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EP3655634A1 - Exhaust gas system for an internal combustion engine - Google Patents

Exhaust gas system for an internal combustion engine

Info

Publication number
EP3655634A1
EP3655634A1 EP18729938.3A EP18729938A EP3655634A1 EP 3655634 A1 EP3655634 A1 EP 3655634A1 EP 18729938 A EP18729938 A EP 18729938A EP 3655634 A1 EP3655634 A1 EP 3655634A1
Authority
EP
European Patent Office
Prior art keywords
exhaust
exhaust gas
combustion engine
internal combustion
exhaust system
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.)
Granted
Application number
EP18729938.3A
Other languages
German (de)
French (fr)
Other versions
EP3655634B1 (en
Inventor
Uli Blümelhuber
Carina HÖFLER
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP3655634A1 publication Critical patent/EP3655634A1/en
Application granted granted Critical
Publication of EP3655634B1 publication Critical patent/EP3655634B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
    • 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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/007—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring oxygen or air concentration downstream of the exhaust apparatus
    • 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
    • F01N13/02—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 two or more separate silencers in series
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
    • F01N2560/025—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting O2, e.g. lambda sensors
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/14—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind
    • 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
    • F01N2590/04—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for motorcycles
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/148—Arrangement of sensors

Definitions

  • the invention relates to an exhaust system for an internal combustion engine of a Einspurgenes with the features of the preamble of
  • Offenlegungsschrift DE 10 2010 050 055 A1 discloses a method therefor.
  • the exhaust system before the catalyst two oxygen sensors and after the catalyst to another oxygen sensor whose signals are evaluated by a control unit.
  • Object of the present invention is to show a measure to avoid single-track vehicles above mentioned disadvantages.
  • the aim of the invention is to reduce the harmful emissions of
  • the first lambda probe as close as possible to the outlet of the internal combustion engine (close to the cylinder head). This distance should correspond to a maximum of ten times the diameter of the outlet opening in the cylinder head of the internal combustion engine.
  • the second lambda probe also called monitoring probe
  • the distance between the second lambda probe and the catalyst according to the invention should correspond to a maximum of four times the catalyst diameter. This allows a significantly better space utilization within the non-visible area of the EinspurGermanes.
  • the system should also be used in exhaust systems that use a muffler, in particular a pre-muffler. It can the
  • Figure 1 shows a plan view of an internal combustion engine with an exhaust system according to the invention.
  • FIG. 1 shows a plan view of an internal combustion engine 2 with an exhaust system 1 according to the invention for a single-track vehicle, such as
  • a motorcycle For example, a motorcycle, a moped, a Mokick or a moped.
  • the internal combustion engine 2 has a cylinder head 3, at whose unnumbered exhaust gas outlet an exhaust system 1 is arranged.
  • Exhaust system 1 consists essentially of an unnumbered
  • the first lambda probe 4 is located between the cylinder head 3 and an emission control system 5.
  • As a three-way catalyst is coated in the present embodiment of an additional, not numbered sheet metal dress as heat protection.
  • a flow direction of the exhaust gas is represented by two arrows.
  • a second lambda probe 6 (oxygen probe) is arranged in the exhaust system 1 after the exhaust gas purification device 5.
  • the second lambda probe 6 is at most four times the diameter of the exhaust gas purification system 5 of the
  • the diameter of the exhaust gas purification system 5 is the diameter of the catalytically coated monolith, without its sheath. The diameter is valid for the cross-section of circular emission control systems 5. In the case of exhaust gas purification systems 5 which are oval in cross-section, the distance of four times the largest diameter of the catalytically coated one applies
  • silencer arranged between the cylinder head 3 and the first lambda probe 4 a, not shown in the present embodiment.
  • This silencer is preferably a pre-silencer.
  • the cylinder-head-proximate positioning of the first lambda probe 4 means that the first lambda probe 4 is arranged at most ten times the diameter of the exhaust gas outlet in the cylinder head 3 away from the cylinder head 3 in the exhaust system 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Silencers (AREA)

