DE10040508A1 - Exhaust gas turbocharger for internal combustion engine, has bearing housing cooled with air released from charge-air cooler arranged between compressor and suction unit of internal combustion engine - Google Patents

Exhaust gas turbocharger for internal combustion engine, has bearing housing cooled with air released from charge-air cooler arranged between compressor and suction unit of internal combustion engine

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Publication number
DE10040508A1
DE10040508A1 DE10040508A DE10040508A DE10040508A1 DE 10040508 A1 DE10040508 A1 DE 10040508A1 DE 10040508 A DE10040508 A DE 10040508A DE 10040508 A DE10040508 A DE 10040508A DE 10040508 A1 DE10040508 A1 DE 10040508A1
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DE
Germany
Prior art keywords
air
internal combustion
combustion engine
bearing housing
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Withdrawn
Application number
DE10040508A
Other languages
German (de)
Inventor
Marcel Hassler
Adolf Kremer
Hans-Georg Lehmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Priority to DE10040508A priority Critical patent/DE10040508A1/en
Publication of DE10040508A1 publication Critical patent/DE10040508A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F01D25/08—Cooling; Heating; Heat-insulation
    • F01D25/12—Cooling
    • 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
    • F01D25/08—Cooling; Heating; Heat-insulation
    • F01D25/12—Cooling
    • F01D25/125—Cooling of bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P1/00—Air cooling
    • F01P1/06—Arrangements for cooling other engine or machine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/08—Controlling of coolant flow the coolant being cooling-air by cutting in or out of pumps
    • 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
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/04—Pump-driving arrangements
    • F01P2005/046—Pump-driving arrangements with electrical pump drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2031/00—Fail safe
    • F01P2031/30—Cooling after the engine is stopped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/02—Intercooler
    • 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
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0412—Multiple heat exchangers arranged in parallel or in series
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Supercharger (AREA)

Abstract

The exhaust gas turbocharger (7) comprises of a turbine (9), a bearing housing (10), a compressor (6), and a charge-air cooler (8) arranged between the compressor and suction unit of an internal combustion engine. The bearing housing is cooled with the air (11) released from the charge-air cooler.

Description

Die Erfindung betrifft einen für eine Brennkraftmaschine vorgesehenen Abgasturbolader mit Turbine, Lagergehäuse, Verdichter und einem zwischen Verdichter und Ansauganlage der Brennkraftmaschine angeordneten Ladeluftkühler.The invention relates to an internal combustion engine provided exhaust gas turbocharger with turbine, bearing housing, Compressor and one between the compressor and the intake system Internal combustion engine arranged intercooler.

Es ist allgemein bekannt Brennkraftmaschinen mittels Abgasturbolader, bestehend aus Turbine, Lagergehäuse und Verdichter aufzuladen. Besonders vorteilhaft für die Aufladung ist ein zusätzlicher Ladeluftkühler, der zwischen dem Verdichter des Abgasturboladers und einer Ansauganlage der Brennkraftmaschine angeordnet ist. Als Beispiel sei hier "Gerigk, Bruhn, u. a.; Kraftfahrzeugtechnik; 3. Auflage; 1999; Westermann; Braunschweig" Abb. 1 auf Seite 304 genannt.It is generally known to charge internal combustion engines by means of an exhaust gas turbocharger, consisting of a turbine, bearing housing and compressor. An additional charge air cooler, which is arranged between the compressor of the exhaust gas turbocharger and an intake system of the internal combustion engine, is particularly advantageous for charging. An example is "Gerigk, Bruhn, among others; automotive engineering; 3rd edition; 1999; Westermann; Braunschweig" Fig. 1 on page 304.

Um ein Überhitzen der Lagerstelle und damit vorzeitiges Altern und Zersetzen des Öls zu vermeiden, ist das Lagergehäuse gekühlt. Das Lagergehäuse eines Abgasturboladers wird durch das Schmieröl im Lagergehäuse oder bei größerer Belastung - insbesondere bei Ottomotoren - durch Motorkühlwasser gekühlt, wie in EP 0 160 243 B1 beschrieben. Sowohl durch Ölkühlung als auch durch Wasserkühlung wird eine ausreichende Kühlung des Lagergehäuses erreicht.To overheat the bearing and thus premature aging and to prevent the oil from decomposing is the bearing housing cooled. The bearing housing of an exhaust gas turbocharger is made by the lubricating oil in the bearing housing or under heavy loads - especially with gasoline engines - cooled by engine cooling water, as described in EP 0 160 243 B1. Both by oil cooling and Adequate cooling of the Bearing housing reached.

