold. Because of these pressure control valves, there is a closed connection between the crankcase and the intake side of the engine, through which the blow-by gases are drawn off and fed back into the combustion process.
  • the pressure control valve ensures that the vacuum in the crankcase does not fall below a certain level. A constantly prevailing small vacuum in the crankcase prevents blow-by gases from escaping outdoors. By regulating the crankcase pressure, an optimal protection of the closed engine system is guaranteed, so that no pollutants can get outside.
  • Such a pressure control valve is usually on the engine flanged on the side and connected to the crankcase as well as the intake manifold or air filter with appropriate connecting lines.
  • Such valves are known for example from the publication of the company FILTERWERK MANN + HUMMEL GMBH No. VKD 7032.
  • the pressure control valve is usually attached to the motor housing with a connecting flange or a steel bracket.
  • US-A-3 990 489 discloses a valve cover according to the preamble of claim 1; With this arrangement, however, the operation of the cover is made more difficult by the connecting line.
  • the invention is therefore based on the object of avoiding the disadvantages mentioned and of creating a valve cover which contributes to the better design of the engine and is also structurally simple.
  • the main advantage of the solution according to claim 1 is the fact that the pressure control valve is now integrated in the cover of the oil filler neck and thus also takes over the function of the cover.
  • a pressure control valve is known from DE 40 17 074, which is arranged in a combinatorial unit with an oil filler neck and an oil dipstick. However, this pressure control valve is still connected to the intake manifold or the air supply to the engine. An exchange or a check cannot therefore be carried out easily.
  • connection for forwarding the crankcase gases is arranged coaxially in the oil filler neck.
  • the cover which receives the pressure control valve, is attached to this connection, for example by means of a bayonet lock, and thus establishes the connection for the crankcase gas.
  • connection for forwarding the crankcase gases in the oil filler neck has an annular opening.
  • the pressure regulating valve is provided with a tubular extension which has bores in the area of the ring opening which, when the cover is closed, produce the connection for the crankcase gases.
  • a further embodiment of the invention provides for the connection provided in the oil filler neck or the tubular extension of the pressure control valve to be designed as a valve seat on its front edge.
  • a diaphragm valve body is arranged opposite the valve seat, which causes the valve to close or open depending on the pressure conditions.
  • a further development of the invention is particularly advantageous where the blow-by gases have to be conducted directly into the intake manifold of the engine.
  • the blow-by gases have to be conducted directly into the intake manifold of the engine.
  • a double-acting valve is used, which is described for example in DE-OS 40 22 129.
  • This valve has the advantage that two valve systems for different pressure conditions are combined in one housing, only one membrane being required for both valve systems. Nevertheless, a simple, assembly-friendly construction of the entire pressure control valve is achieved.
  • the parts of the pressure control valve are made, for example, from plastic injection molding. This makes it possible to manufacture such valves inexpensively and in large quantities. Only the diaphragm valve body is made of a rubber material.
  • Fig. 1 shows schematically an oil fill opening 33, on which the housing 34 of the pressure control valve 35 is arranged via a bayonet lock 36.
  • a bent pipe 37 leads to the outside.
  • a hose can be attached, which is connected to the air supply to the internal combustion engine, that is, the intake manifold or the air filter housing.
  • the pressure control valve 35 consists of a cover part 38, a lower part 39, an O-ring 40 and a diaphragm valve body 41
  • the diaphragm valve body is held in an open position by a spring 42. In this operating state, the blow-by gases, which flow into the pressure control valve 35 in the direction of the arrow 43, can pass freely into the pipe 37 and from there into the air supply.
  • the diaphragm valve body 41 is clamped between the cover and the lower part and closes an upper valve chamber 44. However, this upper valve chamber is open to the outside via a bore 45, so that the ambient pressure prevails in this valve chamber.
  • the bore 45 is expediently covered by a small filter sheet 46.
  • the O-ring 40 provides an effective seal for the oil fill opening.
  • the lower part 39 of the pressure control valve has a bore 48. This bore is slightly larger than the upward part of the tube 37.
  • the pressure control valve 35 is removed for refilling engine oil. If small amounts of engine oil also get into the pipe 37, they flow down through a bore 49.
  • a variant according to FIG. 2 is constructed in the same way as in FIG. 1 with regard to the pressure control valve. Only the pipe, which is connected to the air supply to the internal combustion engine, is divided into two here.
  • the tube 50 shown in FIG. 2 has an annular opening 51 in its interior.
  • the pressure control valve 35 is equipped with a tubular extension 52. This is closed at its lower end and has lateral outlet bores or outlet openings 53, 54. If the pressure control valve 35 is placed on the oil filler opening 33, the tubular extension 53 engages in the tube 50 and thus establishes a connection for the blow-by gases forth. O-rings 55, 56 are provided to seal the two elements.
  • FIG. 3 A pressure control valve, which is suitable for compensating even high intake manifold negative pressures, is shown in FIG. 3.
  • This consists of a valve housing 11, which has an inflow opening. This inflow opening lies within the oil fill opening 33.
  • the valve housing 11 is open at the top and contains an annular groove 15 at its upper opening.
  • a housing cover 13 is fastened to this opening of the valve housing 11, a membrane 14 being inserted between the housing cover 13 and the valve housing 11.
  • the membrane surface of this membrane is thickened in its central part and has in this area a valve plate-shaped surface 22 which faces the valve housing.
  • a first valve chamber 29 is formed between the membrane 14 and the housing cover 13 and is connected to the atmospheric external pressure via a ventilation hole 16.
  • the valve housing 11 is arranged above a drain pipe 12.
  • This drain connector 12 is provided with an annular bead 30 for connecting a hose.
  • the central region of the membrane 14 is supported by a support body 27 or protects the membrane from the parts acting there on the membrane.
  • a hollow cylindrical part 26 is placed on this support body 27. This can either be rigidly connected to the support body or be designed as a single element.
  • a compression spring 25 bears against an annular collar of the hollow cylindrical part 26. This compression spring 25 is supported with its opposite end on the valve housing. The diaphragm is in an upper end position by the compression spring emotional. In this end position, the membrane lies in the area of its thickening 31 on the housing cover 13.
  • An intermediate valve 18 is located within the hollow cylindrical part 26.
  • This intermediate valve 18 is provided with a valve plate 19 and with a valve seat 21.
  • the intermediate valve 18 has a valve opening 20 with a certain diameter, which is smaller than the diameter of the valve seat 17.
  • the intermediate valve 18 is held in the position shown by a compression spring 24 in the retired state.
  • two differently acting valves are formed in the pressure control valve, namely a valve consisting of valve plate 19 and valve seat 17 and a valve with valve plate 22 and valve seat 21.
  • the hollow cylindrical part 26 is provided with openings 23.
  • valve More detailed explanations of the valve can be found in DE-OS 40 22 129.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Safety Valves (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
  • Motor Or Generator Frames (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)

