EP1433930A1 - Schmiervorrichtung für einen Turbolader - Google Patents

Schmiervorrichtung für einen Turbolader Download PDF

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Publication number
EP1433930A1
EP1433930A1 EP02293218A EP02293218A EP1433930A1 EP 1433930 A1 EP1433930 A1 EP 1433930A1 EP 02293218 A EP02293218 A EP 02293218A EP 02293218 A EP02293218 A EP 02293218A EP 1433930 A1 EP1433930 A1 EP 1433930A1
Authority
EP
European Patent Office
Prior art keywords
lubricant
return
feed
conduits
heat shield
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.)
Granted
Application number
EP02293218A
Other languages
English (en)
French (fr)
Other versions
EP1433930B1 (de
Inventor
Eric Dumas
Pascal Hottebart
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Priority to EP20020293218 priority Critical patent/EP1433930B1/de
Priority to DE2002611000 priority patent/DE60211000T2/de
Publication of EP1433930A1 publication Critical patent/EP1433930A1/de
Application granted granted Critical
Publication of EP1433930B1 publication Critical patent/EP1433930B1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • F01M2011/021—Arrangements of lubricant conduits for lubricating auxiliaries, e.g. pumps or turbo chargers

Definitions

  • the present invention relates to lubrication arrangements for engine assemblies and in particular to a lubrication arrangement for a supercharger of an engine.
  • lubrication systems for engine superchargers, such as exhaust driven turbo-chargers.
  • Many such systems are closed circuits using engine oil as a lubricant and include an oil feed conduit and an oil return conduit.
  • the oil feed supplies oil under pressure from an oil pump of the engine to the supercharger concerned and the oil return comprises a conduit adapted to drain the oil away towards a collection area such as an oil sump of the engine.
  • Heat radiated by an exhaust system component such as the turbo-charger, exhaust manifold or catalytic converter may then affect the efficiency of lubrication of the turbo-charger. This problem may be further exacerbated in some current installations by boxing in of the engine to meet other requirements such as under-bonnet styling or pass-by noise regulations.
  • the present invention provides a lubrication arrangement for a supercharger of an engine, the arrangement including a lubricant feed conduit adapted to connect between a lubricant supply port associated with said engine and a lubricant inlet associated with said supercharger and a lubricant return conduit adapted to connect between a lubricant outlet associated with said supercharger and a lubricant return port associated with said engine, characterised in that said lubricant feed and return conduits are fixed together at one or more points into a one-piece conduit assembly, said assembly having integrated therewith a heat shield that screens at least one and preferably both said conduits along at least a part of their respective lengths.
  • An arrangement according to the present invention has the advantage that a one-piece assembly is generally easier to fit on the production line, requiring less operator actions and connections than fitting all the constituent parts separately.
  • its production will be cheaper due at least in part to the integration of the heat shield which, as a stand-alone component, would otherwise prove a high cost item.
  • Said conduit assembly may include a joint member, such as a mounting flange, to which a portion of each of said lubricant feed and return conduits is fixed.
  • Said joint member may be positioned in the region of an end portion of each of said feed and return conduits.
  • Said conduit assembly may be adapted to be connected to said supercharger via a single connection that provides fluid communication between said lubricant feed and return conduits and said supercharger lubricant inlet and outlet respectively.
  • Said heat shield may stop short of end portions of said feed and return conduits that are distal to said supercharger. End portions of said feed and return conduits that are distal to said supercharger may be separated or separable from each other. Said distal portions of said feed and return conduits may be connectable substantially independently to said lubricant supply and return ports respectively.
  • Said lubricant feed and return conduits may run substantially parallel to each other along at least a part of said conduit assembly.
  • Said heat shield may be joined to each of said feed and return conduits at one or more points along their respective lengths and in such a manner as to substantially brace said feed and return conduits against each other over at least a part of their respective lengths.
