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DE29811432U1 - Pipe system, especially intake manifold system for an internal combustion engine - Google Patents

Pipe system, especially intake manifold system for an internal combustion engine

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Publication number
DE29811432U1
DE29811432U1 DE29811432U DE29811432U DE29811432U1 DE 29811432 U1 DE29811432 U1 DE 29811432U1 DE 29811432 U DE29811432 U DE 29811432U DE 29811432 U DE29811432 U DE 29811432U DE 29811432 U1 DE29811432 U1 DE 29811432U1
Authority
DE
Germany
Prior art keywords
channels
intake
pipe system
transverse
intake manifold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE29811432U
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mann and Hummel GmbH
Original Assignee
Filterwerk Mann and Hummel GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Filterwerk Mann and Hummel GmbH filed Critical Filterwerk Mann and Hummel GmbH
Priority to DE29811432U priority Critical patent/DE29811432U1/en
Publication of DE29811432U1 publication Critical patent/DE29811432U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/109—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps having two or more flaps
    • 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
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/005—Oscillating pipes with charging achieved by arrangement, dimensions or shapes of intakes pipes or chambers; Ram air pipes
    • F02B27/006—Oscillating pipes with charging achieved by arrangement, dimensions or shapes of intakes pipes or chambers; Ram air pipes of intake runners
    • 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
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/008—Resonance charging
    • 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
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10072—Intake runners
    • 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
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10124—Ducts with special cross-sections, e.g. non-circular cross-section
    • 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
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10308—Equalizing conduits, e.g. between intake ducts or between plenum chambers
    • 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
    • F02M35/1034—Manufacturing and assembling intake systems
    • 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
    • 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
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
    • 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
    • F02M35/108—Intake manifolds with primary and secondary intake passages
    • F02M35/1085—Intake manifolds with primary and secondary intake passages the combustion chamber having multiple intake valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Characterised By The Charging Evacuation (AREA)

Description

::». &igr; ill* : f.,*::». &igr; ill* : f.,*

23. Juni 199823 June 1998

Rohrsystem, insbesondere Saugrohrsystem für eine BrennkraftmaschinePipe system, in particular intake manifold system for an internal combustion engine

BeschreibungDescription

Stand der TechnikState of the art

Die Erfindung betrifft ein Rohrsystem, insbesondere ein Saugrohrsystem für eine Brennkraftmaschine nach der Gattung des Anspruchs 1, welches zur Verbesserung der akustischen Eigenschaften Querverbindungen zwischen den Saugkanälen vor den Zylindereinlässen aufweist. Die Anordnung eines derartigen Verbindungskanals ist z. B. aus der US 3 505 983 bekannt. Dieser Verbindungskanal ist als ein U-förmiges Rohr ausgeführt, dessen Öffnungen mit Bohrungen in den Saugkanälen zusammenwirken. Dieses Bauteil stellt jedoch eine erhöhten Material- und Montageaufwand für das Saugsystem dar. Außerdem ist seine akustische Wirkung begrenzt durch die Länge sowie die gekrümmte Geometrie des Querkanalvolumens.The invention relates to a pipe system, in particular an intake manifold system for an internal combustion engine according to the preamble of claim 1, which has cross connections between the intake channels in front of the cylinder inlets in order to improve the acoustic properties. The arrangement of such a connecting channel is known, for example, from US 3,505,983. This connecting channel is designed as a U-shaped pipe, the openings of which interact with holes in the intake channels. However, this component represents an increased material and assembly effort for the intake system. In addition, its acoustic effect is limited by the length and the curved geometry of the cross channel volume.

Die Aufgabe der Erfindung besteht daher darin, eine kostengünstige Lösung für die Verbindung der Saugkanäle zu finden, die außerdem akustisch optimiert ist. Diese Aufgabe wird durch die Merkmale des'tjanspruchs 1 gelöst.The object of the invention is therefore to find a cost-effective solution for the connection of the suction channels, which is also acoustically optimized. This object is solved by the features of claim 1.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Saugrohrsystem besitzt Querkanäle, die jeweils benachbarte Saugkanäle des Saugrohrsystems weitgehend direkt miteinander verbinden. Diese Querverbindungen vermindern Resonanzeffekte, die durch den Ladungswechsel der Zylinder verursacht werden. Die Querverbindungen dämpfen dadurch vor allen Dingen hochfrequente Anteile im Sauggeräusch, die durch den Benutzer desThe intake manifold system according to the invention has cross channels that largely directly connect adjacent intake channels of the intake manifold system. These cross connections reduce resonance effects caused by the charge exchange of the cylinders. The cross connections therefore dampen, above all, high-frequency components of the intake noise that are caused by the user of the

Fahrzeugs als störend wahrgenommen werden. Eine Reduzierung dieser Frequenzen läßt sich vor allen Dingen in höheren Drehzahlbereichen über 5.000 U/min erreichen.vehicle as disturbing. A reduction in these frequencies can be achieved above all in higher speed ranges above 5,000 rpm.

