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EP2711533B1 - Combustion engine - Google Patents

Combustion engine Download PDF

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Publication number
EP2711533B1
EP2711533B1 EP13182305.6A EP13182305A EP2711533B1 EP 2711533 B1 EP2711533 B1 EP 2711533B1 EP 13182305 A EP13182305 A EP 13182305A EP 2711533 B1 EP2711533 B1 EP 2711533B1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
outlet
plenum chamber
combustion engine
internal combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13182305.6A
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German (de)
French (fr)
Other versions
EP2711533A1 (en
Inventor
Rainer Düngen
Stefan Ritter
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Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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Publication of EP2711533A1 publication Critical patent/EP2711533A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/44—Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F02M35/112—Intake manifolds for engines with cylinders all in one line

Definitions

  • the present invention relates to an internal combustion engine having an engine block, a cylinder head, in which intake passages are provided, which direct air from intake ports of the cylinder head to exhaust ports of the cylinder head, which air flows in a flow direction from the intake ports through the intake ports to the exhaust ports.
  • the unfiltered unfiltered air is drawn in via an intake manifold (air manifold, intake manifold, intake manifold, individual conduits) which generally has a central conduit leading from the air intake on the unfiltered air side via a filter element which directs filtered clean air to an intake manifold.
  • intake manifold air manifold, intake manifold, intake manifold, individual conduits
  • the common line is distributed in individual lines. Each of these individual lines leads to an inlet channel, which is provided in the cylinder head.
  • the number of individual lines depends on the number of cylinders of the engine or cylinder head used. Such suction pipes thus have a central inlet and 2, 3, 4, 5, 6, or 8 outlets, with associated individual lines. In naturally aspirated engines, the length and diameter of this single line are meticulously tuned to one or more load / speed points to support the charge cycle. In the turbocharged engine, however, this is not the case, as short as possible tubes with low flow losses are required.
  • Today's intake manifolds used in supercharged engines include, as in naturally aspirated engines, a main pipe from which the feeders to the intake ports in the cylinder head branch off in the form of the single cables described. These supply channels are individually flanged to the cylinder head and sealed with a single seal or one or more multiple seals (gaskets). In order to achieve the most uniform possible distribution of the air mass flow to the individual cylinders, the intake manifold volume should be as large as possible for leveling and buffering the pressure fluctuations due to the rhythmic opening of the inlet valves.
  • the installation space between the individual air supply lines can not be used by the package.
  • the total intake pipe length includes the length of the feeding single pipe as well as the length of the intake port into the cylinder head, both lengths together resulting in the entire intake pipe length.
  • the main pipe is far from the engine block and must often be constricted because of package overlaps, for example, with components of the steering. This reduces the volume of the intake tract and leads to flow losses. The flow losses result in a poorer degree of filling of the cylinder and thus reduce the performance of the internal combustion engine.
  • the FR 2 907 514 shows an air distributor for an internal combustion engine of a motor vehicle, comprising a housing which is adapted to be attached to a cylinder head and which defines a plurality of suitable openings for distributing the air to the combustion chambers of the engine, wherein the openings formed on an insert and wherein the insert is insertable into a suitable recess of the housing.
  • a charge air housing made of plastic for motor vehicle engines which has an upper half of the housing made of plastic.
  • a lower housing half, which is also made of plastic, is connected to the upper half of the housing by welding.
  • a module for mixing two gas streams of a heat exchanger for an internal combustion engine is known.
  • the module For heat exchange with a first gas flow G, the module comprises a multiplicity of first conduction layers and a plurality of second diffusion layers of a second gas flow H.
  • the pamphlets EP0969199A2 and US2005 / 0133009A1 show open air collector, whose outlet is arranged at the inlet openings of the cylinder head and encloses a plurality of inlet openings. These documents show naturally aspirated engines, that is engines without pressure generating means upstream of the air collector.
  • the invention proposes an internal combustion engine with an engine block, a cylinder head, in which inlet channels are provided, which direct air from the inlet openings on the cylinder head to exhaust ports of the cylinder head.
