DE102016113756A1 - Silencer for single-cylinder diesel engine - Google Patents
Silencer for single-cylinder diesel engine Download PDFInfo
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- DE102016113756A1 DE102016113756A1 DE102016113756.1A DE102016113756A DE102016113756A1 DE 102016113756 A1 DE102016113756 A1 DE 102016113756A1 DE 102016113756 A DE102016113756 A DE 102016113756A DE 102016113756 A1 DE102016113756 A1 DE 102016113756A1
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- housing
- silencer
- muffler
- intermediate wall
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- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
- F01N3/2885—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices with exhaust silencers in a single housing
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- 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
- F01N1/006—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages comprising at least one perforated tube extending from inlet to outlet of the silencer
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- 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
- F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
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- 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
- F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
- F01N1/165—Silencing apparatus characterised by method of silencing by using movable parts for adjusting flow area
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- 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
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
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- 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
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
- F01N13/1844—Mechanical joints
- F01N13/1855—Mechanical joints the connection being realised by using bolts, screws, rivets or the like
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- 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
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1872—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal
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- 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
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
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- 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
- F01N1/026—Annular resonance chambers arranged concentrically to an exhaust passage and communicating with it, e.g. via at least one opening in the exhaust passage
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- 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
- F01N1/085—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using a central core throttling gas passage
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- 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
- F01N13/141—Double-walled exhaust pipes or housings
- F01N13/143—Double-walled exhaust pipes or housings with air filling the space between both walls
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- 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
- F01N2230/00—Combination of silencers and other devices
- F01N2230/04—Catalytic converters
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- 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
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/20—Exhaust treating devices having provisions not otherwise provided for for heat or sound protection, e.g. using a shield or specially shaped outer surface of exhaust device
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- 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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
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- 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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like
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- 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
- F01N2490/02—Two or more expansion chambers in series connected by means of tubes
- F01N2490/04—Two or more expansion chambers in series connected by means of tubes the gases flowing longitudinally from inlet to outlet only in one direction
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- 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
- F01N2490/02—Two or more expansion chambers in series connected by means of tubes
- F01N2490/06—Two or more expansion chambers in series connected by means of tubes the gases flowing longitudinally from inlet to outlet in opposite directions
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- 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
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- 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
- F01N2490/16—Chambers with particular shapes, e.g. spherical
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- 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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/06—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for hand-held tools or portables devices
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- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/103—Oxidation catalysts for HC and CO only
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
Abstract
Bei einem Schalldämpfer für Einzylinder-Dieselmotor mit integriertem Oxidationskatalysator ist vorgesehen, dass der Schalldämpfer am Zylinderkopf des Motors angeschlossen ist, dass das Schalldämpfergehäuse durch eine Zwischenwand (3) in zwei Kammern, nämlich eine Einström- und eine Ausströmkammer geteilt ist, und dass in der Zwischenwand (3) der Oxidationskatalysator (28) befestigt ist, derart, dass er beide Kammern strömungstechnisch miteinander verbindetIn a silencer for single-cylinder diesel engine with integrated oxidation catalyst is provided that the muffler is connected to the cylinder head of the engine, that the muffler housing is divided by an intermediate wall (3) into two chambers, namely an inflow and an outflow chamber, and that in the Partial wall (3) of the oxidation catalyst (28) is attached, such that it connects both chambers fluidly with each other
Description
Die Erfindung betrifft einen Schalldämpfer für einen Einzylinder-Dieselmotor mit Oxidationskatalysator.The invention relates to a silencer for a single-cylinder diesel engine with oxidation catalyst.
Derartige Antriebe werden bevorzugt eingesetzt zum Betreiben von Baumaschinen oder als stationäre Antriebe kleiner Leistung.Such drives are preferably used to operate construction equipment or as stationary drives low power.