Abstract

L'invention concerne un système d'échappement pour un moteur à combustion d'un véhicule à voie unique, ledit système d'échappement étant placé sur une sortie d'échappement d'une tête de cylindre du moteur à combustion et une première sonde lambda proche de la tête de cylindre étant prévue dans le système d'échappement, qui est placé dans le sens de l'échappement avant un dispositif d'épuration d'échappement, une deuxième sonde lambda étant prévue dans le système d'échappement dans le sens de l'échappement après le dispositif d'épuration d'échappement, ladite deuxième sonde lambda étant placée dans le système d'échappement au maximum à quatre fois du diamètre du dispositif d'épuration d'échappement en aval du dispositif d'épuration d'échappement. Grâce à cette configuration du système d'échappement pour un moteur à combustion d'un véhicule à voie unique, la sonde lambda est placée dans la zone non-vue du véhicule à voie unique, selon le contrôle simultané de la qualité de l'épuration d'échappement.The invention relates to an exhaust system for a combustion engine of a single-track vehicle, said exhaust system being placed on an exhaust outlet of a cylinder head of the combustion engine and a first lambda probe. close to the cylinder head being provided in the exhaust system, which is placed in the direction of the exhaust before an exhaust purification device, a second lambda probe being provided in the exhaust system in the direction of the exhaust after the exhaust purification device, said second lambda probe being placed in the exhaust system at most four times the diameter of the exhaust purification device downstream of the purification device of exhaust. With this exhaust system configuration for a combustion engine of a single-track vehicle, the lambda probe is placed in the non-sighted area of the single-track vehicle, according to the simultaneous control of the quality of the purification. exhaust.

Description

Abgasanlage für eine Brennkraftmaschine  Exhaust system for an internal combustion engine

Beschreibung description

Die Erfindung betrifft eine Abgasanlage für eine Brennkraftmaschine eines Einspurfahrzeuges mit den Merkmalen aus dem Oberbegriff des The invention relates to an exhaust system for an internal combustion engine of a Einspurfahrzeuges with the features of the preamble of

Patentanspruchs 1 . Patent claim 1.

Aus dem Kraftfahrzeugbau ist beispielsweise aus der Deutschen From the automotive industry, for example, from the Germans

Offenlegungsschrift DE 3 921 345 A1 eine Vorrichtung zum Verringern von Abgasschadstoffkomponenten einer Brennkraftmaschine bekannt. Die Brennkraftmaschine weist in ihrem Abgasstrang einen Katalysator, sowie zwei Sauerstoffsonden (Lambdasonden) auf. Die erste Sonde ist stromauf des Katalysators angeordnet, die zweite im Katalysator. Die Anordnung dieser zwei Sonden ermöglicht eine hohe Regelfrequenz unter Published patent application DE 3 921 345 A1 discloses an apparatus for reducing exhaust gas pollutant components of an internal combustion engine. The internal combustion engine has a catalytic converter in its exhaust gas line, as well as two oxygen sensors (lambda sensors). The first probe is located upstream of the catalyst, the second in the catalyst. The arrangement of these two probes allows a high control frequency below

Berücksichtigung des Katalysatorzustandes und unter Ausschluss von Wasserstoffquerempfindlichkeit. In dem, der zweiten Sonde Consideration of the catalyst state and excluding hydrogen cross sensitivity. In that, the second probe

nachgeschalteten Katalysator werden die von dieser Sonde erkannten, noch nicht vollständig umgesetzten Abgase restlos umgesetzt. Downstream of the catalyst recognized by this probe, not yet fully reacted exhaust gases are completely converted.

