WO2010000391A1 - Twin-scroll exhaust gas turbo charger for an internal combustion engine - Google Patents

Twin-scroll exhaust gas turbo charger for an internal combustion engine Download PDF

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Publication number
WO2010000391A1
WO2010000391A1 PCT/EP2009/004389 EP2009004389W WO2010000391A1 WO 2010000391 A1 WO2010000391 A1 WO 2010000391A1 EP 2009004389 W EP2009004389 W EP 2009004389W WO 2010000391 A1 WO2010000391 A1 WO 2010000391A1
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Prior art keywords
exhaust gas
twin
scroll
internal combustion
combustion engine
Prior art date
Application number
PCT/EP2009/004389
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German (de)
French (fr)
Inventor
Günter KAPPLER
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Bayerische Motoren Werke Aktiengesellschaft
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Publication of WO2010000391A1 publication Critical patent/WO2010000391A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
    • F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
    • F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
    • 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
    • F02B37/02—Gas passages between engine outlet and pump drive, e.g. reservoirs
    • F02B37/025—Multiple scrolls or multiple gas passages guiding the gas to the pump drive
    • 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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F01N13/107—More than one exhaust manifold or exhaust collector
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/51—Inlet
    • 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

Definitions

  • the invention relates to a twin-scroll exhaust gas turbocharger for an internal combustion engine with the features of the preamble of patent claim 1.
  • a twin-scroll turbocharger for an internal combustion engine which has at least two cylinders, wherein the twin-scroll turbocharger a turbine housing with a Abgaseinlassflansch with two exhaust gas inlets, each having a Einströmquerites known.
  • Each exhaust inlet is provided for at least one cylinder of the internal combustion engine, wherein the exhaust gas inlets in the turbine housing extend around a turbine of the twin-scroll exhaust gas turbocharger as spiral channels.
  • the exhaust gas inlet openings are D-shaped, whereby a slight connection of an exhaust manifold is possible.
  • DE 10 2006 002 130 A1 it is proposed in DE 10 2006 002 130 A1 to introduce a recess into the web in the region of the fastening flange.
  • a disadvantage of the described embodiment is a relatively complex production of the turbine housing, in particular the Abgaseinlassflansches.
  • Object of the present invention is to show a turbine housing, which is easy to manufacture at the same time improved flow of the turbine with exhaust gases.
  • twin-scroll turbocharger according to the invention can be used by the embodiment according to claim 3 for each multi-cylinder internal combustion engine, regardless of the number of cylinders.
  • the embodiment according to claim 4 is a particularly preferred embodiment.
  • FIG. 1 shows a turbine housing of a twin-scroll exhaust gas turbocharger according to the invention.
  • FIG 2 shows the turbine housing of the twin-scroll turbocharger according to the invention with an exhaust manifold.