  • the exhaust ports of the cylinder head are simultaneously intake ports into the combustion chamber and can be opened and closed by means of intake valves. The air flows in a flow direction from the intake ports through the intake ports to the intake valves.
  • the internal combustion engine has an air collector with an inlet and an outlet, wherein the air collector is arranged directly on the cylinder head, thus using the space otherwise lost between the individual lines.
  • the outlet of the air collector may be arranged at the inlet openings of the cylinder head, wherein the outlet comprises a plurality of inlet openings.
  • the outlet of the air collector may be limited by a circumferential wall having an end face, wherein the air collector is arranged on the cylinder head, that it the cylinder head with the end face the surrounding wall immediately touched.
  • a single circumferential seal can be arranged on the front side of the air collector.
  • a single large cord seal instead of four individual seals can be used, which reduces the assembly effort and the number of parts.
  • the internal combustion engine may be provided in its intake in the direction of flow of air in front of the air collector, a pressure generator.
  • a pressure generating device for example a turbine of an exhaust gas turbocharger or a compressor o. ⁇ . Be provided, which increase the pressure in the unfiltered air upstream of the air collector.
  • the inventive arrangement of an air collector directly to an internal combustion engine has particularly great advantages in supercharged internal combustion engines. Although the advantages according to the invention with turbocharged engines are particularly effective, the invention is also suitable for naturally aspirated engines. By using the air collector, the flow resistance is minimized and at the same time less space taken up by the engine.
  • the air collector may have a substantially tubular main pipe section and a substantially box-shaped, one-sided open outlet section.
  • the air collector with its outlet on one side of the cylinder head, on which the inlet openings are provided, be bolted to the cylinder head.
  • the intake ports of the cylinder head may open into the outlet of the air collector, and air from the outlet of the air collector may flow directly into the intake ports of the intake ports.
  • a section through an internal combustion engine 10 is shown having an engine block 12 in which a piston 16 is arranged to be intermittently movable.
  • the piston 16 is connected via a connecting rod 17 with a crankshaft, not shown in operative connection.
  • a cylinder head 11 is arranged, the inlet channels 15 has.
  • Each cylinder of the internal combustion engine 10 may include one or more inlet channels 15.
  • the inlet channels 15 connect an inlet opening 15a to an outlet opening 15b.
  • the outlet opening 15 b simultaneously constitutes an inlet into the combustion chamber 30 and can be closed by means of an inlet valve 14.
  • Fig. 1 shown on the right side are exhaust ports which are also provided in the cylinder head 11 and which can be closed with exhaust valves 13.
  • an air collector 20 is provided directly to the cylinder head 11.
  • FIG Fig. 2 A perspective view of the air collector 20 is shown in FIG Fig. 2 shown.
  • This has an inlet 21 with a main pipe section 22.
  • the main pipe section 22 connects the inlet 21 with a substantially box-shaped, one-sided open outlet section 26.
  • the outlet section 26 comprises an inner chamber 23, through which the sucked air is directed from the intake before It is sucked into the cylinder head 11.
  • the chamber 23 is surrounded by a wall which also encloses an outlet opening 25.
  • the air collector 20 is half-shell-shaped.
  • the wall which forms the outlet opening 25 has an end face 24 which encloses the opening or the outlet 25. This end face 24 is parallel to the cross-sectional area of the outlet 25.
  • FIGS FIG. 2 the inlet openings 15a shown in phantom. All inlet openings 15a of the inlet channels 15 thus open side by side into the air collector 20 into the outlet 25 of the air collector 20.
  • Fig. 3 is an exploded view showing the cylinder head 11, with arranged thereon air collector 20th Fig. 3 shows the back of the air collector 20 so that it faces the inlet openings 15a of the inlet channels 15 in the cylinder head 11 with its outlet opening 25.
  • the entire intake system can zoom closer by the inventive intake manifold in the form of an air collector 20 to the cylinder head 11, since he can use the space between the supply lines as an active volume compared to a cylinder head of a conventional intake system. This results in a larger total volume of the air intake tract realized, at the same time lesser expansion of space requirements. Package conflicts can be avoided. Last but not least, the cost of parts and the effort in tool design, for the production of the intake system is reduced due to the simpler geometric shape of the air collector 20. In addition, the weight of the engine is reduced, since both the cylinder head side portion of the intake system is reduced in weight, as well Cylinder head are larger by the drawn into the side wall inlet duct entries.