Für die Diagnose eines Abgaskatalysators und/oder eines Abgassensors eines Kraftfahrzeugverbrennungsmotors ist aus der Deutschen For the diagnosis of a catalytic converter and / or an exhaust gas sensor of a motor vehicle internal combustion engine is from the German

Offenlegungsschrift DE 10 2010 050 055 A1 ein Verfahren dafür bekannt. Hierfür weist die Abgasanlage vor dem Katalysator zwei Sauerstoffsensoren sowie nach dem Katalysator einen weiteren Sauerstoffsensor auf, deren Signale von einem Steuergerät ausgewertet werden. Offenlegungsschrift DE 10 2010 050 055 A1 discloses a method therefor. For this purpose, the exhaust system before the catalyst two oxygen sensors and after the catalyst to another oxygen sensor whose signals are evaluated by a control unit.

Zum weiteren technischen Umfeld wird auf die Deutsche Offenlegungsschrift DE 195 41 903 A1 hingewiesen. Aus dieser Offenlegungsschrift ist ein Überwachungssystem für die Abgasreinigung einer Brennkraftmaschine für ein Kraftfahrzeug bekannt, wobei zwei Lambdasonden vorgesehen sind, von denen eine stromauf und die andere beheizbare stromab des Katalysators angeordnet ist. Ausgehend von einem Kaltstart der Brennkraftmaschine wird im Wesentlichen bis zum Erreichen der Katalysatoranspringtemperatur (light- off-Temperatur) die ström abwärtige Sonde nicht beheizt, sondern zur Ermittlung der Abgastemperatur verwendet, wobei das Erreichen einer Mindesttemperatur binnen einer gewissen Zeitspanne überprüft wird. For further technical context, reference is made to the German published patent application DE 195 41 903 A1. From this publication, a monitoring system for the exhaust gas purification of an internal combustion engine for a motor vehicle is known, wherein two lambda probes are provided, one of which is arranged upstream and the other heatable downstream of the catalyst. Starting from a cold start of the internal combustion engine, the downstream probe is not heated substantially until it reaches the catalyst initiating temperature (light-off temperature), but is used to determine the exhaust gas temperature, wherein the reaching of a minimum temperature is checked within a certain period of time.

Diese bekannten Abgasreinigungsvorrichtungen sind jedoch ausschließlich für Kraftfahrzeuge vorgesehen, und können nicht ohne weiteres auf ein Einspurfahrzeug, wie beispielsweise ein Motorrad, ein Moped, ein Mokick oder ein Mofa übertragen werden. However, these known exhaust gas purification devices are intended exclusively for motor vehicles, and can not be easily transferred to a single-track vehicle, such as a motorcycle, a moped, a Mokick or a moped.

Um einen emissionsarmen Betrieb eines Motorrads mit einer To a low-emission operation of a motorcycle with a

Brennkraftmaschine zu gewährleisten, ist es notwendig, das von der It is necessary to ensure that of the internal combustion engine

Brennkraftmaschine produzierte Abgas über Abgasreinigungsanlage, wie z. B. einen Katalysator zu reinigen. Um dies effizient zu gestalten werden deshalb vor dem Katalysator bestimmte Werte des Abgases mit einer sogenannten Lambdasonde (Sauerstoffsonde) gemessen. Dabei findet jedoch keine Validierung zur Qualität der Abgasreinigung statt. Zudem ist dieser für Einspurfahrzeuge bekannte Stand der Technik bei weitem nicht ausreichend für zukünftige Abgasnormen wie beispielsweise der EU 5 Norm für Einspurfahrzeuge. In nachteiliger Weise ist bis heute keine Validierung der Qualität der Internal combustion engine produced exhaust gas via emission control system, such. B. to clean a catalyst. To make this efficient, therefore, certain values of the exhaust gas are measured in front of the catalyst with a so-called lambda probe (oxygen probe). However, there is no validation for the quality of the emission control. In addition, this known for single-track vehicles prior art is far from sufficient for future emission standards such as the EU 5 standard for single-track vehicles. Adversely, to date, no validation of the quality of

Abgasreinigung für Einspurfahrzeuge bekannt oder möglich. Diese erfüllen somit auch nicht zukünftige Abgasnormen wie beispielsweise die EU 5 Norm. Exhaust gas cleaning for single-track vehicles known or possible. These therefore do not meet future emission standards such as the EU 5 norm.

