EP1147304B1 - Intake device having a conducting section which comprises orifices - Google Patents
Intake device having a conducting section which comprises orifices Download PDFInfo
- Publication number
- EP1147304B1 EP1147304B1 EP99958058A EP99958058A EP1147304B1 EP 1147304 B1 EP1147304 B1 EP 1147304B1 EP 99958058 A EP99958058 A EP 99958058A EP 99958058 A EP99958058 A EP 99958058A EP 1147304 B1 EP1147304 B1 EP 1147304B1
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- EP
- European Patent Office
- Prior art keywords
- section
- intake system
- cross
- openings
- orifices
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- 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
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 230000010349 pulsation Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000001939 inductive effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005266 casting Methods 0.000 description 5
- 238000013016 damping Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Images
Classifications
-
- 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
- F02M35/1205—Flow throttling or guiding
- F02M35/1216—Flow throttling or guiding by using a plurality of holes, slits, protrusions, perforations, ribs or the like; Surface structures; Turbulence generators
-
- 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
- F02M35/1205—Flow throttling or guiding
- F02M35/1238—Flow throttling or guiding by using secondary connections to the ambient, e.g. covered by a membrane or a porous member
-
- 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
- F02M35/1283—Manufacturing or assembly; Connectors; Fixations
Definitions
- the invention relates to a suction device, in particular for a Internal combustion engine, with a line section that has openings, after the genus of claim 1.
- the area around the pipe is usually formed by the engine compartment, in the further Components of the internal combustion engine are arranged.
- the engine compartment with the interior of the pipe leads to pulsation of the intake air Vibration excitation of other components in the engine compartment, which additional Vibration damping measures may be necessary.
- An air filter for internal combustion engines is disclosed in document DE 32 34 633.
- the air filter has an air inlet connection which is arranged radially Bores.
- the holes are arranged in two belts, making the Intake noise level is reduced.
- the intake manifold is a one-piece unit executed, making the drilling of the holes is complex.
- DE 91 13 807 discloses an air filter for an internal combustion engine, which via a raw air intake, a filter housing and a clean air outlet features. Starting from the clean air outlet, a clean air nozzle protrudes into the clean side of the filter housing. The clean air nozzle has holes which are used for Noise reduction are provided. The clean air connector is a one-piece unit executed using a complicated tool to create the holes is required.
- the object of the invention is to create a line section, in particular for the intake system of internal combustion engines, with optimal noise damping Properties that are economical to manufacture and low vibration influence neighboring components in the engine compartment. This task is solved by the features of claim 1.
- the suction device according to the invention has a line section which has a number of openings, these openings each having a cross section of less than 7 mm 2 .
- a larger number of openings can therefore be provided in the line section, the total cross section of all openings remaining the same or even becoming smaller.
- the influences on the components adjacent to the line section due to pulsation effects can be minimized as far as possible.
- the breakthroughs are designed as round holes. You can then inexpensively drill holes in the wall of the line section are introduced. If the line section is made of plastic, can also accommodate a larger number of holes economic aspects are brought into the line section. It is advantageous to provide holes with a diameter of approximately 1.5 mm. It It has been shown that rows of holes consisting of holes with a diameter of 1.5 mm in the problematic frequency range of 100-300 Hertz even a higher one Damping factor, caused by the line section, have, as a piece of fabric hose with the same dimensions as that with Holes provide the line section.
- the Breakthroughs can then be achieved by appropriate design of the casting tools be formed. It is therefore not a further manufacturing step for the introduction of the Breakthroughs necessary.
- This variant can have a round cross section Breakthroughs are disregarded.
- a cross-sectional area of the Breakthroughs corresponding to bores with a diameter of 1.5 mm are particularly important advantageous.
- a further embodiment of the invention provides the breakthroughs in the To accommodate a joint between two castings.
- the castings can then, for. B. be plugged together by a clip connection.
- a leakage can be accepted in the joint between the castings. These can even lead to a further improvement in the intake manifold acoustics and this be used consciously.
- the breakthroughs in the parting line of the housing parts arranged, this has the advantage that this is only a slightly different one Design of the housing shape in the edge area is necessary. such Modifications can also be made later in the mold be when z. B. shows that the acoustics of a near-series intake system is still in need of improvement.
- this can according to a further embodiment of the invention one in the flow direction have increasing cross-section.
