WO1998032955A1 - Internal combustion engine with a valve chamber cap - Google Patents

Internal combustion engine with a valve chamber cap Download PDF

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Publication number
WO1998032955A1
WO1998032955A1 PCT/EP1997/007304 EP9707304W WO9832955A1 WO 1998032955 A1 WO1998032955 A1 WO 1998032955A1 EP 9707304 W EP9707304 W EP 9707304W WO 9832955 A1 WO9832955 A1 WO 9832955A1
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WO
WIPO (PCT)
Prior art keywords
internal combustion
combustion engine
pressure control
valve chamber
control valve
Prior art date
Application number
PCT/EP1997/007304
Other languages
German (de)
French (fr)
Inventor
Klaus Baumgärtner
Uwe Brückner
Heinz Jawurek
Ingolf Lorenz
Heinz Müller
Siegfried Müller
Berthold Wenz
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.)
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Publication date
Application filed by Filterwerk Mann+Hummel Gmbh filed Critical Filterwerk Mann+Hummel Gmbh
Publication of WO1998032955A1 publication Critical patent/WO1998032955A1/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
    • 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
    • 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

Definitions

  • the invention relates to an internal combustion engine with a valve chamber cover according to the features of the main claim.
  • the valve chamber cover closes off the upper part of an internal combustion engine and usually has an oil filler neck and an opening for the outlet of the blow-by gases.
  • baffle plates are known for this purpose, which are arranged in the valve chamber cover and form a calming zone for the blow-by gases.
  • these are complex to manufacture. They are also limited in their effectiveness, particularly when local spray protection devices are required at certain locations in the valve chamber.
  • the invention is therefore based on the object of providing an internal combustion engine with a valve chamber cover, the oil mist separation and the spray protection being improved.
  • the main advantage of the invention is that a complex part made of thermoplastic is arranged in the valve chamber cover, which optimally fulfills the requirements for a splash guard and oil mist separator.
  • a pressure control valve for the blow-by gases is integrated in the valve chamber cover. This ensures that there is a certain slight negative pressure in the crankcase.
  • the thermoplastic plastic element it has at least two surface parts that run in parallel and extend in two planes. One or more chambers can thus be formed which are suitable for guiding the blow-by gases.
  • the pressure control valve can be integrated inside the valve chamber cover or in its outer contour, in the latter the pressure control valve is accessible from the outside or can be easily installed from the outside.
  • An improvement in the degree of separation in the blow-by gases can be achieved according to one embodiment of the invention in that a centrifugal separator is connected upstream of the pressure control valve. This is arranged on the outer contour of the pressure control valve to save space.
  • a further improvement in the separation behavior is achieved by a fleece or filter element connected upstream of the pressure control valve or the centrifugal separator.
  • deflection surfaces or baffles can be provided in the guide chambers for the blow-by gases.
  • a pressure control element pressure control valve
  • another element made of thermoplastic material which is usually arranged on the valve chamber cover, is integrated into the outer surface of the valve chamber cover.
  • connection between the valve chamber cover and the element to be integrated consists, for example, of a snap or snap connection. It is provided according to an advantageous embodiment of the invention to match the individual components of the respective element so that they are fixed when the element is connected to the valve chamber cover.
  • FIG. 1 shows the sectional view of a valve chamber cover
  • FIG. 2 shows a further sectional illustration of a valve chamber cover
  • FIG. 3 shows a plastic element in a side view
  • FIG. 4 shows a plan view of a pressure control valve
  • FIG. 5 an integrated pressure control valve
  • valve chamber cover 10 of an internal combustion engine, not shown here, in particular a diesel engine.
  • the valve chamber cover is made, for example, from an aluminum die-cast material. Of course, there is also the possibility of producing them from a thermoplastic.
  • a thermoplastic plastic element 11 is located in this cover. This is snapped or snapped into the cover and has a first surface part 12, which is directly adjacent to the valve lifters or the valve train, and a second surface part 13, which is located in the upper part of the valve chamber cover 10 extending chamber 14 forms.
  • the element 11 also has stiffening ribs 15, 16, 17 and a baffle plate 18 with a passage 19 for the crankcase gases.
  • FIG. 2 shows the element 11 in another sectional plane.
  • an extension 20 is provided, which is designed with latching connection elements 21, 22 (alternatively with a screw connection).
  • FIG. 3 shows the element 11 made of thermoplastic plastic in a side view with the pressure control valve 23 for the blow-by gases attached.
  • a pressure control valve for blow-by gases is described, for example, in DE Patent 40 22 129 and explained in more detail.
  • the pressure control valve 23 has a housing 24. In this there is a membrane 25, a compression spring 26. The housing is closed with a cover 27.
  • blow-by gases flow according to arrow 28 into an outer chamber 29, from there via a tangential inlet (not shown here) into chamber 56 and, when the valve is open, as shown here with arrow 30, reach outlet opening 31 and from there into the intake tract of the internal combustion engine.
  • the valve consisting of membrane 25 and compression spring 26 closes the opening 32 and thus prevents the pressure in the crankcase from falling below a certain limit value.
  • the blow-by gases first enter the space between the two surface parts 12 and 13 of element 11, and flow from there upward according to arrow 35 through a fleece or oil separator element 36 to pressure control valve 23.
  • a fleece or oil separator element 36 In the area the fleece 36 and below the pressure control valve 23 drain pipes 37, 38 are provided. The separated oil collects in these.
  • a poppet valve 39, 40 arranged at the lower end of the drain pipes opens so that the oil collected in the drain pipe can flow back into the crankcase.
  • the element 11 is provided with baffle plates 41, 42 at certain positions. These have the task of preventing particularly strong spraying at certain points on the valve train.
  • FIG. 4 shows a plan view of a modified variant of a pressure control valve 23.
  • a centrifugal separator is provided in the outer chamber of the pressure control valve.
  • the blow-by gas flows through the opening 43 into the centrifugal separator, reaches a constriction 44, experiences a speed increase there and then passes through the opening 45 into the inner chamber 56 of the pressure control valve. From there it leaves the valve via the opening 32 and the connecting piece 46.
  • the oil adhering to the outer wall 47 flows back into the crankcase via a drain hole, not shown here.
  • FIG. 5 shows the integration of a pressure control valve in the outer contour of a valve chamber cover. Only a simple baffle plate 57 is arranged in the valve chamber cover.
  • the pressure control valve 23 in turn consists of a housing 24, a membrane 25 and a compression spring 26 and is closed by a cover 48.
  • the cover 48 is fixed to the housing 24 via a snap connection 58, the individual parts are positioned by this snap connection.
  • the pressure control valve is a complete part and can be tested as a component before it is installed in the valve chamber cover.
  • valve can be adapted to the outer structure of the valve chamber cover and thus fulfills the requirement for an optimal shape or certain surface structures.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

