DE102010009289A1 - Lubricating oil circuit for two exhaust gas turbochargers of internal combustion engine, has bypass channels for bearing housings, where former bypass channel leads lubricating oil that stands under pressure - Google Patents
Lubricating oil circuit for two exhaust gas turbochargers of internal combustion engine, has bypass channels for bearing housings, where former bypass channel leads lubricating oil that stands under pressure Download PDFInfo
- Publication number
- DE102010009289A1 DE102010009289A1 DE102010009289A DE102010009289A DE102010009289A1 DE 102010009289 A1 DE102010009289 A1 DE 102010009289A1 DE 102010009289 A DE102010009289 A DE 102010009289A DE 102010009289 A DE102010009289 A DE 102010009289A DE 102010009289 A1 DE102010009289 A1 DE 102010009289A1
- Authority
- DE
- Germany
- Prior art keywords
- lubricating oil
- bearing housing
- bypass channel
- bearing
- exhaust gas
- 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- Withdrawn
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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
- F02B37/013—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/18—Lubricating arrangements
-
- 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
- F02B37/004—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust drives arranged in series
-
- 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
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/14—Lubrication of pumps; Safety measures therefor
-
- 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
- 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
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
-
- 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
Die Erfindung betrifft einen Schmierölkreislauf für zwei Abgasturbolader einer Brennkraftmaschine, insbesondere einer Brennkraftmaschine mit zweistufiger Aufladung, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a lubricating oil circuit for two exhaust gas turbochargers of an internal combustion engine, in particular an internal combustion engine with two-stage supercharging, according to the preamble of
Eine zweistufige Aufladung von Brennkraftmaschinen ist unter anderem dort von Vorteil, wo der geforderte Ladedruck mit einem einzigen Abgasturbolader nicht erreicht werden kann. Häufig wird ein größerer, ständig laufender Abgasturbolader als Niederdruckstufe mit einem kleineren Abgasturbolader als Hochdruckstufe kombiniert, der nur bei Bedarf zugeschaltet wird. Durch eine zweistufige Aufladung kann darüber hinaus das Ansprechverhalten einer Brennkraftmaschine verbessert und im unteren und oberen Drehzahlbereich ein höheres Drehmoment erzielt bzw. ein größerer Leistungsbereich abgedeckt werden. Da im unteren Leistungsbereich das gesamte Abgas auf die Turbine eines einzigen Abgasturboladers einwirken kann, lässt sich dort außerdem der Wirkungsgrad der Aufladung verbessern.A two-stage supercharging of internal combustion engines is advantageous, inter alia, where the required supercharging pressure can not be achieved with a single exhaust-gas turbocharger. Often, a larger, continuously running exhaust gas turbocharger is combined as a low-pressure stage with a smaller exhaust gas turbocharger as a high-pressure stage, which is switched on only when needed. In addition, the response of an internal combustion engine can be improved by a two-stage charge, and a higher torque can be achieved in the lower and upper rpm range or a larger power range can be covered. Since the entire exhaust gas can act on the turbine of a single exhaust gas turbocharger in the lower power range, it can also improve the efficiency of the charge there.
Aus Platzgründen oder bei zwei Abgasturboladern unterschiedlicher Größe werden häufig getrennte Aggregate verwendet, bei denen jeweils eine das Turbinenrad und das Verdichterrad verbindende Welle in einem Lagergehäuse zwischen dem Turbinenrad und dem Verdichterrad in Gleitlagern gelagert ist. Die Schmierung der Gleitlager der Lagergehäuse der beiden Aggregate erfolgt in der Regel mittels der Schmierölpumpe der Brennkraftmaschine, die das zur Schmierung benötigte Schmier- oder Motoröl durch einen Schmierölkreislauf zu den Lagern des jeweiligen Lagergehäuses fördert.For reasons of space or two exhaust gas turbochargers of different sizes separate units are often used, in each of which a shaft connecting the turbine wheel and the compressor wheel is mounted in a bearing housing between the turbine wheel and the compressor in slide bearings. The lubrication of the sliding bearing of the bearing housing of the two units is usually carried out by means of the lubricating oil pump of the internal combustion engine, which promotes the lubrication required lubrication or engine oil through a lubricating oil circuit to the bearings of the respective bearing housing.
