Nothing Special   »   [go: up one dir, main page]

WO2007012414A1 - Shunt resonator for an intake line - Google Patents

Shunt resonator for an intake line Download PDF

Info

Publication number
WO2007012414A1
WO2007012414A1 PCT/EP2006/006908 EP2006006908W WO2007012414A1 WO 2007012414 A1 WO2007012414 A1 WO 2007012414A1 EP 2006006908 W EP2006006908 W EP 2006006908W WO 2007012414 A1 WO2007012414 A1 WO 2007012414A1
Authority
WO
WIPO (PCT)
Prior art keywords
shunt resonator
tubular connection
internal combustion
combustion engine
shunt
Prior art date
Application number
PCT/EP2006/006908
Other languages
German (de)
French (fr)
Inventor
Hans-Joachim Hecht
Original Assignee
Daimlerchrysler Ag
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 Daimlerchrysler Ag filed Critical Daimlerchrysler Ag
Publication of WO2007012414A1 publication Critical patent/WO2007012414A1/en

Links

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
    • F02M35/10—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
    • F02M35/10295—Damping means, e.g. tranquillising chamber to dampen air oscillations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/023—Helmholtz resonators
    • 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
    • F02M35/10314—Materials for intake systems
    • F02M35/10321—Plastics; Composites; Rubbers
    • 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
    • F02M35/10314—Materials for intake systems
    • F02M35/10334—Foams; Fabrics; Porous media; Laminates; Ceramics; Coatings
    • 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
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1272—Intake silencers ; Sound modulation, transmission or amplification using absorbing, damping, insulating or reflecting materials, e.g. porous foams, fibres, rubbers, fabrics, coatings or membranes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/14—Dead or resonance chambers connected to gas flow tube by relatively short side-tubes

Definitions

  • the invention relates to a shunt resonator for an intake manifold of an internal combustion engine according to the closer defined in the preamble of claim 1.
  • the invention further relates to an intake system for an internal combustion engine and an internal combustion engine.
  • a generic shunt resonator and a corresponding intake system are described in DE 197 43 482 Al.
  • Such shunt resonators are mounted on the intake pipe to suppress any pipe resonances and thus to reduce the noise level in the interior of a motor vehicle. They have a hollow chamber, which is connected via a short pipe section, which is also referred to as Resonatorhals, with the suction line.
  • the element of the invention which consists of a porous material within the tubular connection with which the cavity of the shunt resonator is connected to the suction line, resonance peaks can be reduced to such an extent that the sound radiation through the air filter housing has no influence on the interior noise of such a shunt resonator equipped motor vehicle has. In this way, so at high engine speeds, the interior noise can be significantly reduced, creating a significant comfort improvement for the user.
  • An intake system with at least one intake line and a shunt resonator according to the invention results from the features of claim 7.
  • an internal combustion engine is specified with such an intake system.
  • Showing: 1 shows an internal combustion engine with an intake system and a bypass resonator according to the invention attached to a suction line;
  • FIG. 2 is an enlarged sectional view of the shunt resonator of FIG. 1; FIG. and
  • Fig. 3 is a diagram in which the sound radiation of
  • Air filter housing is applied above the noise frequency within the intake manifold.
  • Fig. 1 shows in a very schematic representation of an internal combustion engine 1, to which an intake system 2 leads, which supplies the internal combustion engine 1 with fresh air.
  • the intake system 2 has an intake line 3, in which an air filter 4 is arranged in a manner known per se. Exhaust gases generated within the internal combustion engine 1 are discharged from the same by means of an exhaust system 5.
  • a shunt resonator 6 On the suction line 3, a shunt resonator 6 is mounted, which has a cavity 7 which is connected via a designated also as a resonator neck tubular connection 8 with the suction line 3.
  • the shunt resonator 6 serves to suppress a specific resonance frequency within the intake pipe 3.
  • an element 9 made of a porous material in the present case disc-shaped, is arranged within the tubular connection 8 , which reduces these resonance peaks so far that the sound radiation of the air filter 4 no longer affects the noise within a not shown, with the Internal combustion engine 1 equipped motor vehicle has.
  • various porous materials can be used for the disk-shaped element 9, foam has proven to be particularly suitable.
  • the disc-shaped element 9 is arranged substantially perpendicular to a central axis 10 of the tubular connection 8 of the shunt resonator 6 with the suction line 3.
  • the disk-shaped element 9 is further designed so that it substantially fills the cross-section of the tubular connection 8, wherein in the present case the tubular connection 8 and the element 9 have a substantially circular cross-section.
  • the disk-shaped element 9 has a thickness of 5 to 9 mm, preferably about 7 mm.
  • the disc-shaped element 9 can be fixed within the tubular connection 8 by means of suitable means.
  • the disk-shaped element 9 is arranged at the transition of the tubular connection 8 in the cavity 7, but it may in principle be arranged at any point within the tubular connection 8.
  • Fig. 3 the course of the sound radiation of the air filter 4 is shown on the sound frequency within the intake passage 3 by means of the dashed line when the shunt resonator 6 is completely omitted. It can be seen that in a range of about 175 Hz, a particularly high sound radiation is recorded. By means of the dotted line, the course of the sound radiation is shown when the shunt resonator 6 is used without the disc-shaped element 9. This results in maxima in the range of about 125 and about 240 Hz, in particular, the maximum in the range of about 240 Hz represents an approximately as high sound radiation as in the Dispensing with the shunt resonator 6.
  • the solid line shows the course of the sound radiation at the shunt resonator 6, in which the disk-shaped element 9 is located within the tubular connection 8.
  • a very homogeneous course can be seen, the maximum of which lies more than 5 dB below the maxima of the other two lines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Characterised By The Charging Evacuation (AREA)

