WO2008056002A2 - Palier radial - Google Patents

Palier radial Download PDF

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Publication number
WO2008056002A2
WO2008056002A2 PCT/EP2007/062231 EP2007062231W WO2008056002A2 WO 2008056002 A2 WO2008056002 A2 WO 2008056002A2 EP 2007062231 W EP2007062231 W EP 2007062231W WO 2008056002 A2 WO2008056002 A2 WO 2008056002A2
Authority
WO
WIPO (PCT)
Prior art keywords
radial bearing
bearing
radial
bush
housing
Prior art date
Application number
PCT/EP2007/062231
Other languages
German (de)
English (en)
Other versions
WO2008056002A3 (fr
Inventor
Peter Neuenschwander
Marco Di Pietro
Bruno Ammann
Original Assignee
Abb Turbo Systems 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 Abb Turbo Systems Ag filed Critical Abb Turbo Systems Ag
Publication of WO2008056002A2 publication Critical patent/WO2008056002A2/fr
Publication of WO2008056002A3 publication Critical patent/WO2008056002A3/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/02—Sliding-contact bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/26—Systems consisting of a plurality of sliding-contact bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/23—Gas turbine engines
    • F16C2360/24—Turbochargers

Definitions

  • the invention relates to the field of exhaust gas turbochargers for supercharged internal combustion engines. It relates to a radial bearing of such exhaust gas turbocharger.
  • Exhaust gas turbochargers are used to increase the performance of internal combustion engines (reciprocating engines).
  • An exhaust gas turbocharger consists of an exhaust gas turbine in the exhaust gas stream of the internal combustion engine and a compressor in the intake tract of the internal combustion engine.
  • the turbine wheel of the exhaust gas turbine is set in rotation by the exhaust gas flow of the engine and drives the impeller of the compressor via a shaft.
  • the compressor increases the pressure in the intake tract of the internal combustion engine, so that when sucking a larger amount of air enters the combustion chambers.
  • the bearing bushes of the radial bearings are often not firmly installed in the bearing housing, but floating, with radial play.
  • This arrangement is referred to as squeeze oil damper.
  • a positioning is needed, but which allows movement in the radial play.
  • This positioning is realized in conventional exhaust gas turbochargers, for example by screwed into the bearing housing stud bolts and corresponding holes in the radial bearing bush.
  • Fig. 5 shows such a prior art arrangement as used widely, such as in TPL turbochargers of the ABB company.
  • the end faces of the radial bearing bushes can be designed as thrust bearings.
  • the auxiliary thrust bearing is integrated into the radial bearing bush.
  • the Auxiliary thrust bearing absorbs the forces against the main thrust direction.
  • the force of the optionally profiled formed auxiliary bearing surface is transmitted to the bearing housing on the opposite end face of the radial bearing bush.
  • a positive connection between the radial bearing bush and the surrounding bearing housing is realized to prevent the rotation of the radial bearing bush.
  • the form fit to prevent rotation is realized by a contour on an end face of the radial bearing bush and in the housing. This can be dispensed with additional elements such as the stud bolts known from the prior art.
  • the shape of the contour can be designed so that only a single mounting position of the radial bearing in the housing is possible.
  • Fig. 1 is an isometric view of a cut, inventively designed radial bearing with a used in the bearing housing
  • FIG. 2 is an isometric view of the radial bearing bush of FIG. 1;
  • FIG. 3 shows a section along the shaft axis through a radial bearing designed according to the invention
  • FIG. 4 shows a section along the shaft axis through an exhaust gas turbocharger with a bearing cover secured on the turbine side according to the invention
  • FIG. 4 shows a section along the shaft axis through an exhaust gas turbocharger with a bearing cover secured on the turbine side according to the invention
  • Fig. 5 shows a section through a radial bearing according to the prior art with a secured by means of positioning pin radial bearing bush.
  • Fig. 1 shows in a view a cut radial bearing of an exhaust gas turbocharger. Not shown is the shaft which is rotatably mounted in the radial bearing.
  • the bearing housing 30 which is arranged in modern exhaust gas turbochargers between the compressor and the turbine, a radial bearing bush 40 is used with low radial clearance.
  • a lubrication gap supplied with oil is arranged between the bearing housing and the outer circumference of the radial bearing bush.
  • a circumferential oil supply channel 42 is provided. The radial bearing bushing 40 is inserted from the left into the opening in the bearing housing in the illustrated embodiment.
  • a radially projecting, circumferential federal (collar) 44 the axial displacement is limited in the direction of insertion.
  • a groove 32 may be provided for receiving a retaining ring in the bearing housing.
  • the locking ring 49 can be seen in the sectional view of FIG. 3 in the inserted position.
  • a positive connection between the radial bearing bush and the surrounding bearing housing is realized to prevent the rotation of the radial bearing bush.
  • the form fit to prevent rotation is realized in the illustrated embodiment by a contour 45 in the radially projecting collar of the radial bearing bush and a corresponding shape in the bearing housing.
  • the shape of the contour can be designed so that only a single mounting position of the radial bearing bush in the bearing housing is possible, or that the radial bearing bush can be used only in a certain angular position.
  • the relative position of an external oil supply to the recessed into the radial bearing bushing channels and bushings for oil supply can be adjusted.
  • the force can be transmitted from the auxiliary bearing on the bearing housing on the radially projecting collar.
  • the surface 41 on the end face of the radial bearing bush is designed for this purpose as a bearing surface. Due to the significantly shorter support length, the thermal reduction of the axial clearance is greatly reduced.
  • FIG. 2 shows the radial bearing bush without bearing housing. Clearly visible is the circumferentially formed oil supply channel 42 and a passage for the lubricating oil through the radial bearing bush.
  • FIG. 3 shows a section along the shaft of the exhaust-gas turbocharger through a radial bearing designed in accordance with the invention. If necessary, the auxiliary bearing surface 41 on the end face of the radial bearing bushing receives power from the left-adjacent rotating component, which may be the compressor wheel or a component clamped between the compressor wheel and an axial shaft shoulder. The absorbed force is transmitted via the radially projecting collar to an axial stop of the bearing housing 30.
  • FIG. 4 shows a turbocharger sectional view with an embodiment of the compressor and turbine-side radial bearing according to the invention.
  • the axial displacement of the turbine-side radial bearing in the direction of the turbine can be prevented by one or more webs integrated in a bearing cap 31.
  • this function could be realized by a snap ring.
  • the mounting screws 60 of the seal cover 31 on the bearing housing 30 with mounted shaft 20 and attached turbine wheel 10 can not be solved, the mounting screws 60 according to the invention have a predetermined breaking point 61. These break when pressed out the shaft with welded Turbinen workedem radial bearing from the bearing housing and thus protect the threaded holes in the bearing housing 30 from damage.
  • the illustrated fastening screws other fasteners can be used with appropriate breaking points.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supercharger (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