The invention relates to an internal combustion engine with a valve chamber cap. The valve chamber cap comprises a pressure regulating valve (23) for blow-by gases and an element (11) consisting of a thermoplastic synthetic material designed to serve as splash guard.

Description

Brennkraftmaschine mit einem Ventilkammerdeckel Internal combustion engine with a valve chamber cover
Beschreibungdescription
Die Erfindung betrifft eine Brennkraftmaschine mit einem Ventilkammerdeckel nach den Merkmalen des Hauptanspruchs.The invention relates to an internal combustion engine with a valve chamber cover according to the features of the main claim.
Der Ventilkammerdeckel schließt den oberen Teil einer Brennkraftmaschine ab und weist üblicherweise einen Öleinfüllstutzen sowie eine Öffnung zum Austritt der Durchblasgase auf. Insbesondere bei einem Dieselmotor ist es erforderlich, die Austrittsöffnung für die Durchblasgase zuverlässig gegen Sprühöl oder Ölnebel abzudichten. Hierfür sind sogenannte Prallbleche bekannt, die in dem Ventilkammerdeckel angeordnet sind und eine Beruhigungszone für die Durchblasgase bilden. Diese sind jedoch aufgrund der Ventilkammerdeckelstruktur aufwendig bezüglich der Herstellung. Außerdem sind sie hinsichtlich ihrer Wirksamkeit beschränkt, und zwar insbesondere dann, wenn an bestimmten Stellen in der Ventilkammer örtliche Sprühschutzvorrichtungen erforderlich sind.The valve chamber cover closes off the upper part of an internal combustion engine and usually has an oil filler neck and an opening for the outlet of the blow-by gases. In particular in the case of a diesel engine, it is necessary to reliably seal the outlet opening for the blow-by gases against spray oil or oil mist. So-called baffle plates are known for this purpose, which are arranged in the valve chamber cover and form a calming zone for the blow-by gases. However, due to the valve chamber cover structure, these are complex to manufacture. They are also limited in their effectiveness, particularly when local spray protection devices are required at certain locations in the valve chamber.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Brennkraftmaschine mit einem Ventilkammerdeckel zu schaffen, wobei die Ölnebelabscheidung sowie der Sprühschutz verbessert wird.The invention is therefore based on the object of providing an internal combustion engine with a valve chamber cover, the oil mist separation and the spray protection being improved.
Diese Aufgabe wird durch die Merkmale des Hauptanspruchs gelöst.This object is solved by the features of the main claim.
Der wesentliche Vorteil der Erfindung besteht darin, daß im Ventilkammerdeckel ein komplexes Teil aus thermoplastischem Kunststoff angeordnet ist, welches optimal die Voraussetzungen für einen Spritzschutz sowie Ölnebelabscheider erfüllt. Außerdem ist im Ventilkammerdeckel ein Druclcregelventil für die Durchblasgase integriert. Dieses sorgt dafür, daß ein bestimmter geringfügiger Unterdruck im Kurbelgehäuse herrscht. Gemäß einer Ausgestaltung des thermoplastischen Kunststoffelements weist dieses wenigstens zwei parallel verlaufende und sich in zwei Ebenen erstreckende Flächenteile auf. Damit kann eine oder mehrere Kammern gebildet werden, die zur Führung der Durchblasgase geeignet sind.The main advantage of the invention is that a complex part made of thermoplastic is arranged in the valve chamber cover, which optimally fulfills the requirements for a splash guard and oil mist separator. In addition, a pressure control valve for the blow-by gases is integrated in the valve chamber cover. This ensures that there is a certain slight negative pressure in the crankcase. According to one embodiment of the thermoplastic plastic element, it has at least two surface parts that run in parallel and extend in two planes. One or more chambers can thus be formed which are suitable for guiding the blow-by gases.
Das Druckregelventil kann im Inneren des Ventilkammerdeckels oder in dessen Außenkontur integriert werden, bei letzterem ist das Druckregelventil von außen zugänglich bzw. kann von außen in einfacher Weise montiert werden.The pressure control valve can be integrated inside the valve chamber cover or in its outer contour, in the latter the pressure control valve is accessible from the outside or can be easily installed from the outside.