- This diffuser-like design the air entry into the pipe section favors. This happens through a Recovery of speed energy from the at the entrance of the Pipe sections of the resulting pressure loss.
- the Cross sections of the line section be made variable.
- the Cross-sectional change is generated with the help of an actuator, which a Part of the wall of the line section represents.
- the breakthroughs can be made both in the fixed wall parts as well as in the control element.
- the Control element can be provided for different cross-sectional profiles. It is conceivable, for. B. a variation of the opening angle of the diffuser. Another Possibility is a constant over the length of the actuator To provide cross-sectional area of the line section, wherein by pressing the Actuator this cross-sectional area can be varied.
- FIG. 1 shows the basic structure of a line section 10 which is suitable for installation in a suction device for an internal combustion engine.
- the line section is used as a raw air intake and is attached to the intake device by means of a flange 11.
- the direction of flow is indicated by an arrow, the circular cross sections increasing linearly in the direction of flow. This results in a diffuser effect of the line section.
- a tube wall 12 is provided with four rows of bores 13, the bores each having a cross section of less than 7 mm 2 .
- the rows of holes created in this way are arranged offset by 90 ° on the circumference of the tube wall.
- Figure 2 shows a cross section through the line section 10, which in the essentially has the same geometry as that shown in FIG.
- the Line section according to Figure 2 consists of two half-shells 14 through a snap connection 15 are interconnected.
- a parting line 16 There are recesses between the half-shells 14 at regular intervals provided that produce openings 17 in the tube wall.
- the Snap connections 15 are arranged such that they are in one area between two openings on the intake manifold shells. By a corresponding design of the half-shells 14, these can be in the same mold getting produced. This can reduce the cost of a second mold be saved.
- FIG. 3 shows the possible configuration of a vario diffuser 18.
- This has one rectangular cross-section. Three walls of the cross section are more rigid Base body 19 formed.
- the fourth wall consists essentially of one Control element 20 which is driven by a schematically illustrated motor 21 becomes.
- the actuating element is rotatably mounted in the base body via a hinge 22.
- the actuator 20 is flexible Wall section 23 connected to the base body. Thanks to the motor drive the control element is moved around the hinge axis, whereby the linear Cross-sectional change of the vario diffuser 18 in the line section 10 varies can be.
- the control element shears along side walls 24 of the Body. A seal can be provided between these two components be, or a narrow sealing gap is provided.
- Openings 17 housed in the control element 20 for positively influencing the Intake acoustics can be used.
- the connection between the flexible Wall section 23 each with the actuating element 20 and the base body 19 can, for. B. by an adhesive connection or vulcanization.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Characterised By The Charging Evacuation (AREA)
- Exhaust Silencers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- External Artificial Organs (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Die Erfindung betrifft eine Ansaugvorrichtung, insbesondere für eine Brennkraftmaschine, mit einem Leitungsabschnitt, der Durchbrüche aufweist, nach der Gattung des Patentanspruches 1.The invention relates to a suction device, in particular for a Internal combustion engine, with a line section that has openings, after the genus of claim 1.
Die Anbringung von Durchbrüchen, insbesondere Bohrungen, ist z. B. aus der DE 1642857 bekannt. Gemäß dieser Schrift wird der Ansaugstutzen eines Luftfiltergehäuses mit einer Reihe von Bohrungen versehen. Um aus fertigungstechnischen Gründen die Anzahl der Bohrungen zu begrenzen, sind diese in einer hinreichenden Größe zu Erreichung des gewünschten akustischen Effektes ausgeführt. Die Bohrungen schaffen Kurzschlüsse des Rohrvolumens mit der Umgebung jenseits der Rohrwand. Dadurch wird die Ausbildung stehender Wellen im Rohr unterdrückt oder vermindert und hierdurch eine Dämpfung des Ansauggeräusches erzielt.The attachment of breakthroughs, especially holes, is such. B. from DE 1642857 known. According to this document, the intake manifold becomes one Air filter housing with a series of holes. To out To limit the number of bores for manufacturing reasons, these are in a sufficient size to achieve the desired acoustic effect executed. The holes create short circuits in the pipe volume with the Environment beyond the pipe wall. This creates the formation of standing waves suppressed or reduced in the tube and thereby damping the Intake noise achieved.
