DE10331619A1 - Exhaust turbocharger for a supercharged internal combustion engine, comprises turbine and the compressor wheel which together form a combined turbine-compressor wheel - Google Patents
Exhaust turbocharger for a supercharged internal combustion engine, comprises turbine and the compressor wheel which together form a combined turbine-compressor wheel Download PDFInfo
- Publication number
- DE10331619A1 DE10331619A1 DE10331619A DE10331619A DE10331619A1 DE 10331619 A1 DE10331619 A1 DE 10331619A1 DE 10331619 A DE10331619 A DE 10331619A DE 10331619 A DE10331619 A DE 10331619A DE 10331619 A1 DE10331619 A1 DE 10331619A1
- Authority
- DE
- Germany
- Prior art keywords
- exhaust gas
- turbine
- compressor wheel
- compressor
- wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- 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
- F02B37/22—Control of the pumps by varying cross-section of exhaust passages or air passages, e.g. by throttling turbine inlets or outlets or by varying effective number of guide conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/09—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/51—EGR valves combined with other devices, e.g. with intake valves or compressors
-
- 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
Abstract
Description
Stand der TechnikState of technology
Die Erfindung geht aus von einem Abgasturbolader für eine aufgeladene Brennkraftmaschine mit Abgasrückführung, welcher auf einer Welle angeordnet eine Turbine und einen ersten Verdichter umfasst, wobei zwischen einer Zuströmseite der Turbine und einer Druckseite des ersten Verdichters eine Gasleitungsverbindung sowie eine einen zweiten Verdichter umfassende Gasfördereinrichtung zur Förderung von Gas entlang der Gasleitungsverbindung angeordnet ist, gemäß der Gattung von Anspruch 1.The The invention is based on an exhaust gas turbocharger for a supercharged internal combustion engine with exhaust gas recirculation, which arranged on a shaft a turbine and a first compressor comprising, between an upstream side of the turbine and a Pressure side of the first compressor a gas line connection as well a gas conveyor comprising a second compressor for conveying of gas is arranged along the gas line connection, according to the genus of claim 1.
Ein
solcher Abgasturbolader ist beispielsweise aus der
Bei dem bekannten Abgasturbolader ist das Verdichterrad des zweiten Verdichters auf der Rückseite des Turbinenrades angeordnet und die Verdichterschaufeln axial gegensinnig zu den Turbinenschaufeln ausgerichtet. Folglich sind zwei getrennte Strömungskanäle vorhanden, um sowohl das Turbinenrad als auch das Verdichterrad mit einer Abgasströmung zu versorgen.at the known exhaust gas turbocharger is the compressor wheel of the second Compressor on the back arranged the turbine wheel and the compressor blades axially in opposite directions Aligned to the turbine blades. Consequently, there are two separate flow channels, to both the turbine and the compressor with an exhaust gas flow to supply.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Abgasturbolader der eingangs erwähnten Art derart weiter zu entwickeln, dass er konstruktiv einfacher aufgebaut und kostengünstiger herstellbar ist.Of the present invention is based on the object, an exhaust gas turbocharger the aforementioned To develop such a way that he constructed constructively simpler and cheaper to produce is.
Erfindungsgemäß wird diese Aufgabe durch die kennzeichnenden Merkmale von Anspruch 1 gelöst.According to the invention this Problem solved by the characterizing features of claim 1.
Vorteile der ErfindungAdvantages of invention
Indem das Verdichterrad des zweiten Verdichters an der radial äußeren Umfangsfläche des Turbinenrades der Turbine koaxial angeordnet ist und das Turbinenrad und das Verdichterrad zusammen ein kombiniertes Turbinen-Verdichterrad bilden, ergibt sich eine sehr einfache Montage des Abgasturboladers, weil das Verdichterrad lediglich radial auf das Turbinenrad aufgesetzt bzw. als einstückiges Bauteil mit dem Turbinenrad ausgeführt wird. Außerdem wird die axiale Länge des Abgasturboladers verkürzt.By doing the compressor wheel of the second compressor on the radially outer peripheral surface of the turbine wheel the turbine is arranged coaxially and the turbine wheel and the compressor wheel together form a combined turbine compressor wheel results a very simple assembly of the exhaust gas turbocharger, because the compressor wheel only radially mounted on the turbine or as a one-piece component executed with the turbine wheel becomes. Furthermore becomes the axial length shortened the exhaust gas turbocharger.
Gegenüber dem eingangs genannten Stand der Technik, bei welchem das Verdichterrad des zweiten Verdichters auf der Rückseite des Turbinenrades angeordnet und axial gegensinnig zu diesem ausgerichtet ist, können die Verdichterschaufeln und die Turbinenschaufeln vorzugsweise auf derselben Seite des kombinierten Turbinen-Verdichterrades angeordnet sein und eine Rückseite des Turbinenrades mit der Rückseite des Verdichterrades im wesentlichen fluchten. Dann kann das kombinierte Turbinen-Verdichterrad durch einen einzigen Abgasströmungskanal mit Abgas versorgt werden. Folglich sind keine zwei getrennten Abgasströmungskanäle wie beim Stand der Technik erforderlich. Durch die genannten Maßnahmen ergibt sich ein einfacherer und kostengünstigerer Aufbau des Abgasturboladers.Compared to the mentioned in the prior art, in which the compressor wheel of the second compressor arranged on the back of the turbine wheel and axially aligned in opposite directions to this, the Compressor blades and the turbine blades preferably on the same side be arranged of the combined turbine compressor wheel and a back of the turbine wheel with the back the compressor wheel are substantially aligned. Then the combined Turbine compressor wheel through a single exhaust gas flow channel be supplied with exhaust gas. Consequently, there are no two separate exhaust gas flow channels as in the State of the art required. By the measures mentioned results in a simpler and cheaper construction of the exhaust gas turbocharger.