Abstract

The invention relates to a shunt resonator for an intake line of an internal combustion engine. According to the invention, a shunt resonator (6) for an intake line (3) of an internal combustion engine (1) has a cavity (7) which is connected by means of a tubular connection (8) to the intake line (3), with an element (9) which is composed of a porous material being arranged within the tubular connection (8). The shunt resonator according to the invention is intended for internal combustion engines in motor vehicles.

Description

Nebenschlussresonator für eine Ansaugleitung Shunt resonator for a suction line
Die Erfindung betrifft einen Nebenschlussresonator für eine Ansaugleitung einer Brennkraftmaschine nach der im Oberbegriff von Anspruch 1 näher definierten Art. Des Weiteren betrifft die Erfindung eine Ansauganlage für eine Brennkraftmaschine sowie eine Brennkraftmaschine.The invention relates to a shunt resonator for an intake manifold of an internal combustion engine according to the closer defined in the preamble of claim 1. The invention further relates to an intake system for an internal combustion engine and an internal combustion engine.
Ein gattungsgemäßer Nebenschlussresonator sowie eine entsprechende Ansauganlage sind in der DE 197 43 482 Al beschrieben. Solche Nebenschlussresonatoren werden an der Ansaugleitung angebracht, um eventuelle Rohrresonanzen zu unterdrücken und damit das Geräuschniveau im Innenraum eines Kraftfahrzeugs zu senken. Sie weisen eine hohle Kammer auf, die über ein kurzes Rohrstück, welches auch als Resonatorhals bezeichnet wird, mit der Ansaugleitung verbunden ist.A generic shunt resonator and a corresponding intake system are described in DE 197 43 482 Al. Such shunt resonators are mounted on the intake pipe to suppress any pipe resonances and thus to reduce the noise level in the interior of a motor vehicle. They have a hollow chamber, which is connected via a short pipe section, which is also referred to as Resonatorhals, with the suction line.
Problematisch bei diesen bekannten Nebenschlussresonatoren ist jedoch, dass zwar die Rohrresonanz der Ansaugleitung unterdrückt wird, dass jedoch teilweise neueHowever, the problem with these known shunt resonators is that although the pipe resonance of the intake is suppressed, but that some new
Resonanzfrequenzen entstehen, die bei anderen Motordrehzahlen zu einer erhöhten Schallabstrahlung durch dasResonant frequencies arise at other engine speeds to increased sound radiation through the
Luftfiltergehäuse führen. Dies kann bei bestimmten Drehzahlen der Brennkraftmaschine zu einer Überhöhung des Geräuschs im Innenraum des Kraftfahrzeugs führen.Guide air filter housing. This can lead to an increase of the noise in the interior of the motor vehicle at certain speeds of the internal combustion engine.
Es ist daher Aufgabe der vorliegenden Erfindung, einen Nebenschlussresonator für eine Ansaugleitung einer Brennkraftmaschine zu schaffen, bei welchem über den gesamten Drehzahlbereich nur eine geringe Schallabstrahlung zu verzeichnen ist.It is therefore an object of the present invention to provide a shunt resonator for a suction line of a To provide internal combustion engine, in which over the entire speed range is recorded only a small sound radiation.
Erfindungsgemäß wird diese Aufgabe durch die in Anspruch 1 genannten Merkmale gelöst.According to the invention, this object is achieved by the features mentioned in claim 1.