Aufgabe der vorliegenden Erfindung ist es, eine Maßnahme aufzuzeigen, um für Einspurfahrzeuge oben genannte Nachteile zu vermeiden. Object of the present invention is to show a measure to avoid single-track vehicles above mentioned disadvantages.

Diese Aufgabe wird durch die Merkmale im kennzeichnenden Teil des Patentanspruchs 1 gelöst. This object is solved by the features in the characterizing part of patent claim 1.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben. Advantageous developments of the invention are described in the subclaims.

Ziel der Erfindung ist es, die schädlichen Emissionen von The aim of the invention is to reduce the harmful emissions of

Brennkraftmaschinen für Einspurfahrzeuge, wie z. B. Motorräder weiter zu reduzieren. Dabei wird erfindungsgemäß die Qualität der Abgasreinigung während des Betriebs geprüft. Dies ist über eine ideale Platzierung von zwei Lambdasonden im Abgasstrom der Brennkraftmaschine realisiert. Internal combustion engines for single-track vehicles, such. B. Motorcycles continue to reduce. In this case, the quality of the exhaust gas purification is checked during operation according to the invention. This is realized via an ideal placement of two lambda probes in the exhaust gas stream of the internal combustion engine.

Die Strömungsmuster des Abgases, das direkt aus der Brennkraftmaschine austritt, sind auch aufgrund der Geometrie des Abgassystems The flow patterns of the exhaust gas exiting directly from the engine are also due to the geometry of the exhaust system

vergleichsweise kompliziert und weisen mit zunehmender Strömungslänge höhere Inhomogenität auf. Es ist dabei vorteilhaft, die erste Lambdasonde möglichst nah am Auslass der Brennkraftmaschine (zylinderkopfnah) zu platzieren. Dieser Abstand soll maximal dem zehnfachen des Durchmessers der Auslassöffnung im Zylinderkopf der Brennkraftmaschine entsprechen. comparatively complicated and have higher inhomogeneity with increasing flow length. It is advantageous to place the first lambda probe as close as possible to the outlet of the internal combustion engine (close to the cylinder head). This distance should correspond to a maximum of ten times the diameter of the outlet opening in the cylinder head of the internal combustion engine.

Zur Prüfung der Qualität der Abgasreinigung wird erfindungsgemäß die zweite Lambdasonde, auch Monitorsonde genannt, hinter dem Katalysator platziert, welche den gereinigten Abgasstrom misst. Dabei soll der Abstand zwischen der zweiten Lambdasonde und dem Katalysator erfindungsgemäß maximal dem vierfachen des Katalysatordurchmessers entsprechen. Dies erlaubt eine deutlich bessere Bauraumausnutzung innerhalb des nicht sichtbaren Bereichs des Einspurfahrzeuges. Insbesondere soll das System auch bei Abgassystemen eingesetzt werden, die einen Schalldämpfer, insbesondere einen Vorschalldämpfer verwenden. Dabei kann der In order to test the quality of the exhaust gas purification, according to the invention, the second lambda probe, also called monitoring probe, is placed behind the catalytic converter, which measures the purified exhaust gas flow. The distance between the second lambda probe and the catalyst according to the invention should correspond to a maximum of four times the catalyst diameter. This allows a significantly better space utilization within the non-visible area of the Einspurfahrzeuges. In particular, the system should also be used in exhaust systems that use a muffler, in particular a pre-muffler. It can the

Vorschalldämpfer zwischen der Brennkraftmaschine und ihrer Schwinge platziert werden. Dies gilt insbesondere für Downpipes und senkrecht durchströmte Abgasanlagenbauteile, wie z. B. Katalysatoren und Pre silencer between the engine and its swingarm are placed. This is especially true for downpipes and vertically flowed exhaust system components such. B. catalysts and

Schalldämpfer zwischen Hinterrad und Schwinge des Einspurfahrzeuges. Muffler between the rear wheel and the swingarm of the single-track vehicle.

