DE102008057729A1 - Exhaust gas turbo-charger for internal combustion engine in motor vehicle, has rotor supported in stator via pneumatic radial bearing and axial bearing, where radial bearing is pneumatically loaded by rotor, during operation of charger - Google Patents
Exhaust gas turbo-charger for internal combustion engine in motor vehicle, has rotor supported in stator via pneumatic radial bearing and axial bearing, where radial bearing is pneumatically loaded by rotor, during operation of charger Download PDFInfo
- Publication number
- DE102008057729A1 DE102008057729A1 DE200810057729 DE102008057729A DE102008057729A1 DE 102008057729 A1 DE102008057729 A1 DE 102008057729A1 DE 200810057729 DE200810057729 DE 200810057729 DE 102008057729 A DE102008057729 A DE 102008057729A DE 102008057729 A1 DE102008057729 A1 DE 102008057729A1
- Authority
- DE
- Germany
- Prior art keywords
- rotor
- exhaust gas
- gas turbocharger
- bearing
- pneumatic
- 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.)
- Ceased
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
- 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
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
-
- 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
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/06—Arrangements of bearings; Lubricating
Landscapes
- 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
Description
Die vorliegende Erfindung betrifft einen Abgasturbolader für eine Brennkraftmaschine, insbesondere eines Kraftfahrzeugs.The The present invention relates to an exhaust gas turbocharger for an internal combustion engine, in particular a motor vehicle.
Üblicherweise umfasst ein Abgasturbolader einen Rotor sowie einen Stator, in dem der Rotor um eine Rotationsachse drehbar gelagert ist. Der Rotor umfasst üblicherweise eine Welle, die ein Turbinenrad und ein Verdichterrad trägt. Der Rotor kann über Gleitlager, insbesondere über hydrodynamische Gleitlager, radial im Stator gelagert sein. Ebenso ist eine axiale Abstützung des Rotors am Stator über Gleitlager, insbesondere über hydrodynamische Gleitlager, möglich. Hydrodynamische Gleitlager zeichnen sich durch extrem niedrige Reibungsbeiwerte aus, wodurch der Rotor insbesondere schnell beschleunigen kann und auch bei hohen Drehzahlen einen großen Wirkungsgrad ermöglicht. Problematisch ist bei hydrodynamischen Gleitlagern die Versorgung mit Schmieröl, insbesondere im Hinblick auf einen vergleichsweise großen Betriebstemperaturbereich, der von –30° bis +150°C reichen kann. Damit gehen gravierende Viskositätsänderungen im Schmieröl sowie Spaltmaßänderungen in den Gleitlagern einher.Usually For example, an exhaust gas turbocharger includes a rotor and a stator in which the rotor is rotatably mounted about a rotation axis. The rotor usually includes a shaft carrying a turbine wheel and a compressor wheel. Of the Rotor can via plain bearings, especially about hydrodynamic plain bearings, be mounted radially in the stator. As well is an axial support of the rotor on the stator via plain bearings, especially about Hydrodynamic bearings, possible. Hydrodynamic plain bearings are characterized by extremely low friction coefficients out, whereby the rotor can accelerate especially fast and allows high efficiency even at high speeds. The problem with hydrodynamic plain bearings is the supply with lubricating oil, especially with regard to a comparatively large operating temperature range, ranging from -30 ° to + 150 ° C can. This will lead to serious viscosity changes in the lubricating oil as well Spaltmaßänderungen in the plain bearings.
Die vorliegende Erfindung beschäftigt sich mit dem Problem, für einen Abgasturbolader der eingangs genannten Art eine verbesserte Ausführungsform anzugeben, die sich insbesondere dadurch auszeichnet, dass der Aufwand zur Realisierung einer ausreichenden Lagerung des Rotors im Stator reduziert ist.The present invention employs dealing with the problem, for an exhaust gas turbocharger of the type mentioned an improved embodiment which is characterized in particular by the fact that the effort to realize a sufficient storage of the rotor in the stator is reduced.
Dieses Problem wird erfindungsgemäß durch den Gegenstand des unabhängigen Anspruchs gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Ansprüche.This Problem is inventively the subject of the independent Claim solved. Advantageous embodiments are the subject of the dependent Claims.