Abstract

A pressure control valve is proposed, especially for controlling the vacuum in the crankcase. This pressure control valve is arranged on an oil filler opening 33 and simultaneously assumes the function of a cover for the oil filler opening. In the oil filler opening a pipe 37 is provided, by way of which the crankcase gases can be led to the air feed of the internal combustion engine. The pressure control valve serves for setting a certain vacuum in the crankcase, is of compact construction and can easily be replaced or inspected. <IMAGE>

Description

Die Erfindung betrifft eine Ventilhaube für eine Brennkraftmaschine nach dem Oberbegriff des Hauptanspruchs. Diese Ventilhauben sind üblicherweise mit einer Öleinfüllöffnung versehen, die mit einem Deckel abgeschlossen ist.The invention relates to a valve cover for an internal combustion engine according to the preamble of the main claim. These valve covers are usually provided with an oil filler opening, which is closed with a lid.

Es ist allgemein bekannt, Druckregelventile zur Kurbelgehäuseentlüftung, beispielsweise in der Entlüftungsleitung zwischen Kurbelgehäuse und Ansaugluftfilter oder Motorsaugrohr anzuordnen. Aufgrund dieser Druckregelventile besteht eine geschlossene Verbindung zwischen dem Kurbelgehäuse und der Ansaugseite des Motors über die die sogenannten Durchblasgase abgesaugt und dem Verbrennungsprozess wieder zugeführt werden. Das Druckregelventil sorgt dafür, daß ein bestimmter Unterdruck im Kurbelgehäuse nicht unterschritten wird. Ein stets herrschender kleiner Unterdruck im Kurbelgehäuse verhindert das Austreten von Durchblasgase ins Freie. Durch die Regelung des Kurbelgehäusedrucks wird eine optimale Absicherung des geschlossenen Motorsystems gewährleistet, so daß keine Schadstoffe ins Freie gelangen können.It is generally known to arrange pressure regulating valves for crankcase ventilation, for example in the ventilation line between the crankcase and the intake air filter or engine intake manifold. Because of these pressure control valves, there is a closed connection between the crankcase and the intake side of the engine, through which the blow-by gases are drawn off and fed back into the combustion process. The pressure control valve ensures that the vacuum in the crankcase does not fall below a certain level. A constantly prevailing small vacuum in the crankcase prevents blow-by gases from escaping outdoors. By regulating the crankcase pressure, an optimal protection of the closed engine system is guaranteed, so that no pollutants can get outside.

Ein solches Druckregelventil wird üblicherweise am Motor seitlich angeflanscht und mit entsprechenden Verbindungsleitungen an Kurbelgehäuse sowie Saugrohr oder Luftfilter angeschlossen. Derartige Ventile sind beispielsweise aus der Veröffentlichung der Firma FILTERWERK MANN + HUMMEL GMBH Nr. VKD 7032 bekannt. Das Druckregelventil ist überlicherweise mit einem Anschlußflansch oder einem Stahlbügel an dem Motorgehäuse befestigt.Such a pressure control valve is usually on the engine flanged on the side and connected to the crankcase as well as the intake manifold or air filter with appropriate connecting lines. Such valves are known for example from the publication of the company FILTERWERK MANN + HUMMEL GMBH No. VKD 7032. The pressure control valve is usually attached to the motor housing with a connecting flange or a steel bracket.

Zur optisch besseren Gestaltung des Motorraums ist es erforderlich, solche am Motor angeordneten Komponenten entsprechend zu gestalten und beispielsweise mit Abdeckungen oder ähnlichem zu versehen. Dies bedingt jedoch einen höhen Aufwand und damit Mehrkosten.For a better design of the engine compartment, it is necessary to design such components arranged on the engine accordingly and to provide them with covers or the like, for example. However, this requires a lot of effort and thus additional costs.