Dieser Schmierölkreislauf kann aufgrund der Einbausituation der beiden Aggregate eine aufwendige und komplexe Leitungsführung erforderlich machen, um einerseits das unter Druck stehende Schmieröl vom Zylinderkurbelgehäuse der Brennkraftmaschine mindestens teilweise durch getrennte Zulaufleitungen zu einem Zulaufanschluss von jedem der beiden Lagergehäuse zuzuführen und andererseits das aus den Lagern abtropfende drucklose Schmieröl von einem Rücklaufanschluss von jedem der beiden Lagergehäuse durch getrennte Rücklaufleitungen in eine Ölwanne oder eine Ölsumpf der Brennkraftmaschine zurückzuführen.Due to the installation situation of the two units, this lubricating oil circuit may require a complex and complex line guidance, on the one hand to feed the pressurized lubricating oil from the cylinder crankcase of the internal combustion engine at least partially through separate supply lines to an inlet port of each of the two bearing housings and, on the other hand, to depressurise the dripping from the bearings Lube oil from a return port of each of the two bearing housings by separate return lines in an oil pan or an oil sump of the internal combustion engine due.
Aus der
Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, einen Schmierölkreislauf der eingangs genannten Art dahingehend zu verbessern, dass eine einfachere und kürzere Leitungsführung möglich ist.Proceeding from this, the present invention seeks to improve a lubricating oil circuit of the type mentioned in that a simpler and shorter cable routing is possible.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Schmierölkreislauf für jedes der Lagergehäuse einen Bypasskanal umfasst, wobei der Bypasskanal des ersten Lagergehäuses unter Druck stehendes Schmieröl aus der Zulaufleitung an den Lager des ersten Lagergehäuses vorbei zu den Lagern des zweiten Lagergehäuses leitet und wobei der Bypasskanal des zweiten Lagergehäuses druckloses Schmieröl aus den Lagern des ersten Lagergehäuses an den Lagern des zweiten Lagergehäuses vorbei zur Rücklaufleitung leitet.This object is achieved in that the lubricating oil circuit comprises a bypass channel for each of the bearing housing, wherein the bypass passage of the first bearing housing under pressure lubricating oil from the supply line to the bearing of the first bearing housing passes over to the bearings of the second bearing housing and wherein the bypass channel of the second bearing housing pressure-free lubricating oil from the bearings of the first bearing housing to the bearings of the second bearing housing passes over to the return line.
Dort, wo es sich bei den beiden Abgasturboladern um zwei getrennte Aggregate handelt, die im Abstand voneinander angeordnet sind, sieht eine bevorzugte Ausgestaltung der Erfindung vor, zwischen den beiden Lagergehäuse zwei Verbindungsleitungen vorzusehen, von denen die eine einen Schmierölauslass des Bypasskanals des ersten Lagergehäuses mit einem Schmieröleinlass des zweiten Lagergehäuses verbindet, und von denen die andere einen Schmierölauslass für das drucklose Schmieröl am ersten Lagergehäuse mit dem Bypasskanal des zweiten Lagergehäuses verbindet.Where there are two separate units in the two exhaust gas turbochargers, which are arranged at a distance from each other, a preferred embodiment of the invention to provide two connecting lines between the two bearing housings, of which one with a lubricating oil outlet of the bypass channel of the first bearing housing a lubricating oil inlet of the second bearing housing connects, and of which the other connects a lubricating oil outlet for the non-pressurized lubricating oil on the first bearing housing with the bypass channel of the second bearing housing.