  • FIG. 3 shows a plan view of the flow channels of the twin-scroll turbocharger according to the invention.
  • Fig. 1 shows a turbine housing 1 of a twin-scroll exhaust gas turbocharger in three-dimensional view.
  • the turbine housing 1 has an exhaust flange 2 with two exhaust gas inlets 3, 4.
  • the exhaust gas inlets 3, 4 are substantially circular in shape.
  • the exhaust gas inlets 3, 4 in the exhaust gas inlet flange 2 are largely aligned next to one another in projection onto the spiral channels, which are not closer to one another, in the turbine housing 1 in the direction of extension of the spiral channels. This allows a particularly good flow of the turbine with exhaust gas.
  • FIG. 2 shows the turbine housing 1 according to the invention and an exhaust manifold 5 arranged on the turbine housing 1, likewise in a three-dimensional representation.
  • the exhaust manifold 5 is provided for a 4-cylinder internal combustion engine, wherein the exhaust gas inlets of the exhaust manifold 5 point to the cylinders Z1, Z2, Z3, Z4 of the internal combustion engine, not shown.
  • two cylinders Z1 and Z4 as well as Z2 and Z3 are combined to form a cylinder group, each of which is connected to an exhaust gas inlet 3, 4 for exhaust gas delivery.
  • the exhaust gases of internal combustion engines with a cylinder number unequal four cylinders to act on a twin-scroll turbocharger invention.
  • FIG. 3 shows a plan view of flow channels in the turbine housing 1 of the twin-scroll turbocharger according to the invention.
  • the exhaust gases flow into the exhaust gas inlets 3, 4 until the exhaust gas inlets 3, 4 at each channel transition 6, 7 in spiral channels 8, 9 pass and continue to drive in the spiral channels 8, 9 to a turbine, not shown around this. Further, at each exhaust gas inlet 3, 4, a bypass channel 10, 11 can be seen.
  • the channel transitions 6, 7 are arranged in this embodiment by 30 ° in the turbine housing 1 against each other rotated.
  • the effect of the invention is also in a range between 3 ° and 60 °.
  • the embodiment of the invention leads to a cost savings through a compact turbine housing design due to a material savings, especially in the area of the Abgaseinlassflansches 2.
  • the inventive design leads to an improvement in the efficiency of the turbine of the twin-scroll turbocharger by a very compact possible execution of the bypass, and by a unobstructed flow of the exhaust gas from the exhaust manifold 5 coming into the turbine housing 1.
  • a significant advantage is achieved by a cost savings in a chip-removing machining with respect to the machining of a conventional, difficult to machine double-D contour. Machining can be achieved in a simple manner, for example by milling, drilling, spindles, etc. consequences. Also a non-cutting production, for. B. with investment casting is possible.
  • circular contours at the interface to the exhaust manifold 5 save costs during chip removing machining.
  • Another advantage of the embodiment according to the invention is that circular contours have a positive effect with respect to strength stresses between the exhaust gas turbocharger and the exhaust manifold 5.
  • circular contours allow optimum gas guidance in the exhaust manifold 5 and the turbine housing 1, in particular in 4-cylinder internal combustion engines.