Die US-A-3 990 489 offenbart eine Ventilhaube gemäß dem Oberbegriff des Anspruchs 1; bei dieser Anordnung jedoch wird die Betätigung des Deckels durch die Anschlußleitung erschwert.US-A-3 990 489 discloses a valve cover according to the preamble of claim 1; With this arrangement, however, the operation of the cover is made more difficult by the connecting line.

Der Erfindung liegt deshalb die Aufgabe zugrunde, die genannten Nachteile zu vermeiden und eine Ventilhaube zu schaffen, die zur besseren Gestaltung des Motors beiträgt und außerdem konstruktiv einfach ist.The invention is therefore based on the object of avoiding the disadvantages mentioned and of creating a valve cover which contributes to the better design of the engine and is also structurally simple.

Diese Aufgabe wird ausgehend von dem Oberbegriff des Hauptanspruchs durch dessen kennzeichnenden Merkmale gelöst.This object is achieved on the basis of the preamble of the main claim by its characterizing features.

Der wesentliche Vorteil der Lösung gemäß Anspruch 1 ist darin zu sehen, daß nunmehr das Druckregelventil in den Deckel des Öleinfüllstutzens integriert wird und damit zusätzlich die Funktion des Deckels übernimmt.The main advantage of the solution according to claim 1 is the fact that the pressure control valve is now integrated in the cover of the oil filler neck and thus also takes over the function of the cover.

Dies hat den Vorteil, daß eine schnelle Überprüfung des Druckregelventils und ein eventuell erforderlicher Austausch in einfacher Weise ermöglicht wird. Außerdem entfällt die zusätzliche Schlauchverbindung, die bisher vom Motor zu dem Druckregelventil erforderlich war, da das Druckregelventil nunmehr unmittelbar am Motor die Durchblasgase aufnimmt. Ferner stellt die Integration des Ventils in den Deckel eine gute Lösung des gestalterischen Problems dar.This has the advantage that a quick check of the pressure control valve and any replacement that may be required is made possible in a simple manner. In addition, the additional hose connection that was previously required from the engine to the pressure control valve is eliminated, since the pressure control valve now absorbs the blow-by gases directly on the engine. Furthermore, the integration of the valve in the cover is a good solution to the design problem.

Es ist zwar aus der DE 40 17 074 ein Druckregelventil bekannt, das in einer kombinatorischen Einheit mit Öleinfüllstutzen und Ölpeilstab angeordnet ist. Dieses Druckregelventil ist jedoch immer noch mit dem Saugrohr bzw. der Luftzuführung des Motors verbunden. Ein Austausch oder eine Überprüfung läßt sich deshalb nicht ohne weiteres vornehmen.A pressure control valve is known from DE 40 17 074, which is arranged in a combinatorial unit with an oil filler neck and an oil dipstick. However, this pressure control valve is still connected to the intake manifold or the air supply to the engine. An exchange or a check cannot therefore be carried out easily.

Der Anschluß zur Weiterleitung der Kurbelgehäusegase ist koaxial im Öleinfüllstutzen angeordnet. Über diesen Anschluß wird der Deckel, welcher das Druckregelventil aufnimmt beispielsweise mittels eines Bajonettverschlusses aufgesteckt und stellt damit die Verbindung für das Kurbelgehäusegas her.The connection for forwarding the crankcase gases is arranged coaxially in the oil filler neck. The cover, which receives the pressure control valve, is attached to this connection, for example by means of a bayonet lock, and thus establishes the connection for the crankcase gas.

Eine alternative Weiterbildung wird gemäß einem Unteranspruch dadurch erzielt, daß der Anschluß zum Weiterleiten der Kurbelgehäusegase im Öleinfüllstutzen eine Ringöffnung aufweist. Das Druckregelventil ist in diesem Fall mit einem rohrförmigen Ansatz versehen, welcher im Bereich der Ringöffnung Bohrungen aufweist, die bei geschlossenem Deckel die Verbindung für die Kurbelgehäusegase herstellen.An alternative development is achieved according to a subclaim in that the connection for forwarding the crankcase gases in the oil filler neck has an annular opening. In this case, the pressure regulating valve is provided with a tubular extension which has bores in the area of the ring opening which, when the cover is closed, produce the connection for the crankcase gases.

Eine weitere Ausgestaltung der Erfindung sieht vor, den im Öleinfüllstutzen vorgesehenen Anschluß bzw. den rohrförmigen Ansatz des Druckregelventils an seiner Stirnkante als Ventilsitz auszubilden. Dem Ventilsitz gegenüberliegend ist ein Membranventilkörper angeordnet, welcher in Abhängigkeit von den Druckverhältnissen ein Verschließen oder Öffnen des Ventils bewirkt.A further embodiment of the invention provides for the connection provided in the oil filler neck or the tubular extension of the pressure control valve to be designed as a valve seat on its front edge. A diaphragm valve body is arranged opposite the valve seat, which causes the valve to close or open depending on the pressure conditions.