Die Erfindung beruht auf dem allgemeinen Gedanken, den Rotor im Stator über pneumatische Gleitlager zu lagern, die im Betrieb des Abgasturboladers durch den Rotor hindurch pneumatisch aufgeladen werden. Pneumatische Gleitlager arbeiten mit einem Gaspolster zur Lagerung und zeichnen sich durch extrem niedrige Reibungsbeiwerte aus. Problematisch ist dabei die Aufladung der pneumatischen Gleitlager, also die Versorgung mit Gas zur Bereitstellung des die Lagerung bewirkenden Gaspolsters. Hierzu schlägt die Erfindung vor, die Aufladung wenigstens eines pneumatischen Radiallagers durch den Rotor hindurch zu realisieren. Das bedeutet, dass die Pneumatikversorgung des jeweiligen Pneumatiklagers zumindest in einem an das jeweilige Pneumatiklager anschließenden Bereich innerhalb des Rotors verläuft. Das jeweilige Radiallager wird dadurch radial von innen mit dem Gas versorgt. Auf eine aufwändige, im Stator verlaufende Leitungsführung zur Gasversorgung pneumatischer Lager kann dadurch weitgehend verzichtet werden. Der Aufbau des Abgasturboladers, insbesondere eines den Stator bildenden Gehäuses, wird dadurch vergleichsweise einfach, auch wenn mit pneumatischen Gleitlagern gearbeitet wird.The Invention is based on the general idea, the rotor in the stator via pneumatic bearings store during operation of the exhaust gas turbocharger through the rotor be charged pneumatically. Pneumatic plain bearings work with a gas cushion for storage and are characterized by extreme low friction coefficients. The problem is the charging the pneumatic plain bearing, so the supply of gas for provision of the storage causing gas cushion. For this purpose, the invention proposes before, the charging of at least one pneumatic radial bearing by the Rotor to realize. That means the pneumatic supply of the respective pneumatic bearing at least in one to the respective pneumatic bearing subsequent Area within the rotor runs. The respective radial bearing is thereby supplied radially from the inside with the gas. On a lavish, im Stator extending cable routing For gas supply pneumatic bearings can be largely dispensed with become. The structure of the exhaust gas turbocharger, in particular a the Stator housing, This makes it comparatively easy, even if with pneumatic Sliding bearings is worked.
Besonders vorteilhaft ist eine Ausführungsform, bei welcher der Rotor ein Kanalsystem enthält, das ausgangsseitig an das wenigstens eine pneumatische Radiallager und eingangsseitig an einen Verdichterraum angeschlossen ist. In diesem Verdichterraum rotiert im Betrieb des Abgasturboladers ein am Rotor drehfest angeordnetes Verdichterrad. Ferner ist dieser Verdichterraum zweckmäßig im Stator ausgebildet. Bei dieser Bauweise wird zur Aufladung des wenigstens einen pneumatischen Radiallagers ein ausschließlich im Inneren des Rotors verlaufendes, internes Kanalsystem verwendet, so dass statorseitig kein Aufwand betrieben werden muss, um das jeweilige pneumatische Radiallager mit Gas zu versorgen.Especially an embodiment is advantageous in which the rotor contains a channel system, the output on the at least one pneumatic radial bearing and input side to a Compressor space is connected. Rotates in this compressor room during operation of the exhaust gas turbocharger a rotatably mounted on the rotor Compressor wheel. Furthermore, this compressor space is useful in the stator educated. In this construction is for charging the at least a pneumatic radial bearing only inside the rotor running, running internal channel system, so that no stator Effort must be operated to the respective pneumatic radial bearing to supply gas.
Bei einer anderen vorteilhaften Ausführungsform kann der Rotor außerdem so ausgestaltet werden, dass im Betrieb des Turboladers außerdem zumindest ein pneumatisches Axiallager durch den Rotor hindurch aufgeladen werden kann. Insbesondere sind somit sämtliche Radiallager und Axiallager, mit denen der Rotor im Stator gelagert ist, pneumatisch betrieben und durch den Rotor hindurch aufgeladen. Der Aufwand zur Realisierung einer pneumatischen Lagerung wird dadurch erheblich reduziert.at another advantageous embodiment can the rotor as well be designed so that during operation of the turbocharger also at least a pneumatic thrust bearing is charged through the rotor can be. In particular, therefore, all radial bearings and thrust bearings, with which the rotor is mounted in the stator, pneumatically operated and charged through the rotor. The effort to realize a pneumatic bearing is thereby considerably reduced.