Der Leistungsverlust, der durch diese Lösung verursacht wird, fällt recht gering aus. Die genaue Lage der Querverbindung in der Saugkanalstrecke hängt von den individuellen geometrischen Gegebenheiten des jeweils zu optimierenden Saugrohrs ab. Der optimale Punkt, in dem eine gute Dämpfung bei geringem Leistungsverlust erreicht wird, ist in jedem Anwendungsfall durch Versuche zu ermitteln.The loss of performance caused by this solution is quite low. The exact position of the cross connection in the intake channel section depends on the individual geometric conditions of the intake manifold to be optimized. The optimal point at which good damping is achieved with little loss of performance must be determined by testing in each application.

Eine vorteilhafte Ausbildung des Erfindungsgedankens sieht vor, die Querkanäle als geradlinige Verbindung zwischen den Saugkanalwänden auszuführen. Dadurch wird die optimal kurze Verbindung der Saugkanäle erreicht. Außerdem wird der Strömungswiderstand in den Querkanälen minimiert.An advantageous development of the inventive concept provides for the transverse channels to be designed as a straight connection between the suction channel walls. This achieves the optimum short connection between the suction channels. In addition, the flow resistance in the transverse channels is minimized.

Es ist vorteilhaft, die Querkanäle in die Gehäuseteile des Saugrohrsystems zu integrieren. Insbesondere bei gegossenen Saugrohren können die Querkanäle bereits bei der Formgestaltung des Gußwerkzeugs beachtet werden. Dadurch entfällt die nachträgliche Montage zusätzlicher Bauteile. Dies bringt sowohl bei der Fertigung wie auch bei der Montage Kostenvorteile.It is advantageous to integrate the cross channels into the housing parts of the intake manifold system. Particularly with cast intake manifolds, the cross channels can be taken into account when designing the mold. This eliminates the need for subsequent assembly of additional components. This brings cost advantages in both production and assembly.

Speziell für in Mehrschalentechnik hergestellte Saugrohre ergibt sich eine besondere Ausführungsform der Erfindung dadurch, daß die Querkanäle in der Trennebene der Saugrohrschalen angeordnet sind. Die Gehäuseteilung läuft dann durch die Wandung des Querkanals. Dadurch muß kein Kern für das Querkanalvolumen im Gußwerkzeug vorgesehen werden.A special embodiment of the invention is particularly suitable for intake manifolds manufactured using multi-shell technology, in that the transverse channels are arranged in the parting plane of the intake manifold shells. The housing division then runs through the wall of the transverse channel. This means that no core for the transverse channel volume needs to be provided in the casting tool.

Diese Anordnung hat im übrigen den Vorteil, daß eine nachträgliche Modifikation der Gußwerkzeuge für die Halbschalen des Saugrohrystems möglich ist. Die Notwendigkeit der Verbesserung eines akustischen Verhaltens von Saugrohren zeigt sich nämlich häufig erst an seriennahen Bauteilen. Zur nachträglichen Einbringung eines Querkanals im Saugsystem müssen bei dieser Variante dann nur die Formhälften der Gußwerkzeuge modifiziert werden, z. B. durch Einbringen einer NutThis arrangement also has the advantage that subsequent modification of the casting tools for the half shells of the intake manifold system is possible. The need to improve the acoustic behavior of intake manifolds often only becomes apparent on components that are close to series production. In order to subsequently introduce a cross channel in the intake system, with this variant only the mold halves of the casting tools need to be modified, e.g. by introducing a groove

in der einen sowie Aufbringen einer das Querkanalvolumen erzeugenden Erhebung in der anderen.in one and the application of a raised area that creates the transverse channel volume in the other.

Eine zweckmäßige Gestaltung der Querkanäle sieht einen Querschnitt der Querkanäle zwischen 15 und 45 mm2 vor. In diesem Querschnittsbereich sind hinsichtlich der angestrebten Dämpfung bei geringem Leistungsverlust die besten Ergebnisse zu erwarten.A practical design of the transverse channels provides for a cross-section of the transverse channels between 15 and 45 mm 2. In this cross-sectional range, the best results can be expected in terms of the desired damping with low power loss.

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.These and other features of preferred developments of the invention emerge not only from the claims but also from the description and the drawings, whereby the individual features can be implemented individually or in combination in the form of sub-combinations in the embodiment of the invention and in other areas and can represent advantageous and protectable embodiments for which protection is claimed here.