Die Umgebung des Rohres wird meist durch den Motorraum gebildet, in dem weitere Komponenten der Brennkraftmaschine angeordnet sind. Durch den Kurzschluß des Motorraumes mit dem Rohrinneren führt jedoch die Pulsation der Ansaugluft zu einer Schwingungsanregung anderer Bauteile im Motorraum, was zusätzliche Maßnahmen zur Schwingungsdämpfung notwendig werden lassen kann. Außerdem kann es über die Bohrungen zu einer Ansaugung von Warmluft aus dem Motorraum kommen, wobei hierdurch die Leistung der Brennkraftmaschine vermindert wird. Im übrigen bedeutet das Anbringen von Bohrungen im Rohrstutzen ein zusätzlichen Fertigungsaufwand der die Wirtschaftlichkeit des Bauteils vermindert. Dieser kann nur in Grenzen gehalten werden, in dem nur eine geringe Anzahl von Bohrungen vorgesehen wird. The area around the pipe is usually formed by the engine compartment, in the further Components of the internal combustion engine are arranged. By shorting the However, the engine compartment with the interior of the pipe leads to pulsation of the intake air Vibration excitation of other components in the engine compartment, which additional Vibration damping measures may be necessary. Moreover There may be a warm air intake from the engine compartment via the holes come, thereby reducing the performance of the internal combustion engine. in the the rest of the holes in the pipe socket means an additional Manufacturing effort that reduces the cost-effectiveness of the component. This can only be kept within limits in which only a small number of holes is provided.
Man könnte nun als Leitungsabschnitt einen Gewebeschlauch einsetzen, der eine gewisse Luftdurchlässigkeit zur Umgebung aufweist. Diese Bauelemente besitzen zwar optimale akustische Eigenschaften, sind aber teuer in der Herstellung. Außerdem schafft die Anbindung an die Ansaugvorrichtung einen zusätzlichen fertigungs- und montagetechnischen Aufwand.One could now use a fabric hose as the line section, the one has certain air permeability to the environment. Own these components optimal acoustic properties, but are expensive to manufacture. Moreover the connection to the suction device creates an additional manufacturing and assembly costs.
In dem Dokument DE 32 34 633 ist ein Luftfilter für Brennkraftmaschinen offenbart. Der Luftfilter verfügt über einen Lufteinlaßstutzen, welcher über radial angeordnete Bohrungen verfügt. Die Bohrungen sind in zwei Gürteln angeordnet, wodurch der Ansauggeräuschpegel gesenkt wird. Der Ansaugstutzen ist als einteilige Baueinheit ausgeführt, wodurch das Einbringen der Bohrungen aufwendig ist.An air filter for internal combustion engines is disclosed in document DE 32 34 633. The air filter has an air inlet connection which is arranged radially Bores. The holes are arranged in two belts, making the Intake noise level is reduced. The intake manifold is a one-piece unit executed, making the drilling of the holes is complex.
Weiterhin offenbart die DE 91 13 807 einen Luftfilter für eine Brennkraftmaschine, welcher über einen Rohluftansaugstutzen, ein Filtergehäuse und einen Reinluftauslaß verfügt. Ausgehend von dem Reinluftauslaß ragt ein Reinluftstutzen in die Reinseite des Filtergehäuses. Der Reinluftstutzen verfügt über Bohrungen, welche zur Geräuschreduzierung vorgesehen sind. Der Reinluftstutzen ist als einteilige Baueinheit ausgeführt, wobei ein kompliziertes Werkzeug zur Erzeugung der Bohrungen erforderlich ist.Furthermore, DE 91 13 807 discloses an air filter for an internal combustion engine, which via a raw air intake, a filter housing and a clean air outlet features. Starting from the clean air outlet, a clean air nozzle protrudes into the clean side of the filter housing. The clean air nozzle has holes which are used for Noise reduction are provided. The clean air connector is a one-piece unit executed using a complicated tool to create the holes is required.
Die Aufgabe der Erfindung ist die Schaffung eines Leitungsabschnittes, insbesondere für den Ansaugtrakt von Brennkraftmaschinen, mit optimalen geräuschdämpfenden Eigenschaften, der wirtschaftlich in der Herstellung ist und eine geringe Schwingungsbeeinflussung benachbarter Bauteile im Motorraum zur Folge hat. Diese Aufgabe wird durch die Merkmale des Anspruches 1 gelöst.The object of the invention is to create a line section, in particular for the intake system of internal combustion engines, with optimal noise damping Properties that are economical to manufacture and low vibration influence neighboring components in the engine compartment. This task is solved by the features of claim 1.