Bei einer Wasserkühlung des Lagergehäuses ist eine Verbindung in Form von Rohren oder Schläuchen vom Abgasturbolader zum Motorkühlwasserkreislauf erforderlich. Um eine zuverlässige Versorgung des Abgasturboladers mit Kühlwasser zu erreichen, muß der Abgasturbolader in seiner geodätischen Höhe auf dem gleichen Niveau oder tiefer als der Kühlwasserkreislauf der Brennkraftmaschine sein. Falls der Abgasturbolader ein hohes geodätisches Niveau aufweist, ist die Gefahr der Luftblasenbildung und Luftblasenansammlung im Abgasturbolader und damit einer schlechten Kühlung gegeben.There is a connection when the bearing housing is water cooled in the form of pipes or hoses from the turbocharger to Engine cooling water circuit required. To be reliable To supply the exhaust gas turbocharger with cooling water, the exhaust gas turbocharger must be in its geodesic height on the same level or lower than the cooling water circuit of the  Be an internal combustion engine. If the exhaust gas turbocharger is high geodetic level is the danger of Air bubble formation and air bubble accumulation in the exhaust gas turbocharger and given poor cooling.

Ein weiterer Nachteil der Wasserkühlung besteht in der großen Wassermenge, die sich im Turbolader und den zugehörigen Schlauchleitungen befindet. Diese Wassermenge ist nicht nur aufgrund ihres Gewichtes von Nachteil, sondern sie verhindert auch ein schnelles Aufheizen der Brennkraftmaschine beim Kaltstart, was mit erhöhten Emissionen verbunden ist.Another disadvantage of water cooling is the large one Amount of water that is in the turbocharger and the associated Hose lines is located. This amount of water is not only disadvantageous due to their weight, but prevents them also a quick heating up of the internal combustion engine Cold start, which is associated with increased emissions.

Der Erfindung liegt die Aufgabe zugrunde, derartige Nachteile zu beseitigen und einfache Maßnahmen zu treffen, die eine gute Kühlung des Lagergehäuses des Abgasturboladers für jeden Zustand der Brennkraftmaschine ermöglichen.The invention has for its object such disadvantages eliminate and take simple measures that are good Cooling of the exhaust turbocharger bearing housing for everyone Enable condition of the internal combustion engine.

Zur Lösung der Aufgabe dienen die im kennzeichnenden Teil des Anspruches 1 angegebenen Merkmale.To solve the problem serve in the characterizing part of the Claim 1 specified features.

Vorteilhafte und zweckmäßige Weiterbildungen der Erfindung sind den weiteren Patentansprüchen zu entnehmen.Advantageous and expedient developments of the invention are the other claims.

Bei einem erfindungsgemäßen Abgasturbolader für eine Brennkraftmaschine erfolgt die Kühlung durch Luft, die in das Lagergehäuse geleitet wird. Das Lagergehäuse ist für diese Kühlungsart speziell ausgebildet mit einem Luftkanal anstatt eines üblichen Wasserkanals, und mit Kühlrippen, die die Wärme aus dem Lagergehäuse an die Kühlluft abgeben.In an exhaust gas turbocharger according to the invention for a Internal combustion engine is cooled by air flowing into the Bearing housing is passed. The bearing housing is for this Type of cooling specially designed with an air duct instead a common water channel, and with cooling fins that dissipate the heat Release it from the bearing housing to the cooling air.

Die Kühlluft für das Lagergehäuse wird vom Ladeluftstrom abgezweigt. Um eine gute Kühlung zu erreichen, wird die Kühlluft dem Ladeluftstrom nach Passieren des Ladeluftkühlers entnommen. An dieser Stelle des Ladeluftstromes ist die Ladeluft abgekühlt. The cooling air for the bearing housing is generated by the charge air flow diverted. To achieve good cooling, the Cooling air to the charge air flow after passing through the charge air cooler taken. At this point in the charge air flow is the Charge air cooled.  

Bei einer Entnahme der Kühlluft für das Lagergehäuse aus dem Ladeluftstrom entfällt die Installation einer Luftpumpe, die im Dauerbetrieb Kühlluft fördert. Dies ist besonders vorteilhaft, da dadurch weder Bauraum für eine Luftpumpe benötigt wird, noch Kosten für die Luftpumpeninstallation anfallen.When removing the cooling air for the bearing housing from the Charge air flow eliminates the installation of an air pump, which in the Continuous operation promotes cooling air. This is particularly advantageous since neither space for an air pump is required, nor Air pump installation costs apply.

