DE654804C - Silencer for internal combustion engines - Google Patents
Silencer for internal combustion enginesInfo
- Publication number
- DE654804C DE654804C DEST55159D DEST055159D DE654804C DE 654804 C DE654804 C DE 654804C DE ST55159 D DEST55159 D DE ST55159D DE ST055159 D DEST055159 D DE ST055159D DE 654804 C DE654804 C DE 654804C
- Authority
- DE
- Germany
- Prior art keywords
- expansion chamber
- silencer
- internal combustion
- combustion engines
- channels
- 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
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
- F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Description
Die Erfindung bezieht sich auf eine Vorrichtung zur Schalldämpfung bei Brennkraftmaschinen, insbesondere für Kraftfahrzeuge u. dgl., und bezweckt eine besonders wirksame Dämpfung des Auspuffgeräusches bei freiem, ungehindertem Abfluß der Auspuffgase. The invention relates to a device for soundproofing in internal combustion engines, in particular for motor vehicles and the like, and aims to be particularly effective Attenuation of the exhaust noise with free, unhindered discharge of the exhaust gases.
Von den bekannten Schalldämpfern unterscheidet sich der Gegenstand der ErEndung im wesentlichen durch Aufteilung der Auspuffgase und der in denselben bestehenden Druckschwankungen in mehrere gekühlte, verschieden lange Kanäle, welche die Gase durch eine Dehnungskammer führen. Die Kanäle werden durch einen an. den Enden kegelförmig abgeschlossenen, als Dehnungskammer dienenden Einsatzkörper und einen Hohlrippenmantel, dessen innere Kanten die Außenwand der Dehnungskammer luftdicht berühren, gebildet. Das charakteristisch Neue ist darin zu 'erblicken, daß die Außenwand der Dehnungskammer -schräge, spiralenförmige Öffnungen aufweist, wodurch die Kanäle in verschiedene Längen geteilt werden.The subject of the invention differs from the known silencers essentially by dividing the exhaust gases and the pressure fluctuations existing in them into several cooled channels of different lengths, which lead the gases through an expansion chamber. The channels are connected by a. conically closed at the ends as an expansion chamber serving insert body and a hollow rib jacket, its inner edges the outer wall of the expansion chamber touch airtight, formed. That characteristic What is new can be seen in the fact that the outer wall of the expansion chamber is inclined, spiral-shaped Has openings, whereby the channels are divided into different lengths.
Dadurch wird erreicht, daß die durch die Kanäle geführten Auspuffgase, welche in denselben durch Kühlung ihr Volumen verringern, nacheinander (in zeitlichen Abständen voneinander) in die Dehnungskammer eintreten und durch die weitergeführten Kanäle (wieder in zeitlichen Abständen) zu dem Ausgang fließen. Die vor dem Eintritt der Auspuffgase in dem Schalldämpfer bestehenden Druckschwankungen werden durch diese Teilung vollkommen aufgehoben.This ensures that the exhaust gases passed through the ducts, which in the same reduce their volume by cooling, one after the other (at intervals of time) enter the expansion chamber and pass through the further channels (again at time intervals) to the exit. The one before the entry of the exhaust gases Pressure fluctuations existing in the silencer are completely canceled out by this division.
In der Zeichnung ist die Erfindung in einer Ausführungsform beispielsweise dargestellt.In the drawing, the invention is shown in one embodiment, for example.
Abb. ι zeigt einen Längsschnitt durch den Schalldämpfer.Fig. Ι shows a longitudinal section through the muffler.
Abb. 2 stellt einen Querschnitt nach der Linie A-B der Abb. 1 dar.Fig. 2 shows a cross section along the line AB in Fig. 1.
Der in der Zeichnung dargestellte Schalldämpfer α besteht aus dem kegelförmig abgeschlossenen Behälter b und dem Hohlrippenmantel c, an welchen zur Einführung und Ausführung der Gase die Endstücke d angeflanscht, geschweißt oder gefalzt sein können. Der Hohlrippenmantel c liegt mit seinen inneren Kanten luftdicht an der Außenwand des Einsatzkörpers b und bildet so die Kanäle e, Der als Dehnungskammer dienende Einsatzkörper b ist in seiner zylindrischen Wand durch schräge, spiralenförmige Öffnungen/ unterbrochen, so daß die Kanäle an den Stellen, an denen sie über diese Öffnungen/ führen, zur Dehnungskammer offen liegen. Diese Öffnungen bilden den Eingang und Ausgang der Auspuffgase zu und von der Dehnungskammer und teilen die Kanäle in Zuführungskanäle und Ableitungskanäle. Der gegen das Auspuffende gerichtete kegelförmige Abschluß der Dehnungskammer endet in einer Düseg", wodurch der Druck in der Dehnungskammer vermindert wird. The silencer α shown in the drawing consists of the conically closed container b and the hollow rib jacket c, to which the end pieces d can be flanged, welded or folded for the introduction and execution of the gases. The hollow fin surface c is located with its inner edge airtight on the outer wall of the insert body b, thus forming the channels e, of serving as an expansion chamber insert body b is in its cylindrical wall by oblique, spiral-shaped openings / interrupted, so that the channels at the points of which they lead through these openings / are open to the expansion chamber. These openings form the inlet and outlet of the exhaust gases to and from the expansion chamber and divide the ducts into supply ducts and discharge ducts. The conical closure of the expansion chamber directed towards the exhaust end ends in a nozzle, which reduces the pressure in the expansion chamber.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST55159D DE654804C (en) | Silencer for internal combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST55159D DE654804C (en) | Silencer for internal combustion engines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE654804C true DE654804C (en) | 1937-12-30 |
Family
ID=7467190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEST55159D Expired DE654804C (en) | Silencer for internal combustion engines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE654804C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE949974C (en) * | 1953-04-14 | 1956-09-27 | Friedrich Boysen | Silencer for pulsating currents, especially for the exhaust of motor vehicle internal combustion engines |
DE1037204B (en) * | 1953-12-11 | 1958-08-21 | Friedrich Boysen | Silencer for pulsating currents, especially for the exhaust of motorcycle engines |
WO1999058824A1 (en) * | 1998-05-14 | 1999-11-18 | Tom Erik Jacoby | Muffler for gas flows |
-
0
- DE DEST55159D patent/DE654804C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE949974C (en) * | 1953-04-14 | 1956-09-27 | Friedrich Boysen | Silencer for pulsating currents, especially for the exhaust of motor vehicle internal combustion engines |
DE1037204B (en) * | 1953-12-11 | 1958-08-21 | Friedrich Boysen | Silencer for pulsating currents, especially for the exhaust of motorcycle engines |
WO1999058824A1 (en) * | 1998-05-14 | 1999-11-18 | Tom Erik Jacoby | Muffler for gas flows |
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