DE3837677A1 - Silencer functioning at high operating temperatures, especially for a motor vehicle internal combustion engine - Google Patents
Silencer functioning at high operating temperatures, especially for a motor vehicle internal combustion engineInfo
- Publication number
- DE3837677A1 DE3837677A1 DE19883837677 DE3837677A DE3837677A1 DE 3837677 A1 DE3837677 A1 DE 3837677A1 DE 19883837677 DE19883837677 DE 19883837677 DE 3837677 A DE3837677 A DE 3837677A DE 3837677 A1 DE3837677 A1 DE 3837677A1
- Authority
- DE
- Germany
- Prior art keywords
- silencer
- combustion engine
- internal combustion
- housing
- motor vehicle
- 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.)
- Withdrawn
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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
-
- 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
- F01N1/08—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
-
- 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
- F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials
-
- 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
- F01N2310/00—Selection of sound absorbing or insulating material
- F01N2310/02—Mineral wool, e.g. glass wool, rock wool, asbestos or the like
-
- 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
- F01N2310/00—Selection of sound absorbing or insulating material
- F01N2310/04—Metallic wool, e.g. steel wool, copper wool or the like
-
- 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
- F01N2490/15—Plurality of resonance or dead chambers
- F01N2490/155—Plurality of resonance or dead chambers being disposed one after the other in flow direction
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
Die Erfindung betrifft einen Schalldämpfer gemäß dem Oberbegriff des Patentanspruchs 1. Durch eine mehrschalige oder mehrwandige Ausbildung des Schalldämpfergehäuses, wo bei zwischen den Wänden Mineralwolle oder ein anderer Dämmstoff angeordnet sein kann, wird eine wirksame Verringerung der Schallabstrahlung vom Schalldämpfer in das Äußere gewährleistet.The invention relates to a silencer according to the preamble of the claim 1. By a multi-layer or multi-walled design of the muffler housing, where mineral wool or other insulation material can be arranged between the walls, is an effective reduction in sound radiation from the muffler to the exterior guaranteed.
Wie sich gezeigt hat, kann beispielsweise bei einem Abgasschalldämpfer in den Zwischen raum zwischen den Gehäusewänden durch fertigungsbedingte Toleranzen insbesondere in Falzverbindungen vom Innenraum des Schalldämpfers her Kondensat (aus dem Abgas), ge gebenenfalls auch von außen aus der Umgebung Wasser eindringen. Bei den hohen Be triebstemperaturen kommt es in dem Zwischenraum dann zu schlagartigen Verdampfungs vorgängen, die ein explosionsartiges Bersten des Schalldämpfergehäuses zur Folge haben können.As has been shown, for example, in the case of an exhaust silencer space between the housing walls due to manufacturing tolerances, especially in Folded connections from the interior of the muffler condensate (from the exhaust gas), ge water may also penetrate from the outside from the surroundings. At the high Be operating temperatures, there is a sudden evaporation in the space processes that result in an explosive bursting of the silencer housing can.
Der Erfindung liegt die Aufgabe zugrunde, einen Schalldämpfer gemäß dem Oberbegriff des Anspruchs 1 unter Beibehalt seiner günstigen schalldämmenden Eigenschaften so aus zubilden, daß mit einfachen, billigen und großserienfreundlichen Maßnahmen eine Sicher heit gegen das Auftreten kritischer Druckspitzen in dem definierten Zwischenraum infol ge derartiger Verdampfungsvorgänge geschaffen ist.The invention has for its object a silencer according to the preamble of claim 1 while maintaining its favorable soundproofing properties to make sure that with simple, cheap and mass-production-friendly measures a safe against the occurrence of critical pressure peaks in the defined space such evaporation processes is created.
Die erfindungsgemäße Lösung besteht in den kennzeichnenden Merkmalen des Hauptan spruchs, vorteilhafte Ausbildungen der Erfindung beschreiben die Unteransprüche. The solution according to the invention consists in the characteristic features of the Hauptan Say, advantageous embodiments of the invention describe the dependent claims.
Insbesondere dann, wenn das Rückschlagventil im kondensatfreien Oberteil des Gehäuses angeordnet ist, bildet es auch bei seiner Ausbildung gemäß Anspruch 2 keine undichte Stelle im Normalbetrieb, durch die Kondensat in den Zwischenraum zwischen den Ge häusewänden eintritt, das zu einer Korrosion der üblicherweise feueraluminierten oder aluminiumplattierten äußeren Gehäusewand führen kann. Die Anordnung des Ventils in der aus Edelstahl gefertigten inneren Wand bietet gegenüber einer Unterbringung des Ventils in der äußeren Gehäusewand den Vorteil, daß die durch Feueraluminierung ge wonnene Schutzschicht der äußeren Wand (gegen Salzwasserkorrosion) nicht unterbro chen werden muß und auch bei Ausbildung nach Anspruch 2 aufgewirbeltes Wasser nicht von außen in den Zwischenraum zwischen den Gehäusewänden eindringen kann.Especially when the check valve is in the condensate-free upper part of the housing is arranged, it does not form leaks even in its training according to claim 2 Place in normal operation, through the condensate in the space between the Ge House walls occurs, which leads to corrosion of the usually fire-aluminized or aluminum-clad outer casing wall. The arrangement of the valve in the inner wall made of stainless steel offers an accommodation of the Valve in the outer housing wall has the advantage that the ge by fire aluminum The protective layer on the outer wall (against salt water corrosion) is not interrupted must be Chen and not whirled up water even when training according to claim 2 can penetrate from the outside into the space between the housing walls.
Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand der Zeichnung erläu tert, deren Fig. 1 einen horizontalen Längsschnitt, deren Fig. 2 den in Fig. 1 bei II-II angedeuteten Querschnitt und deren Fig. 3 eine Seitenansicht der innersten Ge häusewand wiedergeben.An embodiment of the invention is hereinafter tert tert with reference to the drawing, Fig. 1 shows a horizontal longitudinal section, Fig. 2 show the cross-section indicated in Fig. 1 at II-II and Fig. 3 is a side view of the innermost Ge housing wall.
Wie insbesondere aus Fig. 1 ersichtlich, besitzt der Schalldämpfer das doppelwandige Mantelgehäuse 1, enthaltend die innere Gehäusewand 2 aus Edelstahl und die äußere Gehäusewand 3 aus feueraluminiertem Material mit einer dazwischen angeordneten Mi neralwolle-Schicht 4. In der Resonanzkammer 5, die durch die Trennwand 6 von der mit Mineralwolle 7 gefüllten Kammer 8 getrennt ist, liegen die Ein- und Auslaßrohre 9, 10 und 11 nebeneinander; sie sind dort in der gekennzeichneten Weise mit kleinen Löchern ver sehen. In der in der Figur rechten Kammer 8 verlaufen nur die beiden Rohre 9 und 10; sie sind dort ebenfalls mit Löchern versehen und über den Löchern durch Stahlwolle 12 bzw. 13 abgedeckt.As can be seen in particular from FIG. 1, the muffler has the double-walled jacket housing 1 , containing the inner housing wall 2 made of stainless steel and the outer housing wall 3 made of fire-aluminized material with an intermediate mineral wool layer 4 . In the resonance chamber 5 , which is separated by the partition 6 from the chamber 8 filled with mineral wool 7 , the inlet and outlet pipes 9, 10 and 11 lie side by side; they are shown there with small holes in the way marked. Only the two pipes 9 and 10 run in the chamber 8 on the right in the figure; they are also provided with holes there and covered with steel wool 12 or 13 over the holes.
Beim Auftreten einer durch schlagartiges Verdampfen von Kondensat im Zwischenraum zwischen den Wänden 2 und 3 bedingten Druckspitze besteht die Gefahr, daß der Gehäu semantel 1 mechanisch beschädigt wird; im Extremfall kann dies zu einem Bersten die ses Gehäusemantels führen. Aus diesem Grund ist erfindungsgemäß in der oberen Hälfte der inneren Gehäusewand 2 ein nur bei Überdruck in dem Zwischenraum öffnendes und dabei eine Verbindung zwischen der Resonanzkammer 5 einerseits und dem die Mineral wolle 4 enthaltenden Zwischenraum zwischen den beiden Gehäusewänden 2 und 3 her stellendes Rückschlagventil 14 vorgesehen, das als wesentlichen Bestandteil den durch einen Stanzprozeß aus dem Material der inneren Gehäusewand 2 gewonnenen zungenför migen Ventilkörper 15 enthält. Dieser kann, wie bei 15′ angedeutet, auch eine andere geeignete Form besitzen. In the event of a sudden pressure evaporation of condensate in the space between the walls 2 and 3 , there is a risk that the housing semantel 1 is mechanically damaged; in extreme cases, this can cause the housing casing to rupture. For this reason, according to the invention, a check valve 14 is provided in the upper half of the inner housing wall 2, opening only when there is excess pressure in the intermediate space and thereby a connection between the resonance chamber 5 on the one hand and the mineral wool 4- containing intermediate space between the two housing walls 2 and 3 , which contains as an essential part the zungenför shaped valve body 15 obtained by a stamping process from the material of the inner housing wall 2 . This can, as indicated at 15 ' , also have another suitable shape.
Beim Auftreten einer gefährlich hohen Druckspitze in dem Zwischenraum schwenkt der zungenartige Ventilkörper 15 elastisch radial nach innen, wodurch während des Anste hens der Druckspitze eine Verbindung zur Kammer 5 und damit ein weitgehender Druck ausgleich hergestellt wird. In der Regel wird man mehrere derartige Sicherheitsventile vorzugsweise im weitgehend kondensatfreien oberen Teil des Gehäuses vorsehen.If a dangerously high pressure spike occurs in the intermediate space, the tongue-like valve body 15 swings elastically radially inwards, whereby a connection to the chamber 5 and thus a substantial pressure compensation is established during the pending pressure spike. As a rule, several such safety valves will preferably be provided in the largely condensate-free upper part of the housing.
Nach Abbau der gefährlichen Druckspitze kehrt der Ventilkörper 15 wieder in seine Schließlage zurück.After the dangerous pressure peak has been reduced, the valve body 15 returns to its closed position.