Eine Weiterbildung der Erfindung ist besonders dort vorteilhaft, wo die Durchblasgase direkt in das Saugrohr des Motors geleitet werden müssen. Bekanntlich liegt im Saugrohr bei Leerlauf und Schubbetrieb ein sehr hoher Unterdruck an. Dieser hohe Unterdruck würde ein Öffnen des Ventils verhindern. Dadurch könnte ein Ansteigen des Drucks im Kurbelgehäuse verursacht werden.A further development of the invention is particularly advantageous where the blow-by gases have to be conducted directly into the intake manifold of the engine. As is known, there is a very high negative pressure in the intake manifold when idling and coasting. This high vacuum would prevent the valve from opening. This could increase the pressure in the crankcase caused.

Gemäß der Weiterbildung der Erfindung wird ein zweifach wirkendes Ventil angewendet, das beispielsweise in der DE-OS 40 22 129 beschrieben ist. Dieses Ventil hat den Vorteil, daß zwei Ventilsysteme für unterschiedliche Druckverhältnisse in einem Gehäuse vereint sind, wobei für beide Ventilsysteme nur eine einzige Membran erforderlich ist. Trotzdem wird ein einfacher, montagefreundlicher Aufbau des gesamten Druckregelventils erzielt wird.According to the development of the invention, a double-acting valve is used, which is described for example in DE-OS 40 22 129. This valve has the advantage that two valve systems for different pressure conditions are combined in one housing, only one membrane being required for both valve systems. Nevertheless, a simple, assembly-friendly construction of the entire pressure control valve is achieved.

Die Teile des Druckregelventils sind beispielsweise aus Kunststoffspritzguß hergestellt. Damit ist es möglich, solche Ventile kostengünstig und in großen Stückzahlen zu fertigen. Lediglich der Membranventilkörper ist aus einem Gummiwerkstoff gefertigt.The parts of the pressure control valve are made, for example, from plastic injection molding. This makes it possible to manufacture such valves inexpensively and in large quantities. Only the diaphragm valve body is made of a rubber material.

Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen näher erläutert. Es zeigt:

Fig. 1
ein Druckregelventil an dem öleinfüllstutzen eines Motors
Fig. 2
eine Variante des in Fig. 1 gezeigten Druckregelventils
Fig. 3
ein Druckregelventil für hohe Saugrohrunterdrücke.
The invention is explained in more detail below on the basis of exemplary embodiments. It shows:
Fig. 1
a pressure control valve on the oil filler neck of an engine
Fig. 2
a variant of the pressure control valve shown in Fig. 1
Fig. 3
a pressure control valve for high intake manifold pressures.

Fig. 1 zeigt schematisch eine Öleinfüllöffnung 33, an dem das Gehäuse 34 des Druckregelventils 35 über einen Bajonettverschluß 36 angeordnet ist. An der Öleinfüllöffnung 33 führt ein abgeknicktes Rohr 37 nach außen. An dessen Öffnung kann ein Schlauch befestigt werden, der mit der Luftzuführung der Brennkraftmaschine, also dem Saugrohr oder dem Luftfiltergehäuse, verbunden ist. Das Druckregelventil 35 besteht aus einem Deckelteil 38, einem Unterteil 39, einem O-Ring 40 und einem Membranventilkörper 41. Der Membranventilkörper wird durch eine Feder 42 in einer Offenstellung gehalten. In diesem Betriebszustand können die Durchblasgase, welche in Richtung des Pfeils 43 in das Druckregelventil 35 einströmen, ungehindert in das Rohr 37 und von dort in die Luftzuführung gelangen. Der Membranventilkörper 41 ist zwischen Deckel und Unterteil eingespannt und schließt eine obere Ventilkammer 44 ab. Diese obere Ventilkammer ist jedoch über eine Bohrung 45 nach außen geöffnet, so daß in dieser Ventilkammer der Umgebungsdruck herrscht. Die Bohrung 45 ist zweckmäßigerweise mittels eines kleinen Filterblättchens 46 abgedeckt. Sobald der Unterdruck in dem Rohr 37 ansteigt, bewegt sich der Membranventilkörper 41 entgegen der Federkraft auf den Ventilsitz 47 des Rohrs 37 zu und reduziert damit die Menge des durchströmenden Gases. Die Feder 42 und die Ventilflächen sind so bemessen, daß im Kurbelgehäuse ständig ein geringer Unterdruck herrscht. Der O-Ring 40 sorgt für eine wirksame Abdichtung der öleinfüllöffnung. Das Unterteil 39 des Druckregelventils weist eine Bohrung 48 auf. Diese Bohrung ist geringfügig größer als der nach oben gerichtete Teil des Rohrs 37.Fig. 1 shows schematically an oil fill opening 33, on which the housing 34 of the pressure control valve 35 is arranged via a bayonet lock 36. At the oil fill opening 33, a bent pipe 37 leads to the outside. At the opening, a hose can be attached, which is connected to the air supply to the internal combustion engine, that is, the intake manifold or the air filter housing. The pressure control valve 35 consists of a cover part 38, a lower part 39, an O-ring 40 and a diaphragm valve body 41 The diaphragm valve body is held in an open position by a spring 42. In this operating state, the blow-by gases, which flow into the pressure control valve 35 in the direction of the arrow 43, can pass freely into the pipe 37 and from there into the air supply. The diaphragm valve body 41 is clamped between the cover and the lower part and closes an upper valve chamber 44. However, this upper valve chamber is open to the outside via a bore 45, so that the ambient pressure prevails in this valve chamber. The bore 45 is expediently covered by a small filter sheet 46. As soon as the negative pressure in the pipe 37 increases, the diaphragm valve body 41 moves against the spring force towards the valve seat 47 of the pipe 37 and thus reduces the amount of gas flowing through. The spring 42 and the valve surfaces are dimensioned so that there is always a slight negative pressure in the crankcase. The O-ring 40 provides an effective seal for the oil fill opening. The lower part 39 of the pressure control valve has a bore 48. This bore is slightly larger than the upward part of the tube 37.