Palier radial pour un turbocompresseur à gaz d'échappement aux fins de fixation d'un arbre (20) dans un logement de palier (30) et comprenant un coussinet radial (40) monté entre l'arbre (20) et le logement de palier (30). Le coussinet radial (40, 50) est pourvu d'un contour (45) qui est destiné à entrer en contact avec un contour correspondant du logement de palier (30) et qui relie le coussinet radial (40, 50) et le logement de palier (30) par complémentarité de forme dans la direction circonférentielle.
PCT/EP2007/062231 2006-11-10 2007-11-12 Palier radial WO2008056002A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06023404 2006-11-10
EP06023404.4 2006-11-10

Publications (2)

Publication Number Publication Date
WO2008056002A2 true WO2008056002A2 (fr) 2008-05-15
WO2008056002A3 WO2008056002A3 (fr) 2008-12-11

Family

ID=39271431

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/062231 WO2008056002A2 (fr) 2006-11-10 2007-11-12 Palier radial

Country Status (1)

Country Link
WO (1) WO2008056002A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018146101A1 (fr) * 2017-02-08 2018-08-16 Abb Turbo Systems Ag Palier lisse à fixation axiale hydrodynamique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US715006A (en) * 1902-06-27 1902-12-02 Johan Axel Bomgren Bushing.
US3026152A (en) * 1960-11-14 1962-03-20 Liggio Leo Luca Interchangeable bearings
US4134175A (en) * 1977-09-01 1979-01-16 Liquid Controls Corporation Non-rotating bushing
WO1999007982A1 (fr) * 1997-08-06 1999-02-18 Alliedsignal Inc. Systeme de palier integre pour turbocompresseur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US715006A (en) * 1902-06-27 1902-12-02 Johan Axel Bomgren Bushing.
US3026152A (en) * 1960-11-14 1962-03-20 Liggio Leo Luca Interchangeable bearings
US4134175A (en) * 1977-09-01 1979-01-16 Liquid Controls Corporation Non-rotating bushing
WO1999007982A1 (fr) * 1997-08-06 1999-02-18 Alliedsignal Inc. Systeme de palier integre pour turbocompresseur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018146101A1 (fr) * 2017-02-08 2018-08-16 Abb Turbo Systems Ag Palier lisse à fixation axiale hydrodynamique
US10801543B2 (en) 2017-02-08 2020-10-13 Abb Schweiz Ag Plain bearing with hydrodynamic axial securing

Also Published As

Publication number Publication date
WO2008056002A3 (fr) 2008-12-11

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