  • Said heat shield may extend around at least part of the outer wall of at least one and preferably each of said feed and return conduits and preferably in such a manner as to constrain lateral movement in at least one direction of the or each of said feed and return conduits.
  • Said heat shield may comprise a sheet material, such as a sheet steel.
  • Said heat shield may further comprise an integral bracket that is positioned part way along its length and is adapted for attachment to a fixing point.
  • Said fixing point may comprise part of an engine component, such as an exhaust system component.
  • Said heat shield may be adapted to screen at least one and preferably both of said feed and return conduits against heat radiated from at least one of said supercharger and a portion of an exhaust system, such as an exhaust manifold or a catalytic converter.
  • said catalytic converter may comprise a close-coupled or preliminary catalytic converter.
  • the present invention also provides a method of producing a lubricant conduit assembly suitable for use in association with a supercharger of an engine, the method including :
  • the method may include providing a joint member integrated into said conduit assembly and fixing an end portion of each of said feed and return conduits to said joint member.
  • the method may include adapting said joint member for connecting said conduit assembly to said supercharger via a single connection that provides fluid communication between said feed and return conduits and a lubricant inlet and a lubricant outlet respectively of said supercharger.
  • the method may include stopping said heat shield short of end portions of said feed and return conduits that are distal to said supercharger.
  • the method may include running said feed and return conduits substantially parallel to each other along at least a part of said conduit assembly.
  • the method may include joining said heat shield to said feed and return conduits at one or more points along their respective lengths.
  • the method may include joining said heat shield to said feed and return conduits in such a manner as to brace said feed and return conduits against each other over at least a part of their respective lengths.
  • the method may include extending said heat shield around at least a part of the outer wall of each of said feed and return conduits and preferably in such a manner as to constrain lateral movement in at least one direction of each of said feed and return conduits.
  • Said heat shield may comprise a sheet material such as a sheet steel and may be extended around said feed and return conduits using a deformation technique, e.g. rolling, bending or folding.
  • the method may include integrating a bracket into said heat shield, preferably part way along its length and of such a form as to enable bracing of said heat shield against an engine component, such as an exhaust system component.
  • the method may include forming and/or joining said heat shield in such a manner that, when said conduit assembly is in an in-use position, said heat shield screens at least one and preferably both of said feed and return conduits against heat radiated from said super charger or from a portion of an exhaust system, such as an exhaust manifold or a catalytic converter.
  • an engine assembly 10 is based around an engine cylinder block 12 and a cylinder head 14.
  • Charge air is supplied towards inlet ports of the cylinder head 14 via an inlet manifold (not shown).
  • the charge air is provided at least in part by forced induction using a supercharger.
  • the supercharger may be embodied in the form of an exhaust driven turbo-charger 16, mounted for example on an exhaust manifold 18 from which the turbo-charger 16 is driven.
  • the level of boost may be controlled by means of a waste-gate apparatus 24.
  • the gases pass down a short exhaust duct 26 into an entry cone 28A of an exhaust gas after-treatment apparatus such as a close-coupled catalytic converter 30.
  • the catalytic converter 30 may be the only catalytic converter in the exhaust system or may be a preliminary catalyst upstream of one or more further exhaust gas after-treatment apparatus.
  • Exhaust gases leave the catalytic converter 30 via an exit cone 28B.
  • the catalytic converter may be disposed with its longitudinal axis running substantially parallel to a longitudinal axis running through the cylinder block 12. It will be appreciated, however, that the or each exhaust gas after-treatment apparatus 30 may be positioned further downstream than the exemplary close-coupled position and/or at different angles.