Anstatt die Kühlluft nach Passieren des Lagergehäuses in die Umgebung entweichen zu lassen, ist es besonders vorteilhaft, die Kühlluft vom Lagergehäuse stromauf der Saugseite des Verdichters in die Ladeluftleitung oder direkt zur Saugseite des Verdichters zu leiten. Da die Kühlluft bereits gereinigt ist, entfällt die Überwindung des Druckverlustes der Ansaugluft im Luftfilter. Die Kühlluft strömt mit leichtem Überdruck in die Ansaugleitung vor dem Verdichter, in der Unterdruck herrscht. Dadurch verringert sich die Verdichterarbeit.Instead of the cooling air after passing through the bearing housing in the Letting the surroundings escape, it is particularly advantageous the cooling air from the bearing housing upstream of the suction side of the Compressor in the charge air line or directly to the suction side of the compressor. Because the cooling air is already cleaned , there is no need to overcome the pressure loss in the intake air in the air filter. The cooling air flows in with a slight overpressure the suction line before the compressor, in the negative pressure prevails. This reduces the compressor work.

Bei Betrieb der Brennkraftmaschine herrscht immer genügend Druck in der Ladeluftleitung stromab des Verdichters, um einen Teil der Ladeluft zum Kühlen des Lagergehäuses zu verwenden.When the internal combustion engine is operating, there is always sufficient Pressure in the charge air line downstream of the compressor by one Use part of the charge air to cool the bearing housing.

Nach dem Abstellen der Brennkraftmaschine ist der Abgasturbolader noch heiß und muß nachgekühlt werden. Für diesen relativ kurzen Zeitraum von wenigen Minuten des Nachkühlens wird durch eine Luftpumpe Kühlluft zum Lagergehäuse des Abgasturboladers gepumpt. Da die Brennkraftmaschine steht, ist die Luftpumpe bevorzugt elektrisch angetrieben.After switching off the internal combustion engine Exhaust gas turbocharger still hot and must be cooled. For this relatively short period of a few minutes After cooling, an air pump turns cooling air into the bearing housing of the exhaust gas turbocharger. Since the engine is stopped, the air pump is preferably electrically driven.

Die Luftpumpe zur Sekundärlufteinblasung, die bei stehender Brennkraftmaschine nicht benötigt wird, liefert für diesen kurzen Zeitraum bei ausreichendem Wirkungsgrad genügend Luft zum Kühlen des Lagergehäuses. Der Luftstrom der Luftpumpe zur Sekundärlufteinblasung wird zu diesem Zweck, durch Ventile oder ähnliche Stellelemente gesteuert, zur Kühlluftleitung zum Lagergehäuse geleitet. The air pump for secondary air injection, which with standing Internal combustion engine is not needed, supplies for this sufficient air for a short period of time with sufficient efficiency for cooling the bearing housing. The air flow from the air pump Secondary air injection is used for this purpose, through valves or Similar actuators controlled, to the cooling air line to Headed bearing housing.  

Die Erfindung ist in der Zeichnung anhand eines Ausführungsbeispieles dargestellt und näher erläutert.The invention is in the drawing based on a Embodiment shown and explained in more detail.

An einen Zylinderkopf 1 einer nicht näher dargestellten Brennkraftmaschine sind ein Ansaugkrümmer 2 und ein Auspuffkrümmer 3 befestigt. Die Ansaugluft strömt von einem Einlauf 4 über ein Luftfilter 5 zu einem Verdichter 6 eines Abgasturboladers 7. Vom Verdichter 6 wird die verdichtete Luft zu einem Ladeluftkühler 8 gepumpt, dort abgekühlt und zum Ansaugkrümmer 2 geleitet. Die Verbindungen zwischen Luftfilter 5, Verdichter 6, Ladeluftkühler 8 und Ansaugkrümmer 2 sind als Rohre oder Schläuche ausgebildet.An intake manifold 2 and an exhaust manifold 3 are attached to a cylinder head 1 of an internal combustion engine (not shown in more detail). The intake air flows from an inlet 4 via an air filter 5 to a compressor 6 of an exhaust gas turbocharger 7 . The compressed air is pumped from the compressor 6 to a charge air cooler 8 , cooled there and passed to the intake manifold 2 . The connections between air filter 5 , compressor 6 , charge air cooler 8 and intake manifold 2 are designed as pipes or hoses.