Die erfindungsgemäße Ansaugvorrichtung weist einen Leitungsabschnitt auf, der eine Reihe von Durchbrüchen besitzt, wobei diese Durchbrüche jeweils einen Querschnitt von weniger als 7 mm2 aufweisen. Im Vergleich zum Stand der Technik kann daher eine größere Anzahl von Durchbrüchen im Leitungsabschnitt vorgesehen werden, wobei dabei der Gesamtquerschnitt aller Durchbrüche gleich bleibt oder sogar kleiner wird. Dadurch können die Einflüsse auf die dem Leitungsabschnitt benachbarten Bauteile aufgrund von Pulsationseffekten weitestgehend minimiert werden.The suction device according to the invention has a line section which has a number of openings, these openings each having a cross section of less than 7 mm 2 . In comparison to the prior art, a larger number of openings can therefore be provided in the line section, the total cross section of all openings remaining the same or even becoming smaller. As a result, the influences on the components adjacent to the line section due to pulsation effects can be minimized as far as possible.
Gemäß einer zweckmäßigen Ausbildung des Erfindungsgedankens sind die Durchbrüche als Rundlöcher ausgeführt. Sie können dann kostengünstig als Bohrungen in die Wandung des Leitungsabschnittes eingebracht werden. Sofern der Leitungsabschnitt aus Kunststoff besteht, kann auch eine größere Anzahl von Bohrungen unter wirtschaftlichen Gesichtspunkten in den Leitungsabschnitt eingebracht werden. Es ist vorteilhaft, Bohrungen mit einem Durchmesser von ungefähr 1,5 mm vorzusehen. Es hat sich gezeigt, dass Lochreihen, bestehend aus Bohrungen mit 1,5 mm Durchmesser im problematischen Frequenzbereich von 100 - 300 Hertz sogar ein höheres Dämpfungsmaß, bewirkt durch den Leitungsabschnitt, aufweisen, als ein Gewebeschlauchstück mit gleichen Abmessungen wie der mit Bohrungen versehen Leitungsabschnitt.According to an expedient development of the inventive concept, the breakthroughs are designed as round holes. You can then inexpensively drill holes in the wall of the line section are introduced. If the line section is made of plastic, can also accommodate a larger number of holes economic aspects are brought into the line section. It is advantageous to provide holes with a diameter of approximately 1.5 mm. It It has been shown that rows of holes consisting of holes with a diameter of 1.5 mm in the problematic frequency range of 100-300 Hertz even a higher one Damping factor, caused by the line section, have, as a piece of fabric hose with the same dimensions as that with Holes provide the line section.
Gemäß einer günstigen Ausführungsform der Erfindung besteht der Leitungsabschnitt aus mindestens einem Gußteil, insbesondere aus Kunststoff. Die Durchbrüche können dann durch eine entsprechende Gestaltung der Gußwerkzeuge gebildet werden. Es ist somit kein weiterer Fertigungsschritt zur Einbringung der Durchbrüche notwendig. Bei dieser Variante kann von einem runden Querschnitt der Durchbrüche abgesehen werden. Auch hier ist eine Querschnittsfläche der Durchbrüche entsprechend von Bohrungen mit 1,5 mm Durchmesser besonders vorteilhaft.According to a favorable embodiment of the invention, the Line section from at least one casting, in particular made of plastic. The Breakthroughs can then be achieved by appropriate design of the casting tools be formed. It is therefore not a further manufacturing step for the introduction of the Breakthroughs necessary. This variant can have a round cross section Breakthroughs are disregarded. Here, too, is a cross-sectional area of the Breakthroughs corresponding to bores with a diameter of 1.5 mm are particularly important advantageous.