Eine Verbesserung des Abscheidegrades bei den Durchblasgasen läßt sich gemäß einer Ausgestaltung der Erfindung dadurch erzielen, daß dem Druckregelventil ein Fliehkraftabscheider vorgeschaltet ist. Dieser ist an der Außenkontur des Druckregelventils platzsparend angeordnet.An improvement in the degree of separation in the blow-by gases can be achieved according to one embodiment of the invention in that a centrifugal separator is connected upstream of the pressure control valve. This is arranged on the outer contour of the pressure control valve to save space.
Eine weitere Verbesserung des Abscheideverhaltens wird durch ein dem Druckregelventil bzw. dem Fliehkraftabscheider vorgeschaltetes Vlies oder Filterelement erzielt. Außerdem können Umlenkflächen bzw. Prallwände in den Leitkammern für die Durchblasgase vorgesehen sein. Zum Abfließen des abgeschiedenen Öls ist es zweckmäßig, Ablaufrohre vorzusehen, welche an ihrem geodätisch unteren Ende mit jeweils einem Rückschlagventil versehen sind, um ein Rückströmen des Öls wirksam zu verhindern sowie das Einströmen von Ölnebel zu unterbinden.A further improvement in the separation behavior is achieved by a fleece or filter element connected upstream of the pressure control valve or the centrifugal separator. In addition, deflection surfaces or baffles can be provided in the guide chambers for the blow-by gases. To drain off the separated oil, it is expedient to provide drain pipes which are each provided with a check valve at their geodetically lower end in order to effectively prevent the oil from flowing back and to prevent the inflow of oil mist.
In einer alternativen Ausgestaltung der Brennkraftmaschine mit einem Ventilkammerdeckel ist ein Druckregelelement (Druckregelventil) oder ein weiteres aus thermoplastischem Kunststoff bestehendes Element, welches üblicherweise an dem Ventilkammerdeckel angeordnet wird, in die Außenfläche des Ventilkammerdeckels integriert. Dies hat den Vorteil einer erheblichen Platzersparnis, außerdem stört die Struktur des Elements nicht die äußere Gestaltung der Brennkraftmaschine.In an alternative embodiment of the internal combustion engine with a valve chamber cover, a pressure control element (pressure control valve) or another element made of thermoplastic material, which is usually arranged on the valve chamber cover, is integrated into the outer surface of the valve chamber cover. This has the advantage of saving considerable space, and the structure of the element does not interfere with the external design of the internal combustion engine.
Die Verbindung zwischen Ventilkammerdeckel und zu integrierendem Element besteht beispielsweise aus einer Rast- oder Schnappverbindung. Dabei ist gemäß einer vorteilhaften Ausgestaltung der Erfindung vorgesehen, die einzelnen Bauteile des jeweiligen Elements so aufeinander abzustimmen, daß diese bei der Verbindung des Elements mit dem Ventilkammerdeckel fixiert werden. 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.The connection between the valve chamber cover and the element to be integrated consists, for example, of a snap or snap connection. It is provided according to an advantageous embodiment of the invention to match the individual components of the respective element so that they are fixed when the element is connected to the valve chamber cover. 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.
Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen näher erläutert. Es zeigt:The invention is explained in more detail below on the basis of exemplary embodiments. It shows:
Figur 1 die Schnittdarstellung eines Ventilkammerdeckels,FIG. 1 shows the sectional view of a valve chamber cover,
Figur 2 eine weitere Schnittdarstellung eines Ventilkammerdeckels,FIG. 2 shows a further sectional illustration of a valve chamber cover,
Figur 3 ein Kunststoffelement in Seitenansicht,FIG. 3 shows a plastic element in a side view,
Figur 4 eine Draufsicht auf ein Druckregelventil,FIG. 4 shows a plan view of a pressure control valve,
Figur 5 ein integriertes Druckregelventil,FIG. 5 an integrated pressure control valve,