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

Description

Die vorliegende Erfindung betrifft einen Verbrennungsmotor mit einem Motorblock, einem Zylinderkopf, in dem Einlasskanäle vorgesehen sind, die Luft von Einlassöffnungen des Zylinderkopfs zu Auslassöffnungen des Zylinderkopfs leiten, wobei diese Luft in einer Strömungsrichtung von den Einlassöffnungen durch die Einlasskanäle zu den Auslassöffnungen strömt.The present invention relates to an internal combustion engine having an engine block, a cylinder head, in which intake passages are provided, which direct air from intake ports of the cylinder head to exhaust ports of the cylinder head, which air flows in a flow direction from the intake ports through the intake ports to the exhaust ports.

Im heutigen Kraftfahrzeugbau werden Verbrennungsmotoren verwendet, die nach dem Otto-Prinzip oder nach dem Diesel-Prinzip funktionieren und dabei aus der Umgebung angesaugte Luft mit Treibstoff vermischen und verbrennen. Die im Treibstoff gespeicherte Energie wird in mechanische Arbeit umgewandelt, die für den Vortrieb des Kraftfahrzeugs sorgt. Von den Verbrennungsmotoren wird die ungefilterte Rohluft über einen Ansaugtrakt (Luftsammler, Saugrohr, Ansaugkrümmer, Einzelleitungen) angesaugt, der im Allgemeinen eine zentrale Leitung aufweist, die von dem Lufteinlass auf der Rohluftseite über ein Filterelement, die gefilterte Reinluft zu einem Ansaugkrümmer leitet. In dem Ansaugkrümmer verteilt sich die gemeinsame Leitung in einzelne Leitungen. Jede dieser Einzelleitungen führt zu je einem Einlasskanal, der im Zylinderkopf vorgesehen ist. Die Anzahl der einzelnen Leitungen richtet sich nach der Anzahl der Zylinder des verwendeten Motors oder Zylinderkopfes. Solche Saugrohre haben folglich einen zentralen Einlass und 2, 3, 4, 5, 6, oder 8 Auslässe, mit dazugehörenden Einzelleitungen. Bei Saugmotoren wird Länge und Durchmesser dieser Einzelleitung zur Unterstützung der Ladungswechselbewegung akribisch auf einen oder mehrere Last/Drehzahlpunkte abgestimmt. Beim aufgeladenen Motor dagegen gilt dies nicht, hier sind möglichst kurze Rohre mit geringen Strömungsverlusten erforderlich.In today's motor vehicle combustion engines are used, which operate on the Otto principle or according to the diesel principle and thereby mix from the environment sucked air with fuel and burn. The stored energy in the fuel is converted into mechanical work, which provides for the propulsion of the motor vehicle. From the internal combustion engines, the unfiltered unfiltered air is drawn in via an intake manifold (air manifold, intake manifold, intake manifold, individual conduits) which generally has a central conduit leading from the air intake on the unfiltered air side via a filter element which directs filtered clean air to an intake manifold. In the intake manifold, the common line is distributed in individual lines. Each of these individual lines leads to an inlet channel, which is provided in the cylinder head. The number of individual lines depends on the number of cylinders of the engine or cylinder head used. Such suction pipes thus have a central inlet and 2, 3, 4, 5, 6, or 8 outlets, with associated individual lines. In naturally aspirated engines, the length and diameter of this single line are meticulously tuned to one or more load / speed points to support the charge cycle. In the turbocharged engine, however, this is not the case, as short as possible tubes with low flow losses are required.

Heutige Saugrohre die bei aufgeladenen Motoren verwendet werden, umfassen wie bei Saugmotoren ein Hauptrohr, von dem die Zuführungen zu den Einlasskanälen im Zylinderkopf in Form der beschriebenen Einzelleitungen abzweigen. Diese Zufuhrkanäle sind einzeln an den Zylinderkopf geflanscht und mit je einer Einzeldichtung oder einer oder mehreren Mehrfachdichtungen (Dichtungsbrillen) abgedichtet. Um eine möglichst gleichmäßige Verteilung des Luftmassenstroms auf die einzelnen Zylinder zu realisieren sollte das Saugrohrvolumen zur Egalisierung und Abpufferung der Druckschwankungen durch das rhythmische Öffnen der Einlassventile möglichst groß sein.Today's intake manifolds used in supercharged engines include, as in naturally aspirated engines, a main pipe from which the feeders to the intake ports in the cylinder head branch off in the form of the single cables described. These supply channels are individually flanged to the cylinder head and sealed with a single seal or one or more multiple seals (gaskets). In order to achieve the most uniform possible distribution of the air mass flow to the individual cylinders, the intake manifold volume should be as large as possible for leveling and buffering the pressure fluctuations due to the rhythmic opening of the inlet valves.

Der Bauraum zwischen den Luft zuführenden Einzelleitungen kann seitens des Package nicht genutzt werden. Die gesamte Saugrohrlänge umfasst die Länge der zuführenden Einzelleitung sowie die Länge des Einlasskanals in den Zylinderkopf, beide Längen gemeinsam ergeben die gesamte Saugrohrlänge. Zur Vermeidung von Strömungsverlusten sind beim Übergang der zuführenden Einzelleitungen zu den Einlasskanälen besonders glatte Übergänge erforderlich was durch hohe Passgenauigkeit beider Bauteile erreicht werden muss. Das Hauptrohr steht weit vom Motorblock ab und muss wegen Packageüberschneidungen, beispielsweise mit Bauteilen der Lenkung, oft eingeschnürt werden. Dies reduziert das Volumen des Ansaugtrakts und führt zu Strömungsverlusten. Die Strömungsverluste resultieren in einem schlechteren Füllungsgrad des Zylinders und verringern damit die Leistung des Verbrennungsmotors.The installation space between the individual air supply lines can not be used by the package. The total intake pipe length includes the length of the feeding single pipe as well as the length of the intake port into the cylinder head, both lengths together resulting in the entire intake pipe length. To avoid flow losses particularly smooth transitions are required when passing the feeding individual lines to the inlet channels which must be achieved by high accuracy of fit of both components. The main pipe is far from the engine block and must often be constricted because of package overlaps, for example, with components of the steering. This reduces the volume of the intake tract and leads to flow losses. The flow losses result in a poorer degree of filling of the cylinder and thus reduce the performance of the internal combustion engine.