Die Abgase der Brennkraftmaschine strömen vom Auspuffkrümmer 3 zur Turbine 9 des Abgasturboladers 7 und von dort zur nicht gezeigten Abgasanlage. Turbine 9 und Verdichter 6 des Abgasturboladers 7 sind über ein Lagergehäuse 10 miteinander verbunden. Im Lagergehäuse 10 befindet sich außerdem die Lagerung für die Welle mit dem Turbinenrad und Verdichterrad nicht gezeigt.The exhaust gases of the internal combustion engine flow from the exhaust manifold 3 to the turbine 9 of the exhaust gas turbocharger 7 and from there to the exhaust system, not shown. Turbine 9 and compressor 6 of the exhaust gas turbocharger 7 are connected to one another via a bearing housing 10 . In the bearing housing 10 , the bearing for the shaft with the turbine wheel and compressor wheel is also not shown.

Unmittelbar stromab des Ladeluftkühlers 8 zweigt eine Kühlluftleitung 11 ab, die zum Lagergehäuse 10 des Abgasturboladers 7 führt. Die im Verdichter 6 verdichtete Luft wird im Ladeluftkühler 8 abgekühlt und strömt im Wesentlichen zum Ansaugkrümmer 2. Ein kleiner Teil strömt zum Lagergehäuse 10 und kühlt dort die Lagerung der Welle mit dem Turbinenrad und Verdichterrad. Nach Durchströmen des Lagergehäuses 10 wird die Kühlluft auf der Saugseite des Verdichters 6 der gereinigten Ansaugluft aus dem Luftfilter 5 beigemischt und im Verdichter 6 verdichtet.Immediately downstream of the charge air cooler 8 , a cooling air line 11 branches off, which leads to the bearing housing 10 of the exhaust gas turbocharger 7 . The air compressed in the compressor 6 is cooled in the charge air cooler 8 and essentially flows to the intake manifold 2 . A small part flows to the bearing housing 10 and there cools the bearing of the shaft with the turbine wheel and compressor wheel. After flowing through the bearing housing 10 , the cooling air on the suction side of the compressor 6 is mixed with the cleaned intake air from the air filter 5 and compressed in the compressor 6 .

Eine elektrisch angetriebene Sekundärluftpumpe 12 dient zur Abgasnachbehandlung durch Lufteinblasung beim Start der Brennkraftmaschine. In einer Sekundärluftleitung 13 zwischen der Sekundärluftpumpe 12 und dem Zylinderkopf 1 ist ein Ventil 14 vorgesehen. Im normalen Betrieb der Brennkraftmaschine ist die Sekundärluftpumpe ausgeschaltet. Beim Start der Brennkraftmaschine wird die Sekundärluftleitung 13 freigegeben und die Sekundärluftpumpe 12 für wenige Minuten eingeschaltet. Die Sekundärluftpumpe 12 fördert Luft zur Lufteinblasung zum Zylinderkopf.An electrically driven secondary air pump 12 is used for exhaust gas aftertreatment by blowing in air when the internal combustion engine is started. A valve 14 is provided in a secondary air line 13 between the secondary air pump 12 and the cylinder head 1 . The secondary air pump is switched off during normal operation of the internal combustion engine. When the internal combustion engine starts, the secondary air line 13 is released and the secondary air pump 12 is switched on for a few minutes. The secondary air pump 12 delivers air for blowing in air to the cylinder head.

Beim Ausschalten der Brennkraftmaschine wird die Sekundärluftpumpe 12 eingeschaltet und das Ventil 14 wird derart umgeschaltet, daß die Sekundärluftpumpe Luft über eine Leitung 15 zur Kühlung zum Lagergehäuse 10 fördert. Dadurch kühlt das Lagergehäuse 10 schnell ab und es findet kein Verkoken und Altern des Schmieröls statt. Das Abschalten der Sekundärluftpumpe 12 findet temperaturgesteuert abhängig von der Lagergehäusetemperatur oder zeitgesteuert statt.When the internal combustion engine is switched off, the secondary air pump 12 is switched on and the valve 14 is switched over in such a way that the secondary air pump delivers air to the bearing housing 10 via a line 15 for cooling. As a result, the bearing housing 10 cools down quickly and there is no coking and aging of the lubricating oil. The secondary air pump 12 is switched off in a temperature-controlled manner as a function of the bearing housing temperature or in a time-controlled manner.

