EP2375016B1 - Combustion engine - Google Patents
Combustion engine Download PDFInfo
- Publication number
- EP2375016B1 EP2375016B1 EP11161108.3A EP11161108A EP2375016B1 EP 2375016 B1 EP2375016 B1 EP 2375016B1 EP 11161108 A EP11161108 A EP 11161108A EP 2375016 B1 EP2375016 B1 EP 2375016B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- combustion engine
- fan wheel
- internal combustion
- engine according
- fan
- 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.)
- Not-in-force
Links
Images
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
-
- 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
- F01M2013/0422—Separating oil and gas with a centrifuge device
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Description
Die vorliegende Erfindung betrifft ein Lüfterrad für den Einsatz in einer Brennkraftmaschine. Die Erfindung betrifft außerdem eine Brennkraftmaschine mit einer Nockenwelle mit einem derartigen Lüfterrad.The present invention relates to a fan for use in an internal combustion engine. The invention also relates to an internal combustion engine having a camshaft with such a fan.
Beim Betrieb einer bekannten Brennkraftmaschine tritt üblicherweise bei der Kompression an den Kolbenringen Gas vom Arbeitsraum in ein Kurbelgehäuse aus. Selbst bei optimaler Abdichtung beträgt dieses sogenannte Blowby-Gas ca. 0,5 - 2 % des gesamten Gasvolumens. Aufgrund dieser unvermeidbaren Blowby-Gase ist eine Entlüftung des Kurbelgehäuses erforderlich, die üblicherweise im Luftfilter endet, so dass das Blowby-Gas beim nächsten Arbeitstakt der Brennkraftmaschine wieder angesaugt werden kann und so nicht direkt in die Umwelt gelangt. Durch die im Blowby-Gas enthaltenen Ölnebelpartikel wird aber insbesondere der Luftfilter stark belastet, so dass bereits bei der Absaugung der Blow-by-Gase darauf geachtet werden muss, dass möglichst wenig Ölnebelpartikel mit abgesaugt werden. Eine Entnahmestelle zur Entnahme der Blowby-Gase sollte aus diesem Grund derart positioniert werden, dass der Anteil an mitabgesaugtem Öl möglichst gering bleibt. Derartige Entnahmestellen können deshalb insbesondere im Bereich einer Zylinderkopfhaube angeordnet sein, wobei auch dort nicht gänzlich auszuschließen ist, dass unter verschärften Betriebsbedingungen, wie beispielsweise extremen Kurvenfahrten, Ölspritzer auftreten, die zu einer Ölbelastung der abgesaugten Blowby-Gase beitragen.
Dieses Problem wird erfindungsgemäß durch die Gegenstände der unabhängigen Ansprüche gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Ansprüche.This problem is solved according to the invention by the subject matters of the independent claims. Advantageous embodiments are the subject of the dependent claims.
Die vorliegende Erfindung beruht auf dem allgemeinen Gedanken, bei einer an sich bekannten Brennkraftmaschine mit einer sich in einem Kurbelgehäuse drehenden Nockenwelle auf dieser Nockenwelle ein Lüfterrad drehfest anzuordnen, das zudem ein spezielles Profil aufweist, mittels welchem bei Rotation der Nockenwelle und damit bei Rotation des Lüfterrades ein zumindest ölnebelreduzierter, vorzugsweise ölnebelfreier, radialer Korridor um das Lüfterrad herum entsteht, so dass im Bereich dieses Korridors ein Absaugstutzen zur Absaugung von Blowby-Gasen angeordnet werden kann und die dadurch abgesaugten Blowby-Gase im Vergleich zu einer herkömmlichen Absaugung einen deutlich geringeren Ölanteil aufweisen. Das Lüfterrad kann dabei als kostengünstiges Bauteil hergestellt werden und weist ein, einem Traktorreifen ähnliches Profil auf, welches bei Rotation der Nockenwelle den oben beschriebenen radialen und vorzugsweise ölnebenfreien Korridor erzeugt. Da sich die Nockenwelle beim Betrieb der Brennkraftmaschine stets dreht, dreht sich auch das erfindungsgemäße Lüfterrad stets mit, wobei der zumindest ölnebelreduzierte Korridor - in Umfang und Größe selbstverständlich abhängig von der Rotationsgeschwindigkeit der Nockenwelleimmer während des Betriebs der Brennkraftmaschine zur Verfügung steht. Durch das Absaugen des Blowby-Gas aus diesem Korridor lässt sich insbesondere die Ölbelastung eines nachgeschalteten Luftfilters deutlich verringern, wodurch damit im Zusammenhang stehende Wartungskosten reduziert werden können. Erfindungsgemäß weist das Lüfterrad ein mit einer Spitze in Drehrichtung gerichtetes V-förmiges Profil auf, wobei an einem freien Ende von das V-förmige bildenden Rippen jeweils ein in Drehrichtung orientierter Kragen angeordnet ist, der zusammen mit der jeweiligen Rippe eine Rinne bildet, in welcher das abgeschiedene Öl bzw. der abgeschiedene Ölnebel axial