Zeichnungdrawing

Weitere Einzelheiten der Erfindung werden in den Zeichnungen anhand von schematischen Ausführungsbeispielen beschrieben. Hierbei zeigenFurther details of the invention are described in the drawings using schematic embodiments.

Figur 1 den schematischen Aufbau eines Saugsystems mitFigure 1 shows the schematic structure of a suction system with

Querkanälen und dessen Anordnung an einem Zylinderkopf undCross channels and its arrangement on a cylinder head and

Figur 2 den Querschnitt durch ein Zweischalensaugrohr entlang des Querkanals, wie er sich durch den Schnitt A - A der Schemazeichnung in Figur 1 ergeben würde.Figure 2 shows the cross section through a two-shell suction pipe along the transverse channel, as it would result from section A - A of the schematic drawing in Figure 1.

Beschreibung der AusführungsbeispieleDescription of the embodiments

In Figur 1 ist die prinzipielle Anordnung eines Saugsystems mit Querkanälen dargestellt. Die Ansaugluft wird durch einen Einlaß 10 in einen Sammelraum 11 des Saugrohrsystems gesogen. Hier verteilt sie sich auf vier Saugkanäle 12 und wirdFigure 1 shows the basic arrangement of a suction system with cross channels. The intake air is sucked through an inlet 10 into a collecting chamber 11 of the intake pipe system. Here it is distributed over four suction channels 12 and is

· ♦· ♦

durch Auslässe 21 des Saugrohrs zu Einlaßventilen 13 von Zylindern 14 geleitet. Das Saugsystem kann zur Regulierung des Luftstroms gestrichelt dargestellte Drosselklappen 15 aufweisen. Die Saugkanäle sind auf der Strecke zwischen dem Sammler 11 und den Auslässen 21 durch Querkanäle 16 miteinander verbunden, und zwar in der Art, daß sich eine Verbindung jeweils zwischen benachbarten Saugkanälen ergibt. Die Form des Querschnitts der Querkanäle ist frei wählbar, insbesondere wenn das Saugrohrsystem gegossen wird.through outlets 21 of the intake manifold to intake valves 13 of cylinders 14. The intake system can have throttle valves 15, shown in dashed lines, to regulate the air flow. The intake channels are connected to one another by transverse channels 16 on the section between the collector 11 and the outlets 21, in such a way that a connection is created between adjacent intake channels. The shape of the cross section of the transverse channels can be freely selected, particularly if the intake manifold system is cast.

Das dargestellte Saugrohrsystem gehört zu einer vierzylindrigen Brennkraftmaschine. Eine Alternative für die Querkanäle 16 ergibt sich dadurch, daß nur jeweils zwei der benachbarten Saugkanäle verbunden werden, der Querkanal zwischen den mittleren beiden Saugkanälen jedoch wegfällt.The intake manifold system shown belongs to a four-cylinder internal combustion engine. An alternative for the transverse channels 16 is that only two of the adjacent intake channels are connected, but the transverse channel between the two middle intake channels is omitted.

In Figur 2 sind Schalen 17 eines in Zweischalentechnik hergestellten Kunststoffsaugrohres im Schnitt dargestellt. Zwischen Saugrohrquerschnitten 18 verlaufen die Querkanäle 16, die ebenfalls aus den Schalen 17 gebildet werden. Eine Trennfuge 19 verläuft sowohl durch die Saugrohrquerschnitte 18 wie auch durch die Querkanäle 16, so daß für diese Hohlräume keine Kerne in den Gußwerkzeugen vorgesehen werden müssen.Figure 2 shows a cross-section of shells 17 of a plastic intake manifold made using the two-shell technique. The transverse channels 16, which are also formed from the shells 17, run between the intake manifold cross-sections 18. A parting line 19 runs through both the intake manifold cross-sections 18 and the transverse channels 16, so that no cores need to be provided in the casting tools for these cavities.

Claims (5)