Claims (5)

1. Für eine Brennkraftmaschine vorgesehener Abgasturbolader mit Turbine, Lagergehäuse, Verdichter, und einem zwischen Verdichter und Ansauganlage der Brennkraftmaschine angeordneten Ladeluftkühler dadurch gekennzeichnet, daß das Lagergehäuse (10) mit Luft zwangsgekühlt ist.1. For an internal combustion engine provided exhaust gas turbocharger with turbine, bearing housing, compressor, and a charge air cooler arranged between the compressor and the intake system of the internal combustion engine, characterized in that the bearing housing ( 10 ) is forced-cooled with air. 2. Abgasturbolader nach Anspruch 1 dadurch gekennzeichnet, daß die Kühlluft zur Kühlung des Lagergehäuses (10) stromabwärts vom Ladeluftkühler (8) vom Ladeluftstrom abzweigt.2. Exhaust gas turbocharger according to claim 1, characterized in that the cooling air for cooling the bearing housing ( 10 ) branches off downstream of the charge air cooler ( 8 ) from the charge air flow. 3. Abgasturbolader nach Anspruch 1 oder 2 dadurch gekennzeichnet, daß die Kühlluft nach Passieren des Lagergehäuses (10) stromauf der Saugseite des Verdichters (6) in den Ladeluftstrom mündet.3. Exhaust gas turbocharger according to claim 1 or 2, characterized in that the cooling air after passing through the bearing housing ( 10 ) opens upstream of the suction side of the compressor ( 6 ) in the charge air flow. 4. Abgasturbolader nach Anspruch 3 dadurch gekennzeichnet, daß eine die Kühlluft zur Kühlung durch das Lagergehäuse (10) fördernde Pumpe vorgesehen ist, die bei nicht ausreichendem Ladedruck stromab des Ladeluftkühlers (8) zuschaltbar ist.4. Exhaust gas turbocharger according to claim 3, characterized in that a cooling air for cooling through the bearing housing ( 10 ) promoting pump is provided, which can be connected downstream of the charge air cooler ( 8 ) at insufficient charge pressure. 5. Abgasturbolader nach Anspruch 4 dadurch gekennzeichnet, daß die Pumpe eine bereits vorhandene Sekundärluftpumpe (12) einer Brennkraftmaschine ist.5. Exhaust gas turbocharger according to claim 4, characterized in that the pump is an existing secondary air pump ( 12 ) of an internal combustion engine.
DE10040508A 2000-08-18 2000-08-18 Exhaust gas turbocharger for internal combustion engine, has bearing housing cooled with air released from charge-air cooler arranged between compressor and suction unit of internal combustion engine Withdrawn DE10040508A1 (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6668553B1 (en) * 2002-09-13 2003-12-30 Honeywell International Inc. Ejector-based cooling system for turbochargers
EP1391586A1 (en) * 2002-08-20 2004-02-25 BorgWarner Inc. Turbocharger
EP1348848A3 (en) * 2002-03-26 2006-03-29 Toyota Jidosha Kabushiki Kaisha Turbocharger
US7056103B2 (en) * 2004-03-05 2006-06-06 Honeywell International, Inc. Method and apparatus for cooling turbomachinery components
US9677437B2 (en) 2013-12-19 2017-06-13 Ford Global Technologies, Llc Turbocharger lubricant coolant
DE102017201104A1 (en) 2016-01-28 2017-08-03 Ford Global Technologies, Llc Motor vehicle with a turbocharger arrangement
FR3047515A1 (en) * 2016-02-08 2017-08-11 Renault Sas AIR SUPPLY DEVICE OF AN INTERNAL COMBUSTION ENGINE.
DE102019129366A1 (en) * 2019-10-30 2021-05-06 Audi Ag Drive device with an internal combustion engine and a compressor and a method for operating a drive device

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1348848A3 (en) * 2002-03-26 2006-03-29 Toyota Jidosha Kabushiki Kaisha Turbocharger
EP1391586A1 (en) * 2002-08-20 2004-02-25 BorgWarner Inc. Turbocharger
US7140848B2 (en) * 2002-08-20 2006-11-28 Borgwarner Inc. Turbocharger with air-cooled magnetic bearing system
US6668553B1 (en) * 2002-09-13 2003-12-30 Honeywell International Inc. Ejector-based cooling system for turbochargers
US7056103B2 (en) * 2004-03-05 2006-06-06 Honeywell International, Inc. Method and apparatus for cooling turbomachinery components
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