DE102005056011A1 - Internal combustion engine for motor vehicle, has exhaust system and exhaust gas turbocharger whereby disperse-outlet of turbine is connected with first exhaust gas flux - Google Patents
Internal combustion engine for motor vehicle, has exhaust system and exhaust gas turbocharger whereby disperse-outlet of turbine is connected with first exhaust gas flux Download PDFInfo
- Publication number
- DE102005056011A1 DE102005056011A1 DE102005056011A DE102005056011A DE102005056011A1 DE 102005056011 A1 DE102005056011 A1 DE 102005056011A1 DE 102005056011 A DE102005056011 A DE 102005056011A DE 102005056011 A DE102005056011 A DE 102005056011A DE 102005056011 A1 DE102005056011 A1 DE 102005056011A1
- Authority
- DE
- Germany
- Prior art keywords
- exhaust gas
- turbine
- internal combustion
- gas flow
- combustion engine
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
-
- 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
- F01N13/009—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 purifying devices arranged 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
- 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
- F01N13/009—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 purifying devices arranged in series
- F01N13/0093—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 purifying devices arranged in series the purifying devices are of the same type
-
- 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
- F01N13/011—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 purifying devices arranged in parallel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Supercharger (AREA)
Abstract
Description
Die Erfindung betrifft eine Brennkraftmaschine, insbesondere eines Kraftfahrzeugs, mit einer Abgasanlage und einem Abgasturbolader, der eine in der Abgasanlage angeordnete Turbine und einen von der Turbine angetriebenen Verdichter aufweist, wobei die Turbine einen Abström-Ausgang zum Abströmen von über ein Turbinenrad der Turbine strömendem Abgas und einen Wastegate-Ausgang zum überbrückenden Vorbeiströmen des Abgases an dem Turbinenrad der Turbine vorbei aufweist, gemäß dem Oberbegriff des Patentanspruchs 1.The The invention relates to an internal combustion engine, in particular a motor vehicle, with an exhaust system and an exhaust gas turbocharger, one in the Exhaust turbine arranged turbine and one driven by the turbine Compressor, wherein the turbine has an outflow output to the effluent from above a turbine wheel of the turbine is flowing Exhaust gas and a wastegate output for bypassing the bypass Exhaust gas has past the turbine wheel of the turbine, according to the preamble of claim 1
Zum Senken des Kraftstoffverbrauchs bei Brennkraftmaschinen werden verstärkt "Downsizingkonzepte" entwickelt und zum Einsatz gebracht. Der Begriff "Downsizing" meint, die Leistung eines großvolumigen, vielzylindrigen Motors mit einem hubraumkleinen Motor mit in der Regel weniger Zylindern durch zusätzliche Aufladung darzustellen. Durch die Hubraumreduktion ergibt sich durch eine Lastpunktverschiebung im Motorkennfeld hin zu besseren Wirkungsgraden in der Teillast ein Verbrauchsvorteil gegenüber dem leistungsgleichen Motor mit großem Hubraum und ohne Aufladung. Damit ein derartiger "Downsizing Motor" auch im instationären Betrieb ein akzeptabler Ersatz des "großen" Saugmotors, d.h. des Saugmotors mit großem Hubraum, ist, muss das sog. Turboloch vermieden werden. Dies kann beispielsweise kostenintensiv mit einem aufwändigen Aufladekonzept erreicht werden. Alternativ kann man einen einfachen, sehr kleinen Abgasturboladers (ATL) verwenden, der schon bei kleinen Massenströmen in der Lage ist hohe Druckverhältnisse aufzubauen und über entsprechend geringe Hochlaufzeiten bei Lastsprüngen verfügt. Nachteil einer solchen ATL-Auslegung ist das große Turbinendruckverhältnis des Laders bei hohen Massenströmen, wodurch sich das Abgas vor der Turbine stark aufstaut und einen entsprechend hohen Druck auf der Auslassseite des Motors verursacht. Dieses wiederum führt unweigerlich zu einer hohen Temperatur im Abgaskrümmer, die über eine entsprechende Gemischanfettung des Motors auf bauteilverträgliche Temperaturniveaus gekühlt werden muss.To the Lowering the fuel consumption of internal combustion engines are increasingly developed "downsizing concepts" and the Use brought. The term "downsizing" means the performance a large-volume, multi-cylinder engine with a small displacement engine with in the Usually represent fewer cylinders by additional charge. The displacement reduction results from a load point shift in the engine map to better efficiencies in the partial load a consumption advantage over the same engine with large capacity and without charging. In order for such a downsizing Motor "also in transient operation an acceptable replacement of the "big" suction motor, i. of Suction motor with large Displacement is, the so-called turbo lag must be avoided. This can For example, achieved costly with a complex charging concept become. Alternatively, you can use a simple, very small exhaust gas turbocharger (ATL) Use, even at low mass flows capable of high pressure conditions build and over correspondingly low startup times for load jumps. Disadvantage of such an ATL design is the big one Turbine pressure ratio the loader at high mass flows, whereby the exhaust gas accumulates heavily in front of the turbine and a correspondingly high pressure on the exhaust side of the engine. This in turn leads inevitably to a high temperature in the exhaust manifold, which has a Corresponding mixture enrichment of the engine for component-compatible temperature levels chilled must become.