Durch das erfindungsgemäße, aus einem porösen Material bestehende Element innerhalb der rohrartigen Verbindung, mit welcher der Hohlraum des Nebenschlussresonators mit der Ansaugleitung verbunden ist, können Resonanzüberhöhungen so weit reduziert werden, dass die Schallabstrahlung durch das Luftfiltergehäuse keinen Einfluss auf das Innengeräusch des mit einem solchen Nebenschlussresonator ausgestatteten Kraftfahrzeugs hat. Auf diese Weise kann also bei hohen Motordrehzahlen das Innengeräusch erheblich gesenkt werden, wodurch sich für den Benutzer eine erhebliche Komfortverbesserung einstellt.By virtue of the element of the invention, which consists of a porous material within the tubular connection with which the cavity of the shunt resonator is connected to the suction line, resonance peaks can be reduced to such an extent that the sound radiation through the air filter housing has no influence on the interior noise of such a shunt resonator equipped motor vehicle has. In this way, so at high engine speeds, the interior noise can be significantly reduced, creating a significant comfort improvement for the user.
Eine besonders effektive Reduzierung der Resonanzüberhöhungen wurde bei einer Ausführungsform beobachtet, bei der das innerhalb der rohrartigen Verbindung angeordnete Element aus Schaumstoff besteht.A particularly effective reduction of resonant peaks has been observed in an embodiment where the element disposed within the tubular connection is foam.
Eine Ansauganlage mit wenigstens einer Ansaugleitung und einem erfindungsgemäßen Nebenschlussresonator ergibt sich aus den Merkmalen von Anspruch 7.An intake system with at least one intake line and a shunt resonator according to the invention results from the features of claim 7.
In Anspruch 8 ist eine Brennkraftmaschine mit einer derartigen Ansauganlage angegeben.In claim 8, an internal combustion engine is specified with such an intake system.
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den restlichen Unteransprüchen. Nachfolgend ist ein Ausführungsbeispiel der Erfindung anhand der Zeichnung prinzipmäßig beschrieben.Advantageous embodiments and modifications of the invention will become apparent from the remaining dependent claims. Hereinafter, an embodiment of the invention will be described in principle with reference to the drawing.
Dabei zeigen: Fig. 1 eine Brennkraftmaschine mit einer Ansauganlage und einem an einer Ansaugleitung angebrachten, erfindungsgemäßen Nebenschlussresonator;Showing: 1 shows an internal combustion engine with an intake system and a bypass resonator according to the invention attached to a suction line;
Fig. 2 eine vergrößerte Schnittdarstellung des Nebenschlussresonators aus Fig. 1; undFIG. 2 is an enlarged sectional view of the shunt resonator of FIG. 1; FIG. and
Fig. 3 ein Diagramm, in dem die Schallabstrahlung desFig. 3 is a diagram in which the sound radiation of
Luftfiltergehäuses über der Schallfrequenz innerhalb der Ansaugleitung aufgetragen ist.Air filter housing is applied above the noise frequency within the intake manifold.