Die Figur 1 zeigt in einer Schnittdarstellung den Ventilkammerdeckel 10 einer hier nicht näher dargestellten Brennkraftmaschine, insbesondere eines Dieselmotors. Der Ventilkammerdeckel ist beispielsweise aus einem Aluminium-Druckgußwerkstoff hergestellt. Selbstverständlich besteht auch die Möglichkeit, diese aus einem thermoplastischen Kunststoff herzustellen. In diesem Deckel befindet sich ein thermoplastisches Kunststoffelement 11. Dieses ist in den Deckel eingerastet oder eingeschnappt und weist ein erstes Flächenteil 12 auf, welches unmittelbar den Ventilstößeln bzw. dem Ventiltrieb benachbart ist sowie ein zweites Flächenteil 13, welches eine im oberen Teil des Ventilkammerdeckels 10 sich erstreckende Kammer 14 bildet. Das Element 11 weist ferner Versteifungsrippen 15, 16, 17 sowie eine Prallplatte 18 mit einem Durchgang 19 für die Kurbelgehäusegase auf.1 shows a sectional view of the valve chamber cover 10 of an internal combustion engine, not shown here, in particular a diesel engine. The valve chamber cover is made, for example, from an aluminum die-cast material. Of course, there is also the possibility of producing them from a thermoplastic. A thermoplastic plastic element 11 is located in this cover. This is snapped or snapped into the cover and has a first surface part 12, which is directly adjacent to the valve lifters or the valve train, and a second surface part 13, which is located in the upper part of the valve chamber cover 10 extending chamber 14 forms. The element 11 also has stiffening ribs 15, 16, 17 and a baffle plate 18 with a passage 19 for the crankcase gases.
Figur 2 zeigt das Element 11 in einer anderen Schnittebene. Zur Befestigung eines Druckregelventils ist ein Ansatz 20 vorgesehen, welcher mit Rastverbindungselementen 21, 22 ausgestaltet ist (alternativ mit Schraubverbindung).. Figur 3 zeigt das aus thermoplastischem Kunststoff bestehende Element 11 in einer Seitenansicht mit aufgestecktem Druckregelventil 23 für die Durchblasgase. Ein Druckregelventil für Durchblasgase ist beispielsweise in dem DE-Patent 40 22 129 beschrieben und näher erläutert. Das Druckregelventil 23 weist ein Gehäuse 24 auf. In diesem befindet sich eine Membran 25, eine Druckfeder 26. Das Gehäuse ist mit einem Deckel 27 verschlossen. Die Durchblasgase strömen gemäß dem Pfeil 28 in eine äußere Kammer 29, von dort über einen hier nicht dargestellten tangentialen Eintritt in die Kammer 56 und gelangen bei geöffnetem Ventil wie hier dargestellt gemäß dem Pfeil 30 zur Austrittsöffnung 31 und von dort in den Ansaugtrakt der Brennkraftmaschine. Sobald der Unterdruck im Ansaugtrakt der Brennkraftmaschine ansteigt, schließt das Ventil bestehend aus Membran 25 und Druckfeder 26 die Öffnung 32 und verhindert damit ein Absinken des Druckes im Kurbelgehäuse unter einen bestimmten Grenzwert.Figure 2 shows the element 11 in another sectional plane. To attach a pressure control valve, an extension 20 is provided, which is designed with latching connection elements 21, 22 (alternatively with a screw connection). FIG. 3 shows the element 11 made of thermoplastic plastic in a side view with the pressure control valve 23 for the blow-by gases attached. A pressure control valve for blow-by gases is described, for example, in DE Patent 40 22 129 and explained in more detail. The pressure control valve 23 has a housing 24. In this there is a membrane 25, a compression spring 26. The housing is closed with a cover 27. The blow-by gases flow according to arrow 28 into an outer chamber 29, from there via a tangential inlet (not shown here) into chamber 56 and, when the valve is open, as shown here with arrow 30, reach outlet opening 31 and from there into the intake tract of the internal combustion engine. As soon as the negative pressure in the intake tract of the internal combustion engine rises, the valve consisting of membrane 25 and compression spring 26 closes the opening 32 and thus prevents the pressure in the crankcase from falling below a certain limit value.