Zum Nachfüllen von Motoröl wird das Druckregelventil 35 abgenommen. Sofern geringe Mengen von Motoröl auch in das Rohr 37 gelangen, fliesen diese über eine Bohrung 49 nach unten ab.The pressure control valve 35 is removed for refilling engine oil. If small amounts of engine oil also get into the pipe 37, they flow down through a bore 49.

Eine Variante gemäß Fig. 2 ist bezüglich des Druckregelventils in gleicher Weise wie in Fig. 1 aufgebaut. Lediglich das Rohr, welches mit der Luftzuführung der Brennkraftmaschine verbunden wird, ist hier zweigeteilt. Das in Fig. 2 dargestellte Rohr 50 weist in seinem Inneren eine Ringöffnung 51 auf. Das Druckregelventil 35 ist mit einem rohrförmigen Ansatz 52 ausgestattet. Dieser ist an seinem unteren Ende verschlossen und hat seitliche Austrittsbohrungen oder Austrittsöffnungen 53, 54. Wird das Druckregelventil 35 auf die Öleinfüllöffnung 33 aufgesetzt, so greift der rohrförmige Ansatz 53 in das Rohr 50 ein und stellt damit eine Verbindung für die Durchblasgase her. Zur Abdichtung der beiden Elemente sind O-Ringe 55, 56 vorgesehen.A variant according to FIG. 2 is constructed in the same way as in FIG. 1 with regard to the pressure control valve. Only the pipe, which is connected to the air supply to the internal combustion engine, is divided into two here. The tube 50 shown in FIG. 2 has an annular opening 51 in its interior. The pressure control valve 35 is equipped with a tubular extension 52. This is closed at its lower end and has lateral outlet bores or outlet openings 53, 54. If the pressure control valve 35 is placed on the oil filler opening 33, the tubular extension 53 engages in the tube 50 and thus establishes a connection for the blow-by gases forth. O-rings 55, 56 are provided to seal the two elements.

Ein Druckregelventil, welches geeignet ist, auch hohe Saugrohrunterdrücke auszugleichen, zeigt Fig. 3. Dieses besteht aus einem Ventilgehäuse 11, welches eine Zuflußöffnung aufweist. Diese Zuflußöffnung liegt innerhalb der Öleinfüllöffnung 33.A pressure control valve, which is suitable for compensating even high intake manifold negative pressures, is shown in FIG. 3. This consists of a valve housing 11, which has an inflow opening. This inflow opening lies within the oil fill opening 33.

Das Ventilgehäuse 11 ist nach oben offen und enthält an seiner oberen Öffnung eine Ringnut 15. Auf dieser Öffnung des Ventilgehäuses 11 wird ein Gehäusedeckel 13 befestigt, wobei zwischen Gehäusedeckel 13 und Ventilgehäuse 11 eine Membran 14 eingelegt ist. Die Membranfläche dieser Membran ist in ihrem mittleren Teil verdickt und weist in diesem Bereich eine ventilplattenförmige Fläche 22 auf, welche dem Ventilgehäuse zugewandt ist.The valve housing 11 is open at the top and contains an annular groove 15 at its upper opening. A housing cover 13 is fastened to this opening of the valve housing 11, a membrane 14 being inserted between the housing cover 13 and the valve housing 11. The membrane surface of this membrane is thickened in its central part and has in this area a valve plate-shaped surface 22 which faces the valve housing.

Zwischen Membran 14 und Gehäusedeckel 13 wird eine erste Ventilkammer 29 gebildet, welche über eine Belüftungsbohrung 16 mit dem atmosphärischen Außendruck in Verbindung steht. Das Ventilgehäuse 11 ist über einem Abflußstutzen 12 angeordnet. Dieser Abflußstutzen 12 ist mit einem Ringwulst 30 zum Anschluß eines Schlauchs versehen.A first valve chamber 29 is formed between the membrane 14 and the housing cover 13 and is connected to the atmospheric external pressure via a ventilation hole 16. The valve housing 11 is arranged above a drain pipe 12. This drain connector 12 is provided with an annular bead 30 for connecting a hose.

Der mittlere Bereich der Membran 14 wird durch einen Stützkörper 27 abgestützt bzw. schützt die Membran vor den dort auf die Membran einwirkenden Teilen. An diesen Stützkörper 27 ist ein hohlzylindrisches Teil 26 angelegt. Dieses kann sowohl starr mit dem Stützkörper verbunden sein, als auch als ein einzelnes Element ausgestaltet sein.The central region of the membrane 14 is supported by a support body 27 or protects the membrane from the parts acting there on the membrane. A hollow cylindrical part 26 is placed on this support body 27. This can either be rigidly connected to the support body or be designed as a single element.

An einem ringförmigen Kragen des hohlzylindrischen Teils 26 liegt eine Druckfeder 25 an. Diese Druckfeder 25 stützt sich mit ihrem gegenüberliegenden Ende an dem Ventilgehäuse ab. Durch die Druckfeder wird die Membran in eine obere Endstellung bewegt. In dieser Endstellung liegt die Membran im Bereich ihrer Verdickung 31 an dem Gehäusedeckel 13 an.A compression spring 25 bears against an annular collar of the hollow cylindrical part 26. This compression spring 25 is supported with its opposite end on the valve housing. The diaphragm is in an upper end position by the compression spring emotional. In this end position, the membrane lies in the area of its thickening 31 on the housing cover 13.

Innerhalb des hohlzylindrischen Teils 26 befindet sich ein Zwischenventil 18. Dieses Zwischenventil 18 ist mit einer Ventilplatte 19 und mit einem Ventilsitz 21 versehen. Außerdem hat das Zwischenventil 18 eine Ventilöffnung 20 mit einem bestimmten Durchmesser, welcher kleiner als der Durchmesser des Ventilsitzes 17 ist. Das Zwischenventil 18 wird von einer Druckfeder 24 im Ruhestand in der dargestellten Lage gehalten. Durch dieses Zwischenventil werden in dem Druckregelventil zwei unterschiedlich wirkende Ventile gebildet, und zwar ein Ventil bestehend aus Ventilplatte 19 und Ventilsitz 17 und ein Ventil mit Ventilplatte 22 und Ventilsitz 21. Das hohlzylindrische Teil 26 ist mit Durchbrüchen 23 versehen.An intermediate valve 18 is located within the hollow cylindrical part 26. This intermediate valve 18 is provided with a valve plate 19 and with a valve seat 21. In addition, the intermediate valve 18 has a valve opening 20 with a certain diameter, which is smaller than the diameter of the valve seat 17. The intermediate valve 18 is held in the position shown by a compression spring 24 in the retired state. By means of this intermediate valve, two differently acting valves are formed in the pressure control valve, namely a valve consisting of valve plate 19 and valve seat 17 and a valve with valve plate 22 and valve seat 21. The hollow cylindrical part 26 is provided with openings 23.

In der Fig. 3 gezeigten Stellung werden die in einem Kurbelgehäuse sich bildenden Gase, welche über den Zufluß 28 einströmen, über den Abflußstutzen 12 abgesaugt, wobei beide Ventile geöffnet sind. Diese Ventilstellung ist wirksam, wenn der Saugrohrunterdruck sehr gering ist bzw. nahezu kein Saugrohrunterdruck herrscht. In dieser Stellung kann der größtmögliche Durchsatz an Durchblasgasen auch bei geringem Saugrohrunterdruck erzielt werden.In the position shown in FIG. 3, the gases which form in a crankcase and which flow in via the inflow 28 are drawn off via the outflow connection 12, both valves being open. This valve position is effective when the intake manifold vacuum is very low or there is almost no intake manifold vacuum. In this position, the greatest possible throughput of blow-by gases can be achieved even with a low intake manifold vacuum.

Nähere Erläuterungen zu dem Ventil können der DE-OS 40 22 129 entnommen werden.More detailed explanations of the valve can be found in DE-OS 40 22 129.

BezugszeichenlisteReference list

1010th
ZuflußstutzenInflow connection
1111
VentilgehäuseValve body
1212th
AbflußstutzenDrain connector
1313
GehäusedeckelHousing cover
1414
Membranmembrane
1515
RingnutRing groove
1616
BelüftungsbohrungVentilation hole
1717th
VentilsitzValve seat
1818th
ZwischenventilIntermediate valve
1919th
VentilplatteValve plate
2020th
VentilöffnungValve opening
2121
VentilsitzValve seat
2222
VentilplatteValve plate
2323
DurchbrücheBreakthroughs
2424th
DruckfederCompression spring
2525th
DruckfederCompression spring
2626
hohlzylindrisches Teilhollow cylindrical part
2727
StützkörperSupport body
2828
RingwulstRing bead
2929
VentilkammerValve chamber
3030th
RingwulstRing bead
3131
Verdickungthickening
3232
VentilkammerValve chamber
3333
ÖleinfüllöffnungOil filler opening
3434
Gehäusecasing
3535
DruckregelventilPressure control valve
3636
BajonettverschlußBayonet lock
3737
Rohrpipe
3838
Deckelcover
3939
UnterteilLower part
4040
O-RingO-ring
4141
HembranventilkörperCheck valve body
4242
Federfeather
4343
Pfeilarrow
4444
VentilkammerValve chamber
4545
Bohrungdrilling
4646
FilterplättchenFilter plate
4747
VentilsitzValve seat
4848
Bohrungdrilling
4949
Bohrungdrilling
5050
Rohrpipe
5151
RingöffnungRing opening
5252
rohrförmiger Ansatztubular neck
5353
AustrittsöffnungOutlet opening
5454
AustrittsöffnungOutlet opening
5555
O-RingO-ring
5656
O-RingO-ring

Claims (3)