Fig. 1 zeigt in einer sehr schematischen Darstellung eine Brennkraftmaschine 1, zu welcher eine Ansauganlage 2 führt, welche die Brennkraftmaschine 1 mit Frischluft versorgt. Die Ansauganlage 2 weist im vorliegenden Fall eine Ansaugleitung 3 auf, in der in an sich bekannter Weise ein Luftfilter 4 angeordnet ist. Innerhalb der Brennkraftmaschine 1 erzeugte Abgase werden mittels einer Abgasanlage 5 aus derselben abgeführt .Fig. 1 shows in a very schematic representation of an internal combustion engine 1, to which an intake system 2 leads, which supplies the internal combustion engine 1 with fresh air. In the present case, the intake system 2 has an intake line 3, in which an air filter 4 is arranged in a manner known per se. Exhaust gases generated within the internal combustion engine 1 are discharged from the same by means of an exhaust system 5.
An der Ansaugleitung 3 ist ein Nebenschlussresonator 6 angebracht, welcher einen Hohlraum 7 aufweist, der über eine auch als Resonatorhals bezeichnete rohrartige Verbindung 8 mit der Ansaugleitung 3 verbunden ist. Der Nebenschlussresonator 6 dient zur Unterdrückung einer bestimmten Resonanzfrequenz innerhalb der Ansaugleitung 3.On the suction line 3, a shunt resonator 6 is mounted, which has a cavity 7 which is connected via a designated also as a resonator neck tubular connection 8 with the suction line 3. The shunt resonator 6 serves to suppress a specific resonance frequency within the intake pipe 3.
Um durch den Nebenschlussresonator 6 hervorgerufene Resonanzen im Bereich von anderen als der Resonanzfrequenz zu verhindern, ist, wie in dem Schnitt gemäß Fig. 2 zu erkennen, innerhalb der rohrartigen Verbindung 8 ein aus einem porösen Material bestehendes, im vorliegenden Fall scheibenförmig ausgebildetes Element 9 angeordnet, welches diese Resonanzüberhöhungen so weit reduziert, dass die Schallabstrahlung des Luftfilters 4 keinen Einfluss mehr auf das Geräusch innerhalb eines nicht dargestellten, mit der Brennkraftmaschine 1 ausgestatteten Kraftfahrzeugs hat. Obwohl prinzipiell verschiedene poröse Materialien für das scheibenförmige Element 9 verwendet werden können, hat sich Schaumstoff als besonders gut geeignet erwiesen. Im vorliegenden Fall ist das scheibenförmige Element 9 im Wesentlichen senkrecht zu einer Mittelachse 10 der rohrartigen Verbindung 8 des Nebenschlussresonators 6 mit der Ansaugleitung 3 angeordnet.In order to prevent resonance caused by the shunt resonator 6 in the range of other than the resonance frequency, as shown in the section according to FIG. 2, an element 9 made of a porous material, in the present case disc-shaped, is arranged within the tubular connection 8 , which reduces these resonance peaks so far that the sound radiation of the air filter 4 no longer affects the noise within a not shown, with the Internal combustion engine 1 equipped motor vehicle has. Although in principle various porous materials can be used for the disk-shaped element 9, foam has proven to be particularly suitable. In the present case, the disc-shaped element 9 is arranged substantially perpendicular to a central axis 10 of the tubular connection 8 of the shunt resonator 6 with the suction line 3.
Das scheibenförmige Element 9 ist des Weiteren so ausgeführt, dass es den Querschnitt der rohrartigen Verbindung 8 im Wesentlichen ausfüllt, wobei im vorliegenden Fall die rohrartige Verbindung 8 und das Element 9 einen im wesentlichen runden Querschnitt aufweisen. Bei der dargestellten Ansaugleitung 3 bzw. der rohrartigen Verbindung 8 weist das scheibenförmige Element 9 eine Dicke von 5 bis 9 mm, vorzugsweise ca. 7 mm, auf.The disk-shaped element 9 is further designed so that it substantially fills the cross-section of the tubular connection 8, wherein in the present case the tubular connection 8 and the element 9 have a substantially circular cross-section. In the illustrated suction line 3 or the tubular connection 8, the disk-shaped element 9 has a thickness of 5 to 9 mm, preferably about 7 mm.