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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)
  • General Chemical & Material Sciences (AREA)
  • Supercharger (AREA)

Abstract

The invention relates to a twin-scroll exhaust gas turbo charger for an internal combustion engine, having at least two cylinders, wherein the twin-scroll exhaust gas turbo charger comprises a turbine housing (1) with an exhaust gas inlet flange (2) having two exhaust gas inlets (3, 4) with an inflow cross-section, wherein each exhaust gas inlet (3, 4) can be connected to a cylinder (Z1, Z2, Z3, Z4) in an exhaust gas conducting way, and wherein each exhaust gas inlet (3, 4) extends in the turbine housing (1) as a spiral channel around the turbine of the twin-scroll exhaust gas charger, wherein the inflow cross-sections are substantially circular. Due to the design according to the invention, the production of the twin-scroll exhaust gas charger is substantially simplified and the flow around the turbine is considerably improved.

Description

Twin-scroll-Abgasturbolader für eine Brennkraftmaschine Twin-scroll turbocharger for an internal combustion engine
Die Erfindung betrifft einen Twin-scroll-Abgasturbolader für eine Brennkraftmaschine mit den Merkmalen aus dem Oberbegriff des Patentanspruchs 1.The invention relates to a twin-scroll exhaust gas turbocharger for an internal combustion engine with the features of the preamble of patent claim 1.
Die Erfindung geht von der deutschen Offenlegungsschrift DE 10 2006 002 130 A1 aus. Aus dieser ist ein Twin-scroll-Abgasturbolader für eine Brennkraftmaschine bekannt, die zumindest zwei Zylinder aufweist, wobei der Twin-scroll-Abgasturbolader ein Turbinengehäuse mit einem Abgaseinlassflansch mit zwei Abgaseinlässen, die jeweils einen Einströmquerschnitt aufweisen, bekannt. Jeder Abgaseinlass ist für zumindest einen Zylinder der Brennkraftmaschine vorgesehen, wobei sich die Abgaseinlässe in dem Turbinengehäuse als Spiralkanäle um eine Turbine des Twin-scroll- Abgasturboladers herum erstrecken. Die Abgaseinströmöffnungen sind D- förmig ausgebildet, wodurch eine leichte Anbindung eines Abgaskrümmers möglich ist. Zur Vermeidung von Rissen in diesem Steg wird in der DE 10 2006 002 130 A1 vorgeschlagen, in den Steg, im Bereich des Befestigungsflansches eine Ausnehmung einzubringen.The invention is based on the German patent application DE 10 2006 002 130 A1. From this, a twin-scroll turbocharger for an internal combustion engine is known, which has at least two cylinders, wherein the twin-scroll turbocharger a turbine housing with a Abgaseinlassflansch with two exhaust gas inlets, each having a Einströmquerschnitt known. Each exhaust inlet is provided for at least one cylinder of the internal combustion engine, wherein the exhaust gas inlets in the turbine housing extend around a turbine of the twin-scroll exhaust gas turbocharger as spiral channels. The exhaust gas inlet openings are D-shaped, whereby a slight connection of an exhaust manifold is possible. In order to avoid cracks in this web, it is proposed in DE 10 2006 002 130 A1 to introduce a recess into the web in the region of the fastening flange.
Nachteilig bei der beschriebenen Ausgestaltung ist eine relativ aufwändige Fertigung des Turbinengehäuses, insbesondere des Abgaseinlassflansches. Aufgabe der vorliegenden Erfindung ist es, ein Turbinengehäuse aufzuzeigen, welches einfach zu fertigen ist bei gleichzeitig verbesserter Anströmung der Turbine mit Abgasen.A disadvantage of the described embodiment is a relatively complex production of the turbine housing, in particular the Abgaseinlassflansches. Object of the present invention is to show a turbine housing, which is easy to manufacture at the same time improved flow of the turbine with exhaust gases.