  1. Valve cover for an internal combustion engine, having a filler aperture for engine oil provided in the valve cover, which aperture is closed by a closure cap (38), a pressure regulating valve for the crankcase breathing of the internal combustion engine being incorporated in the closure cap (38) of the oil filler aperture (33), and the pressure regulating valve being provided with a connection (43) for supplying the crankcase gas and a connection (37), which communicates with the air supply of the internal combustion engine via a connection line, the housing (34) of the pressure regulating valve having a substantially cylindrical configuration, characterised in that the connection (37) for the further conduction of the crankcase gases is disposed in the oil filler aperture (33), and this connection has an aperture, which is disposed coaxially relative to the oil filler aperture and communicates with the pressure regulating valve.
  2. Valve cover according to claim 1, characterised in that the connection (50) has an annular aperture (51) for the further conduction of the crankcase gases from the oil filler aperture, and the pressure regulating valve includes a tubular extension member (52), which engages in the annular aperture (51) when the cap is closed, and which establishes a connection for the crankcase gases.
  3. Valve cover according to one of the preceding claims, characterised in that the connection (52) or the aperture at the front edge forms the valve seat (47), and a diaphragm valve body (41) is provided opposite said seat.
EP93101358A 1992-04-18 1993-01-29 Valve cover for an internal combustion engine Expired - Lifetime EP0566826B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4212968 1992-04-18
DE4212968A DE4212968C2 (en) 1992-04-18 1992-04-18 Pressure control valve for the crankcase ventilation of an internal combustion engine

Publications (2)

Publication Number Publication Date
EP0566826A1 EP0566826A1 (en) 1993-10-27
EP0566826B1 true EP0566826B1 (en) 1997-03-26

Family

ID=6457074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93101358A Expired - Lifetime EP0566826B1 (en) 1992-04-18 1993-01-29 Valve cover for an internal combustion engine

Country Status (12)

Country Link
US (1) US5335641A (en)
EP (1) EP0566826B1 (en)
AT (1) ATE150844T1 (en)
BR (1) BR9300943A (en)
CZ (1) CZ280017B6 (en)
DE (2) DE4212968C2 (en)
ES (1) ES2101882T3 (en)
HR (1) HRP930135B1 (en)
MX (1) MX9302115A (en)
SI (1) SI9300123A (en)
SK (1) SK280497B6 (en)
YU (1) YU48625B (en)