  • the exhaust turbine 22 is mounted on a turbine shaft 32 common with a compressor turbine 34 of the turbo-charger 16, the common mounting being adapted to transmit drive from the exhaust turbine 22 to the compressor turbine 34. While the turbo-charger 16 is on boost, driving of the compressor turbine 34 compresses inlet air entering the turbo-charger 16 via an inlet channel 36 such that it leaves a charge-air exit 38 of the turbo-charger 16 under pressure for forced induction.
  • the turbo-charger charge-air exit 38 is connected to the inlet manifold, optionally via an inter-cooling arrangement.
  • the turbo-charge 16 includes a set of bearings 40 adapted to support the turbine shaft 32.
  • the turbo-charger bearings 40 are provided with lubrication by a lubricant conduit assembly 42 that includes a lubricant feed conduit 44 and a lubricant return conduit 46.
  • Lubricant is supplied in the form of engine oil under pressure from the lubrication system of the engine 10.
  • the oil supplied to the turbo-charger 16 will preferably have been recently filtered and more preferably also cooled so, as to provide optimum protection to the bearings 40.
  • the oil may be pressurised by an engine oil pump (not shown) and is supplied to a lubricant supply port 48 associated with the engine 10, which supply port 48 may take the form of a pressurised oil outlet low down on the cylinder block.
  • the lubricant feed conduit 44 may comprise a tube, such as a pipe, provided with a high pressure fitting at each end.
  • the high pressure fitting 50 may comprise a banjo-type fitting attachable to the high pressure lubricant supply port 48 by means of a banjo-bolt 52 and associated sealing washers.
  • the lubricant feed conduit 44 is adapted to run up the outside of the cylinder block 12 and up towards the turbo-charger 16.
  • the conduit 44 is attached to the turbo-charger 16 via a joint member in the form of a flange 54 to which the feed conduit 44 is fixed.
  • a lubricant feed hole 56 is defined through the flange 54 and provides fluid communication from the feed conduit 44 towards a lubricant inlet that is associated with the turbo-charger and preferably connected to the turbine-shaft bearings 40.
  • the lubricant return conduit 46 Also fixed to the flange 54 is one end of the lubricant return conduit 46, with an associated lubricant return hole 58 defined therethrough.
  • the lubricant return hole 58 provides fluid communication between a lubricant outlet associated with the turbo-charger 16 and the lubricant return conduit 46.
  • the lubricant outlet is preferably part of a lubricant drain arrangement of the turbo-charger 16 adapted to drain spent lubricant away from the turbo-charger bearings 40.
  • the lubricant return conduit 46 and its associated return hole 58 through the flange 54 are preferably of a larger diameter/cross-sectional area than the lubricant feed conduit 44 and its lubricant feed hole 56.
  • the lubricant return conduit 46 may comprise a tube, such as a pipe, and is formed with a large diameter of such proportions as to ensure drain-down of spent lubricant without the build-up of back pressure and able to cope with potential foaming of the returning lubricant.
  • the return conduit 46 connects between the lubricant outlet of the turbo-charger and an lubricant return port 60 associated with the engine 10.
  • the lubricant return port 60 may be defined in the assembly of the engine block 12 and is connected to the end of the lubricant return conduit 46 that is distal to the turbo-charger 16.
  • the connection may be made by means of a flexible conduit 62, such as a short length of rubber hose.
  • the lubricant feed and return conduits 44, 46 preferably run substantially parallel to each other along at least a part of their respective lengths. Such parallel running may commence in the region of the flange 54 to which they are both fixed and may take the form of a parallel route downwards away from the turbo-charger 16 and circumventing the close-coupled catalytic converter.
  • a heat shield 64 is provided that is integrated into the conduit assembly 42.
  • the heat shield may comprise a sheet material, such as a sheet steel, and may be shaped at least in part by a deformation technique such as rolling, bending or folding.
  • the heat shield 64 is disposed across portions of the feed and return conduits 44, 46 in such a manner that it is interposed between them and the catalytic converter 30 and provides screening against it.
  • the heat shield 64 is integrated into the one-piece conduit assembly by being joined to the feed and return conduits 44, 46 along at least a part of their respective lengths and in such a manner as to substantially brace the feed and return conduits 44, 46 against each other over at least a part of their respective lengths.