nach außen transportiert werden. Die durch den Kragen und die jeweils zugehörige Rippe gebildete Rinne weist dabei einen dreidimensionalen gekrümmten Verlauf auf, wobei das vom Lüfterrad abgeschiedene Öl aufgrund der rinnenartigen Ausbildung der Rippe und des zugehörigen Kragens axial und radial nach außen transportiert wird, wodurch der besagte erfindungsgemäße und zumindest ölreduzierte Korridor entsteht. Das Profil und/oder das gesamte Lüfterrad können dabei kostengünstig, beispielsweise aus Metall oder aus Kunststoff, insbesondere in Kunststoffspritzgusstechnik, ausgebildet sein, und entlang der Nockenwelle an einer für die Absaugung günstigen Stelle platziert werden. Die axiale Länge des Lüfterrades bestimmt dabei selbstverständlich auch die axiale Länge des durch dieses erzeugten Korridors.The present invention is based on the general idea, in a known per se internal combustion engine with rotating in a crankcase camshaft on this camshaft, a fan rotatably to arrange, which also has a special profile, by means of which during rotation of the camshaft and thus upon rotation of the fan an at least Ölnebelreduzierter, preferably oil mist-free, radial corridor around the fan around, so that in the range of this corridor a suction for sucking blowby gases can be arranged and thereby sucked blowby gases compared to a conventional extraction have a much lower oil content , The fan can be made as a low-cost component and has a, a tractor tire-like profile, which generates the above-described radial and preferably oil-free corridor upon rotation of the camshaft. Since the camshaft always rotates during operation of the internal combustion engine, the fan impeller according to the invention always rotates, wherein the at least oil mist reduced corridor - of course, depending on the rotational speed of the camshaft is available in the scope and size during operation of the internal combustion engine. By sucking the blow-by gas from this corridor, in particular the oil load of a downstream air filter can be significantly reduced, so that related maintenance costs can be reduced. According to the invention, the fan wheel has a V-shaped profile directed in the direction of rotation with a tip, wherein a collar oriented in the direction of rotation is arranged at a free end of the V-shaped ribs, forming a groove together with the respective rib, in which the separated oil or the separated oil mist are transported axially outward. The groove formed by the collar and the respective associated rib has In this case, a three-dimensional curved course, wherein the separated from the impeller oil is transported axially and radially outwardly due to the groove-like formation of the rib and the associated collar, whereby said inventive and at least oil-reduced corridor arises. The profile and / or the entire fan wheel can be inexpensively, for example, made of metal or plastic, in particular in plastic injection molding, be formed, and placed along the camshaft at a favorable location for the suction. Of course, the axial length of the fan wheel also determines the axial length of the corridor generated by this.
Bei einer weiteren vorteilhaften Ausführungsform der erfindungsgemäßen Lösung, ist eine Außenkontur des Lüfterrades an eine Kontur des Absaugstutzens zur Absaugung der Blowby-Gase angepasst, und/oder umgekehrt. Die Anpassung der Konturen des Lüfterrades, das heißt des Profils des Lüfterrades und des Absaugstutzens haben dabei einen entscheidenden Einfluss auf den Ölgehalt der abgesaugten Blowby-Gase, so dass ein möglichst geringer radialer Abstand zwischen dem Lüfterrad einerseits und dem Absaugstutzen andererseits den Ölgehalt des abgesaugten Blowby-Gases hilft zu reduzieren. Der Absaugstutzen kann dabei beispielsweise an einer Zylinderkopfhaube befestigt oder sogar vorzugsweise einstückig mit dieser ausgebildet, das heißt an diese angeformt, sein.In a further advantageous embodiment of the solution according to the invention, an outer contour of the fan wheel is adapted to a contour of the suction for sucking the blow-by gases, and / or vice versa. The adaptation of the contours of the impeller, that is, the profile of the impeller and the exhaust have a decisive influence on the oil content of the extracted blow-by gases, so that the smallest possible radial distance between the impeller on the one hand and the exhaust on the other hand, the oil content of the extracted Blowby -Gas helps reduce. The suction can be attached, for example, to a cylinder head cover or even preferably integrally formed with this, that is formed on this, be.