Um für eine verbesserte Notlaufschmierung zu sorgen und zu diesem Zweck den Ablauf des drucklosen Schmieröls aus den Lagergehäusen zu erleichtern, werden die Lagergehäuse beiden Abgasturbolader bevorzugt mindestens teilweise übereinander angeordnet, wobei vorteilhaft das erste Lagergehäuse mit dem Bypasskanal für das unter Druck stehende Schmieröl oberhalb von dem zweiten Lagergehäuse mit dem Bypasskanal für das drucklose Schmieröl angeordnet ist, so dass das drucklose Schmieröl aus dem ersten Lagergehäuse auch ohne Förderung durch die Schmiermittelpumpe nach unten in den Bypasskanal des zweiten Lagergehäuses und durch den Bypasskanal des zweiten Lagergehäuses in die Rücklaufleitung fließen kann.To provide for improved run-flat lubrication and to facilitate this purpose the flow of pressureless lubricating oil from the bearing housings, the bearing housing two exhaust gas turbochargers are preferably at least partially arranged one above the other, wherein advantageously the first bearing housing with the bypass channel for the pressurized lubricating oil above the second bearing housing is arranged with the bypass passage for the non-pressurized lubricating oil, so that the non-pressurized lubricating oil from the first bearing housing can flow without promotion by the lubricant pump down into the bypass passage of the second bearing housing and through the bypass passage of the second bearing housing in the return line.
Um die Leitungsführung weiter zu vereinfachen und darüber hinaus auch die Anzahl der benötigten Anschlüsse der Lagergehäuse zu verringern, sind vorteilhaft die Bypasskanäle in das jeweilige Lagergehäuse integriert. Dabei zweigt der Bypasskanal des ersten Lagergehäuses zweckmäßig innerhalb des ersten Lagergehäuses von einem Schmierölkanal ab, der die Lager des ersten Lagergehäuses mit einem an die Zulaufleitung angeschlossenen Schmieröleinlass am ersten Lagergehäuse verbindet, während der Bypasskanal des zweiten Lagergehäuses zweckmäßig innerhalb des zweiten Lagergehäuses in einen Auslasskanal mündet, der die Lager des zweiten Lagergehäuses mit einem an die Rücklaufleitung angeschlossenen Schmierölauslass am zweiten Lagergehäuse verbindet.To further simplify the wiring and beyond the number of To reduce required connections of the bearing housing, the bypass channels are advantageously integrated into the respective bearing housing. In this case, the bypass channel of the first bearing housing branches off expediently within the first bearing housing from a lubricating oil channel which connects the bearings of the first bearing housing with a lubricating oil inlet connected to the inlet line on the first bearing housing, while the bypass channel of the second bearing housing expediently opens into an outlet channel within the second bearing housing connecting the bearings of the second bearing housing with a lubricating oil outlet connected to the return line on the second bearing housing.
Im Folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:In the following the invention will be explained in more detail with reference to an embodiment shown in the drawing. Show it:
Die in der Zeichnung dargestellte Reihen-Brennkraftmaschine
Bei dem ersten, in Strömungsrichtung der Abgase (Pfeil A in
Wie in
Wie in
Die Gleitlager
Wie in
Der Schmierölkreislauf
Das Lagergehäuse
Durch die hochgradige Integration der Kanäle
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- BrennkraftmaschineInternal combustion engine
- 22
- Ansaugtraktintake system
- 33
- Abgastraktexhaust tract
- 44
- erster Abgasturboladerfirst exhaust gas turbocharger
- 55
- zweiter Abgasturboladersecond exhaust gas turbocharger
- 66
- Verdichter erster AbgasturboladerCompressor first turbocharger
- 77
- Verdichter zweiter AbgasturboladerCompressor second turbocharger
- 88th
- Turbine erster AbgasturboladerTurbine first turbocharger
- 99
- Turbine zweiter AbgasturboladerTurbine second turbocharger
- 1010
- LadeluftkühlerIntercooler
- 1111
- Abgaskrümmerexhaust manifold
- 1212
- Bypassleitungbypass line
- 1313
- VentilValve
- 1414
- Turbinenradturbine
- 1515
- Antriebswelledrive shaft
- 1616
- Verdichterradcompressor
- 1717
- Gleitlagerbearings
- 1818
- Gleitlagerbearings
- 1919
- Lagergehäuse erster AbgasturboladerBearing housing first exhaust gas turbocharger
- 2020