Alternativ ist es grundsätzlich auch möglich, ein pneumatisches Axiallager im Betrieb durch den Stator hindurch pneumatisch aufzuladen. Das bedeutet, dass eine entsprechende Gasversorgung im Stator verlegt ist, die nicht wie beim Rotor von innen, sondern von außen an das jeweilige Axiallager raugeführt ist. Hierzu kann insbesondere vorgesehen sein, im Stator ein Kanalsystem auszubilden, das eingangsseitig an einen im Stator ausgebildeten Hochdruckraum angeschlossen ist. Hierdurch ist es insbesondere möglich, für das jeweilige Axiallager eine Hochdruckaufladung zur realisieren, während für das jeweilige Radiallager über den stromauf des Hochdruckraums angeordneten Verdichterraum eine Niederdruckaufladung realisiert wird.alternative it is basically also possible, one Pneumatic thrust bearing in operation through the stator pneumatic charge. That means a corresponding gas supply laid in the stator, which is not like the rotor from the inside, but from the outside is roughened to the respective thrust bearing. This can in particular be provided to form a channel system in the stator, the input side is connected to a formed in the stator high-pressure chamber. This makes it possible in particular for the respective thrust bearing to realize a high pressure charging while for the respective Radial bearing over the compressor space arranged upstream of the high-pressure space Low pressure charging is realized.
Die Aufladung der pneumatischen Radiallager durch den Rotor führt zu einer von innen nach außen orientierten Gasströmung im jeweiligen Radiallager. Dies kann insbesondere dazu genutzt werden, im jeweiligen Radiallager zusätzlich eine pneumatische Dichtung zu realisieren, mit deren Hilfe beispielsweise ein Eintritt von heißen Abgasen in das jeweilige Radiallager verhindert werden kann.The Charging the pneumatic radial bearings through the rotor leads to a from the inside to the outside oriented gas flow in the respective radial bearing. This can be used in particular in the respective radial bearings in addition to realize a pneumatic seal, by means of which, for example an entry of hot Exhaust gases can be prevented in the respective radial bearing.
Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Further important features and advantages of the invention emerge from the subclaims, from the drawings and from the associated description of the figures with reference to the drawings.
Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It it is understood that the above and the following yet to be explained features not only in the specified combination, but also in other combinations or alone, without to leave the scope of the present invention.
Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder ähnliche oder funktional gleiche Bauteile beziehen.preferred embodiments The invention are illustrated in the drawings and in the following description explains where like reference numerals refer to the same or similar or functionally identical components relate.
Es zeigen, jeweils schematischIt show, each schematically
Entsprechend
den
Der
Rotor
Alternativ
oder zusätzlich
zum eingangsseitigen Radialkanal
Der
hier vorgestellte Rotor
Entsprechend
Im
Unterschied zu
Der
hier vorgestellte Rotor
Durch
eine gezielt gewählte
Positionierung und/oder Dimensionierung und/oder Ausrichtung der Radialkanäle
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810057729 DE102008057729A1 (en) | 2008-11-17 | 2008-11-17 | Exhaust gas turbo-charger for internal combustion engine in motor vehicle, has rotor supported in stator via pneumatic radial bearing and axial bearing, where radial bearing is pneumatically loaded by rotor, during operation of charger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810057729 DE102008057729A1 (en) | 2008-11-17 | 2008-11-17 | Exhaust gas turbo-charger for internal combustion engine in motor vehicle, has rotor supported in stator via pneumatic radial bearing and axial bearing, where radial bearing is pneumatically loaded by rotor, during operation of charger |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008057729A1 true DE102008057729A1 (en) | 2010-05-27 |
Family
ID=42114432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810057729 Ceased DE102008057729A1 (en) | 2008-11-17 | 2008-11-17 | Exhaust gas turbo-charger for internal combustion engine in motor vehicle, has rotor supported in stator via pneumatic radial bearing and axial bearing, where radial bearing is pneumatically loaded by rotor, during operation of charger |
Country Status (1)
Country | Link |