Die FR 2 907 514 zeigt einen Luftverteiler für einen Verbrennungsmotor eines Kraftfahrzeuges, der ein Gehäuse umfasst, das dazu geeignet ist, an einem Zylinderkopf befestigt zu werden und das eine Mehrzahl von geeigneten Öffnungen zur Verteilung der Luft auf die Verbrennungskammern des Motors definiert, wobei die Öffnungen auf einem Einsatz ausgebildet sind und wobei der Einsatz in eine geeignete Ausnehmung des Gehäuses einbringbar ist.The FR 2 907 514 shows an air distributor for an internal combustion engine of a motor vehicle, comprising a housing which is adapted to be attached to a cylinder head and which defines a plurality of suitable openings for distributing the air to the combustion chambers of the engine, wherein the openings formed on an insert and wherein the insert is insertable into a suitable recess of the housing.

Aus der DE 10 2009 019 748 A1 ist ein Ladeluftgehäuse aus Kunststoff für Kraftfahrzeugmotoren bekannt, das eine obere Gehäusehälfte aus Kunststoff aufweist. Eine untere Gehäusehälfte, die ebenfalls aus Kunststoff hergestellt ist, ist mit der oberen Gehäusehälfte durch Verschweißen verbunden.From the DE 10 2009 019 748 A1 a charge air housing made of plastic for motor vehicle engines is known which has an upper half of the housing made of plastic. A lower housing half, which is also made of plastic, is connected to the upper half of the housing by welding.

Aus der EP 2 169 208 A1 ist ein Modul zum Mischen zweier Gasströme eines Wärmetauschers für einen Verbrennungsmotor bekannt. Zum Wärmeaustausch mit einem ersten Gasstrom G umfasst das Modul eine Vielzahl erster Leitungsschichten und eine Vielzahl zweiter Diffusionsschichten eines zweiten Gasstroms H.From the EP 2 169 208 A1 a module for mixing two gas streams of a heat exchanger for an internal combustion engine is known. For heat exchange with a first gas flow G, the module comprises a multiplicity of first conduction layers and a plurality of second diffusion layers of a second gas flow H.

Die Druckschriften EP0969199A2 und US2005/0133009A1 zeigen offene Luftsammler, deren Auslass an den Einlassöffnungen des Zylinderkopfs angeordnet ist und mehrere Einlassöffnungen umschließt. Diese Dokumente zeigen Saugmotoren, das heißt Motoren ohne Druckerzeugungseinrichtung stromauf des Luftsammlers.The pamphlets EP0969199A2 and US2005 / 0133009A1 show open air collector, whose outlet is arranged at the inlet openings of the cylinder head and encloses a plurality of inlet openings. These documents show naturally aspirated engines, that is engines without pressure generating means upstream of the air collector.

Ausgehend von diesem Stand der Technik macht es sich die vorliegende Erfindung zur Aufgabe, eine vereinfachte Vorrichtung anzugeben, mit der die Nachteile des Standes der Technik überwunden werden und bessere Füllungsgrade der Zylinder erreicht werden. Ferner ist es Aufgabe der Erfindung, einen Verbrennungsmotor anzugeben, mit niedrigem Bauraumbedarf.Starting from this prior art, it is the object of the present invention to provide a simplified device with which the disadvantages of the prior art are overcome and better fill levels of the cylinders are achieved. It is another object of the invention to provide an internal combustion engine, with low space requirement.

Zur Lösung dieser Aufgabe schlägt die Erfindung einen Verbrennungsmotor vor, mit einem Motorblock, einem Zylinderkopf, in dem Einlasskanäle vorgesehen sind, die Luft von den Einlassöffnungen am Zylinderkopf zu Auslassöffnungen des Zylinderkopfs leiten. Die Auslassöffnungen des Zylinderkopfs sind gleichzeitig Einlassöffnungen in den Brennraum und können mit Hilfe von Einlassventilen geöffnet und verschlossen werden. Die Luft strömt in einer Strömungsrichtung von den Einlassöffnungen durch die Einlasskanäle zu den Einlassventilen. Zusätzlich weist der Verbrennungsmotor einen Luftsammler mit einem Einlass und einem Auslass auf, wobei der Luftsammler unmittelbar an dem Zylinderkopf angeordnet ist und so den sonst zwischen den Einzelleitungen verlorenen Raum mit benutzt. Es erfolgt also ein direkter Übertritt der Luft vom Luftsammler in die Einlasskanäle des Zylinderkopfes ohne dazwischengeschaltete Einzelleitungen womit die für einen aufgeladenen Motor zielgerichteten möglichst kurzen Einlasskanäle möglich werden.To achieve this object, the invention proposes an internal combustion engine with an engine block, a cylinder head, in which inlet channels are provided, which direct air from the inlet openings on the cylinder head to exhaust ports of the cylinder head. The exhaust ports of the cylinder head are simultaneously intake ports into the combustion chamber and can be opened and closed by means of intake valves. The air flows in a flow direction from the intake ports through the intake ports to the intake valves. In addition, the internal combustion engine has an air collector with an inlet and an outlet, wherein the air collector is arranged directly on the cylinder head, thus using the space otherwise lost between the individual lines. Thus, there is a direct transfer of air from the air collector in the intake ports of the cylinder head without interposed single lines with which the targeted for a supercharged engine shortest possible intake ports are possible.