- Lagergehäuse zweiter AbgasturboladerBearing housing second exhaust gas turbocharger
- 2121
- Ölwanneoil pan
- 2222
- Zylinderkurbelgehäusecylinder crankcase
- 2323
- SchmierölkreislaufLubricating oil circuit
- 2424
- Zulaufleitungsupply line
- 2525
- SchmieröleinlassOil inlet
- 2626
- SchmierölkanalLubricating oil passage
- 2727
- erster Schmierölauslassfirst lubricating oil outlet
- 2828
- Auslasskanalexhaust port
- 2929
- zweiter Schmierölauslasssecond lubricating oil outlet
- 3030
- Bypasskanalbypass channel
- 3131
- Verbindungsleitungconnecting line
- 3232
- Verbindungsleitungconnecting line
- 3333
- erster Schmieröleinlassfirst lubricating oil inlet
- 3434
- zweiter Schmieröleinlasssecond lubricating oil inlet
- 3535
- SchmierölkanalLubricating oil passage
- 3636
- Schmierölauslasslubricating oil outlet
- 3737
- Auslasskanalexhaust port
- 3838
- Bypasskanalbypass channel
- 3939
- RücklaufleitungReturn line
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 4026099 C2 [0005] DE 4026099 C2 [0005]
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010009289A DE102010009289A1 (en) | 2010-02-25 | 2010-02-25 | Lubricating oil circuit for two exhaust gas turbochargers of internal combustion engine, has bypass channels for bearing housings, where former bypass channel leads lubricating oil that stands under pressure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010009289A DE102010009289A1 (en) | 2010-02-25 | 2010-02-25 | Lubricating oil circuit for two exhaust gas turbochargers of internal combustion engine, has bypass channels for bearing housings, where former bypass channel leads lubricating oil that stands under pressure |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102010009289A1 true DE102010009289A1 (en) | 2011-08-25 |
Family
ID=44356756
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102010009289A Withdrawn DE102010009289A1 (en) | 2010-02-25 | 2010-02-25 | Lubricating oil circuit for two exhaust gas turbochargers of internal combustion engine, has bypass channels for bearing housings, where former bypass channel leads lubricating oil that stands under pressure |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102010009289A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012107072A1 (en) | 2011-02-11 | 2012-08-16 | Audi Ag | Insertion tube connection between separate bearing housings of two exhaust gas turbochargers |
EP3141723A1 (en) * | 2015-09-11 | 2017-03-15 | Kabushiki Kaisha Toyota Jidoshokki | Charging apparatus for engine |
FR3073567A1 (en) * | 2017-11-15 | 2019-05-17 | Renault S.A.S. | SYSTEM OF TWO TURBOCOMPRESSORS CONNECTED IN SERIES |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4026099C2 (en) | 1990-08-17 | 1994-02-03 | Mtu Friedrichshafen Gmbh | Oil supply system for the bearings of exhaust gas turbochargers that can be switched on and off |
-
2010
- 2010-02-25 DE DE102010009289A patent/DE102010009289A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4026099C2 (en) | 1990-08-17 | 1994-02-03 | Mtu Friedrichshafen Gmbh | Oil supply system for the bearings of exhaust gas turbochargers that can be switched on and off |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012107072A1 (en) | 2011-02-11 | 2012-08-16 | Audi Ag | Insertion tube connection between separate bearing housings of two exhaust gas turbochargers |
DE102011010995A1 (en) | 2011-02-11 | 2012-08-16 | Audi Ag | Plug-in pipe connection between separate bearing housings of two exhaust gas turbochargers |
EP3141723A1 (en) * | 2015-09-11 | 2017-03-15 | Kabushiki Kaisha Toyota Jidoshokki | Charging apparatus for engine |
US10107188B2 (en) | 2015-09-11 | 2018-10-23 | Kabushiki Kaisha Toyota Jidoshokki | Forced induction apparatus for engine |
FR3073567A1 (en) * | 2017-11-15 | 2019-05-17 | Renault S.A.S. | SYSTEM OF TWO TURBOCOMPRESSORS CONNECTED IN SERIES |
EP3486451A1 (en) * | 2017-11-15 | 2019-05-22 | RENAULT s.a.s. | System of two turbochargers connected in series |
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Legal Events
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R163 | Identified publications notified |
Effective date: 20120510 |
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R012 | Request for examination validly filed |
Effective date: 20120712 |
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R120 | Application withdrawn or ip right abandoned |