Dabei sind die Anforderungen an die Reinigung/Entgiftung des Abgases unterschiedlich. Vielfach genügt die Behandlung des Abgases mittels Oxidationskatalysator, d. h. die Oxidation der CO-Bestandteile im Abgas zu CO2 sowie von Kohlenwasserstoffen zu CO2 und Wasser. The requirements for the cleaning / detoxification of the exhaust gas are different. In many cases, the treatment of the exhaust gas by means of oxidation catalyst, ie the oxidation of the CO components in the exhaust gas to CO 2 and of hydrocarbons to CO 2 and water is sufficient.
Im Falle der Nachrüstung eines Oxidationskatalysators bei einem bestehenden Einzylinder-Dieselmotor ist strukturmechanisch zu beachten, dass dem bestehenden Schalldämpfer ein Oxidationskatalysator zuzuordnen ist, ohne dass dabei die Eigenfrequenz des Gesamtaggregats verändert wird bei Vermeidung von ungünstigen Vibrationsbelastungen. Auf diese Weise gelingt es Schäden an dem mit dem Antriebsaggregat verbundenen Arbeitsgerät vorzubeugen.In the case of retrofitting an oxidation catalytic converter in an existing single-cylinder diesel engine is structurally observed that the existing silencer is an oxidation catalyst, without causing the natural frequency of the entire unit is changed while avoiding unfavorable vibration loads. In this way, it is possible to prevent damage to the working unit connected to the drive unit.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einen Oxidationskatalysator in geeigneter Weise mit einem Schalldämpfer zu kombinieren bei Vermeidung der genannten Nachteile, insbesondere einer Absenkung der Eigenfrequenz und der damit verbundenen resonanzbedingten Schäden.The present invention is therefore based on the object to combine an oxidation catalyst in a suitable manner with a silencer while avoiding the disadvantages mentioned, in particular a reduction in the natural frequency and the associated resonance-related damage.
Zur Lösung dieser Aufgabe ist erfindungsgemäß die Schaffung eines Schalldämpfers für Einzylinder-Dieselmotoren mit integriertem Oxidationskatalysator vorgesehen. Der Schalldämpfer ist dabei direkt am Zylinderkopf des Motors angeschlossen und der Oxidationskatalysator befindet sich im Inneren des Schalldämpfergehäuses, welches durch eine Zwischenwand in zwei Kammern geteilt ist. In dieser Zwischenwand ist der Oxidationskatalysator befestigt, derart dass er beide Kammern strömungstechnisch miteinander verbindet und dass die in Strömungsrichtung nachgeschaltete Ausströmkammer des Schalldämpfers mit dem Austrittsrohr für das nachbehandelte Abgas gasdicht verbunden ist.To achieve this object, the invention provides the creation of a muffler for single-cylinder diesel engines with integrated oxidation catalyst. The muffler is connected directly to the cylinder head of the engine and the oxidation catalyst is located inside the muffler housing, which is divided by an intermediate wall into two chambers. In this intermediate wall of the oxidation catalyst is attached, so that it connects both chambers fluidly with each other and that downstream in the flow direction outflow chamber of the muffler is gas-tightly connected to the outlet pipe for the aftertreated exhaust gas.
Auf diese Weise gelingt es, das durch den Oxidationskatalysator in den Schalldämpfer eingebrachte Mehrgewicht durch die Zwischenwand aufzunehmen und auf das gesamte Schalldämpfergehäuse zu verteilen. Dabei kann die Eigenfrequenz des Schalldämpfers innerhalb eines unkritischen Bereichs gehalten werden, so dass resonanzbedingte Schäden am Schalldämpfergehäuse bzw. der Gesamtvorrichtung, beispielsweise von in der Bauindustrie eingesetzten Rüttelplatten, vermieden werden.In this way, it is possible to take the introduced through the oxidation catalyst in the muffler extra weight through the partition and distribute it to the entire muffler housing. In this case, the natural frequency of the muffler can be kept within a non-critical range, so that resonance-related damage to the muffler housing or the overall device, for example of vibratory plates used in the construction industry, are avoided.