Die Durchsatzfreudigkeit einer derartig kleinen Turbine des ATL kann durch eine starke Entdrosselung der Abgasleitung nach Turbinenaustritt erhöht werden. Aus Packagegründen lassen sich aber nicht beliebig dicke Rohrleitungen unter den Fahrzeugen verlegen. Moderne aufgeladene Motoren stoßen mittlerweile trotz ihres kleinen Hubraumes in die Leistungsklassen der hubraumstarken Saugmotoren vor, müssen aber mit einer einflutigen Abgasanlage auskommen, was zu einem entsprechend hohen Gegendruck nach der ATL-Turbine führt und, wie oben beschrieben, aus thermischen Gründen eine Gemischanfettung erfordert, was zu einem hohen Verbrauch im Betriebsbereich mit hohen Massenströmen führt.The Durchsatzfreudigkeit such a small turbine of the ATL can by a strong Entdrosselung the exhaust pipe to turbine outlet increase. For package reasons But you can not lay arbitrarily thick pipes under the vehicles. Modern supercharged engines thrive meanwhile, despite its small cubic capacity in the performance classes the high-displacement naturally aspirated engines, but must with a single-flow Exhaust system manage, resulting in a correspondingly high back pressure after the ATL turbine performs and, as described above, for thermal reasons a Gemischanfettung requires, resulting in high consumption in the operating area with high mass flows leads.
Aus
der
Der Erfindung liegt die Aufgabe zugrunde, eine Brennkraftmaschine der o.g. Art Kraftstoffverbrauch und Schadstoffemissionen zu verbessern.Of the Invention is the object of an internal combustion engine of above-mentioned Type of fuel consumption and pollutant emissions improve.
Diese Aufgabe wird erfindungsgemäß durch eine Brennkraftmaschine der o.g. Art mit den in Anspruch 1 gekennzeichneten Merkmalen gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den weiteren Ansprüchen beschrieben.These The object is achieved by a Internal combustion engine o.g. Type with the characterized in claim 1 Characteristics solved. Advantageous embodiments of the invention are in the other claims described.
Dazu ist es bei einer Brennkraftmaschine der o.g. Art erfindungsgemäß vorgesehen, dass der Abström-Ausgang der Turbine mit einer ersten Abgasflut und der Wastegate-Ausgang der Turbine mit einer von der ersten Abgasflut getrennten zweiten Abgasflut verbunden ist.To it is in an internal combustion engine o.g. Art provided according to the invention, that the outflow exit the turbine with a first exhaust gas flow and the wastegate output the turbine with a second separated from the first exhaust gas flow Exhaust gas is connected.
Dies hat den Vorteil, dass durch Reduzierung des Gegendruckes nach der Turbine mittels der zweiflutigen Ausgestaltung der Abgasanlage stromab der Turbine der Anfettungsbedarf des Motors reduziert und somit der Kraftstoffverbrauch an der Volllast und der hohen Teillast reduziert wird.This has the advantage that by reducing the back pressure after the Turbine by means of the twin-flow design of the exhaust system downstream the turbine reduces the fuming demand of the engine and thus reduced fuel consumption at full load and high part load becomes.