Die Durchblasgase gelangen gemäß dem Pfeil 33 sowie dem Pfeil 34 zunächst in den Zwischenraum zwischen den beiden Flächenteilen 12 und 13 des Elements 11, strömen von dort aus gemäß Pfeil 35 nach oben durch ein Vlies bzw. Ölabscheiderelement 36 hindurch zu dem Druckregelventil 23. Im Bereich des Vlieses 36 sowie unterhalb des Druckregelventils 23 sind Ablaufrohre 37, 38 vorgesehen. In diesen sammelt sich das abgeschiedene Öl. Ab einem bestimmten Füllstand öffnet sich ein am unteren Ende der Ablaufrohre angeordnetes Tellerventil 39, 40, so daß das im Ablaufrohr gesammelte Öl in die Kurbelwanne zurückfließen kann.According to arrow 33 and arrow 34, the blow-by gases first enter the space between the two surface parts 12 and 13 of element 11, and flow from there upward according to arrow 35 through a fleece or oil separator element 36 to pressure control valve 23. In the area the fleece 36 and below the pressure control valve 23 drain pipes 37, 38 are provided. The separated oil collects in these. As of a certain fill level, a poppet valve 39, 40 arranged at the lower end of the drain pipes opens so that the oil collected in the drain pipe can flow back into the crankcase.
Das Element 11 ist an bestimmten Positionen mit Prallplatten 41, 42 versehen. Diese haben die Aufgabe, ein besonders starkes Sprühen an bestimmten Stellen des Ventiltriebs zu unterbinden.The element 11 is provided with baffle plates 41, 42 at certain positions. These have the task of preventing particularly strong spraying at certain points on the valve train.
Figur 4 zeigt eine Draufsicht auf eine modifizierte Variante eines Druckregelventils 23. Bei diesem ist in der äußeren Kammer des Druckregelventils ein Fliehkraftabscheider vorgesehen. Das Durchblasgas strömt über die Öffnung 43 in den Fliehkraftabscheider, gelangt zu einer Engstelle 44, erfährt dort eine Geschwindigkeitserhöhung und gelangt anschließend über die Öffnung 45 in die innere Kammer 56 des Druckregelventils. Von dort verläßt es über die Öffnung 32 und den Anschlußstutzen 46 das Ventil. Das an der Außenwand 47 anhaftende Öl fließt über eine hier nicht dargestellte Ablaufbohrung in das Kurbelgehäuse zurück. oFIG. 4 shows a plan view of a modified variant of a pressure control valve 23. In this, a centrifugal separator is provided in the outer chamber of the pressure control valve. The blow-by gas flows through the opening 43 into the centrifugal separator, reaches a constriction 44, experiences a speed increase there and then passes through the opening 45 into the inner chamber 56 of the pressure control valve. From there it leaves the valve via the opening 32 and the connecting piece 46. The oil adhering to the outer wall 47 flows back into the crankcase via a drain hole, not shown here. O
Figur 5 zeigt die Integration eines Druckregelventils in die Außenkontur eines Ventilkammerdeckels. Im Ventilkammerdeckel ist lediglich eine einfache Prallplatte 57 angeordnet. Das Druckregelventil 23 besteht wiederum aus einem Gehäuse 24, einer Membran 25 sowie einer Druckfeder 26 und wird durch einen Deckel 48 verschlossen. Der Deckel 48 ist mit dem Gehäuse 24 über eine Rastverbindung 58 fixiert, die einzelnen Teile werden durch diese Rastverbindung positioniert. Das Druckregelventil ist ein Kompletteil und kann als Bauelement bereits vor Einbau in den Ventilkammerdeckel geprüft werden..Figure 5 shows the integration of a pressure control valve in the outer contour of a valve chamber cover. Only a simple baffle plate 57 is arranged in the valve chamber cover. The pressure control valve 23 in turn consists of a housing 24, a membrane 25 and a compression spring 26 and is closed by a cover 48. The cover 48 is fixed to the housing 24 via a snap connection 58, the individual parts are positioned by this snap connection. The pressure control valve is a complete part and can be tested as a component before it is installed in the valve chamber cover.
Es ist ersichtlich, daß diese Art der Anordnung eines Druckregelventils einen einfachen Einbau und auch einen einfachen Austausch ermöglicht. Außerdem ist das Ventil an die Außenstruktur des Ventilkammerdeckels anpaßbar und erfüllt damit die Forderung nach einer optimalen Formgebung bzw. an bestimmte Oberflächenstrukturen. It can be seen that this type of arrangement of a pressure control valve enables simple installation and also simple replacement. In addition, the valve can be adapted to the outer structure of the valve chamber cover and thus fulfills the requirement for an optimal shape or certain surface structures.