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5704770A (en) * 1994-09-12 1998-01-06 Westinghouse Air Brake Company Air passage insert for oil fill spout
US5542401A (en) * 1994-11-09 1996-08-06 En-Ovation Technology, Inc. Internal combustion engine crankcase vacuum method and apparatus
US5499616A (en) * 1995-05-22 1996-03-19 Dresser Industries, Inc. Crankcase pressure regulation system for an internal combustion engine
DE19602194B4 (en) * 1996-01-23 2005-07-28 Deutz Ag crankcase ventilation
US6314808B1 (en) 1996-02-27 2001-11-13 Felsted Products Llc Fluid level measuring device
DE19732367A1 (en) * 1997-07-28 1999-02-04 Volkswagen Ag Crankcase ventilation valve for an internal combustion engine
JPH11303991A (en) 1998-04-20 1999-11-02 Yamaha Motor Co Ltd Parking brake device of vehicle
US6296073B1 (en) * 1999-06-23 2001-10-02 Bombardier Inc. All terrain vehicle with improved motor arrangement
EP1091099B1 (en) * 1999-10-07 2006-06-07 Siemens VDO Automotive Inc. Positive crankcase ventilation system
DE60123795T2 (en) * 2000-05-25 2007-08-23 Asco Controls, L.P. PRESSURE REGULATING PISTON WITH BUILT-OVER PRESSURE VALVE
DE10042462B4 (en) * 2000-08-29 2011-02-17 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Ventilation system for the crankcase ventilation of internal combustion engines
DE20016214U1 (en) * 2000-09-18 2002-02-07 Ing. Walter Hengst GmbH & Co. KG, 48147 Münster Throttle valve for automatic regulation of the pressure in the crankcase of an internal combustion engine
US6935044B2 (en) * 2001-06-13 2005-08-30 Orscheln Products Llc Connection system for a fluid level measuring device
DE10136463B4 (en) * 2001-07-26 2010-04-15 Man Nutzfahrzeuge Ag crankcase ventilation
DE10143686B4 (en) * 2001-08-31 2016-07-21 Volkswagen Ag Ventilation device for internal combustion engines
EP1432965A1 (en) * 2001-10-01 2004-06-30 Orscheln Products LLC Flexible dipstick for measuring liquid level
DE20118388U1 (en) * 2001-11-13 2003-03-27 Hengst GmbH & Co.KG, 48147 Münster Device for the crankcase ventilation of an internal combustion engine
EP1463923A2 (en) 2002-01-09 2004-10-06 Orscheln Products LLC Dipstick assembly for measuring liquid level
DE10236783B4 (en) * 2002-08-10 2008-12-24 Mann + Hummel Gmbh Pressure control valve
FR2844547B1 (en) * 2002-09-16 2004-10-22 Peugeot Citroen Automobiles Sa PRESSURE RELIEF DEVICE FOR AN INTERNAL COMBUSTION ENGINE, PARTICULARLY FOR A MOTOR VEHICLE
DE10305172A1 (en) * 2003-02-08 2004-08-26 Mann + Hummel Gmbh Fluid pressure control valve, especially for regulating crankcase ventilation of a combustion engine, has a damper with a compressible damping fluid that damps movement of the valve body
WO2004081364A1 (en) * 2003-03-11 2004-09-23 Yanmar Co., Ltd. Upper structure of engine
DE20310841U1 (en) * 2003-07-14 2004-11-25 Hengst Gmbh & Co.Kg Module for an internal combustion engine
US7140358B1 (en) * 2005-05-06 2006-11-28 Toyota Technical Center Usa, Inc. Oil separator
ATE434208T1 (en) † 2006-04-08 2009-07-15 Polytec Automotive Gmbh & Co Kg PRESSURE LIMITING VALVE, PREFERABLY FOR REGULATING THE PRESSURE IN THE CRANKCASE OF AN INCOMMODATION ENGINE
DE102008028543B3 (en) * 2008-06-16 2009-10-08 Reinz-Dichtungs-Gmbh Valve for use in venting system for ventilation of crank case of combustion engine, has auxiliary membrane and bar provided for producing force on flexibly movable tax control membrane as function of difference of pressure
US8617277B2 (en) * 2009-07-07 2013-12-31 Donaldson Company, Inc. Pressure regulation control assembly; crankcase ventilation filter assembly including pressure regulation control assembly; components; and, methods
DE102011112584B4 (en) * 2011-09-08 2015-12-31 Mann + Hummel Gmbh Crankcase breather
US9759104B2 (en) * 2011-09-08 2017-09-12 Mann+Hummel Gmbh Crankcase ventilation device
CN103016097A (en) * 2012-12-19 2013-04-03 顺达（芜湖）汽车饰件有限公司 Oil filler cap assembly
DE102013202762B4 (en) 2013-02-20 2022-01-13 Elringklinger Ag cam cover
EP2818960B1 (en) * 2013-06-24 2018-11-14 Danfoss A/S Membrane for dynamic valve
DE102013111955A1 (en) 2013-10-30 2015-04-30 Thyssenkrupp Presta Teccenter Ag Controllable oil separator
DE102015101181B4 (en) * 2015-01-28 2017-02-23 Thyssenkrupp Ag Controllable oil separator
DE102015005692A1 (en) 2015-05-06 2016-11-10 Mann + Hummel Gmbh Pressure control valve
ES2733448T3 (en) * 2016-01-04 2019-11-29 Danfoss As Capsule for a valve and valve
DE102016012711A1 (en) 2016-10-25 2018-04-26 Daimler Ag Filling device for an internal combustion engine, in particular a motor vehicle
DE102017010071A1 (en) 2016-11-02 2018-05-03 Mann+Hummel Gmbh Unit for regulating or controlling a fluid pressure
DE102016013009A1 (en) * 2016-11-02 2018-05-03 Mann + Hummel Gmbh Unit for regulating or controlling a fluid pressure
DE102017010020A1 (en) * 2016-11-02 2018-05-03 Mann + Hummel Gmbh Unit for regulating or controlling a fluid pressure
DE102016013008A1 (en) * 2016-11-02 2018-05-03 Mann + Hummel Gmbh Unit for regulating or controlling a fluid pressure
DE102017010019A1 (en) * 2016-11-02 2018-05-03 Mann + Hummel Gmbh Unit for regulating or controlling a fluid pressure
CN109386344A (en) * 2018-08-14 2019-02-26 东风朝阳朝柴动力有限公司 The engine oil filling cap being integrated with crankcase safety valve
CN111623154A (en) * 2020-05-27 2020-09-04 宁波万安股份有限公司 Gas pressure regulator
DE102021112473A1 (en) 2021-05-12 2022-11-17 BRUSS Sealing Systems GmbH Crankcase ventilation component
CN113530702B (en) * 2021-08-27 2022-12-16 安徽江淮汽车集团股份有限公司 Engine cylinder cover shield

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138148A (en) * 1961-08-12 1964-06-23 Simca Automobiles Sa Internal combustion engines
US3990489A (en) * 1974-08-19 1976-11-09 Ruter Lewis L Oil filler cap
GB1495870A (en) * 1976-02-04 1977-12-21 Ford Motor Co Crankcase breathers for internal combustion engines
US4169432A (en) * 1977-03-31 1979-10-02 Ford Motor Company Integrated PCV valve and oil filler cap
DE4017074A1 (en) * 1990-05-26 1991-11-28 Mann & Hummel Filter PRESSURE CONTROL VALVE FOR THE CRANKCASE VENTILATION ON AN INTERNAL COMBUSTION ENGINE
DE4022129A1 (en) * 1990-07-11 1992-01-16 Mann & Hummel Filter PRESSURE CONTROL VALVE FOR INSTALLATION IN A BLEEDING LINE ON AN INTERNAL COMBUSTION ENGINE

Also Published As

Publication number Publication date
SK406892A3 (en) 1993-11-10
MX9302115A (en) 1993-10-01
CZ406892A3 (en) 1993-11-17
CZ280017B6 (en) 1995-09-13
SI9300123A (en) 1993-12-31
YU5793A (en) 1996-07-24
HRP930135B1 (en) 1998-12-31
ATE150844T1 (en) 1997-04-15
SK280497B6 (en) 2000-03-13
YU48625B (en) 1999-03-04
BR9300943A (en) 1994-03-01
US5335641A (en) 1994-08-09
HRP930135A2 (en) 1994-10-31
DE4212968C2 (en) 1998-07-02
DE59305923D1 (en) 1997-04-30
DE4212968A1 (en) 1993-10-28
EP0566826A1 (en) 1993-10-27
ES2101882T3 (en) 1997-07-16

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