Beim Einsatz von Dieseloxidationskatalysatoren geht es um die Oxidation von Kohlenmonoxid (CO) zu Kohlendioxid (CO2) und von Kohlenwasserstoffen (CnHm) im Abgas zu Kohlendioxid (CO2) und Wasser. Die für die Oxidation vorteilhaften hohen Abgastemperaturen werden im Rahmen der vorliegenden Erfindung dadurch erhalten, dass der Schalldämpfer eine Flanschverbindung aufweist, mittels welcher er direkt am Zylinderkopf anschließbar ist.The use of diesel oxidation catalysts involves the oxidation of carbon monoxide (CO) to carbon dioxide (CO 2 ) and of hydrocarbons (C n H m ) in the exhaust gas to carbon dioxide (CO 2 ) and water. The advantageous for the oxidation high exhaust gas temperatures are obtained in the present invention, characterized in that the muffler has a flange, by means of which it is directly connected to the cylinder head.
In diesem Zusammenhang besteht eine besonders vorteilhafte Ausgestaltung darin, dass die Zwischenwand-Durchbrechungen für die gasdichte Durchführung von Montagerohren aufweist, welche das Schalldämpfergehäuse durchqueren und an ihren motorseitigen Enden an einen schalldämpferseitigen Anschlussflansch mit Zuordnung zu dessen Verbindungsbohrungen befestigt sind.In this context, a particularly advantageous embodiment is that the partition wall apertures for the gas-tight implementation of mounting ears, which traverse the muffler housing and are fastened at their motor-side ends to a muffler-side connecting flange with assignment to the connecting holes.
Eine robuste und schwingungsstabile Ausführungsform besteht erfindungsgemäß darin, dass der schalldämpferseitige Anschlussflansch an seinem Seitenumfang mit einer daran umlaufenden Ausprägung des Schalldämpfergehäuses gasdicht verschweißt ist.A robust and vibration-stable embodiment according to the invention is that the muffler-side connecting flange is welded gas-tight on its side circumference with a circumferential extent of the muffler housing surrounding it.
Die Zwischenwand selbst ist erfindungsgemäß gasdicht zwischen zwei gesonderten Gehäuseteilen des Schalldämpfergehäuses befestigt, nämlich einer dem Motor zugewandten Gehäuserückwand und einem Gehäusedeckel. Beide Gehäuseteile sind mit der Zwischenwand umlaufend verschweißt.The partition itself is according to the invention gas-tightly secured between two separate housing parts of the muffler housing, namely a motor-facing rear wall and a housing cover. Both housing parts are welded circumferentially to the intermediate wall.
Die Zwischenwand ist vorteilhaft schalenförmig mit konvexer Auswölbung gegen das in die Einströmkammer des Schalldämpfers einströmende Abgas ausgebildet. Dadurch ergibt sich eine Versteifung der Zwischenwand und damit eine verbesserte Aussteifung des gesamten Schalldämpfergehäuses.The intermediate wall is advantageously formed cup-shaped with convex bulge against the flowing into the inflow chamber of the muffler exhaust. This results in a stiffening of the intermediate wall and thus an improved stiffening of the entire muffler housing.
Der Katalysatorkörper selbst durchdringt die Zwischenwand in welcher er in einer Durchbrechung gasdicht aufgenommen ist. Das unbehandelte Abgas strömt damit aus der von der Gehäuserückwand gebildeten Einströmkammer durch den Katalysatorkörper hindurch in die durch den Gehäusedeckel getrennte Ausströmkammer und von dort als nachbehandeltes Abgas in das Austrittsrohr des Motors. The catalyst body itself penetrates the intermediate wall in which it is received gas-tight in an opening. The untreated exhaust gas thus flows from the inflow chamber formed by the rear wall of the housing through the catalyst body into the exhaust chamber separated by the housing cover and from there into the exhaust pipe of the engine as aftertreated exhaust gas.