Die erfindungsgemäße Ausgestaltung führt zu einer besseren The embodiment of the invention leads to a better

Abgasmessung und deshalb zu einem umweltfreundlicheren Betrieb des Einspurfahrzeuges. Darüber hinaus werden in vorteilhafter Weise zukünftige Abgasnormen erfüllt, bei gleichzeitiger Ausnutzung von vorhandenem Bauraum im nicht sichtbaren Bereich des Einspurfahrzeuges, was zu einer deutlich verbesserten Package-Verträglichkeit führt. Exhaust gas measurement and therefore to a greener operation of the Einspurfahrzeuges. In addition, future emission standards are met in an advantageous manner, while utilizing existing space in the non-visible area of Einspurfahrzeuges, resulting in a significantly improved package compatibility.

Im Folgenden ist die Erfindung anhand eines Ausführungsbeispiels in einer einzigen Figur näher erläutert. The invention is explained in more detail below with reference to an embodiment in a single figure.

Figur 1 zeigt eine Aufsicht auf eine Brennkraftmaschine mit einer erfindungsgemäßen Abgasanlage. Figure 1 shows a plan view of an internal combustion engine with an exhaust system according to the invention.

Figur 1 zeigt eine Aufsicht auf eine Brennkraftmaschine 2 mit einer erfindungsgemäßen Abgasanlage 1 für ein Einspurfahrzeug, wie FIG. 1 shows a plan view of an internal combustion engine 2 with an exhaust system 1 according to the invention for a single-track vehicle, such as

beispielsweise ein Motorrad, ein Moped, ein Mokick oder ein Mofa. For example, a motorcycle, a moped, a Mokick or a moped.

Die Brennkraftmaschine 2 weist einen Zylinderkopf 3 auf, an dessen nicht bezifferten Abgasauslass eine Abgasanlage 1 angeordnet ist. Die The internal combustion engine 2 has a cylinder head 3, at whose unnumbered exhaust gas outlet an exhaust system 1 is arranged. The

Abgasanlage 1 besteht im Wesentlichen aus einem nicht bezifferten Exhaust system 1 consists essentially of an unnumbered

Abgasrohr, in dem zylinderkopfnah eine erste Lambdasonde 4 Exhaust pipe, in the cylinder head near a first lambda probe. 4

(Sauerstoffsonde) angeordnet ist. Die erste Lambdasonde 4 befindet sich zwischen dem Zylinderkopf 3 und einer Abgasreinigungsanlage 5. Die Abgasreinigungsanlage 5, wie z. B. einem Dreiwege-Katalysator, ist im vorliegenden Ausführungsbeispiel von einem zusätzlichen, nicht bezifferten Blechkleid als Hitzeschutz ummantelt. Eine Strömungsrichtung des Abgases ist durch zwei Pfeile dargestellt. (Oxygen probe) is arranged. The first lambda probe 4 is located between the cylinder head 3 and an emission control system 5. The emission control system 5, such. As a three-way catalyst is coated in the present embodiment of an additional, not numbered sheet metal dress as heat protection. A flow direction of the exhaust gas is represented by two arrows.

In Strömungsrichtung des Abgases ist nach der Abgasreinigungsvorrichtung 5 eine zweite Lambdasonde 6 (Sauerstoffsonde) in der Abgasanlage 1 angeordnet. Erfindungsgemäß ist die zweite Lambdasonde 6 höchstens dem vierfachen Durchmesser der Abgasreinigungsanlage 5 von der In the flow direction of the exhaust gas, a second lambda probe 6 (oxygen probe) is arranged in the exhaust system 1 after the exhaust gas purification device 5. According to the invention, the second lambda probe 6 is at most four times the diameter of the exhaust gas purification system 5 of the