Selbstverständlich kann auch über die Ausbildung der einzelnen Rippen und der zugehörigen Kragen, beispielsweise deren Abstand zueinander und/oder deren Höhe Einfluss auf die Abscheidewirkung des Lüfterrades genommen werden.Of course, on the formation of the individual ribs and the associated collar, for example, their distance from each other and / or their height influence on the separation efficiency of the fan wheel are taken.
Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Other important features and advantages of the invention will become apparent from the dependent claims, from the drawings and from the associated figure description with reference to the drawings.
Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.
Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder ähnliche oder funktional gleiche Bauteile beziehen.Preferred embodiments of the invention are illustrated in the drawings and will be described in more detail in the following description, wherein like reference numerals refer to the same or similar or functionally identical components.
Dabei zeigen, jeweils schematisch
- Fig. 1
- eine erfindungsgemäße Brennkraftmaschine mit einem auf einer Nockenwelle angeordneten Lüfterrad,
- Fig. 2
- das erfindungsgemäße Lüfterrad in einer Axialansicht,
- Fig. 3
- das erfindungsgemäße Lüfterrad in einer Radialansicht.
- Fig. 1
- an internal combustion engine according to the invention with a fan arranged on a camshaft,
- Fig. 2
- the impeller according to the invention in an axial view,
- Fig. 3
- the fan according to the invention in a radial view.
Entsprechend der
Wie den
Wie insbesondere der
Zur drehfesten Verbindung des Lüfterrades 5 mit der Nockenwelle 3, kann das Lüfterrad 5 eine Mitnehmerkontur 12 aufweisen, welche mit einer entsprechend ausgeformten Mitnehmergegenkontur 13 (vgl.
Wie insbesondere den
Generell kann das erfindungsgemäße Lüfterrad 5 aus Metall oder aus Kunststoff, insbesondere als Kunststoffspritzgussteil ausgebildet und dadurch kostengünstig hergestellt werden. Selbstverständlich kann dabei der Luftabsaugstutzen 7 auch einen größeren Abstand zum erfindungsgemäßen Lüfterrad 5 aufweisen, wobei er jedoch stets innerhalb des vom Lüfterrad 5 bei einer Drehbewegung gebildeten ölnebelreduzierten Korridors 6 liegen sollte, um eine Ölbelastung für das nachgeschaltete und nicht gezeigte Luftfilter möglichst gering halten zu können. Der Absaugstutzen 7 überstreicht dabei gemäß der
Claims (8)
- Fan wheel (5) for use in an internal combustion engine (1), wherein the fan wheel (5) comprises a profile by means of which during rotation of the fan wheel (5) an at least oil mist reduced radial passage (6) is formed around the fan wheel (5), and wherein the fan wheel (5) comprises a v-shaped profile pointing with a tip (11) in a rotational direction (14), wherein a flange (9) oriented in a rotational direction (14) is arranged at a free end of ribs (8) forming the v-shaped profile, the flange forming together with the respective rib (8) a channel (10) in which separated oil can be transported axially outwardly.
- Internal combustion engine (1) with a crank case (2) and a cam shaft (3) rotating therein,- wherein a fan wheel (5) according to claim 1 is provided which is non-rotatably connected to the cam shaft (3),- wherein in the area of the passage (6) a suction nozzle (7) is provided for the extraction of blowby gases.
