WO2007128324A1 - Agencement de palier - Google Patents

Agencement de palier Download PDF

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Publication number
WO2007128324A1
WO2007128324A1 PCT/EP2006/004090 EP2006004090W WO2007128324A1 WO 2007128324 A1 WO2007128324 A1 WO 2007128324A1 EP 2006004090 W EP2006004090 W EP 2006004090W WO 2007128324 A1 WO2007128324 A1 WO 2007128324A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
arrangement according
oil
bearing arrangement
till
Prior art date
Application number
PCT/EP2006/004090
Other languages
English (en)
Inventor
Peter Frylink
Cornelius Vissers
Jacobus Zwarts
John Hedman
Original Assignee
Ab Skf
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 Ab Skf filed Critical Ab Skf
Priority to PCT/EP2006/004090 priority Critical patent/WO2007128324A1/fr
Priority to DE112006003869T priority patent/DE112006003869T5/de
Publication of WO2007128324A1 publication Critical patent/WO2007128324A1/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
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/06—Crankshafts
    • F16C3/14—Features relating to lubrication
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0043—Arrangements of mechanical drive elements
    • F02F7/0053—Crankshaft bearings fitted in the crankcase
    • 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
    • F16C21/00—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
    • 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
    • F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
    • F16C9/02—Crankshaft bearings
    • 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
    • F01M2011/026—Arrangements of lubricant conduits for lubricating crankshaft bearings
    • 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
    • F01M2011/027—Arrangements of lubricant conduits for lubricating connecting rod 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
    • F16C2360/22—Internal combustion engines