Abgasreinigungsanlage 5 entfernt in der Abgasanlage 1 angeordnet. Der Durchmesser der Abgasreinigungsanlage 5 ist der Durchmesser des katalytisch beschichteten Monolithen, ohne seiner Ummantelung. Der Durchmesser gilt für den Querschnitt kreisrunder Abgasreinigungsanlagen 5. Bei im Querschnitt ovalen Abgasreinigungsanlagen 5 gilt der Abstand des vierfachen des größten Durchmessers des katalytisch beschichteten Emission control system 5 arranged away in the exhaust system 1. The diameter of the exhaust gas purification system 5 is the diameter of the catalytically coated monolith, without its sheath. The diameter is valid for the cross-section of circular emission control systems 5. In the case of exhaust gas purification systems 5 which are oval in cross-section, the distance of four times the largest diameter of the catalytically coated one applies

Monolithen. Monolith.

In einer Weiterbildung der Erfindung ist zwischen dem Zylinderkopf 3 und der ersten Lambdasonde 4 ein, in dem vorliegenden Ausführungsbeispiel nicht dargestellter Schalldämpfer, angeordnet. Dieser Schalldämpfer ist bevorzugt ein Vorschalldämpfer. In one embodiment of the invention is between the cylinder head 3 and the first lambda probe 4 a, not shown in the present embodiment, silencer arranged. This silencer is preferably a pre-silencer.

Die zylinderkopfnahe Positionierung der ersten Lambdasonde 4 bedeutet, dass die erste Lambdasonde 4 höchstens den zehnfachen Durchmesser des Abgasauslasses in dem Zylinderkopf 3 von dem Zylinderkopf 3 entfernt in der Abgasanlage 1 angeordnet ist. The cylinder-head-proximate positioning of the first lambda probe 4 means that the first lambda probe 4 is arranged at most ten times the diameter of the exhaust gas outlet in the cylinder head 3 away from the cylinder head 3 in the exhaust system 1.

In einer weiteren Weiterbildung der Erfindung ist der Schalldämpfer zwischen der Brennkraftmaschine und einer Schwinge eines nicht dargestellten In a further embodiment of the invention, the muffler between the engine and a rocker of a not shown

Einspurfahrzeuges angeordnet. Die erfindungsgemäße Ausgestaltung der Abgasanlage 1 führt zu einer verbesserten Abgasmessung und somit zu einem deutlich Einspurfahrzeuges arranged. The inventive design of the exhaust system 1 leads to an improved exhaust gas measurement and thus to a clear

umweltfreundlicheren Betrieb der Brennkraftmaschine 2. Darüber hinaus ist es möglich zukünftige Abgasnormen, wie beispielsweise Euro 5, für Einspurfahrzeuge zu erfüllen. Besonders vorteilhaft ist die Ausnutzung von vorhandenem Bauraum im Nicht-Sichtbereich, bei bestmöglicher Package- Verträglichkeit. more environmentally friendly operation of the internal combustion engine 2. In addition, it is possible to meet future emission standards, such as Euro 5, for single-track vehicles. Particularly advantageous is the utilization of existing space in the non-viewing area, with the best possible package compatibility.