Das scheibenförmige Element 9 kann innerhalb der rohrartigen Verbindung 8 mit Hilfe geeigneter Mittel fixiert werden. Im vorliegenden Fall ist das scheibenförmige Element 9 am Übergang der rohrartigen Verbindung 8 in dem Hohlraum 7 angeordnet, es kann jedoch prinzipiell an jeder Stelle innerhalb der rohrartigen Verbindung 8 angeordnet sein.The disc-shaped element 9 can be fixed within the tubular connection 8 by means of suitable means. In the present case, the disk-shaped element 9 is arranged at the transition of the tubular connection 8 in the cavity 7, but it may in principle be arranged at any point within the tubular connection 8.
In Fig. 3 ist mittels der gestrichelten Linie der Verlauf der Schallabstrahlung des Luftfilters 4 über der Schallfrequenz innerhalb der Ansaugleitung 3 dargestellt, wenn auf den Nebenschlussresonator 6 vollständig verzichtet wird. Hierbei ist zu erkennen, dass in einem Bereich von ca. 175 Hz eine besonders hohe Schallabstrahlung zu verzeichnen ist. Mittels der strichpunktierten Linie ist der Verlauf der Schallabstrahlung dargestellt, wenn der Nebenschlussresonator 6 ohne das scheibenförmige Element 9 verwendet wird. Hierbei ergeben sich Maxima im Bereich von ca. 125 und ca. 240 Hz, wobei insbesondere das Maximum im Bereich von ca. 240 Hz eine annähernd so hohe Schallabstrahlung darstellt wie bei dem Verzicht auf den Nebenschlussresonator 6. Die durchgezogene Linie zeigt den Verlauf der Schallabstrahlung bei dem Nebenschlussresonator 6, bei dem sich innerhalb der rohrartigen Verbindung 8 das scheibenförmige Element 9 befindet. Hierbei ist ein sehr homogener Verlauf zu erkennen, dessen Maximum um mehr als 5 dB unterhalb der Maxima der beiden anderen Linie liegt.In Fig. 3 the course of the sound radiation of the air filter 4 is shown on the sound frequency within the intake passage 3 by means of the dashed line when the shunt resonator 6 is completely omitted. It can be seen that in a range of about 175 Hz, a particularly high sound radiation is recorded. By means of the dotted line, the course of the sound radiation is shown when the shunt resonator 6 is used without the disc-shaped element 9. This results in maxima in the range of about 125 and about 240 Hz, in particular, the maximum in the range of about 240 Hz represents an approximately as high sound radiation as in the Dispensing with the shunt resonator 6. The solid line shows the course of the sound radiation at the shunt resonator 6, in which the disk-shaped element 9 is located within the tubular connection 8. Here, a very homogeneous course can be seen, the maximum of which lies more than 5 dB below the maxima of the other two lines.
Zu dem Diagramm von Fig. 3 ist anzumerken, dass es sich dabei um ein spezielles Beispiel einer bestimmten Brennkraftmaschine 1 handelt und dass sich bei anderen Brennkraftmaschinen vollkommen andere Werte bezüglich der Frequenzen und der Schallabstrahlung ergeben können. It should be noted with respect to the diagram of FIG. 3 that this is a specific example of a specific internal combustion engine 1 and that in the case of other internal combustion engines completely different values with regard to the frequencies and the sound emission can result.