Claims

Patentansprüche claims
1. Brennkraftmaschine mit einem Ventilkammerdeckel, wobei in einem Ventilkammerdeckel (10) ein Druckregelventil (23) für Durchblasgase sowie ein aus thermoplastischem Kunststoff bestehendes Element (11) als Spritzschutz vorgesehen ist.1. Internal combustion engine with a valve chamber cover, wherein in a valve chamber cover (10) a pressure control valve (23) for blow-by gases and a thermoplastic element (11) is provided as a splash guard.
2. Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß das thermoplastische Element (11) wenigstens zwei parallel verlaufende und in zwei Ebenen sich erstreckende Flächenteile (12, 13) aufweist.2. Internal combustion engine according to claim 1, characterized in that the thermoplastic element (11) has at least two parallel and in two planes extending surface parts (12, 13).
3. Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß das Druckregelventil (23) in die Außenkontur des Ventilkammerdeckels (10) integriert ist.3. Internal combustion engine according to claim 1, characterized in that the pressure control valve (23) in the outer contour of the valve chamber cover (10) is integrated.
4. Brennkraftmaschine nach einem der folgenden Ansprüche, dadurch gekennzeichnet, daß dem Druckregelventil (23) ein Fliehkraftabscheider (56) vorgeschaltet ist.4. Internal combustion engine according to one of the following claims, characterized in that a centrifugal separator (56) is connected upstream of the pressure control valve (23).
5. Brennkraftmaschine nach Anspruch 4, dadurch gekennzeichnet, daß der Fliehkraftabscheider (56) sich um das Druckregelventil (23) erstreckt.5. Internal combustion engine according to claim 4, characterized in that the centrifugal separator (56) extends around the pressure control valve (23).
6. Brennkraftmaschine nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß dem Druckregelventil (23) ein Vlies (36) oder Filterelement zur Ölnebelabscheidung vorgeschaltet ist.6. Internal combustion engine according to one of the preceding claims, characterized in that the pressure control valve (23) is preceded by a fleece (36) or filter element for oil mist separation.
7. Brennkraftmaschine nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß dem Druckregelventil (23) Umlenkflächen bzw. Prallwände (18) vorgeschaltet sind.7. Internal combustion engine according to one of the preceding claims, characterized in that the pressure control valve (23) deflection surfaces or baffles (18) are connected upstream.
8. Brennkraftmaschine nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß im Bereich der Ölabscheiderelemente Ablaufrohre (37, 38) vorgesehen sind, welche an ihrem geodätisch unteren Ende mit jeweils einem Rückschlagventil (39, 40) versehen sind.8. Internal combustion engine according to one of the preceding claims, characterized in that in the area of the oil separator drain pipes (37, 38) are provided, which are provided at their geodetically lower end with a check valve (39, 40).
9. Brennkraftmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß im Bereich der Ölabscheiderelemente Ablaufrohre (37, 38) mit jeweils einem syphonartigen Auslauf vorgesehen sind. ιυ.j-srennκτaπmascnme mit einem Ventilkammerdeckel (10), wobei em j rucKregelelement9. Internal combustion engine according to one of claims 1 to 7, characterized in that drain pipes (37, 38) are provided in the region of the oil separator elements, each with a siphon-like outlet. ιυ.j-srennκτaπmascnme with a valve chamber cover (10), wherein em j rucK control element
(13) für Durchblasgase und/oder ein weiteres, aus thermoplastischem Kunststoff bestehendes Element an dem Ventilkammerdeckel angeordnet ist und in die Außenfläche des Ventilkammerdeckels (10) integriert ist.(13) for blow-by gases and / or another thermoplastic element is arranged on the valve chamber cover and is integrated into the outer surface of the valve chamber cover (10).
11.Brennkraftmaschme nach dem vorherigen Anspruch, dadurch gekennzeichnet, daß das Druckregelventil (23) oder das weitere Element in dem Ventilkammerdeckel eingerastet (49) oder eingeschnappt ist.11. internal combustion engine according to the preceding claim, characterized in that the pressure control valve (23) or the further element in the valve chamber cover is snapped (49) or snapped.
12.Brennkraftmaschine nach dem vorherigen Anspruch, dadurch gekennzeichnet, daß die Einzelteile (24, 25, 26) des Druckregelventils (23) oder des weiteren Bauteils aufgrund der Rast- oder Schnappverbindung (49) fixiert sind. 12. Internal combustion engine according to the preceding claim, characterized in that the individual parts (24, 25, 26) of the pressure control valve (23) or the further component are fixed due to the latching or snap connection (49).
PCT/EP1997/007304 1997-01-22 1997-12-24 Internal combustion engine with a valve chamber cap WO1998032955A1 (en)