Bezugszeichenliste LIST OF REFERENCE NUMBERS

1 Abgasanlage 1 exhaust system

2 Brennkraftmaschine 2 internal combustion engine

3 Zylinderkopf 3 cylinder head

4 erste Lambdasonde 4 first lambda probe

5. Abgasreinigungsanlage5. Emission control system

6. zweite Lambdasonde 6. second lambda probe

Claims

Abgasanlage für eine Brennkraftmaschine Patentansprüche Exhaust system for an internal combustion engine claims 1 . Abgasanlage (1 ) für eine Brennkraftmaschine (2) eines 1 . Exhaust system (1) for an internal combustion engine (2) of a Einspurfahrzeuges, wobei die Abgasanlage (1 ) an einen Abgasauslass eines Zylinderkopfes (3) der Brennkraftmaschine (2) anordenbar ist und wobei eine zylinderkopfnahe erste Lambdasonde (4) in der  Einspurfahrzeuges, wherein the exhaust system (1) to an exhaust gas outlet of a cylinder head (3) of the internal combustion engine (2) can be arranged and wherein a cylinder near the first lambda probe (4) in the Abgasanlage (1 ) vorgesehen ist, die in Strömungsrichtung eines Abgases vor einer Abgasreinigungsanlage (5) angeordnet ist, wobei in Strömungsrichtung des Abgases nach der Abgasreinigungsanlage (5) eine zweite Lambdasonde (6) in der Abgasanlage (1 ) vorgesehen ist, dadurch gekennzeichnet, dass die zweite Lambdasonde (6) höchstens dem vierfachen Durchmesser der Abgasreinigungsanlage (5) von der Abgasreinigungsanlage (5) entfernt in der Abgasanlage (1 ) angeordnet ist.  Exhaust system (1) is provided, which is arranged in the flow direction of an exhaust gas in front of an exhaust gas purification system (5), wherein in the flow direction of the exhaust gas after the exhaust gas purification system (5) a second lambda probe (6) in the exhaust system (1) is provided, characterized the second lambda probe (6) is arranged at most four times the diameter of the emission control system (5) of the exhaust gas purification system (5) in the exhaust system (1). 2. Abgasanlage nach Anspruch 1 , 2. Exhaust system according to claim 1, dadurch gekennzeichnet, dass zwischen dem Zylinderkopf (3) und der ersten Lambdasonde (4) ein Schalldämpfer angeordnet ist. characterized in that a silencer is arranged between the cylinder head (3) and the first lambda probe (4). 3. Abgasanlage nach Patentanspruch 2, 3. Exhaust system according to claim 2, dadurch gekennzeichnet, dass der Schalldämpfer ein Vorschalldämpfer ist.  characterized in that the muffler is a pre-muffler. 4. Abgasanlage nach einem der Patentansprüche 1 bis 3, 4. Exhaust system according to one of the claims 1 to 3, dadurch gekennzeichnet, dass die erste Lambdasonde (4) höchstens dem zehnfachen Durchmesser des Abgasauslasses von dem  characterized in that the first lambda probe (4) is at most ten times the diameter of the exhaust gas outlet of the Zylinderkopf (3) entfernt in die Abgasanlage (1 ) angeordnet ist.  Cylinder head (3) located away in the exhaust system (1). 5. Einspurfahrzeug mit einer Abgasanlage nach einem der 5. Einspurfahrzeug with an exhaust system according to one of Patentansprüche 1 bis 4,  Claims 1 to 4, dadurch gekennzeichnet, dass der Schalldämpfer zwischen der Brennkraftmaschine und einer Schwinge des Einspurfahrzeuges angeordnet ist.  characterized in that the muffler is arranged between the internal combustion engine and a rocker of the single-track vehicle.
EP18729938.3A 2017-07-19 2018-06-06 Exhaust gas system for an internal combustion engine Active EP3655634B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017212307.9A DE102017212307A1 (en) 2017-07-19 2017-07-19 Exhaust system for an internal combustion engine
PCT/EP2018/064811 WO2019015845A1 (en) 2017-07-19 2018-06-06 Exhaust gas system for an internal combustion engine

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EP3655634A1 true EP3655634A1 (en) 2020-05-27
EP3655634B1 EP3655634B1 (en) 2023-05-03

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CN (1) CN110612384A (en)
DE (1) DE102017212307A1 (en)
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US11808187B2 (en) 2021-03-01 2023-11-07 Caterpillar Inc. Noise attenuation components

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WO2019015845A1 (en) 2019-01-24
EP3655634B1 (en) 2023-05-03
DE102017212307A1 (en) 2019-01-24
US20200049055A1 (en) 2020-02-13
US11421576B2 (en) 2022-08-23

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