Eine weitere Ausgestaltung der Erfindung sieht vor, die Durchbrüche in der Trennfuge zwischen zwei Gußteilen unterzubringen. Die Gußteile können dann z. B. durch eine Klipsverbindung aufeinander gesteckt werden. Dabei kann eine Leckgage in der Trennfuge zwischen den Gußteilen hingenommen werden. Diese können sogar zu einer weiteren Verbesserung der Saugrohrakustik führen und hierzu bewußt genutzt werden. Werden die Durchbrüche in der Trennfuge der Gehäuseteile angeordnet, hat dies den Vorteil, daß hierzu nur eine unwesentlich andere Gestaltung der Gehäuseform im Randbereich notwendig ist. Derartige Modifikationen können auch nachträglich in der Gußform noch vorgenommen werden, wenn sich z. B. zeigt daß die Akustik eines seriennahen Ansaugsystems noch verbesserungswürdig ist.A further embodiment of the invention provides the breakthroughs in the To accommodate a joint between two castings. The castings can then, for. B. be plugged together by a clip connection. A leakage can be accepted in the joint between the castings. these can even lead to a further improvement in the intake manifold acoustics and this be used consciously. The breakthroughs in the parting line of the housing parts arranged, this has the advantage that this is only a slightly different one Design of the housing shape in the edge area is necessary. such Modifications can also be made later in the mold be when z. B. shows that the acoustics of a near-series intake system is still in need of improvement.
Aus akustischer Sicht ist es besonders vorteilhaft, die Durchbrüche in einer oder mehreren Reihen entlang der Durchflußrichtung des Rohres anzuordnen. Auf diese Weise kann die Ausbildung von stehenden Wellen im dämpfenden Leitungsabschnitt über einen größeren Frequenzbereich wirksam vermindert werden. Hierdurch ergibt sich eine Dämpfung über ein größeres Frequenzspektrum hinweg.From an acoustic point of view, it is particularly advantageous to have the openings in one or the other to arrange several rows along the flow direction of the tube. To this This can result in the formation of standing waves in the damping line section can be effectively reduced over a larger frequency range. This gives attenuation across a larger frequency spectrum.
Um den Lufteintritt in den Leitungsabschnitt zu begünstigen, kann dieser gemäß einer weiteren Ausgestaltung der Erfindung einen in Strömungsrichtung zunehmenden Querschnitt aufweisen. Durch diese diffusorartige Ausgestaltung wird der Lufteintritt in den Rohrabschnitt begünstigt. Dies geschieht durch eine Rückgewinnung von Geschwindigkeitsenergie aus dem am Eingang des Leitungsabschnrties entstehenden Druckverlustes.In order to favor the air entry into the line section, this can according to a further embodiment of the invention one in the flow direction have increasing cross-section. This diffuser-like design the air entry into the pipe section favors. This happens through a Recovery of speed energy from the at the entrance of the Pipe sections of the resulting pressure loss.
Weiterhin können gemäß einer günstigen Aufsührungsform der Erfindung die Querschnitte des Leitungsabschnittes veränderlich ausgerührt sein. Die Querschnittsveränderung wird mit Hilfe eines Stellelementes erzeugt, welches einen Teil der Wand des Leitungsabschnittes darstellt. Die Durchbrüche können sowohl in den festen Wandteilen wie auch im Stellelement untergebracht sein. Das Stellelement kann für unterschiedliche Querschnittsverläufe vorgesehen werden. Denkbar ist z. B. eine Variation des Öffnungswinkels des Diffusors. Eine andere Möglichkeit besteht darin, über die Länge des Stellelementes eine konstante Querschnittsfläche des Leitungsabschnittes vorzusehen, wobei durch Betätigung des Stellelementes diese Querschnittsfläche variien werden kann.Furthermore, according to a favorable embodiment of the invention, the Cross sections of the line section be made variable. The Cross-sectional change is generated with the help of an actuator, which a Part of the wall of the line section represents. The breakthroughs can be made both in the fixed wall parts as well as in the control element. The Control element can be provided for different cross-sectional profiles. It is conceivable, for. B. a variation of the opening angle of the diffuser. Another Possibility is a constant over the length of the actuator To provide cross-sectional area of the line section, wherein by pressing the Actuator this cross-sectional area can be varied.
Weitere Einzelheiten der Erfindung werden in den Zeichnungen anhand von schematischen Ausführungsbeispielen beschrieben. Hierbei zeigen:
- Fig. 1
- einen Ansaugstutzen, der als Leitungsabschnitt in eine Ansaugvorrichtung integriert werden kann und Bohrungen in der Wand aufweist, im Längsschnitt,
- Fig. 2
- einen Ansaugstutzen bestehend aus zwei verschnappten Schalen, wobei entlang der Trennfuge Durchbrüche vorgesehen sind und
- Fig. 3
- den Längsschnitt durch einen Variodiffuser, angetrieben durch einen Motor, wobei das Stellelement als Wandteil mit Durchbrüchen ausgeführt ist.