Diese Aufgabe wird durch das Merkmal im kennzeichnenden Teil des Patentanspruchs 1 gelöst.This object is achieved by the feature in the characterizing part of patent claim 1.
Aufgrund der weitgehend kreisrund ausgestalteten Einströmquerschnitte sind diese einerseits besonders einfach spanend, wie z. B. durch Fräsen, Bohren usw. oder auch spanlos, z. B. mit Gießverfahren, zu fertigen, wobei gleichzeitig eine stoßfreiere Anbindung der Abgasführenden Oberflächen an einen Abgaskrümmer möglich ist. Durch diese stoßfreiere Anbindung des Abgasturboladers an den Abgaskrümmer werden die Strömungsverluste minimiert, wodurch die Anströmung der Turbine des Abgasturboladers mit Abgas verbessert wird.Due to the largely circular configured inflow these are on the one hand particularly easy cutting, such. B. by milling, drilling, etc. or without cutting, z. As with casting, to manufacture, at the same time a bumpless connection of the exhaust-bearing surfaces is possible to an exhaust manifold. Through this bumpless connection of the exhaust gas turbocharger to the exhaust manifold, the flow losses are minimized, whereby the flow of the turbine of the exhaust gas turbocharger is improved with exhaust gas.
Durch die Anordnung der Abgaseinlässe gemäß Patentanspruch 2 ist die Geometrie des Abgaskrümmers einfacher festlegbar.Due to the arrangement of the exhaust gas inlets according to claim 2, the geometry of the exhaust manifold is easier to fix.
Der erfindungsgemäße Twin-scroll-Abgasturbolader kann durch die Ausgestaltung gemäß Patentanspruch 3 für jede mehrzylindrige Brennkraftmaschine eingesetzt werden, unabhängig von der Zylinderzahl.The twin-scroll turbocharger according to the invention can be used by the embodiment according to claim 3 for each multi-cylinder internal combustion engine, regardless of the number of cylinders.
Die Ausgestaltung gemäß Patentanspruch 4 ist eine besonders bevorzugte Ausführungsvariante.The embodiment according to claim 4 is a particularly preferred embodiment.
Die Ausgestaltung gem. Patentanspruch 5 verbessert nochmals die Anströmung der Turbine mit Abgas und verbessert den Wirkungsgrad des Abgasturboladers nochmals erheblich. Im Folgenden ist die Erfindung anhand eines besonders bevorzugten Ausführungsbeispieles in drei Figuren näher erläutert.The design acc. Claim 5 further improves the flow of the turbine with exhaust gas and improves the efficiency of the exhaust gas turbocharger again considerably. In the following the invention with reference to a particularly preferred embodiment in three figures is explained in more detail.
Fig. 1 zeigt ein Turbinengehäuse eines erfindungsgemäßen Twin- scroll-Abgasturboladers.1 shows a turbine housing of a twin-scroll exhaust gas turbocharger according to the invention.
Fig. 2 zeigt das Turbinengehäuse des erfindungsgemäßen Twin- scroll-Abgasturboladers mit einem Abgaskrümmer.2 shows the turbine housing of the twin-scroll turbocharger according to the invention with an exhaust manifold.
Fig. 3 zeigt eine Aufsicht auf die Strömungskanäle des erfindungsgemäßen Twin-scroll-Abgasturboladers.3 shows a plan view of the flow channels of the twin-scroll turbocharger according to the invention.