Claims

Patentansprüche claims
1. Nebenschlussresonator für eine Ansaugleitung einer Brennkraftmaschine, welcher einen Hohlraum aufweist, der über eine rohrartige Verbindung mit der Ansaugleitung verbunden ist, dadurch gekennzeichnet, dass innerhalb der rohrartigen Verbindung (8) ein aus einem porösen Material bestehendes Element (9) angeordnet ist.1. shunt resonator for an intake manifold of an internal combustion engine, which has a cavity which is connected via a tubular connection with the suction line, characterized in that within the tubular connection (8) consisting of a porous material element (9) is arranged.
2. Nebenschlussresonator nach Anspruch 1, dadurch gekennzeichnet, dass das innerhalb der rohrartigen Verbindung (8) angeordnete Element (9) aus Schaumstoff besteht.Second shunt resonator according to claim 1, characterized in that within the tubular connection (8) arranged element (9) consists of foam.
3. Nebenschlussresonator nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das innerhalb der rohrartigen Verbindung (8) angeordnete Element (9) im Wesentlichen senkrecht zu einer Mittelachse (10) der rohrartigen Verbindung (8) angeordnet ist.3. shunt resonator according to claim 1 or 2, characterized in that within the tubular connection (8) arranged element (9) is arranged substantially perpendicular to a central axis (10) of the tubular connection (8).
4. Nebenschlussresonator nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass das innerhalb der rohrartigen Verbindung (8) angeordnete Element (9) den Querschnitt der rohrartigen Verbindung (8) im Wesentlichen ausfüllt. 4. shunt resonator according to claim 1, 2 or 3, characterized in that within the tubular connection (8) arranged element (9) substantially fills the cross section of the tubular connection (8).
5. Nebenschlussresonator nach Anspruch 4, dadurch gekennzeichnet, dass die rohrartige Verbindung (8) und das innerhalb der rohrartigen Verbindung (8) angeordnete Element (9) einen im Wesentlichen runden Querschnitt aufweisen.5. shunt resonator according to claim 4, characterized in that the tubular connection (8) and within the tubular connection (8) arranged element (9) have a substantially circular cross-section.
6. Nebenschlussresonator nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das innerhalb der rohrartigen Verbindung (8) angeordnete Element (9) eine Dicke von 5 bis 9 mm, vorzugsweise ca. 7 mm, aufweist.6. shunt resonator according to one of claims 1 to 5, characterized in that within the tubular connection (8) arranged element (9) has a thickness of 5 to 9 mm, preferably about 7 mm.
7. Ansauganlage mit wenigstens einer Ansaugleitung und mit einem Nebenschlussresonator nach einem der Ansprüche 1 bis 6.7. intake system with at least one suction line and with a shunt resonator according to one of claims 1 to 6.
8. Brennkraftmaschine mit einer Ansauganlage nach Anspruch 8. Internal combustion engine with an intake system according to claim
PCT/EP2006/006908 2005-07-26 2006-07-14 Shunt resonator for an intake line WO2007012414A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200520011669 DE202005011669U1 (en) 2005-07-26 2005-07-26 Bypass resonator for induction passage of internal combustion engine has element consisting of porous material installed inside connection between chamber of resonator and induction pipe
DE202005011669.6 2005-07-26

Publications (1)

Publication Number Publication Date
WO2007012414A1 true WO2007012414A1 (en) 2007-02-01

Family

ID=35070997

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/006908 WO2007012414A1 (en) 2005-07-26 2006-07-14 Shunt resonator for an intake line

Country Status (2)

Country Link
DE (1) DE202005011669U1 (en)
WO (1) WO2007012414A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019132163A (en) * 2018-01-30 2019-08-08 トヨタ自動車株式会社 Hose resonator connecting structure

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014217334A1 (en) 2014-08-29 2016-03-03 Mahle International Gmbh Shunt resonator for a fresh air system of an internal combustion engine
WO2018225078A1 (en) 2017-06-05 2018-12-13 Mahle Behr India Private Limited Charge-air cooler for a fresh-air system of an internal combustion engine
US20200080451A1 (en) * 2018-09-12 2020-03-12 Tmg Performance Products, Llc Method and apparatus for suppressing undesirable tones in an exhaust system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6013912A (en) * 1983-07-04 1985-01-24 Chiyoda Chem Eng & Constr Co Ltd Silencer
JPS6238815A (en) * 1985-08-14 1987-02-19 Yamaha Motor Co Ltd Silencer device for internal combustion engine
JPH02285686A (en) * 1989-04-27 1990-11-22 Matsushita Electric Ind Co Ltd Gas laser
US5493080A (en) * 1993-03-05 1996-02-20 Ab Volvo External arrangement for damping sounds in a pipe system
JPH1144266A (en) * 1997-07-29 1999-02-16 Toyota Motor Corp Resonator
JP2000205068A (en) * 1999-01-13 2000-07-25 Kobe Steel Ltd Noise eliminator for piping system
JP2004036778A (en) * 2002-07-04 2004-02-05 Kobe Steel Ltd Pressure pulsation absorber