Dadurch, dass stromab der Turbine eine fluidleitende Verbindung zwischen der ersten Abgasflut und der zweiten Abgasflut ausgebildet ist, können sich Druck und Temperatur zwischen den beiden Abgasfluten aufteilen.Thereby, that downstream of the turbine, a fluid-conducting connection between the first exhaust gas flow and the second exhaust gas flow is formed, can Divide pressure and temperature between the two flue gases.
In einer bevorzugten Ausführungsform ist in der ersten Abgasflut und der zweiten Abgasflut stromab der Turbine jeweils wenigstens ein Katalysator angeordnet.In a preferred embodiment is in the first exhaust gas flow and the second exhaust gas flow downstream of the Turbine each arranged at least one catalyst.
Zweckmäßigerweise ist die fluidleitende Verbindung zwischen der ersten und zweiten Abgasflut stromab aller Katalysatoren in der ersten und zweiten Abgasflut oder stromauf des Katalysators in der ersten Abgasflut und stromab des Katalysators in der zweiten Abgasflut oder stromab des Katalysators in der ersten Abgasflut und stromauf des Katalysators in der zweiten Abgasflut oder stromab des Katalysators in der zweiten Abgasflut und zwischen zwei Katalysatoren in der ersten Abgasflut angeordnet.Conveniently, is the fluid-conducting connection between the first and second Exhaust gas flow downstream of all catalysts in the first and second exhaust gas flow or upstream of the catalyst in the first exhaust gas flow and downstream the catalyst in the second exhaust gas flow or downstream of the catalyst in the first exhaust gas flow and upstream of the catalyst in the second Exhaust gas flow or downstream of the catalyst in the second exhaust gas flow and disposed between two catalysts in the first exhaust gas flow.
Um Maßnahmen zum Heizen der Katalysatoren nach einem Kaltstart in den beiden Abgasfluten nutzen zu können, ist die fluidleitende Verbindung zwischen der ersten und zweiten Abgasflut stromauf aller Katalysatoren in der ersten und zweiten Abgasflut angeordnet.To measures for heating the cata- Toren after a cold start to be able to use in the two exhaust gas flows, the fluid-conducting connection between the first and second exhaust gas flow upstream of all catalysts in the first and second exhaust gas flow is arranged.
Die Erfindung wird im folgenden anhand der Zeichnung näher erläutert. Diese zeigt inThe The invention will be explained in more detail below with reference to the drawing. These shows in
Die
in
Die
Verwendung einer solchen zweiflutigen Abgasanlage erlaubt die Verwendung
einer kleineren Turbine
In
der ersten Abgasflut
Bei
Verwendung einer gleich großen ATL-Turbine
Um
die Forderungen nach immer schärferen Abgasgrenzwerten
erfüllen
zu können,
ist der zweite Katalysator
Über eine
Temperaturmesssonde im zweiten Katalysator
Als
alternative ist die Übersprechstelle
bzw. fluidleitende Verbindung
Die
Gemischregulierung erfolgt bei Verwendung einer solchen erfindungsgemäßen Abgasanlage
sinnvollerweise mit einer Lambdasonde stromauf der Wastegate-Abzweigung
oder mit zwei Lambdasonden, wobei je eine Sonde vor jedem Katalysator
Als
weitere Möglichkeit
bei Verwendung der erfindungsgemäßen zweiflutigen
Abgasanlage ergeben sich neue Möglichkeiten
bzgl. Sound-Design. Das ATL-Wastegate
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005056011A DE102005056011A1 (en) | 2005-11-24 | 2005-11-24 | Internal combustion engine for motor vehicle, has exhaust system and exhaust gas turbocharger whereby disperse-outlet of turbine is connected with first exhaust gas flux |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005056011A DE102005056011A1 (en) | 2005-11-24 | 2005-11-24 | Internal combustion engine for motor vehicle, has exhaust system and exhaust gas turbocharger whereby disperse-outlet of turbine is connected with first exhaust gas flux |
Publications (1)
Publication Number | Publication Date |
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DE102005056011A1 true DE102005056011A1 (en) | 2007-06-06 |
Family