Darüber hinaus kann der Auslass des Luftsammlers an den Einlassöffnungen des Zylinderkopfs angeordnet sein, wobei der Auslass mehrere Einlassöffnungen umfasst. Vorteilhafterweise kann dadurch am Zylinderkopf die Einströmgeometrie der Einlassöffnungen zu den Einlasskanälen mit größeren Freiheitsgraden zur Darstellung einer optimierten, verlustfreieren Einströmung in den Einlasskanal gestaltet werden, da die gesamte von dem Auslass des Luftsammlers abgedeckte Seitenfläche des Zylinderkopfes dazu verwendet werden kann.
Der Auslass des Luftsammlers kann durch eine umlaufende Wandung begrenzt sein, die eine Stirnfläche aufweist, wobei der Luftsammler derart an dem Zylinderkopf angeordnet ist, dass er den Zylinderkopf mit der Stirnfläche der umlaufenden Wandung unmittelbar berührt. Durch Ausbildung des Ansaugrohres als Luftsammler kann ein besonders platzsparender Aufbau realisiert werden. Der so geschaffene Bauraum kann für andere Aggregate verwendet werden.In addition, the outlet of the air collector may be arranged at the inlet openings of the cylinder head, wherein the outlet comprises a plurality of inlet openings. Advantageously, this makes it possible to design the inflow geometry of the inlet openings to the inlet channels with greater degrees of freedom on the cylinder head in order to present an optimized, loss-free inflow into the inlet channel, since the entire side surface of the cylinder head covered by the outlet of the air collector can be used for this purpose.
The outlet of the air collector may be limited by a circumferential wall having an end face, wherein the air collector is arranged on the cylinder head, that it the cylinder head with the end face the surrounding wall immediately touched. By forming the intake manifold as an air collector, a particularly space-saving design can be realized. The space created in this way can be used for other units.

Weiterhin kann an der Stirnseite des Luftsammlers eine einzige umlaufende Dichtung angeordnet sein. Dadurch kann eine einzige große Schnurdichtung statt vier Einzeldichtungen verwendet werden, wodurch sich der Montageaufwand und die Teileanzahl reduziert.Furthermore, a single circumferential seal can be arranged on the front side of the air collector. As a result, a single large cord seal instead of four individual seals can be used, which reduces the assembly effort and the number of parts.

Zusätzlich kann der Verbrennungsmotor in seinem Ansaugtrakt in Strömungsrichtung der Luft vor dem Luftsammler eine Druckerzeugungseinrichtung vorgesehen sein. Mit anderen Worten kann stromaufwärts des Luftsammlers eine Druckerzeugungseinrichtung, beispielsweise eine Turbine eines Abgasturboladers oder ein Kompressor o. ä. vorgesehen sein, welche den Druck in der Rohluft erhöhen. Die erfindungsgemäße Anordnung eines Luftsammlers unmittelbar an einem Verbrennungsmotors birgt besonders große Vorteile, bei aufgeladenen Verbrennungsmotoren. Obwohl die erfindungsgemäßen Vorteile bei aufgeladenen Motoren besonders gut zum Tragen kommen, ist die Erfindung auch für Saugmotoren geeignet. Durch die Verwendung des Luftsammlers wird der Strömungswiderstand minimiert und gleichzeitig weniger Bauraum durch den Motor beansprucht.In addition, the internal combustion engine may be provided in its intake in the direction of flow of air in front of the air collector, a pressure generator. In other words, a pressure generating device, for example a turbine of an exhaust gas turbocharger or a compressor o. Ä. Be provided, which increase the pressure in the unfiltered air upstream of the air collector. The inventive arrangement of an air collector directly to an internal combustion engine has particularly great advantages in supercharged internal combustion engines. Although the advantages according to the invention with turbocharged engines are particularly effective, the invention is also suitable for naturally aspirated engines. By using the air collector, the flow resistance is minimized and at the same time less space taken up by the engine.