Fig. 1 zeigt ein Turbinengehäuse 1 eines Twin-scroll-Abgasturboladers in dreidimensionaler Aufsicht. Das Turbinengehäuse 1 weist einen Abgasflansch 2 auf mit zwei Abgaseinlässen 3, 4. Erfindungsgemäß sind die Ab- gaseinlässe 3, 4 weitgehend kreisrund ausgeformt. In diesem besonders bevorzugten Ausführungsbeispiel sind die Abgaseinlässe 3, 4 in dem Abgaseinlassflansch 2 in Projektion auf die nicht näher erkennbaren Spiralkanäle in dem Turbinengehäuse 1 in Erstreckungsrichtung der Spiralkanäle weitgehend nebeneinander ausgerichtet. Dies ermöglicht eine besonders gute Anströmung der Turbine mit Abgas.Fig. 1 shows a turbine housing 1 of a twin-scroll exhaust gas turbocharger in three-dimensional view. The turbine housing 1 has an exhaust flange 2 with two exhaust gas inlets 3, 4. According to the invention, the exhaust gas inlets 3, 4 are substantially circular in shape. In this particularly preferred exemplary embodiment, the exhaust gas inlets 3, 4 in the exhaust gas inlet flange 2 are largely aligned next to one another in projection onto the spiral channels, which are not closer to one another, in the turbine housing 1 in the direction of extension of the spiral channels. This allows a particularly good flow of the turbine with exhaust gas.
Fig. 2 zeigt das erfindungsgemäße Turbinengehäuse 1 sowie einen an das Turbinengehäuse 1 angeordneten Abgaskrümmer 5 in ebenfalls dreidimensionaler Darstellung. Der Abgaskrümmer 5 ist für eine 4-zylindrige Brennkraftmaschine vorgesehen, wobei die Abgaseinlässe des Abgaskrümmers 5 zu den Zylindern Z1 , Z2, Z3, Z4 der nicht dargestellten Brennkraftmaschine weisen. Weiter sind jeweils zwei Zylinder, Z1 und Z4 sowie Z2 und Z3 zu einer Zylindergruppe zusammengefasst, die jeweils abgasführend mit einem Ab- gaseinlass 3, 4 verbunden sind. In anderen Ausführungsbeispielen ist es auch möglich mit den Abgasen von Brennkraftmaschinen mit einer Zylinder- zahl ungleich vier Zylinder einen erfindungsgemäßen Twin-scroll- Abgasturbolader zu beaufschlagen. In einem weiteren, besonders bevorzugten Ausführungsbeispiel weist zumindest ein Abgaseinlass 3, 4, bzw. das Turbinengehäuse 1 stromab der Abgaseinlässe 3, 4 einen Bypass auf.FIG. 2 shows the turbine housing 1 according to the invention and an exhaust manifold 5 arranged on the turbine housing 1, likewise in a three-dimensional representation. The exhaust manifold 5 is provided for a 4-cylinder internal combustion engine, wherein the exhaust gas inlets of the exhaust manifold 5 point to the cylinders Z1, Z2, Z3, Z4 of the internal combustion engine, not shown. In addition, two cylinders Z1 and Z4 as well as Z2 and Z3 are combined to form a cylinder group, each of which is connected to an exhaust gas inlet 3, 4 for exhaust gas delivery. In other embodiments, it is also possible with the exhaust gases of internal combustion engines with a cylinder number unequal four cylinders to act on a twin-scroll turbocharger invention. In a further, particularly preferred embodiment, at least one exhaust gas inlet 3, 4, or the turbine housing 1 downstream of the exhaust gas inlets 3, 4 a bypass.
Fig. 3 zeigt eine Aufsicht auf Strömungskanäle im Turbinengehäuse 1 des erfindungsgemäßen Twin-scroll-Abgasturboladers. Die Abgase strömen in die Abgaseinlässe 3, 4 bis die Abgaseinlässe 3, 4 an jeweils einem Kanalübergang 6, 7 in Spiralkanäle 8, 9 übergehen und in den Spiralkanälen 8, 9 weiter um eine nicht dargestellte Turbine um diese anzutreiben. Weiter ist an jedem Abgaseinlass 3, 4 ein Bypasskanal 10, 11 erkennbar. Erfindungsgemäß sind die Kanalübergänge 6, 7 in diesem Ausführungsbeispiel um 30° im Turbinengehäuse 1 gegeneinander verdreht angeordnet. Der erfindungsgemäße Effekt stellt sich jedoch auch in einem Bereich zwischen 3° und 60° ein. Durch diese geometrische Ausgestaltung wird die Anströmung der Turbine mit Abgas nochmals wesentlich verbessert und der Wirkungsgrad des Abgasturboladers nochmals erheblich erhöht.3 shows a plan view of flow channels in the turbine housing 1 of the twin-scroll turbocharger according to the invention. The exhaust gases flow into the exhaust gas inlets 3, 4 until the exhaust gas inlets 3, 4 at each channel transition 6, 7 in spiral channels 8, 9 pass and continue to drive in the spiral channels 8, 9 to a turbine, not shown around this. Further, at each exhaust gas inlet 3, 4, a bypass channel 10, 11 can be seen. According to the channel transitions 6, 7 are arranged in this embodiment by 30 ° in the turbine housing 1 against each other rotated. However, the effect of the invention is also in a range between 3 ° and 60 °. Through this geometric design, the flow of the turbine with exhaust gas is again significantly improved and the efficiency of the exhaust gas turbocharger again significantly increased.