- Internal combustion engine according to claim 2,
characterized in that
the flange (9) extends only partially along the respective corresponding rib (8), preferably such that the ribs (8) do not comprise a flange (9) in a contact area with another rib (8). - Internal combustion engine according to claim 2 or 3,
characterized in that
the cross-section of the channel (10) formed by the ribs (8) and the corresponding flange (9) changes, in particular tapers or expands outwardly. - Internal combustion engine according to any of claims 2 to 4,
characterized in that
the fan wheel (5) comprises a retaining contour (12) which interacts with a counter retaining contour (13) at the cam shaft (3). - Internal combustion engine according to at least claim 5,
characterized in that
the retaining contour (12) and counter retaining contour (13) are formed such that the fan wheel (5) can be slid onto the cam shaft (3) in the axial direction. - Internal combustion engine according to any of claims 2 to 6,
characterized in that
the fan wheel (5) has a smaller diameter in the center than at the edge. - Internal combustion engine according to at least any of claims 2 to 7,
characterized in that
an outer contour of the fan wheel (5) is conformed with a contour of the suction nozzle (7).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010014546A DE102010014546A1 (en) | 2010-04-10 | 2010-04-10 | Internal combustion engine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2375016A2 EP2375016A2 (en) | 2011-10-12 |
EP2375016A3 EP2375016A3 (en) | 2014-01-01 |
EP2375016B1 true EP2375016B1 (en) | 2017-06-28 |
Family
ID=44202273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11161108.3A Not-in-force EP2375016B1 (en) | 2010-04-10 | 2011-04-05 | Combustion engine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2375016B1 (en) |
DE (1) | DE102010014546A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112267922A (en) * | 2020-09-28 | 2021-01-26 | 中国北方发动机研究所(天津) | Camshaft for vertical axis structure diesel engine |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
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FR1590886A (en) * | 1968-11-06 | 1970-04-20 | ||
GB1508212A (en) * | 1975-02-10 | 1978-04-19 | Rolls Royce | Apparatus for separating suspension of liquids in gas |
JPS572411A (en) * | 1980-06-06 | 1982-01-07 | Yamaha Motor Co Ltd | Oil separator for blow-by gas |
JPS575905U (en) * | 1980-06-11 | 1982-01-12 | ||
JPH04153514A (en) * | 1990-10-17 | 1992-05-27 | Toyota Autom Loom Works Ltd | Oil separator for blow-by gas |
JPH07150924A (en) * | 1993-12-01 | 1995-06-13 | Nissan Motor Co Ltd | Oil separator for blow-by gas |
JPH08284634A (en) * | 1995-04-07 | 1996-10-29 | Suzuki Motor Corp | Gas-liquid separation device for blow-by gas |
DE19607919B4 (en) * | 1996-03-01 | 2005-03-17 | Bayerische Motoren Werke Ag | Centrifugal oil separator for the blow-by gases of an internal combustion engine |
DE19931740C2 (en) * | 1999-07-08 | 2001-06-13 | Daimler Chrysler Ag | Reciprocating internal combustion engine with a camshaft |
FR2804477B1 (en) * | 2000-01-28 | 2002-04-12 | Renault Vehicules Ind | DEVICE FOR EXHAUSTING GAS FROM THE HOUSING OF AN INTERNAL COMBUSTION ENGINE |
CA2434861A1 (en) * | 2000-09-01 | 2002-03-07 | Norbert Korenjak | Continuously variable transmission for an internal combustion engine |
JP5000419B2 (en) * | 2006-08-16 | 2012-08-15 | 富士重工業株式会社 | Engine breather equipment |
JP2009121341A (en) * | 2007-11-14 | 2009-06-04 | Toyota Boshoku Corp | Crank room ventilation system |
JP2009174434A (en) * | 2008-01-24 | 2009-08-06 | Toyota Motor Corp | Oil blow-back suppression mechanism |
JP2009222044A (en) * | 2008-03-19 | 2009-10-01 | Nissan Motor Co Ltd | Blow-by gas treatment device |
US8075655B2 (en) * | 2008-06-17 | 2011-12-13 | Cummins Filtration Ip, Inc. | Rotative inertial impactor gas-oil separator for internal combustion engine |
-
2010
- 2010-04-10 DE DE102010014546A patent/DE102010014546A1/en not_active Withdrawn
-
2011
- 2011-04-05 EP EP11161108.3A patent/EP2375016B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
DE102010014546A1 (en) | 2011-10-13 |
EP2375016A2 (en) | 2011-10-12 |
EP2375016A3 (en) | 2014-01-01 |
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Inventor name: GRAU, ANDREAS Inventor name: GOERLICH, LESZEK Inventor name: RIEGER, HARALD Inventor name: BROMBACH, BENJAMIN Inventor name: SAUTER, DR., HARTMUT Inventor name: AMMON, EDGAR Inventor name: OEZKAYA, YAKUB Inventor name: RUPPEL, STEFAN |
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