Ein besonders stabiler Sitz des verschlossenen inneren Endes des Austrittsrohrs wird erfindungsgemäß dadurch erreicht, dass die Zwischenwand eine Durchbrechung für die gasdichte Aufnahme des inneren Endes des Austrittsrohrs aufweist.A particularly stable seat of the closed inner end of the outlet tube is inventively achieved in that the intermediate wall has an opening for the gas-tight reception of the inner end of the outlet tube.
Hierzu ist in weiterer vorteilhafter Ausgestaltung der Halterung des Austrittsrohrs im Inneren des Schalldämpfergehäuses vorgesehen, dass dessen inneres Ende in die Einströmkammer des Schalldämpfergehäuses hinein vorspringt und dort in einer zugeordneten Einprägung der Gehäuserückwand des Schalldämpfergehäuses verschieblich abgestützt ist.For this purpose, in a further advantageous embodiment of the holder of the outlet pipe is provided in the interior of the muffler housing, that its inner end in the inflow chamber of the muffler housing projects into it and there is slidably supported in an associated impression of the housing rear wall of the muffler housing.
Mit dem Ziel, Vibrationen des Schalldämpfergehäuses möglichst gering zu halten ist das Gehäuse selbst mit allseitig vorgesehenen Sicken und dergleichen Prägeformen der Gehäuseteile versehen, die nicht nur der Aussteifung dienen sondern auch die Vermeidung von Resonanzschwingungen begünstigen. Diesem Ziel dient auch die erfindungsgemäß perforierte Ausbildung des Austrittsrohrs in seinem Abschnitt innerhalb der Ausströmkammer des Schalldämpfergehäuses.With the aim of keeping vibrations of the muffler housing as low as possible, the housing itself is provided with all-round beads and the like embossing shapes of the housing parts, which not only serve the stiffening but also favor the avoidance of resonant vibrations. This purpose is also served by the inventively perforated design of the outlet tube in its section within the outflow chamber of the muffler housing.
Eine Ausführungsform der Erfindung wird im Folgenden anhand der Zeichnung beschrieben. Es zeigtAn embodiment of the invention will be described below with reference to the drawing. It shows
Die Figuren der Zeichnungen zeigen das Schalldämpfergehäuse mit Gehäuserückwand
Der Katalysatorkörper
Was die Formgestaltung des Schalldämpfergehäuses betrifft so sind dessen Gehäuserückwand
Es versteht sich von selbst, dass Einbauteile des Schalldämpfergehäuses welche die Gehäusewände bzw. die Zwischenwand durchstoßen in den jeweiligen Durchbrechungsbereichen gasdicht mit der Zwischenwand bzw. den Gehäusewänden verbunden sind, wozu üblicherweise Schweißverbindungen vorgesehen sind. Dies gilt für den Durchtritt des Katalysatorkörpers
In
Die Schnittdarstellungen gemäß den
Bei
Eine dazu alternative Lösung zeigt
Claims (10)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016113756.1A DE102016113756A1 (en) | 2016-07-26 | 2016-07-26 | Silencer for single-cylinder diesel engine |
EP17745150.7A EP3491221B1 (en) | 2016-07-26 | 2017-07-18 | Silencer for single-cylinder diesel engine |
JP2019503979A JP2019523361A (en) | 2016-07-26 | 2017-07-18 | Silencer for single cylinder diesel engine |
PCT/EP2017/068077 WO2018019650A1 (en) | 2016-07-26 | 2017-07-18 | Silencer for single-cylinder diesel engine |
US16/257,705 US20190170043A1 (en) | 2016-07-26 | 2019-01-25 | Muffler for single-cylinder diesel engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016113756.1A DE102016113756A1 (en) | 2016-07-26 | 2016-07-26 | Silencer for single-cylinder diesel engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102016113756A1 true DE102016113756A1 (en) | 2018-02-01 |