  • the heat shield 64 may be attached to the conduits 44, 46 by a heat technique such as welding, brazing or soldering.
  • the heat shield 64 may extend around at least part of the outer wall of one and preferably each of the feed and return conduits 44, 46 and in such a manner as to constrain lateral movement in at least one direction of the or each conduit 44, 46 so enveloped.
  • the heat shield 64 preferably stops short of the ends of the feed and return conduits 44, 46 that are distal from the turbo-charger 16. This is so that the distal end portions of those conduits 44, 46 are separated or separable from each other so that they can be connected substantially independently to the lubricant supply port 48 and lubricant return port 60 as appropriate.
  • the heat shield 64 may also be provided with an integral bracket 66 part way along its length for bracing the heat shield 64 against a fixing point.
  • the fixing point may comprise an engine component and in one embodiment the bracket may brace the heat shied 64 against an exhaust system component such as the exhaust manifold.
  • the heat shield 64 screens at least one and preferably both of the feed and return conduits 44, 46 along at least a part of their respective lengths against the influence of factors that might disturb the efficiency of lubrication provided therethrough to the turbo-charger 16.
  • the heat shield is disposed around the feed and return conduits along portions thereof that in the installed position of the conduit assembly 42 face the hazard or hazards of concern, e.g. the close coupled catalytic converter 30. Protection may be more important for the lubricant feed conduit 44, as it is carrying lubricant that has not yet been used and a degradation in its quality may have severe effects on the turbo-charger bearings 40.
  • the lubricant it is carrying is under high pressure and damage to its conduit 44 may result in the lubricant leaking onto or into hot areas.
  • Such disturbing factors may include, but are not limited to, heat radiated from for example the turbo-charger 16, the exhaust manifold 18 or the catalytic converter 30.
  • Other disturbing factors may include infrared radiation caused by raised temperatures of the exit cone 28B.
  • a still further example of a disturbing effect may comprise an eventual failure of another possibly neighbouring component, such as for example a failure in a welded joint on the exit cone 28B of the catalytic converter 30.
  • a weld failure in the exit cone 28B of the catalytic converter 30 may result in the escape of flames and these may appear almost as if they were from a blow torch.
  • a jet of flame near to or hitting an unprotected lubricant supply conduit 44 might overheat or break down the lubricant being supplied therethrough to the turbo-charger bearings 40.
  • the heat shield may also provide some protection against leakage of lubricant from either the feed or return conduits 44, 46.
  • a leakage of lubricant may hit a hot part of the catalytic converter 30 with undesirable consequences.
  • the corollary is that the hot parts are also screened from failure of fluid integrity of the same conduits 44, 46 or leakage of lubricant in the region of the flange 54. Under such circumstances, the heat shield 64 channels leaking lubricant down away from hot components and towards a safer area such as the bottom of the engine block 12 where there is a reduced risk of fire.
  • a one-piece arrangement according to the present invention has the advantage that a one-piece assembly is generally easier to fit on the production line, requiring less operator actions and connections than fitting all the constituent parts separately.
  • connecting the conduit assembly 42 to the turbo-charger 16 via a single connection at the flange 54 is simpler than separate screw in fixings used in some prior art arrangements for each of a feed and a return conduit.
  • production of the lubrication arrangement in one piece will be cheaper due at least in part to the integration of the heat shield 64 into the conduit assemble which, as a stand-alone/separate heat shield, would otherwise prove a high cost item.
EP20020293218 2002-12-23 2002-12-23 Schmiervorrichtung für einen Turbolader Expired - Fee Related EP1433930B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20020293218 EP1433930B1 (de) 2002-12-23 2002-12-23 Schmiervorrichtung für einen Turbolader
DE2002611000 DE60211000T2 (de) 2002-12-23 2002-12-23 Schmiervorrichtung für einen Turbolader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20020293218 EP1433930B1 (de) 2002-12-23 2002-12-23 Schmiervorrichtung für einen Turbolader