- Fig. 1
- a suction nozzle, which can be integrated as a line section in a suction device and has bores in the wall, in longitudinal section,
- Fig. 2
- an intake manifold consisting of two snapped shells, openings being provided along the parting line and
- Fig. 3
- the longitudinal section through a vario diffuser, driven by a motor, wherein the actuating element is designed as a wall part with openings.
Der Figur 1 läßt sich der prinzipielle Aufbau eines Leitungsabschnittes 10, der zum
Einbau in eine Ansaugvorrichtung für eine Brennkraftmaschine geeignet ist,
entnehmen. Der Leitungsabschnitt wird als Rohluftansaugstutzen verwendet und
wirdmit Hilfe eines Flansches 11 an der Ansaugvorrichung befestigt. Die
Durchströmungsrichtung ist durch einen Pfeil angedeutet, wobei sich die kreisförmig
ausgeführten Querschnitte in Durchströmungsrichtung linear vergrößern. Hierdurch
kommt eine Diffusorwirkung des Leitungsabschnittes zustande. Eine Rohrwandung
12 ist mit vier Reihen von Bohrungen 13 versehen, wobei die Bohrungen einen
Querschnitt von jeweils kleiner als 7 mm2 aufweisen. Die so entstehenden
Lochreihen sind am Umfang der Rohrwandung um jeweils 90° versetzt angeordnet.1 shows the basic structure of a
Figur 2 stellt einen Querschnitt durch den Leitungsabschnitt 10 dar, der im
wesentlichen die selbe Geomtrie aufweist, wie der in der Figur 1 dargestellte. Der
Leitungsabschnitt gemäß Figur 2 besteht jedoch aus zwei Halbschalen 14, die durch
eine Schnappverbindung 15 miteinander verbunden sind. In einer Trennfuge 16
zwischen den Halbschalen 14 sind in regelmäßigen Abständen Vertiefungen
vorgesehen, die Durchbrüche 17 in der Rohrwandung erzeugen. Die
Schnappverbindungen 15 sind derart angeordnet, daß sie in einem Bereich
zwischen zwei Durchbrüchen an den Saugrohrschalen angreifen. Durch eine
entsprechende Gestaltung der Halbschalen 14 können diese in derselben Gußform
hergestellt werden. Dadurch können die Kosten für ein zweites Gußwerkzeug
eingespart werden.Figure 2 shows a cross section through the
Figur 3 zeigt die mögliche Ausgestaltung eines Variodiffusors 18. Dieser weist einen
rechteckigen Querschnitt auf. Dabei sind drei Wände des Querschnittes als starrer
Grundkörper 19 ausgebildet. Die vierte Wand besteht im wesentlichen aus einem
Stellelement 20 welches durch ein schematisch dargestellten Motor 21 angetrieben
wird. Das Stellelement ist im Grundkörper über ein Scharnier 22 drehbar gelagert.
Auf der gegenüberliegenden Seite ist das Stellelement 20 über einen flexiblen
Wandabschnitt 23 mit dem Grundkörper verbunden. Durch den motorischen Antrieb
wird das Stellelement um die Schamierachse bewegt, wodurch die lineare
Querschnittsveränderung des Variodiffusors 18 im Leitungsabschnitt 10 variiert
werden kann. Dabei schert das Stellelement entlang von Seitenwänden 24 des
Grundkörpers. Zwischen diesen beiden Bauteilen kann eine Dichtung vorgesehen
sein, oder es wird ein schmaler Dichtspalt vorgesehen. Dieser kann ähnlich wie die
im Stellelement 20 untergebrachten Durchbrüche 17 zur positiven Beeinflußung der
Ansaugakustik genutzt werden. Die Verbindung zwischen dem flexiblen
Wandabschnitt 23 jeweils mit dem Stellelement 20 und dem Grundkörper 19 kann z.