Applications Claiming Priority (2)

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DE19701977.3 1997-01-22
DE1997101977 DE19701977B4 (en) 1997-01-22 1997-01-22 Internal combustion engine with a valve chamber cover

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6725849B2 (en) 2001-06-07 2004-04-27 Robert Bosch Gmbh Oil-separating device for crankcase gases in an internal combustion engine
DE102004041110A1 (en) * 2004-08-24 2006-03-02 Mahle Filtersysteme Gmbh Cylinder head cover for internal combustion engine used in motor vehicle, has oil return formed with return channel that is open to cylinder head in gravity force direction, and formed with larger flow resistance than channel exit
DE102008035850A1 (en) 2007-08-17 2009-02-19 Dichtungstechnik G. Bruss Gmbh & Co. Kg Oil return valve for crankcase ventilation
DE102010034615A1 (en) * 2010-08-18 2012-02-23 Gm Global Technology Operations Llc (N.D.Ges.D. Staates Delaware) Oil separator for separating engine oil from blow-by-gases of internal combustion engine of motor car, has V-shaped splitter arranged between inlet and outlet, and baffle plates arranged in flow direction opposite to sub-channel outputs
EP2818653A1 (en) 2013-06-25 2014-12-31 Dichtungstechnik G. Bruss GmbH & Co. KG Check valve for oil return in the crankcase ventilation system of an internal combustion engine
DE102016012711A1 (en) 2016-10-25 2018-04-26 Daimler Ag Filling device for an internal combustion engine, in particular a motor vehicle
US10247068B2 (en) 2013-06-25 2019-04-02 BRUSS Sealing Systems GmbH Oil separating module in the crankcase ventilation system of a combustion engine

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2789125B1 (en) * 1999-01-29 2001-11-09 Renault DEVICE FOR RESPIRATING THE CRANKCASE GASES OF AN ENGINE
JP3967552B2 (en) * 2001-02-19 2007-08-29 本田技研工業株式会社 Gas-liquid separator for engines
DE102004004753A1 (en) * 2004-01-30 2005-08-18 Mann + Hummel Gmbh Cylinder head cover
DE102004010585A1 (en) * 2004-03-02 2005-09-29 Ab Skf Cover a cylinder head of an internal combustion engine comprises an oil- removing unit with a filter arranged so that an oil-containing fluid flow is directed through the filter to remove the oil
DE102004014693A1 (en) * 2004-03-25 2005-10-13 Volkswagen Ag Pressure control valve for an internal combustion engine
DE202006010709U1 (en) * 2006-07-10 2007-11-22 Mann+Hummel Gmbh Cylinder head cover for an internal combustion engine
DE202006011992U1 (en) * 2006-08-03 2007-12-20 Mann + Hummel Gmbh Housing for a crankcase ventilation device
DE102010027787A1 (en) * 2010-04-15 2011-10-20 Hengst Gmbh & Co. Kg Oil mist separator for crank case ventilation device of internal-combustion engine, has separator housing, separation element arranged in housing and cover for removable closing of housing
DE102010043060B4 (en) * 2010-10-28 2013-12-05 Mtu Friedrichshafen Gmbh Crankcase and internal combustion engine
DE102010054347A1 (en) * 2010-12-13 2012-06-14 Mann + Hummel Gmbh Crankcase ventilation device for removal of oil-air mixture from crankcase of internal combustion engine, has non-return valves arranged in respective diverting apertures and clamped between separator plate and upper housing portion
DE202012005909U1 (en) * 2012-06-16 2013-06-17 Reinz-Dichtungs-Gmbh Cover system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326881A1 (en) * 1983-07-26 1984-05-24 Daimler-Benz Ag, 7000 Stuttgart Crankcase ventilation system for an internal combustion engine
EP0399912A1 (en) * 1989-05-25 1990-11-28 Lebranchu S.A. Valve cover with oil separator and method for producing same
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
US5129371A (en) * 1991-09-03 1992-07-14 Saturn Corporation Cam cover oil separator for crankcase ventilation
US5323740A (en) * 1993-07-13 1994-06-28 Saturn Corporation Molded dual cam cover