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DE (1) | DE102008057729A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2500192A (en) * | 2012-03-12 | 2013-09-18 | Jaguar Cars | Compact Multi-Stage Turbo Pump |
US20130241326A1 (en) * | 2012-03-19 | 2013-09-19 | Hamilton Sundstrand Corporation | Liquid cooled dynamoelectric machine |
US20150086332A1 (en) * | 2013-09-25 | 2015-03-26 | Hyundai Wia Corporation | Turbocharger |
DE102014206409A1 (en) | 2014-04-03 | 2015-10-08 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Rotor of a charging device |
CN105317464A (en) * | 2014-08-05 | 2016-02-10 | 博世马勒涡轮系统有限两合公司 | Method for producing a rotor of a charging apparatus |
DE102018112443A1 (en) * | 2018-05-24 | 2019-11-28 | Man Energy Solutions Se | Turbocharger and propulsion system with fuel cell and turbocharger |
CN113508239A (en) * | 2018-12-03 | 2021-10-15 | Bmts科技有限及两合公司 | Exhaust-gas turbocharger or hydrodynamic plain bearing having a hydrodynamic plain bearing |
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DE1575700A1 (en) * | 1965-10-23 | 1970-12-10 | Union Carbide Corp | Gas-lubricated rotating assembly |
GB1315307A (en) * | 1969-08-21 | 1973-05-02 | Cav Ltd | Turbo superchargers for internal combustion engines |
DE2948398A1 (en) * | 1979-12-01 | 1981-06-04 | Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt | EXHAUST TURBOCHARGER |
JPS60173316A (en) * | 1984-02-17 | 1985-09-06 | Nissan Motor Co Ltd | Gas bearing service for turbocharger |
JPS61126327A (en) * | 1984-11-22 | 1986-06-13 | Nissan Motor Co Ltd | Pneumatic bearing device in turbocharger |
US5567129A (en) * | 1995-05-25 | 1996-10-22 | Bonardi; G. Fonda | Thrust control system for gas-bearing turbocompressors |
-
2008
- 2008-11-17 DE DE200810057729 patent/DE102008057729A1/en not_active Ceased
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1575700A1 (en) * | 1965-10-23 | 1970-12-10 | Union Carbide Corp | Gas-lubricated rotating assembly |
GB1315307A (en) * | 1969-08-21 | 1973-05-02 | Cav Ltd | Turbo superchargers for internal combustion engines |
DE2948398A1 (en) * | 1979-12-01 | 1981-06-04 | Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt | EXHAUST TURBOCHARGER |
JPS60173316A (en) * | 1984-02-17 | 1985-09-06 | Nissan Motor Co Ltd | Gas bearing service for turbocharger |
JPS61126327A (en) * | 1984-11-22 | 1986-06-13 | Nissan Motor Co Ltd | Pneumatic bearing device in turbocharger |
US5567129A (en) * | 1995-05-25 | 1996-10-22 | Bonardi; G. Fonda | Thrust control system for gas-bearing turbocompressors |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2500192B (en) * | 2012-03-12 | 2015-11-18 | Jaguar Land Rover Ltd | Compact Multi-Stage Turbo Pump |
GB2500192A (en) * | 2012-03-12 | 2013-09-18 | Jaguar Cars | Compact Multi-Stage Turbo Pump |
US20130241326A1 (en) * | 2012-03-19 | 2013-09-19 | Hamilton Sundstrand Corporation | Liquid cooled dynamoelectric machine |
US20150086332A1 (en) * | 2013-09-25 | 2015-03-26 | Hyundai Wia Corporation | Turbocharger |
US9856887B2 (en) | 2014-04-03 | 2018-01-02 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Rotor of a supercharging device |
DE102014206409A1 (en) | 2014-04-03 | 2015-10-08 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Rotor of a charging device |
CN104975948A (en) * | 2014-04-03 | 2015-10-14 | 博世马勒涡轮系统有限两合公司 | Rotor of supercharging devic |
CN104975948B (en) * | 2014-04-03 | 2017-12-12 | 博世马勒涡轮系统有限两合公司 | The rotor of supercharging equipment |
CN105317464A (en) * | 2014-08-05 | 2016-02-10 | 博世马勒涡轮系统有限两合公司 | Method for producing a rotor of a charging apparatus |
CN105317464B (en) * | 2014-08-05 | 2018-02-23 | 博世马勒涡轮系统有限两合公司 | For the method for the rotor for producing supercharging device |
DE102018112443A1 (en) * | 2018-05-24 | 2019-11-28 | Man Energy Solutions Se | Turbocharger and propulsion system with fuel cell and turbocharger |
CN110529253A (en) * | 2018-05-24 | 2019-12-03 | 曼恩能源方案有限公司 | Turbocharger and drive system with fuel cell and turbocharger |
US20200025075A1 (en) * | 2018-05-24 | 2020-01-23 | Man Energy Solutions Se | Turbocharger And Drive System With Fuel Cell And Turbocharger |
CN113508239A (en) * | 2018-12-03 | 2021-10-15 | Bmts科技有限及两合公司 | Exhaust-gas turbocharger or hydrodynamic plain bearing having a hydrodynamic plain bearing |
CN113508239B (en) * | 2018-12-03 | 2023-09-19 | Bmts科技有限及两合公司 | Exhaust gas turbocharger or hydrodynamic slide bearing with hydrodynamic slide bearing |
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Owner name: BMTS TECHNOLOGY GMBH & CO. KG, DE Free format text: FORMER OWNER: BOSCH MAHLE TURBO SYSTEMS GMBH & CO. KG, 70376 STUTTGART, DE |
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