Darüber hinaus kann der Luftsammler einen im Wesentlichen rohrförmig ausgebildeten Hauptrohrabschnitt und einen im Wesentlichen kastenförmigen, einseitig offenen Auslassabschnitt aufweisen.In addition, the air collector may have a substantially tubular main pipe section and a substantially box-shaped, one-sided open outlet section.

Weiterhin kann der Luftsammler mit seinem Auslass auf einer Seite des Zylinderkopfs, auf der die Einlassöffnungen vorgesehen sind, mit dem Zylinderkopf verschraubt sein.Furthermore, the air collector with its outlet on one side of the cylinder head, on which the inlet openings are provided, be bolted to the cylinder head.

Darüber hinaus können die Einlassöffnungen des Zylinderkopfs in den Ausdes Luftsammlers münden, wobei Luft aus dem Auslass des Luftsammlers unmittelbar in die Einlassöffnungen der Einlasskanälen strömen kann.Moreover, the intake ports of the cylinder head may open into the outlet of the air collector, and air from the outlet of the air collector may flow directly into the intake ports of the intake ports.

Im Folgenden wird die Erfindung anhand der Figurenbeschreibung näher erläutert. Die Ansprüche, die Figuren und die Beschreibung enthalten eine Vielzahl von Merkmalen, die im Folgenden im Zusammenhang mit beispielhaft beschriebenen Ausführungsformen der vorliegenden Erfindung erläutert werden. Der Fachmann wird diese Merkmale auch einzeln und in anderen Kombinationen betrachten, um weitere Ausführungsformen zu bilden, die an entsprechende Anwendungen der Erfindung angepasst sind.The invention is explained in more detail below with reference to the description of the figures. The claims, the figures, and the description include a variety of features that will be discussed below in conjunction with exemplary embodiments of the present invention. The person skilled in the art will also consider these features individually and in other combinations to form further embodiments that are adapted to corresponding applications of the invention.

Es zeigen in schematischer Darstellung:

Fig. 1
eine Schnittansicht durch einen Verbrennungsmotor,
Fig. 2
eine perspektivische Ansicht eines Luftsammlers und
Fig. 3
eine Explosionsansicht eines Zylinderkopfs mit daran angeordnetem Luftsammler
In a schematic representation:
Fig. 1
a sectional view through an internal combustion engine,
Fig. 2
a perspective view of an air collector and
Fig. 3
an exploded view of a cylinder head with arranged air collector

In Fig. 1 ist ein Schnitt durch einen Verbrennungsmotor 10 dargestellt, der einen Motorblock 12 aufweist, in dem ein Kolben 16 intermittierend beweglich angeordnet ist. Der Kolben 16 steht über ein Pleuel 17 mit einer nicht dargestellten Kurbelwelle in Wirkverbindung. Im oberen Bereich des Motorblocks 12 ist ein Zylinderkopf 11 angeordnet, der Einlasskanäle 15 aufweist. Jeder Zylinder des Verbrennungsmotors 10 kann einen oder mehrere Einlasskanäle 15 aufweisen. Die Einlasskanäle 15 verbinden eine Einlassöffnung 15a mit einer Auslassöffnung 15b. Die Auslassöffnung 15b stellt gleichzeitig einen Einlass in den Verbrennungsraum 30 dar und ist mit Hilfe eines Einlassventils 14 verschließbar. In Fig. 1 rechtsseitig dargestellt sind Auslasskanäle die ebenfalls im Zylinderkopf 11 vorgesehen sind und die mit Auslassventilen 13 verschließbar sind. Linksseitig in Fig. 1 ist unmittelbar an dem Zylinderkopf 11 ein Luftsammler 20 vorgesehen.In Fig. 1 a section through an internal combustion engine 10 is shown having an engine block 12 in which a piston 16 is arranged to be intermittently movable. The piston 16 is connected via a connecting rod 17 with a crankshaft, not shown in operative connection. In the upper region of the engine block 12, a cylinder head 11 is arranged, the inlet channels 15 has. Each cylinder of the internal combustion engine 10 may include one or more inlet channels 15. The inlet channels 15 connect an inlet opening 15a to an outlet opening 15b. The outlet opening 15 b simultaneously constitutes an inlet into the combustion chamber 30 and can be closed by means of an inlet valve 14. In Fig. 1 shown on the right side are exhaust ports which are also provided in the cylinder head 11 and which can be closed with exhaust valves 13. Left side in Fig. 1 an air collector 20 is provided directly to the cylinder head 11.