AnsprücheExpectations 1. Rohrsystem, insbesondere Saugrohrsystem für eine Brennkraftmaschine, umfassend einen Sammelraum (11) mit einem Einlaß (10), mindestens zwei zu den Zylindern führenden Saugkanälen (12) mit zylinderseitigen Auslässen (21) und mindestens einem zwei benachbarte Saugkanäle (12) verbindenden Querkanal (16), dadurch gekennzeichnet, daß dieser zumindest im wesentlichen zwischen den jeweils benachbarten Wänden der verbundenen Saugkanäle angeordnet ist.1. Pipe system, in particular intake manifold system for an internal combustion engine, comprising a collecting chamber (11) with an inlet (10), at least two intake channels (12) leading to the cylinders with cylinder-side outlets (21) and at least one transverse channel (16) connecting two adjacent intake channels (12), characterized in that this is arranged at least substantially between the respectively adjacent walls of the connected intake channels. 2. Rohrsystem nach Anspruch 1, dadurch gekennzeichnet, daß die Querkanäle (16) als direkte geradlinige Verbindungen zwischen den Saugkanälen (12) ausgeführt sind.2. Pipe system according to claim 1, characterized in that the transverse channels (16) are designed as direct straight connections between the suction channels (12). 3. Rohrsystem nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Querkanäle (16) als Teil von wandungsbildenden Gehäuseteilen ausgeführt sind.3. Pipe system according to one of the preceding claims, characterized in that the transverse channels (16) are designed as part of wall-forming housing parts. 4. Rohrsystem nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß dieses aus mehreren Schalen (17) besteht und die Querkanäle (16) derart angeordnet sind, daß eine Trennfuge (19) durch den Querkanal (16) verläuft.4. Pipe system according to one of the preceding claims, characterized in that it consists of several shells (17) and the transverse channels (16) are arranged such that a separating joint (19) runs through the transverse channel (16). 5. Rohrsystem nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß der Querschnitt der Querkanäle (16) zwischen 15 und 45 mm2 beträgt.5. Pipe system according to one of the preceding claims, characterized in that the cross-section of the transverse channels (16) is between 15 and 45 mm 2 . 2. yi151A.DOC2. yi151A.DOC
DE29811432U 1998-06-26 1998-06-26 Pipe system, especially intake manifold system for an internal combustion engine Expired - Lifetime DE29811432U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29811432U DE29811432U1 (en) 1998-06-26 1998-06-26 Pipe system, especially intake manifold system for an internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE29811432U DE29811432U1 (en) 1998-06-26 1998-06-26 Pipe system, especially intake manifold system for an internal combustion engine

Publications (1)

Publication Number Publication Date
DE29811432U1 true DE29811432U1 (en) 1998-09-03

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000045044A1 (en) * 1999-01-27 2000-08-03 Filterwerk Mann+Hummel Gmbh Intake device having a conducting section which comprises orifices
US7069894B2 (en) 2004-04-24 2006-07-04 Mann & Hummel Gmbh Intake manifold having intake pipes linked by transverse acoustic synchronization channels with exhaust gas recirculation inlets
DE102008058938A1 (en) 2008-11-25 2010-06-02 Mann + Hummel Gmbh Suction tube system for supply of combustion air to cylinder of internal-combustion engine, has drilling brought into wall of suction tube, where suction tube is connected with interior of air accumulator by drilling
EP2587043A1 (en) * 2011-10-27 2013-05-01 C.R.F. Società Consortile per Azioni An intake assembly for an internal combustion engin
EP2679796A3 (en) * 2011-10-27 2014-04-30 C.R.F. Società Consortile per Azioni Intake assembly for an internal combustion engine
WO2016144630A1 (en) * 2015-03-06 2016-09-15 Polaris Industries Inc. Supplementary air assembly for an engine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000045044A1 (en) * 1999-01-27 2000-08-03 Filterwerk Mann+Hummel Gmbh Intake device having a conducting section which comprises orifices
US7069894B2 (en) 2004-04-24 2006-07-04 Mann & Hummel Gmbh Intake manifold having intake pipes linked by transverse acoustic synchronization channels with exhaust gas recirculation inlets
DE102008058938A1 (en) 2008-11-25 2010-06-02 Mann + Hummel Gmbh Suction tube system for supply of combustion air to cylinder of internal-combustion engine, has drilling brought into wall of suction tube, where suction tube is connected with interior of air accumulator by drilling
EP2587043A1 (en) * 2011-10-27 2013-05-01 C.R.F. Società Consortile per Azioni An intake assembly for an internal combustion engin
EP2679796A3 (en) * 2011-10-27 2014-04-30 C.R.F. Società Consortile per Azioni Intake assembly for an internal combustion engine
US9845775B2 (en) 2011-10-27 2017-12-19 C.R.F. Societa Consortile Per Azioni Intake assembly for an internal combustion engine
WO2016144630A1 (en) * 2015-03-06 2016-09-15 Polaris Industries Inc. Supplementary air assembly for an engine
CN107429641A (en) * 2015-03-06 2017-12-01 北极星工业有限公司 Auxiliary air component for engine
US10247148B2 (en) 2015-03-06 2019-04-02 Polaris Industries Inc. Supplementary air assembly for an engine
AU2016229289B2 (en) * 2015-03-06 2019-10-10 Polaris Industries Inc. Supplementary air assembly for an engine
CN107429641B (en) * 2015-03-06 2020-08-21 北极星工业有限公司 Auxiliary air components for engines

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