ID=38047442
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DE102005056011A Withdrawn DE102005056011A1 (en) | 2005-11-24 | 2005-11-24 | Internal combustion engine for motor vehicle, has exhaust system and exhaust gas turbocharger whereby disperse-outlet of turbine is connected with first exhaust gas flux |
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DE (1) | DE102005056011A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007039003A1 (en) | 2007-08-17 | 2009-02-26 | Deutz Power Systems Gmbh & Co. Kg | Flow controlling device for use in gas pipe at internal-combustion engine, particularly at gas-operated internal combustion engine, for controlling of gas output, has regulating flap arranged on tilted flap wave |
DE102007051505A1 (en) | 2007-10-29 | 2009-04-30 | Volkswagen Ag | Internal combustion engine with exhaust gas turbocharger and intercooler |
DE102010005912A1 (en) | 2010-01-27 | 2011-07-28 | Dr. Ing. h.c. F. Porsche Aktiengesellschaft, 70435 | Method for sonic configuration in internal combustion engine of sports motor car, involves moving guide vanes towards extended position for increasing exhaust gas noise produced from engine when low load is required by engine |
US20160153337A1 (en) * | 2014-12-02 | 2016-06-02 | Hyundai Motor Company | Engine system having turbocharger |
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DE10233495A1 (en) * | 2002-07-24 | 2004-01-29 | Bayerische Motoren Werke Ag | Internal combustion engine comprises a bypass pipe opening into an exhaust pipe downstream of a catalyst |
DE19824476B4 (en) * | 1998-05-30 | 2005-09-01 | Daimlerchrysler Ag | Otto internal combustion engine with an exhaust gas turbocharger and method for operating such an internal combustion engine |
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2005
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DE2549934A1 (en) * | 1975-11-07 | 1977-05-12 | Porsche Ag | COMBUSTION MACHINE WITH AN EXHAUST TURBOCHARGER FORMED FROM AN EXHAUST TURBINE AND A CHARGER DRIVEN BY THIS |
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EP1243767A2 (en) * | 2001-03-23 | 2002-09-25 | Hitachi, Ltd. | Direct gasoline injection type spark igniting internal combustion engine with turbocharger and the engine control method |
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DE10233495A1 (en) * | 2002-07-24 | 2004-01-29 | Bayerische Motoren Werke Ag | Internal combustion engine comprises a bypass pipe opening into an exhaust pipe downstream of a catalyst |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007039003A1 (en) | 2007-08-17 | 2009-02-26 | Deutz Power Systems Gmbh & Co. Kg | Flow controlling device for use in gas pipe at internal-combustion engine, particularly at gas-operated internal combustion engine, for controlling of gas output, has regulating flap arranged on tilted flap wave |
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DE102007051505A1 (en) | 2007-10-29 | 2009-04-30 | Volkswagen Ag | Internal combustion engine with exhaust gas turbocharger and intercooler |
US8051842B2 (en) | 2007-10-29 | 2011-11-08 | Volkswagen Aktiengesellschaft | Internal combustion engine with an exhaust-gas turbocharger and a charge-air cooler and method for operating an internal combustion engine |
DE102010005912A1 (en) | 2010-01-27 | 2011-07-28 | Dr. Ing. h.c. F. Porsche Aktiengesellschaft, 70435 | Method for sonic configuration in internal combustion engine of sports motor car, involves moving guide vanes towards extended position for increasing exhaust gas noise produced from engine when low load is required by engine |
DE102010005912B4 (en) | 2010-01-27 | 2022-11-24 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Method for designing noise in an internal combustion engine |
US20160153337A1 (en) * | 2014-12-02 | 2016-06-02 | Hyundai Motor Company | Engine system having turbocharger |
CN105649726A (en) * | 2014-12-02 | 2016-06-08 | 现代自动车株式会社 | Engine system having turbocharger |
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