Gemäß einer besonders bevorzugten Ausführungsform überragen die Turbinenradschaufeln die Verdichterradschaufeln axial, wobei dem Abgasströmungskanal und den Verdichterradschaufeln ein Ring axial zwischengeord net ist, dessen radial innerer Rand durch einen Spalt von einem radial äußeren Rand der Turbinenradschaufeln beabstandet ist. Dabei ist der Ring derart ausgebildet, dass die Größe des Spalts von im wesentlichen gleich 0 bis zu einer bestimmten lichten Weite variierbar ist. Durch Veränderung der Größe des Spalts kann die Menge des die Verdichterradschaufeln passierenden Abgases und folglich der Druckaufbau in der Gasleitungsverbindung gesteuert werden, wobei der Ring ein konstruktiv äußerst einfaches und kostengünstiges Mittel darstellt. In diesem Fall braucht in der Gasleitungsverbindung kein zusätzliches Steuerventil vorgesehen werden, da die Steuerung des rückgeführten Abgasstromes in Strömungsrichtung gesehen bereits vor dem als Gasfördereinrichtung wirkenden Verdichterrad des kombinierten Turbinen-Verdichterrades durch den verstellbaren Ring realisiert ist.According to one exceed particularly preferred embodiment the turbine blades axially impeller the compressor blades, wherein the exhaust gas flow channel and the compressor impeller blades are axially interposed between a ring, its radially inner edge through a gap from a radially outer edge the turbine blades is spaced apart. The ring is like this formed that the size of the gap from substantially 0 to a certain clear width is variable. By change the size of the gap may be the amount of exhaust gas passing the compressor impeller blades and hence the pressure build-up in the gas line connection is controlled be, the ring is a structurally extremely simple and inexpensive Means represents. In this case needs in the gas line connection no additional Control valve can be provided, since the control of the recirculated exhaust gas flow in the flow direction already seen before as a gas conveyor acting compressor wheel of the combined turbine compressor wheel the adjustable ring is realized.
Vorzugsweise wird der Ring durch zwei an je einem Ende gelenkig verbundene Ringhälften gebildet, deren andere Enden in Umfangsrichtung gesehen abstandsveränderbar sind.Preferably If the ring is formed by two ring halves articulated at one end, whose other ends seen in the circumferential direction distance variable are.
Zeichnungendrawings
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und in der nachfolgenden Beschreibung näher erläutert. In den Zeichnungen zeigen:embodiments The invention is illustrated in the drawings and in the following Description closer explained. In the drawings show:
Beschreibung der Ausführungsbeispieledescription the embodiments
In
Von
einem Gehäuse
Das
Gehäuse
Die
Verdichterradschaufeln
Dem
Abgasströmungskanal
Ein
radialer äußerer Rand
des Rings
In
der Grundstellung, in welcher die beiden anderen Enden
Durch
Vergrößern des
Umfangsabstandes der anderen Enden
Durch
die genannten Maßnahmen
kann das kombinierte Turbinen-Verdichterrad
Bei
den weiteren Ausführungsbeispielen
der Erfindung nach den
Gemäß der Ausführungsform
von
Wie
bei der Ausführungsform
von
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10331619A DE10331619A1 (en) | 2003-07-12 | 2003-07-12 | Exhaust turbocharger for a supercharged internal combustion engine, comprises turbine and the compressor wheel which together form a combined turbine-compressor wheel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10331619A DE10331619A1 (en) | 2003-07-12 | 2003-07-12 | Exhaust turbocharger for a supercharged internal combustion engine, comprises turbine and the compressor wheel which together form a combined turbine-compressor wheel |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10331619A1 true DE10331619A1 (en) | 2005-02-03 |
Family
ID=33560077
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10331619A Withdrawn DE10331619A1 (en) | 2003-07-12 | 2003-07-12 | Exhaust turbocharger for a supercharged internal combustion engine, comprises turbine and the compressor wheel which together form a combined turbine-compressor wheel |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10331619A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008005382A1 (en) * | 2006-06-30 | 2008-01-10 | Caterpillar Inc. | Exhaust gas recirculation system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4209469C1 (en) * | 1992-03-24 | 1993-04-22 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | Turbo-charged IC engine - has annular channel in spiral housing of exhaust turbine and forming compressor with blade section of turbine wheel |
-
2003
- 2003-07-12 DE DE10331619A patent/DE10331619A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4209469C1 (en) * | 1992-03-24 | 1993-04-22 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | Turbo-charged IC engine - has annular channel in spiral housing of exhaust turbine and forming compressor with blade section of turbine wheel |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008005382A1 (en) * | 2006-06-30 | 2008-01-10 | Caterpillar Inc. | Exhaust gas recirculation system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE |
|
8127 | New person/name/address of the applicant |
Owner name: DAIMLER AG, 70327 STUTTGART, DE |
|
8120 | Willingness to grant licences paragraph 23 | ||
8139 | Disposal/non-payment of the annual fee |