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6013912A (en) * 1983-07-04 1985-01-24 Chiyoda Chem Eng & Constr Co Ltd Silencer
JPS6238815A (en) * 1985-08-14 1987-02-19 Yamaha Motor Co Ltd Silencer device for internal combustion engine
JPH02285686A (en) * 1989-04-27 1990-11-22 Matsushita Electric Ind Co Ltd Gas laser
US5493080A (en) * 1993-03-05 1996-02-20 Ab Volvo External arrangement for damping sounds in a pipe system
JPH1144266A (en) * 1997-07-29 1999-02-16 Toyota Motor Corp Resonator
JP2000205068A (en) * 1999-01-13 2000-07-25 Kobe Steel Ltd Noise eliminator for piping system
JP2004036778A (en) * 2002-07-04 2004-02-05 Kobe Steel Ltd Pressure pulsation absorber

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 132 (M - 385) 7 June 1985 (1985-06-07) *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 225 (M - 609) 22 July 1987 (1987-07-22) *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 058 (E - 1032) 12 February 1991 (1991-02-12) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 05 31 May 1999 (1999-05-31) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 10 17 November 2000 (2000-11-17) *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019132163A (en) * 2018-01-30 2019-08-08 トヨタ自動車株式会社 Hose resonator connecting structure
JP7088683B2 (en) 2018-01-30 2022-06-21 トヨタ自動車株式会社 Hose resonator connection structure

Also Published As

Publication number Publication date
DE202005011669U1 (en) 2005-09-29

Similar Documents

Publication Publication Date Title
EP1350945B1 (en) Air cleaner for an internal combustion engine
DE102011108871A1 (en) resonator
WO2008116870A1 (en) Helmholtz resonator
DE10042012A1 (en) Appliance for simulating sound characteristic of engine load in car interior uses vibrating membrane to convert exhaust gas pulsations into sound waves
DE4438556A1 (en) Filters, in particular for filtering the intake air of an internal combustion engine
WO2007012414A1 (en) Shunt resonator for an intake line
DE1476543A1 (en) Silencer
DE102004013654A1 (en) Air intake device for IC engines has air-permeable aperture, formed by porous PET element, in air intake section to connect it to its environment
DE102013108745A1 (en) Exhaust gas treatment unit
DE102013205960A1 (en) Air intake adjustment channel for multiple modes
EP1158590A2 (en) Fuel cell system
DE2640035A1 (en) EXHAUST DEVICE FOR COMBUSTION ENGINES FOR SUCTION OF SECONDARY AIR
DE102017206360B4 (en) Housing for a pneumatic control unit and pneumatic control unit
DE202011001554U1 (en) Exhaust assembly for use with an internal combustion engine
WO2003100764A1 (en) Device for modulating noise in a motor vehicle
DE10254631A1 (en) Exhaust silencer for internal combustion engine incorporates Helmholz resonator with tube concentrically surrounding through tube leading into reflection damping chamber
EP3796989A1 (en) Pouring filter
DE69607229T2 (en) Mineral wool absorbent element for noise reduction in an exhaust silencer, component therefor, its use and method of manufacture
DE10307979A1 (en) Passenger vehicle includes splash shield having two portions secured to one another defining air passageway in communication with engine
WO1999037906A1 (en) Air filter fitted with a silencer for internal combustion engines
DE19532751A1 (en) Silencer for induction tract of internal combustion engine
DE102021101104A1 (en) silencer
WO2016030055A1 (en) Shunt resonator for an air-intake installation of an internal combustion engine
WO2019185288A1 (en) Pouring filter
DE9402754U1 (en) Silencing backdrop for silencers in ventilation systems

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06762591

Country of ref document: EP

Kind code of ref document: A1