Eine perspektivische Ansicht des Luftsammlers 20 ist in Fig. 2 dargestellt. Dieser weist einen Einlass 21 auf mit einem Hauptrohrabschnitt 22. Der Hauptrohrabschnitt 22 verbindet den Einlass 21 mit einem im Wesentlichen kastenförmigen, einseitigen offenen Auslassabschnitt 26. Der Auslassabschnitt 26 umfasst eine innere Kammer 23, durch die die angesaugte Luft aus dem Ansaugtrakt geleitet wird, bevor sie in den Zylinderkopf 11 gesaugt wird. Die Kammer 23 wird von einer Wandung umgeben, die auch eine Auslassöffnung 25 umschließt. Dadurch ist der Luftsammler 20 halbschalenförmig ausgebildet. Die Wandung, welche die Auslassöffnung 25 bildet, weist eine Stirnfläche 24 auf, welche die Öffnung bzw. den Auslass 25 umschließt. Diese Stirnfläche 24 ist parallel fluchtend zu der Querschnittsfläche des Auslass 25. In montiertem Zustand, in dem der Luftsammler 20 direkt an dem Zylinderkopf 11 befestigt ist, liegt der Luftsammler 20 mit einer umlaufenden Dichtung flächendeckend auf dem Zylinderkopf 11 auf. Die umlaufende Dichtung liegt dabei an der Stirnfläche 24 an. Mit dieser Stirnfläche 24 umschließt der Auslass 25 des Luftsammlers 20 die Einlassöffnungen 15a des Zylinderkopfs 11. Zum besseren Verständnis sind in Figur 2 die Einlassöffnungen 15a strichpunktiert dargestellt. Alle Einlassöffnungen 15a der Einlasskanäle 15 münden folglich nebeneinander in den Luftsammler 20 in den Auslass 25 des Luftsammlers 20.A perspective view of the air collector 20 is shown in FIG Fig. 2 shown. This has an inlet 21 with a main pipe section 22. The main pipe section 22 connects the inlet 21 with a substantially box-shaped, one-sided open outlet section 26. The outlet section 26 comprises an inner chamber 23, through which the sucked air is directed from the intake before It is sucked into the cylinder head 11. The chamber 23 is surrounded by a wall which also encloses an outlet opening 25. As a result, the air collector 20 is half-shell-shaped. The wall which forms the outlet opening 25 has an end face 24 which encloses the opening or the outlet 25. This end face 24 is parallel to the cross-sectional area of the outlet 25. In the assembled state, in which the air collector 20 is attached directly to the cylinder head 11, the air collector 20 rests with a circumferential seal on the cylinder head 11. The circumferential seal is applied to the end face 24. With this end face 24, the outlet 25 of the air collector 20 surrounds the inlet openings 15a of the cylinder head 11. For a better understanding, FIGS FIG. 2 the inlet openings 15a shown in phantom. All inlet openings 15a of the inlet channels 15 thus open side by side into the air collector 20 into the outlet 25 of the air collector 20.

In Fig. 3 ist eine Explosionsdarstellung abgebildet, die den Zylinderkopf 11 zeigt, mit daran angeordnetem Luftsammler 20. Fig. 3 zeigt die Rückseite des Luftsammlers 20, so dass dieser mit seiner Auslassöffnung 25 den Einlassöffnungen 15a der Einlasskanäle 15 im Zylinderkopf 11 zugewandt ist.In Fig. 3 is an exploded view showing the cylinder head 11, with arranged thereon air collector 20th Fig. 3 shows the back of the air collector 20 so that it faces the inlet openings 15a of the inlet channels 15 in the cylinder head 11 with its outlet opening 25.

Die gesamte Sauganlage kann durch das erfindungsgemäße Saugrohr in Form eines Luftsammlers 20 näher an den Zylinderkopf 11 heranrücken, da er im Vergleich zu einem Zylinderkopf einer konventionellen Sauganlage den Raum zwischen den Zuführleitungen als aktives Volumen mit nutzen kann. Dadurch wird ein größeres Gesamtvolumen des luftführenden Ansaugtrakts realisiert, bei gleichzeitig geringerer Ausdehnung des Bauraumbedarfs. Packagekonflikte können dadurch vermieden werden. Nicht zuletzt werden die Teilekosten sowie der Aufwand bei der Werkzeuggestaltung, zur Herstellung der Sauganlage reduziert, aufgrund der einfacheren geometrischen Formgebung des Luftsammlers 20. Darüber hinaus wird auch das Gewicht des Verbrennungsmotors reduziert, da sowohl der zylinderkopfseitige Anteil der Sauganlage gewichtsreduziert ist, als auch der Zylinderkopf durch die in die Seitenwand eingezogenen Einlasskanal-Eintritte größer sind.The entire intake system can zoom closer by the inventive intake manifold in the form of an air collector 20 to the cylinder head 11, since he can use the space between the supply lines as an active volume compared to a cylinder head of a conventional intake system. This results in a larger total volume of the air intake tract realized, at the same time lesser expansion of space requirements. Package conflicts can be avoided. Last but not least, the cost of parts and the effort in tool design, for the production of the intake system is reduced due to the simpler geometric shape of the air collector 20. In addition, the weight of the engine is reduced, since both the cylinder head side portion of the intake system is reduced in weight, as well Cylinder head are larger by the drawn into the side wall inlet duct entries.