B. durch eine Klebeverbindung oder Anvulkanisieren erfolgen. FIG. 3 shows the possible configuration of a
- 1010
- Leitungsabschnittline section
- 1111
- Flanschflange
- 1212
- Rohrwandungpipe wall
- 1313
- Bohrungdrilling
- 1414
- Halbschalehalf shell
- 1515
- Schnappverbindungsnap
- 1616
- Trennfugeparting line
- 1717
- Durchbruchbreakthrough
- 1818
- VariodiffusorVario diffuser
- 1919
- Grundkörperbody
- 2020
- Stellelementactuator
- 2121
- Motorengine
- 2222
- Scharnierhinge
- 2323
- flexibler Wandabschnittflexible wall section
- 2424
- SeitenwandSide wall
Claims (6)
- Intake system for an internal combustion engine to be arranged in an engine chamber in which other components of the internal combustion engine are arranged; the said intake system comprising a conduit section (10) for guiding the intake air; the said conduit section being provided with at least a series of orifices (17) meeting the engine chamber, characterised in that the orifices present a cross section smaller than 7mm2 and
characterised in that the series of orifices is arranged along the flow direction of the pipe; the conduit section (10) being constituted by at least a mould part and the orifices being formed by the mould tools ; the said conduit sections (17) being accommodated in a joint (16) located between two mould parts of the conduit section (10) and the mould parts being inserted one to another by a clip connection . - Intake system according to claim 1, characterised in that the orifices (17) are round holes.
- Intake system according to one of the preceding claims, characterised in that the mould part is constituted of plastic .
- Intake system according to one of the preceding claims, characterised in that the mould parts have the form of half-shells (14).
- Intake system according to one of the preceding claims, characterised in that the conduit section (10) presents an increasing cross section in the flow direction .
- Intake system according to one of the preceding claims, characterised in that the cross section is realised variably at least on one part of the conduit section by an actuating element (20).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19903165 | 1999-01-27 | ||
| DE19903165A DE19903165A1 (en) | 1999-01-27 | 1999-01-27 | Suction device with a line section having openings |
| PCT/EP1999/008826 WO2000045044A1 (en) | 1999-01-27 | 1999-11-17 | Intake device having a conducting section which comprises orifices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1147304A1 EP1147304A1 (en) | 2001-10-24 |
| EP1147304B1 true EP1147304B1 (en) | 2003-07-23 |
Family
ID=7895530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99958058A Expired - Lifetime EP1147304B1 (en) | 1999-01-27 | 1999-11-17 | Intake device having a conducting section which comprises orifices |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6520284B2 (en) |
| EP (1) | EP1147304B1 (en) |
| AT (1) | ATE245767T1 (en) |
| DE (2) | DE19903165A1 (en) |
| ES (1) | ES2205911T3 (en) |
| WO (1) | WO2000045044A1 (en) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10144972C1 (en) * | 2001-09-12 | 2003-05-15 | Woco Franz Josef Wolf & Co Gmbh | Fluid guidance, in particular in the form of a raw air hose for sucking raw air into an air filter of a motor vehicle |
| US20050161280A1 (en) * | 2002-12-26 | 2005-07-28 | Fujitsu Limited | Silencer and electronic equipment |
| US20060258281A1 (en) * | 2005-05-12 | 2006-11-16 | Cripps Arthur B Jr | Air duct with annular rolling portion |
| JP2008231979A (en) * | 2007-03-19 | 2008-10-02 | Roki Co Ltd | Muffling chamber duct |
| JP4771546B2 (en) * | 2007-03-22 | 2011-09-14 | 株式会社Ｒｏｋｉ | Silencer duct |
| US8596398B2 (en) | 2007-05-16 | 2013-12-03 | Polaris Industries Inc. | All terrain vehicle |
| ITTO20070529A1 (en) * | 2007-07-17 | 2009-01-18 | Metallurg Cornaglia Sp A Off | SILENCER DEVICE FOR A CONDUCT TO BE TRAVELED BY A FLUID AND ITS METHOD OF REALIZATION. |