Zusammengefasst ergeben sich folgende Vorteile:In summary, the following advantages result:
Die erfindungsgemäße Ausgestaltung führt zu einer Kosteneinsparung durch eine kompakte Turbinengehäuseausgestaltung aufgrund einer Materialersparnis, insbesondere im Bereich des Abgaseinlassflansches 2. Weiter führt die erfindungsgemäße Ausgestaltung zu einer Wirkungsgradverbesserung der Turbine des Twin-scroll-Abgasturboladers durch eine sehr kompakt mögliche Ausführung des Bypasses, sowie durch eine ungehinderte Durchströmung des Abgases vom Abgaskrümmer 5 kommend in das Turbinengehäuse 1. Ein erheblicher Vorteil ergibt sich durch eine Kostenersparnis bei einer Span abhebenden Bearbeitung in Bezug auf die Bearbeitung einer konventionellen, schwierig zu bearbeitenden Doppel-D-Kontur. Die Bearbeitung kann in einfacher Weise beispielsweise durch Fräsen, Bohren, Spindeln usw. er- folgen. Auch eine spanlose Herstellung, z. B. mit Feingießverfahren ist möglich. Darüber hinaus sparen kreisrunde Konturen an der Schnittstelle zum Abgaskrümmer 5 Kosten bei der Span abhebenden Bearbeitung. Ein weiterer Vorteil der erfindungsgemäßen Ausgestaltung liegt darin, dass sich kreisrunde Konturen positiv bezüglich Festigkeitsspannungen zwischen dem Abgasturbolader und dem Abgaskrümmer 5 auswirken. Darüber hinaus ermöglichen kreisrunde Konturen eine optimale Gasführung in dem Abgaskrümmer 5 und dem Turbinengehäuse 1 , insbesondere bei 4-Zylinder-Brennkraft- maschinen. The embodiment of the invention leads to a cost savings through a compact turbine housing design due to a material savings, especially in the area of the Abgaseinlassflansches 2. Next, the inventive design leads to an improvement in the efficiency of the turbine of the twin-scroll turbocharger by a very compact possible execution of the bypass, and by a unobstructed flow of the exhaust gas from the exhaust manifold 5 coming into the turbine housing 1. A significant advantage is achieved by a cost savings in a chip-removing machining with respect to the machining of a conventional, difficult to machine double-D contour. Machining can be achieved in a simple manner, for example by milling, drilling, spindles, etc. consequences. Also a non-cutting production, for. B. with investment casting is possible. In addition, circular contours at the interface to the exhaust manifold 5 save costs during chip removing machining. Another advantage of the embodiment according to the invention is that circular contours have a positive effect with respect to strength stresses between the exhaust gas turbocharger and the exhaust manifold 5. In addition, circular contours allow optimum gas guidance in the exhaust manifold 5 and the turbine housing 1, in particular in 4-cylinder internal combustion engines.
BezuqszeichenhsteBezuqszeichenhste
1. Turbinengehäuse1. turbine housing
2. Abgaseinlassflansch2. exhaust inlet flange
3. Abgaseinlass3. exhaust inlet
4. Abgaseinlass4. exhaust inlet
5. Abgaskrümmer5. Exhaust manifold
6. Kanalübergang6th channel transition
7. Kanalübergang7. Canal transition
8. Spiralkanal8. Spiral channel
9. Spiralkanal9. Spiral channel
10. Bypasskanal10. Bypass channel
11. Bypasskanal11. Bypass channel
Z1 Zylinder 1Z1 cylinder 1
Z2 Zylinder 2Z2 cylinder 2
Z3 Zylinder 3Z3 cylinder 3
Z4 Zylinder 4 Z4 cylinder 4