Claims (7)

  1. An internal combustion engine (10) with:
    - an engine block (12),
    - a cylinder head (11), in which inlet ports (15) are provided which conduct air from inlet openings (15a) of the cylinder head (11) to outlet openings (15b) of the cylinder head (11), wherein the air flows in a direction of flow from the inlet openings (15a) through the inlet ports (15) to the outlet openings (15b),
    and
    - a plenum chamber (20) with an inlet (21) and an outlet (25),
    characterised in that
    the plenum chamber (20) is arranged directly on the cylinder head (11) and the outlet (25) of the plenum chamber (20) is arranged on the inlet openings (15a) of the cylinder head (11), the outlet (25) encompassing a plurality of inlet openings (15a), with a pressure generation means being provided in the direction of flow of the air before the plenum chamber (20).
  2. An internal combustion engine (10) according to Claim 1, characterised in that
    the outlet (25) of the plenum chamber (20) is limited by a circumambient wall which has an end face (24), and a single circumambient seal is arranged on the end face (24) of the plenum chamber (20).
  3. An internal combustion engine (10) according to one of the preceding claims, characterised in that
    the plenum chamber (20) is in the form of a half-shell.
  4. An internal combustion engine (10) according to one of the preceding Claims 1 to 3, characterised in that the plenum chamber (20) has a substantially tubular main pipe portion (22) and a substantially box-shaped outlet portion (26) which is open on one side.
  5. An internal combustion engine (10) according to one of the preceding Claims 1 to 4, characterised in that
    the plenum chamber (20) is screw-connected with its outlet (25) to the cylinder head (11) on a side of the cylinder head (11) on which the inlet openings (15a) are provided.
  6. An internal combustion engine (10) according to one of the preceding Claims 1 to 5, characterised in that
    the inlet openings (15a) of the cylinder head (11) open into the outlet (25) of the plenum chamber (20), with air from the plenum chamber (20) being able to flow out of the outlet (25) directly into the inlet openings (15a) to the inlet ports (15).
  7. An internal combustion engine (10) according to one of the preceding Claims 1 to 6, characterised in that
    the outlet (25) of the plenum chamber (20) is limited by a circumambient wall which has an end face (24), and in that the plenum chamber (20) is arranged on the cylinder head (11) in such a way that it directly contacts the cylinder head (20) with the end face (24).
EP13182305.6A 2012-09-25 2013-08-30 Combustion engine Active EP2711533B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012217285.8A DE102012217285A1 (en) 2012-09-25 2012-09-25 internal combustion engine

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EP2711533A1 EP2711533A1 (en) 2014-03-26
EP2711533B1 true EP2711533B1 (en) 2019-01-23

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Application Number Title Priority Date Filing Date
EP13182305.6A Active EP2711533B1 (en) 2012-09-25 2013-08-30 Combustion engine

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021000201A1 (en) 2021-01-18 2022-07-21 Mercedes-Benz Group AG Charge air distributor for an internal combustion engine, in particular a motor vehicle

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4111772A1 (en) * 1991-04-11 1992-10-15 Kloeckner Humboldt Deutz Ag INTAKE SYSTEM FOR A SELF-IGNITION COMBUSTION ENGINE
GB2338987A (en) * 1998-06-30 2000-01-12 Cummins Engine Co Ltd I.c. engine intake air system with electric heater inside manifold
US6116026A (en) * 1998-12-18 2000-09-12 Detroit Diesel Corporation Engine air intake manifold having built-in intercooler
FR2788565B1 (en) * 1999-01-15 2001-02-09 Renault Vehicules Ind INTAKE MANIFOLD COMPRISING MEANS OF CONNECTION TO AN EXHAUST GAS RECYCLING CIRCUIT
US20050133009A1 (en) * 2003-12-23 2005-06-23 Robert Rowells Runnerless engine intake manifold having integral fuel delivery groove
DE102005017971B4 (en) * 2005-04-19 2011-01-13 Audi Ag Method for changing the noise emissions of a motor vehicle
FR2907514A3 (en) * 2006-10-19 2008-04-25 Renault Sas Air intake splitter for internal combustion engine of motor vehicle, has distributing orifices provided for splitting air in combustion chambers of engine and defined on cassette that is inserted in cavity arranged in body
FR2936284B1 (en) * 2008-09-25 2013-07-12 Valeo Systemes Thermiques TWO-GAS MIXING MODULE FOR A HEAT EXCHANGER
DE102009019748A1 (en) * 2009-05-02 2010-11-11 Polytec Automotive Gmbh & Co. Kg Charge air housing for use in engine of e.g. passenger car, has fastening units i.e. screws, transferring forces produced by pressure prevailing in housing in installed condition over units to cylinder head for releasing welding joint

Non-Patent Citations (1)

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EP2711533A1 (en) 2014-03-26

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