Publications (2)

Publication Number Publication Date
EP1433930A1 true EP1433930A1 (de) 2004-06-30
EP1433930B1 EP1433930B1 (de) 2006-04-26

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EP20020293218 Expired - Fee Related EP1433930B1 (de) 2002-12-23 2002-12-23 Schmiervorrichtung für einen Turbolader

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EP (1) EP1433930B1 (de)
DE (1) DE60211000T2 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2917777A1 (fr) * 2007-06-19 2008-12-26 Renault Sas Dispositif et tube de lubrification de turbocompresseur
FR2933132A1 (fr) * 2008-06-30 2010-01-01 Renault Sas Echangeur de chaleur pour la fixation de conduits de lubrification
CN103089552A (zh) * 2011-11-08 2013-05-08 通用电气公司 润滑系统和包含该润滑系统的风力涡轮机
DE102017201293A1 (de) 2017-01-27 2018-08-02 Bayerische Motoren Werke Aktiengesellschaft Turbolader für eine Verbrennungskraftmaschine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009038493A1 (de) * 2009-08-21 2011-02-24 Bpw Bergische Achsen Kg Vorrichtung zum Befestigen eines elektrischen Bauteils einer Fahrzeugbremse

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6047821A (ja) * 1983-08-24 1985-03-15 Hitachi Ltd タ−ボ過給機の排油機構
US5261237A (en) * 1992-11-30 1993-11-16 Benson Steven R Oil drain and turbo assembly support
US5381834A (en) * 1993-09-14 1995-01-17 Teleflex Incorporated Hose assembly including reinforced layer having wear reducing fibers
DE19548542A1 (de) * 1994-12-29 1996-07-04 Usui Kokusai Sangyo K Ltd Metall-Rohrleitung mit einer schützenden Überzugsschicht für ein Automobil
DE19636841A1 (de) * 1996-09-11 1998-03-12 Opel Adam Ag Zusammengesetzte Rohrleitung und Verfahren zu deren Herstellung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6047821A (ja) * 1983-08-24 1985-03-15 Hitachi Ltd タ−ボ過給機の排油機構
US5261237A (en) * 1992-11-30 1993-11-16 Benson Steven R Oil drain and turbo assembly support
US5381834A (en) * 1993-09-14 1995-01-17 Teleflex Incorporated Hose assembly including reinforced layer having wear reducing fibers
DE19548542A1 (de) * 1994-12-29 1996-07-04 Usui Kokusai Sangyo K Ltd Metall-Rohrleitung mit einer schützenden Überzugsschicht für ein Automobil
DE19636841A1 (de) * 1996-09-11 1998-03-12 Opel Adam Ag Zusammengesetzte Rohrleitung und Verfahren zu deren Herstellung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 179 (M - 399) 24 July 1985 (1985-07-24) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2917777A1 (fr) * 2007-06-19 2008-12-26 Renault Sas Dispositif et tube de lubrification de turbocompresseur
FR2933132A1 (fr) * 2008-06-30 2010-01-01 Renault Sas Echangeur de chaleur pour la fixation de conduits de lubrification
CN103089552A (zh) * 2011-11-08 2013-05-08 通用电气公司 润滑系统和包含该润滑系统的风力涡轮机
EP2592325A1 (de) * 2011-11-08 2013-05-15 General Electric Company Schmiersystem und Windturbine mit derartigem Schmiersystem
DE102017201293A1 (de) 2017-01-27 2018-08-02 Bayerische Motoren Werke Aktiengesellschaft Turbolader für eine Verbrennungskraftmaschine
DE102017201293B4 (de) 2017-01-27 2019-01-31 Bayerische Motoren Werke Aktiengesellschaft Turbolader für eine Verbrennungskraftmaschine
US11193498B2 (en) 2017-01-27 2021-12-07 Bayerische Motoren Werke Aktiengesellschaft Turbocharger for an internal combustion engine

Also Published As

Publication number Publication date
DE60211000T2 (de) 2007-01-25
DE60211000D1 (de) 2006-06-01
EP1433930B1 (de) 2006-04-26

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