Family
ID=59409320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102016113756.1A Ceased DE102016113756A1 (en) | 2016-07-26 | 2016-07-26 | Silencer for single-cylinder diesel engine |
Country Status (5)
Country | Link |
---|---|
US (1) | US20190170043A1 (en) |
EP (1) | EP3491221B1 (en) |
JP (1) | JP2019523361A (en) |
DE (1) | DE102016113756A1 (en) |
WO (1) | WO2018019650A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19902915A1 (en) * | 1998-01-27 | 1999-07-29 | Kioritz Corp | Silencer for internal combustion engine |
DE10139700A1 (en) * | 2000-10-11 | 2002-04-18 | Stihl Maschf Andreas | Internal combustion engine for handheld tools has exhaust gas muffler with structure of oxygen rich exhaust gases storage |
DE102005037102A1 (en) * | 2004-08-06 | 2006-02-23 | Kioritz Corp. | Muffler mounted on a catalytic converter for an internal combustion engine |
JP2015143510A (en) * | 2014-01-31 | 2015-08-06 | ヤンマー株式会社 | Catalyst storage case, exhaust duct and engine |
Family Cites Families (10)
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JP3863939B2 (en) * | 1996-04-05 | 2006-12-27 | 株式会社共立 | 2-cycle engine muffler |
JP3752299B2 (en) * | 1996-04-05 | 2006-03-08 | 株式会社共立 | 2-cycle engine muffler |
JP2004183622A (en) * | 2002-12-06 | 2004-07-02 | Honda Motor Co Ltd | Exhaust silencer of internal combustion engine |
DE10304326A1 (en) * | 2003-02-04 | 2004-08-12 | Andreas Stihl Ag & Co. Kg | muffler assembly |
US20090013673A1 (en) * | 2005-01-28 | 2009-01-15 | Hiraoka Manufacturing Co.,Ltd | Muffler for small engine |
TWM333469U (en) * | 2007-09-12 | 2008-06-01 | Sentec E & Amp E Co Ltd | The improvement of the positioning fitting for the catalyst tubular core |
JP2009156158A (en) * | 2007-12-26 | 2009-07-16 | Husqvarna Zenoah Co Ltd | Muffler and catalyst device for engine |
JP5893926B2 (en) * | 2012-01-12 | 2016-03-23 | 富士重工業株式会社 | Muffler with built-in catalyst |
JP6295496B2 (en) * | 2014-03-28 | 2018-03-20 | 本田技研工業株式会社 | Exhaust system |
JP6106123B2 (en) * | 2014-04-15 | 2017-03-29 | 株式会社丸山製作所 | Muffler for internal combustion engine |
-
2016
- 2016-07-26 DE DE102016113756.1A patent/DE102016113756A1/en not_active Ceased
-
2017
- 2017-07-18 EP EP17745150.7A patent/EP3491221B1/en active Active
- 2017-07-18 JP JP2019503979A patent/JP2019523361A/en active Pending
- 2017-07-18 WO PCT/EP2017/068077 patent/WO2018019650A1/en unknown
-
2019
- 2019-01-25 US US16/257,705 patent/US20190170043A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19902915A1 (en) * | 1998-01-27 | 1999-07-29 | Kioritz Corp | Silencer for internal combustion engine |
DE10139700A1 (en) * | 2000-10-11 | 2002-04-18 | Stihl Maschf Andreas | Internal combustion engine for handheld tools has exhaust gas muffler with structure of oxygen rich exhaust gases storage |
DE102005037102A1 (en) * | 2004-08-06 | 2006-02-23 | Kioritz Corp. | Muffler mounted on a catalytic converter for an internal combustion engine |
JP2015143510A (en) * | 2014-01-31 | 2015-08-06 | ヤンマー株式会社 | Catalyst storage case, exhaust duct and engine |
Also Published As
Publication number | Publication date |
---|---|
EP3491221A1 (en) | 2019-06-05 |
WO2018019650A1 (en) | 2018-02-01 |
JP2019523361A (en) | 2019-08-22 |
US20190170043A1 (en) | 2019-06-06 |
EP3491221B1 (en) | 2021-03-17 |
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