Mit der Erfindung ist also durch eine einfache, den Aufbau des Schalldämpfers im übri gen nicht beeinträchtigende Maßnahme eine Sicherheit gegen Beschädigungen des Schall dämpfers beim Auftreten von Druckspitzen im Zwischenraum zwischen seinen Gehäuse wänden geschaffen.With the invention is so by a simple, the construction of the muffler in the rest a measure against non-impairing safety against damage to the sound damper when pressure peaks occur in the space between its housing walls created.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883837677 DE3837677A1 (en) | 1987-11-17 | 1988-11-05 | Silencer functioning at high operating temperatures, especially for a motor vehicle internal combustion engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3738986 | 1987-11-17 | ||
DE19883837677 DE3837677A1 (en) | 1987-11-17 | 1988-11-05 | Silencer functioning at high operating temperatures, especially for a motor vehicle internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3837677A1 true DE3837677A1 (en) | 1989-06-01 |
Family
ID=25861893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19883837677 Withdrawn DE3837677A1 (en) | 1987-11-17 | 1988-11-05 | Silencer functioning at high operating temperatures, especially for a motor vehicle internal combustion engine |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3837677A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0625632A1 (en) * | 1993-05-18 | 1994-11-23 | Roth-Technik Gmbh | Exhaust gas silencer |
DE10060522A1 (en) * | 2000-12-06 | 2002-06-27 | Eberspaecher J Gmbh & Co | Exhaust silencer for a fuel-operated heater |
EP1321639A2 (en) * | 2001-12-18 | 2003-06-25 | Friedrich Boysen GmbH & Co. KG | Silencer arrangement |
US7004283B2 (en) * | 2000-04-14 | 2006-02-28 | J. Eberspächer GmbH & Co. KG | Multiple-chambered exhaust muffler |
US7506723B2 (en) * | 2005-09-01 | 2009-03-24 | J. Eberspaecher Gmbh & Co. Kg | Muffler for an exhaust gas system |
US7562741B2 (en) * | 2006-10-21 | 2009-07-21 | Dr. Ing. H.C. F. Porsche Ag | Rear muffler assembly |
US8684131B1 (en) * | 2012-12-12 | 2014-04-01 | Kia Motors Corporation | Dual muffler |
US20150047922A1 (en) * | 2012-04-02 | 2015-02-19 | Tenneco Gmbh | Muffler having coupling of a tailpipe by means of a coupling chamber |
US20180051608A1 (en) * | 2016-08-18 | 2018-02-22 | Hyundai Motor Company | Structure of muffler |
-
1988
- 1988-11-05 DE DE19883837677 patent/DE3837677A1/en not_active Withdrawn
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0625632A1 (en) * | 1993-05-18 | 1994-11-23 | Roth-Technik Gmbh | Exhaust gas silencer |
US7004283B2 (en) * | 2000-04-14 | 2006-02-28 | J. Eberspächer GmbH & Co. KG | Multiple-chambered exhaust muffler |
DE10060522A1 (en) * | 2000-12-06 | 2002-06-27 | Eberspaecher J Gmbh & Co | Exhaust silencer for a fuel-operated heater |
DE10060522B4 (en) * | 2000-12-06 | 2004-07-22 | J. Eberspächer GmbH & Co. KG | Exhaust silencer for a fuel-operated heater |
CZ298220B6 (en) * | 2000-12-06 | 2007-07-25 | J. Eberspächer Gmbh & Co. | Combustion product exhaust muffler for fuel-operated heating system |
EP1321639A2 (en) * | 2001-12-18 | 2003-06-25 | Friedrich Boysen GmbH & Co. KG | Silencer arrangement |
EP1321639A3 (en) * | 2001-12-18 | 2003-10-01 | Friedrich Boysen GmbH & Co. KG | Silencer arrangement |
US7506723B2 (en) * | 2005-09-01 | 2009-03-24 | J. Eberspaecher Gmbh & Co. Kg | Muffler for an exhaust gas system |
US7562741B2 (en) * | 2006-10-21 | 2009-07-21 | Dr. Ing. H.C. F. Porsche Ag | Rear muffler assembly |
US20150047922A1 (en) * | 2012-04-02 | 2015-02-19 | Tenneco Gmbh | Muffler having coupling of a tailpipe by means of a coupling chamber |
US9133753B2 (en) * | 2012-04-02 | 2015-09-15 | Tenneco Gmbh | Muffler having coupling of a tailpipe by means of a coupling chamber |
US8684131B1 (en) * | 2012-12-12 | 2014-04-01 | Kia Motors Corporation | Dual muffler |
US20180051608A1 (en) * | 2016-08-18 | 2018-02-22 | Hyundai Motor Company | Structure of muffler |
CN107762590A (en) * | 2016-08-18 | 2018-03-06 | 现代自动车株式会社 | The structure of silencer |
US10208639B2 (en) * | 2016-08-18 | 2019-02-19 | Hyundai Motor Company | Structure of muffler |
CN107762590B (en) * | 2016-08-18 | 2020-10-30 | 现代自动车株式会社 | Structure of silencer |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |