DE719212C - Silencer for internal combustion engines, in which two perforated pipes in a housing serve as inlet and outlet pipes - Google Patents

Silencer for internal combustion engines, in which two perforated pipes in a housing serve as inlet and outlet pipes

Info

Publication number
DE719212C
DE719212C DEE53621D DEE0053621D DE719212C DE 719212 C DE719212 C DE 719212C DE E53621 D DEE53621 D DE E53621D DE E0053621 D DEE0053621 D DE E0053621D DE 719212 C DE719212 C DE 719212C
Authority
DE
Germany
Prior art keywords
silencer
inlet
pipes
housing
internal combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEE53621D
Other languages
German (de)
Inventor
Dr-Ing Herbert Martin
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.)
Eberspaecher Climate Control Systems GmbH and Co KG
Original Assignee
J Eberspaecher GmbH and Co KG
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 J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Priority to DEE53621D priority Critical patent/DE719212C/en
Application granted granted Critical
Publication of DE719212C publication Critical patent/DE719212C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • 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
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Description

Schalldämpfer für $rennkraftmaschinen, bei dem in einem Gehäuse zwei gelochte Rohre als Einlaß- bzw. Auslaßrohr dienen Die Erfindung betrifft einen Schalldämpfer für Brennkraftmaschinen, bei dem in einem Gehäuse zwei gelochte Rohre als Einlaß- bzw. Auslaßrohr dienen.Muffler for racing engines with two in one housing perforated tubes serve as inlet and outlet tubes. The invention relates to a silencer for internal combustion engines, in which two perforated tubes in a housing as inlet or outlet pipe serve.

Es sind Schalldämpfer bekannt, die in einfacher Weise dadurch wirken, daß von dem Motor abgehende Auspuffrohre in einem Hohlraum münden und hier die Gase aus Löchern. in den Hohlraum eintreten. Von dem Hohlraum aus gelangen dann die Gase in gleicher Weise in ein gelochtes Ausgangsrohr. Bei dieser Anordnung bilden. sich sowohl in der Eingangs- wie in der Ausgangsrohrl,eitung stehende Wellen aus '(Resonanzen), welche die Dämpfung begrenzen.There are known mufflers that act in a simple manner by that outgoing exhaust pipes from the engine open into a cavity and here the gases out of holes. enter the cavity. The gases then arrive from the cavity in the same way into a perforated outlet tube. Form with this arrangement. themselves standing waves from '(resonances) in both the inlet and outlet pipes, which limit the attenuation.

Erfindungsgemäß wird nun die Schalldämpfung so eingerichtet, :daß die Enden der beiden gelochten Rohre bis an- die Gehäusewand herangeführt und diese Enden mit außerhalb des Gehäuses angeordneten, mit Schallschluckstoff gefüllten Kappen verschlossen sind.According to the invention, the sound attenuation is now set up so that: that the ends of the two perforated tubes are brought up to the housing wall and these Ends with arranged outside the housing, filled with sound absorbing material Caps are closed.

In weiterer vorteilhafter Ausgestaltung der Erfindung ist vorgesehen, daß die mit Schallschluckstoff gefüllten Kappen abnehmbar sind.In a further advantageous embodiment of the invention it is provided that the caps filled with sound absorbent are removable.

Schließlich sind diese Kappen nach der Erfindung als Ü'berwurfmuttern oder anzuflanschende Hülsen ausgebildet, um jederzeit eine Auswechslung bzw. Reinigung des SchallschIuckstoffes zu -ermöglichen.Finally, according to the invention, these caps are designed as union nuts or sleeves to be flanged on, so that they can be replaced or cleaned at any time of the sound absorbing substance.

In der beiliegenden Zeichnung ist eine beispielsweise Ausbildung eines Schalldämpfers nach der Erfindung dargestellt.In the accompanying drawing is an example of a training Silencer shown according to the invention.

In einem Gehäuse sind zwei mit Löchern versehene Rohre vorgesehen. Durch das Rohr 2 treten die Abgase in das Gehäuseinnere ein, durch das Rohr 3 wieder aus. Das Rohr z ist an die Auspuffleitung angeschlossen und am rechten, also geschlossenen Ende mit Seballschluckstoff versehen. Dieser Verschluß kann z. B. so ausgeführt stein, daß eine Art überwurfmutter q., die den Schallschluckstoff 5 enthält, auf das Rohrende aufgeschraubt wird. Das Rohr 3, durch welches die Gase wieder abgeleitet werden, hat an seinem linken. Ende den Abschluß. Dieser ist in der Zeichnung so dargestellt, daß eine Hülse 6 mit einem Flansch 7 an :dem Gehäuse i befestigt ist. Die Hülse 6 enthält wieder Schallschluck Stoff 5. ..Two tubes provided with holes are provided in a housing. The exhaust gases enter the interior of the housing through pipe 2, by the tube 3 off again. The pipe z is connected to the exhaust line and on on the right, i.e. closed end, provided with Seball absorbent. This lock can e.g. B. so executed stone that a kind of union nut q. That the sound absorbent 5 contains, is screwed onto the pipe end. The pipe 3 through which the gases be derived again, has to his left. End the deal. This is in the drawing so shown that a sleeve 6 with a flange 7 on: the housing i is attached. The sleeve 6 again contains sound-absorbing substance 5. ..

Der Vorgang in dem erfindungsgemäßen Schalldämpfer ist etwa so: Die im Eintrittsrohr auftretenden Schallwellen würden bei einem geschlossenen Ende reflektiert werden und zu lautstarken Schwingungen führen. Durch Anbringung eines Schall absorbierenden Anschlußstückes erfolgt starke Schallschluckung, so .daß nur ein Teil der Schallwelle in. das Auslaßrohr eintritt. In: diesem ,erfolgt bekanntlich in der Austrittsöffnung eine Reflexion, die rücklaufende Schallwellen erzeugt, die wieder in dem am anderen Ende angebrachten Polster aus Schallschluckstoff aufgenommen werden. Wie Vergleichsversuche einwandfrei ergeben haben, ist der Lautstärkenunterschied etwa 6 bis S Phon, d. h. also, daß bei Anwendung dies :erfindungsgemäßen Schalldämpfers eine bedeutend bessere Dämpfung der Auspuffgeräusche erzielt wird.The process in the silencer according to the invention is something like this: The Sound waves occurring in the inlet pipe would be reflected at a closed end and lead to loud vibrations. By attaching a sound absorbent Connection piece takes place strong sound absorption, so .that only part of the sound wave in. the outlet pipe enters. In: this takes place, as is well known, in the outlet opening a reflection that creates returning sound waves that return in the one at the other End-attached pads made of sound-absorbing material can be added. Like comparison tests have shown correctly, the difference in volume is about 6 to S Phon, i.e. H. So that when using this: silencer according to the invention a significant better damping of the exhaust noise is achieved.

Claims (1)

PATENTANSPRÜCHE: i. Schalldämpfer für Brennkraftmaschinen, bei dem in einem Gehäuse zwei gelochte Rohre als Einlaß- bzw. Auslaßrohr dienen, dadurch gekennzeichnet, daß die Enden der beiden gelochten Rohre (z, 3) bis an die Gehäusewand heran geführt und diese Enden mit außerhalb des Gehäuses angeordneten, mit Schallschluckstoff gefüllten Kappen (4, 6) verschlossen sind. a. Schalldämpfer nach Anspruch i, da-.durch gekennzeichnet, daß die mit Schallschluckstoff (5) gefüllten Kappen abnehmbar sind. 3. Schalldämpfer nach Anspruch i und z, dadurch gekennzeichnet, daß die Kappen als überwurfmuttern (q.) oder anzuflanschende Hülsen (6) ausgebildet sind.PATENT CLAIMS: i. Silencer for internal combustion engines, in which two perforated tubes in a housing serve as inlet and outlet tubes, respectively characterized in that the ends of the two perforated tubes (z, 3) up to the housing wall brought up and these ends with arranged outside the housing, with sound absorbing material filled caps (4, 6) are closed. a. Silencer according to claim i, thereby characterized in that the caps filled with sound absorbing material (5) are removable. 3. Silencer according to claim i and z, characterized in that the caps as Union nuts (q.) or sleeves (6) to be flanged are designed.
DEE53621D 1940-05-09 1940-05-09 Silencer for internal combustion engines, in which two perforated pipes in a housing serve as inlet and outlet pipes Expired DE719212C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE53621D DE719212C (en) 1940-05-09 1940-05-09 Silencer for internal combustion engines, in which two perforated pipes in a housing serve as inlet and outlet pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE53621D DE719212C (en) 1940-05-09 1940-05-09 Silencer for internal combustion engines, in which two perforated pipes in a housing serve as inlet and outlet pipes

Publications (1)

Publication Number Publication Date
DE719212C true DE719212C (en) 1942-04-01

Family

ID=7081811

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE53621D Expired DE719212C (en) 1940-05-09 1940-05-09 Silencer for internal combustion engines, in which two perforated pipes in a housing serve as inlet and outlet pipes

Country Status (1)

Country Link
DE (1) DE719212C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970041C (en) * 1942-07-09 1958-08-14 Kloeckner Humboldt Deutz Ag Two-stroke internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970041C (en) * 1942-07-09 1958-08-14 Kloeckner Humboldt Deutz Ag Two-stroke internal combustion engine

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