| US8162101B2 (en) * | 2008-09-19 | 2012-04-24 | Kawasaki Jukogyo Kabushiki Kaisha | Ram intake unit having a sound absorbing structure |
| US8994494B2 (en) | 2008-10-10 | 2015-03-31 | Polaris Industries Inc. | Vehicle security system |
| JP5404031B2 (en) * | 2008-12-26 | 2014-01-29 | 三菱重工業株式会社 | Grand Flare |
| US8240428B2 (en) * | 2009-12-01 | 2012-08-14 | Behr America Inc. | Aspirator with integral muffler |
| EP2384024A3 (en) * | 2010-04-30 | 2012-11-14 | Research In Motion Limited | Handset Leak-Tolerant Receiver |
| DE102010044399A1 (en) * | 2010-09-04 | 2012-03-08 | Deutz Ag | pipe |
| US10358187B2 (en) | 2014-01-10 | 2019-07-23 | Polaris Industries Inc. | Snowmobile |
| US9096289B2 (en) | 2012-02-09 | 2015-08-04 | Polaris Industries Inc. | Snowmobile |
| EP2938339B1 (en) | 2012-12-27 | 2020-08-19 | Massachusetts Eye & Ear Infirmary | Treatment of rhinosinusitis with p-glycoprotein inhibitors |
| US9845004B2 (en) | 2014-01-10 | 2017-12-19 | Polaris Industries Inc. | Snowmobile |
| FR3027995B1 (en) | 2014-11-05 | 2018-06-15 | Systemes Moteurs | DUCT INTEGRATING AN ACOUSTICAL ATTENUATION DEVICE |
| JP7085485B2 (en) | 2016-01-15 | 2022-06-16 | マサチューセッツ アイ アンド イヤー インファーマリー | Secretory P-glycoprotein is a non-invasive biomarker for chronic nasal sinusitis |
| US10793181B2 (en) | 2018-02-13 | 2020-10-06 | Polaris Industries Inc. | All-terrain vehicle |
| JP7107086B2 (en) * | 2018-08-13 | 2022-07-27 | トヨタ紡織株式会社 | Intake duct for internal combustion engine |
| JP7376525B2 (en) * | 2021-03-19 | 2023-11-08 | 豊田鉄工株式会社 | Internal combustion engine intake duct |
| US11912210B2 (en) | 2021-09-27 | 2024-02-27 | Mann+Hummel Gmbh | Space-saving broadband resonator having a resonator insert |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1642857U (en) * | 1951-01-18 | 1952-08-28 | Mann & Hummel Filter | INTAKE NOISE SILENCER FOR COMPRESSORS AND OTHER AIR SUCTION PISTON MACHINES. |
| US3712416A (en) * | 1971-11-26 | 1973-01-23 | Donaldson Co Inc | Air intake silencer |
| DE2239121A1 (en) * | 1972-08-09 | 1974-02-21 | Porsche Ag | COMBUSTION MACHINE |
| CA984693A (en) * | 1973-11-22 | 1976-03-02 | Bombardier Limited | Air intake silencer for a two-stroke internal combustion engine |
| SE445573B (en) * | 1982-09-08 | 1986-06-30 | Volzh Ob Proizv | AIR CLEANER WITH COMBUSTION ENGINE |
| DE9113807U1 (en) * | 1991-11-06 | 1991-12-19 | Filterwerk Mann & Hummel Gmbh, 7140 Ludwigsburg | Air filter for an internal combustion engine |
| DE19501981A1 (en) * | 1995-01-24 | 1996-07-25 | Mann & Hummel Filter | Noise damping tube, esp. for air induction tract of internal combustion engine |
| DE19615917A1 (en) * | 1996-04-22 | 1997-10-30 | Wolf Woco & Co Franz J | Intake silencer and motor vehicle |
| JP3562235B2 (en) * | 1997-07-03 | 2004-09-08 | 日産自動車株式会社 | Intake noise reduction device for internal combustion engine |
| DE29811432U1 (en) * | 1998-06-26 | 1998-09-03 | Filterwerk Mann & Hummel Gmbh, 71638 Ludwigsburg | Pipe system, especially intake manifold system for an internal combustion engine |
-
1999
- 1999-01-27 DE DE19903165A patent/DE19903165A1/en not_active Withdrawn
- 1999-11-17 ES ES99958058T patent/ES2205911T3/en not_active Expired - Lifetime
- 1999-11-17 DE DE59906397T patent/DE59906397D1/en not_active Expired - Fee Related
- 1999-11-17 EP EP99958058A patent/EP1147304B1/en not_active Expired - Lifetime
- 1999-11-17 AT AT99958058T patent/ATE245767T1/en not_active IP Right Cessation
- 1999-11-17 WO PCT/EP1999/008826 patent/WO2000045044A1/en active IP Right Grant
-
2001
- 2001-07-27 US US09/916,209 patent/US6520284B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US6520284B2 (en) | 2003-02-18 |
| DE19903165A1 (en) | 2000-08-03 |
| ATE245767T1 (en) | 2003-08-15 |
| DE59906397D1 (en) | 2003-08-28 |
| ES2205911T3 (en) | 2004-05-01 |
| US20020029927A1 (en) | 2002-03-14 |
| WO2000045044A1 (en) | 2000-08-03 |
| EP1147304A1 (en) | 2001-10-24 |
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