Claims

Twin-scroll-Abgasturbolader für eine BrennkraftmaschinePatentansprüche Twin-scroll turbocharger for an internal combustion engine patent claims
1. Twin-scroll-Abgasturbolader für eine Brennkraftmaschine mit zumindest zwei Zylindern, wobei der Twin-scroll-Abgasturbolader ein Turbinengehäuse (1) mit einem Abgaseinlassflansch (2) mit zwei Abgaseinlässen (3, 4) mit einem Einströmquerschnitt aufweist, wobei jeder Abgasein- lass (3, 4) mit einem Zylinder (Z1 , Z2, Z3, Z4) abgasführend verbindbar ist und wobei jeder Abgaseinlass (3, 4) in dem Turbinengehäuse (1) an einem Kanalübergang (6, 7) in einen Spiralkanal (8, 9) übergeht und sich um eine Turbine des Twin-scroll-Abgasturboladers herum erstreckt, dadurch gekennzeichnet, dass die Einströmquerschnitte weitgehend kreisrund sind.A twin-scroll turbocharger for an internal combustion engine having at least two cylinders, wherein the twin-scroll exhaust gas turbocharger has a turbine housing (1) with an exhaust gas inlet flange (2) with two exhaust gas inlets (3, 4) with an inlet cross section, each exhaust gas inlet Let (3, 4) with a cylinder (Z1, Z2, Z3, Z4) is connectable exhaust gas and wherein each exhaust inlet (3, 4) in the turbine housing (1) at a channel transition (6, 7) into a spiral channel (8, 9) and extends around a turbine of the twin-scroll turbocharger, characterized in that the inflow cross sections are substantially circular.
2. Twin-scroll-Abgasturbolader nach Patentanspruch 1 , dadurch gekennzeichnet, dass die Abgaseinlässe (3, 4) in dem Abgaseinlassflansch (2) in Projektion auf die Spiralkanäle in Erstreckungsrich- tung der Spiralkanäle weitgehend nebeneinander angeordnet sind. 2. Twin-scroll turbocharger according to claim 1, characterized in that the exhaust gas inlets (3, 4) in the Abgaseinlassflansch (2) are arranged in projection on the spiral channels in the extension direction of the spiral channels largely adjacent to each other.
3. Twin-scroll-Abgasturbolader nach Patentanspruch 1 oder 2, wobei die Brennkraftmaschine mehr als zwei Zylinder aufweist, dadurch gekennzeichnet, dass zwei der Zylinder (Z1 , Z2, Z3, Z4) zu einer Zylindergruppe zusammengefasst sind, die abgasführend mit einem Abgaseinlass (3, 4) verbindbar ist.3. Twin-scroll turbocharger according to claim 1 or 2, wherein the internal combustion engine has more than two cylinders, characterized in that two of the cylinders (Z1, Z2, Z3, Z4) are combined to form a cylinder group, the exhaust gas leading to an exhaust gas inlet ( 3, 4) is connectable.
4. Twin-scroll-Abgasturbolader nach einem der Patentansprüche 1 bis 3, dadurch gekennzeichnet, dass zumindest einem Abgaseinlass (3, 4) ein Bypass zugeordnet ist.4. Twin-scroll turbocharger according to one of the claims 1 to 3, characterized in that at least one exhaust inlet (3, 4) is associated with a bypass.
5. Twin-scroll-Abgasturbolader nach einem der Patentansprüche 1 bis 4, dadurch gekennzeichnet, dass die Kanalübergänge (6, 7) zwischen 3° und 60° im Turbinengehäuse (1) gegeneinander verdreht angeordnet sind. 5. Twin-scroll turbocharger according to one of the claims 1 to 4, characterized in that the channel transitions (6, 7) between 3 ° and 60 ° in the turbine housing (1) are arranged rotated against each other.
PCT/EP2009/004389 2008-07-04 2009-06-18 Twin-scroll exhaust gas turbo charger for an internal combustion engine WO2010000391A1 (en)

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DE102008031724.1 2008-07-04
DE102008031724A DE102008031724A1 (en) 2008-07-04 2008-07-04 Twin-scroll turbocharger for an internal combustion engine

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PCT/EP2009/004389 WO2010000391A1 (en) 2008-07-04 2009-06-18 Twin-scroll exhaust gas turbo charger for an internal combustion engine

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KR20120064371A (en) * 2010-12-09 2012-06-19 이병준 Nonskid apparatus of a tire

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BE501076A (en) *
DE849038C (en) * 1942-05-23 1952-09-11 Alfred Dr-Ing Buechi Gas turbine
DE1476757A1 (en) * 1966-10-11 1969-10-30 Daimler Benz Ag Internal combustion piston engine with several combustion chambers and at least one exhaust gas turbine
DE10307028B3 (en) * 2003-02-20 2004-05-13 Benteler Automobiltechnik Gmbh Exhaust gas manifold for automobile IC engine has channels feeding exhaust gas received from engine cylinders to turbine wheel of exhaust gas turbine of turbocharger

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DE102006002130A1 (en) 2006-01-17 2007-08-02 Bayerische Motoren Werke Ag Twin-scroll turbocharger

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BE501076A (en) *
DE849038C (en) * 1942-05-23 1952-09-11 Alfred Dr-Ing Buechi Gas turbine
DE1476757A1 (en) * 1966-10-11 1969-10-30 Daimler Benz Ag Internal combustion piston engine with several combustion chambers and at least one exhaust gas turbine
DE10307028B3 (en) * 2003-02-20 2004-05-13 Benteler Automobiltechnik Gmbh Exhaust gas manifold for automobile IC engine has channels feeding exhaust gas received from engine cylinders to turbine wheel of exhaust gas turbine of turbocharger

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