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3766898A (en) * 1971-10-21 1973-10-23 Gen Motors Corp Crankcase ventilation valve
DE3152747C2 (en) * 1981-07-18 1984-01-26 Bayerische Motoren Werke Ag, 8000 Muenchen Cyclone oil separator
JPS60237108A (en) * 1984-05-09 1985-11-26 Uchiyama Mfg Corp Oil baffle plate
US4602607A (en) * 1985-02-25 1986-07-29 General Motors Corporation Internal crankcase ventilation system with easily accessible PCV valve
JPH06229221A (en) * 1993-01-30 1994-08-16 Suzuki Motor Corp Blow-by gas circulating device
DE4404709C1 (en) * 1994-02-15 1995-06-08 Freudenberg Carl Fa Separator of liquid from liquid-bearing gas

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326881A1 (en) * 1983-07-26 1984-05-24 Daimler-Benz Ag, 7000 Stuttgart Crankcase ventilation system for an internal combustion engine
EP0399912A1 (en) * 1989-05-25 1990-11-28 Lebranchu S.A. Valve cover with oil separator and method for producing same
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
US5129371A (en) * 1991-09-03 1992-07-14 Saturn Corporation Cam cover oil separator for crankcase ventilation
US5323740A (en) * 1993-07-13 1994-06-28 Saturn Corporation Molded dual cam cover

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6725849B2 (en) 2001-06-07 2004-04-27 Robert Bosch Gmbh Oil-separating device for crankcase gases in an internal combustion engine
DE102004041110A1 (en) * 2004-08-24 2006-03-02 Mahle Filtersysteme Gmbh Cylinder head cover for internal combustion engine used in motor vehicle, has oil return formed with return channel that is open to cylinder head in gravity force direction, and formed with larger flow resistance than channel exit
DE102004041110B4 (en) * 2004-08-24 2018-12-20 Mahle Filtersysteme Gmbh Internal combustion engine and associated cylinder head cover
DE102008035850A1 (en) 2007-08-17 2009-02-19 Dichtungstechnik G. Bruss Gmbh & Co. Kg Oil return valve for crankcase ventilation
DE102010034615A1 (en) * 2010-08-18 2012-02-23 Gm Global Technology Operations Llc (N.D.Ges.D. Staates Delaware) Oil separator for separating engine oil from blow-by-gases of internal combustion engine of motor car, has V-shaped splitter arranged between inlet and outlet, and baffle plates arranged in flow direction opposite to sub-channel outputs
EP2818653A1 (en) 2013-06-25 2014-12-31 Dichtungstechnik G. Bruss GmbH & Co. KG Check valve for oil return in the crankcase ventilation system of an internal combustion engine
DE102013212104A1 (en) 2013-06-25 2015-01-08 Dichtungstechnik G. Bruss Gmbh & Co. Kg Check valve for an oil return in the crankcase breather of an internal combustion engine
US9416695B2 (en) 2013-06-25 2016-08-16 BRUSS Sealing Systems GmbH Non-return valve for an oil return in the crankcase ventilation system of a combustion engine
US10247068B2 (en) 2013-06-25 2019-04-02 BRUSS Sealing Systems GmbH Oil separating module in the crankcase ventilation system of a combustion engine
DE102013212104B4 (en) * 2013-06-25 2021-06-10 BRUSS Sealing Systems GmbH Cylinder head cover with check valve for an oil return in the crankcase ventilation of an internal combustion engine
DE102016012711A1 (en) 2016-10-25 2018-04-26 Daimler Ag Filling device for an internal combustion engine, in particular a motor vehicle

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