Definitions

  • the invention relates to a bearing arrangement for the crankshaft of a reciprocating engine, especially for a combustion engine, which has at least one first bearing, main bearing, for supporting the crankshaft in a housing of the reciprocating engine and at least one second bearing, rod bearing, to support a conrod on the crankshaft.
  • Bearing arrangements of this kind are normally used when a crankshaft of a combustion engine has to be supported in a housing and a number of conrods has to be supported on the crankshaft.
  • plain bearings are used for the support of the crankshaft in the housing as well as for the support of the conrods on the crankshaft plain bearings are used. It is very important, that all plain bearings in the system are supplied with sufficient lubricant. Therefore, pressurized oil is conducted into the arrangement. The oil is forwarded to all plain bearings under pressure.
  • crankshaft is equipped with a number of bores which are machined in such a way that all bearing points of the plain bearings are connected to the conduit system.
  • oil reaches all bearing points of the plain bearings.
  • a respective oil pump For supplying the conduit with sufficient oil a respective oil pump is necessary.
  • the oil pump consumes rather large amounts of energy. There is a desire to reduce the total energy consumption of for example a car. Therefore, there is a general aim to look for a solution, which would reduce the amount of pressurized oil needed. The oil pump would then not need to work as hard, or could even be replaced by a smaller oil pump, leading to reducing to the total energy consumption of for example a vehicle.
  • An object of the invention is to provide a solution which reduces the total energy consumption of for example a vehicle, by reducing the consumption of energy of an oil pump, which oil pump provides pressurized oil to one or more plain bearings.
  • an oil pump which oil pump provides pressurized oil to one or more plain bearings.
  • a s o l u ti on according to the invention is characterized in that rolling element bearings are employed for supporting the crankshaft of the reciprocating engine, which can be a combustion engine as well as a compressor, but that - as usual - plain bearings are used to support the conrods on the crankshaft. It is at the same time enabled that pressurized oil can be transferred through the rolling element bearings and that this oil is fed into a conduit which leads to the bearing points of the plain bearings for the conrods.
  • the invention suggests that the at least one first bearing for supporting the crankshaft in the housing is a rolling element bearing, having at least one outer ring and at least one inner ring, between which rolling elements are arranged, and the at least one second bearing which supports the conrods on the crankshaft is a plain bearing, wherein a fluidic connection is established by an oil channel in the crankshaft between the at least one first bearing and the at least one second bearing for supplying the second bearing with pressurized oil and wherein an oil guidance device is arranged between the at least one outer ring and the at least one inner ring of the at least one first bearing for supplying pressurized oil from one ring to the other and to the oil channel.
  • the crankshaft is supported in the housing by a plurality of first bearings and a plurality of conrods is supported on the crankshaft by a plurality of second bearings.
  • the inner ring of the rolling element bearings it is preferred that the inner ring of the first bearing is formed by a section of the crankshaft, especially by a cylindrical section of the crankshaft.
  • the oil guidance device can form an oil passage between the outer ring and the inner ring of the first bearing.
  • the oil passage can be sealed against the outer ring and/or the inner ring of the first bearing.
  • specific elements can be employed. It is also possible to achieve a sealing effect by using a small gap between the respective parts so that only a minor amount of high pressure oil can escape from the oil passage. This would have even the beneficial effect that this leaking amount would lubricate the rolling element bearing, i.e. the first bearing.
  • the oil passage can be in fluidic connection with an oil inlet hole in the outer ring. An oil inlet device can be inserted into the oil inlet hole in the outer ring which can be connected to a source for pressurized oil.
  • the oil inlet device can also form a fixation device for the outer ring in the housing, i.e. by inserting the inlet device a mechanical fixation of the outer ring in the housing can occur in both axially and radially/circumferentially.
  • the oil inlet device can further have the form of a hollow cylinder that is inserted with one axial end into a cylindrical section of the oil inlet hole.
  • the oil guidance device has two ring-shaped side walls which are arranged with an axial distance relatively to another, between which the oil passage is established.
  • at least one bridge can be arranged between the two ring-shaped side walls to keep them in defined axial distance relatively to another.
  • the bridge can extend along a part of the circumference of the side walls; here a preferred embodiment has bridges which extend along 5° till 30° of the circumference of the side walls.
  • a plurality of bridges are used which extend between the two ring-shaped side walls.
  • a high mechanical stability of the oil guidance device is reached when the side walls and the bridge have a H-shape in radial cross section.
  • a preferred embodiment of the invention has the oil guidance device connected to one of the bearing rings of the first bearing.
  • one of the bearing rings can have a ring-shaped groove in which the oil guidance device is inserted.
  • the oil guidance device has a radial outer or inner section which is reduced in width and which is inserted into the groove.
  • the oil guidance device, especially its radial inner or outer section can be arranged with an axial interference fit in the groove.
  • the oil guidance device can be connected to one of the bearing rings of the first bearing by means of a snap fit connection. Another possibility of connection is that the oil guidance device is glued, soldered or welded with one of the bearing rings of the first bearing.
  • An alternative solution has the oil guidance device formed as one piece with one of the bearing rings of the first bearing, especially with its outer ring.
  • a further alternative has the oil guidance device formed as one piece with a cage for the rolling elements of the first bearing.
  • a small radial gap is arranged between the oil guidance device and a bearing ring of the first bearing to which the oil guidance device is not attached.
  • the outer ring and/or the inner ring of the first bearing can be segmented.
  • the rings can consist of two parts.
  • the cage can have an intersection at at least one location of its circumference. If the material of the cage is sufficient elastic/flexible a single intersection around the circumference can be sufficient to mount the cage by spreading the cage during assembly.
  • the cage can also consists of two parts.
  • the oil guidance device can have an intersection at at least one location of its circumference. Also here, a single intersection can be sufficient for mounting if the material is elastic/flexible. Normally, the oil guidance device will also consist of two parts.
  • the first bearing can suitably be designed as a one-row rolling element bearing. Also, it can be a double-row rolling element bearing. In the latter case the oil guidance device can be arranged between both rows of the double-row rolling element bearing.
  • the bearing can be a cylindrical roller bearing, a toroidal bearing, a taper roller bearing or a ball bearing, especially an angular contact ball bearing.
  • the oil guidance device can be made of steel or of a non-ferrous metal, e.g. brass. It can also be made of plastic material or rubber material. In this case it can be beneficial that the material of the oil guidance device is reinforced, e.g. by glass or carbon fibers.
  • the suggested concept creates an oil guidance which transports at least most of the pressurized oil from the outer ring to the inner ring and into the corresponding hole of the oil conduit or oil channel in the crankshaft so that oil can be fed to the plain bearings of the conrods.
  • Fig. 1 shows the crankshaft with the conrods and the pistons of a combustion engine, partially in sectional view
  • Fig. 2 shows a perspective view of a first bearing of the bearing arrangement in sectional view
  • Fig. 3 shows a perspective view of a first bearing of the bearing arrangement in the assembled state
  • Fig. 4 shows a perspective view of the first bearing of the bearing arrangement in exploded view
  • Fig. 5 shows a part of a cage with oil guidance device in perspective view
  • Fig. 6 shows an alternative embodiment of a first bearing in a view
  • Fig. 7 shows a further alternative embodiment of a first bearing in a view.
  • Fig. 1 shows the crankshaft 110 of a combustion engine 100, designed as a four cylinder engine.
  • the crankshaft 110 is supported by first bearings 130 relatively to a housing 180.
  • All first bearings 130 are rolling element bearings. They have outer bearing rings 136 and inner bearing rings 138 between which rolling elements 132 are located. It should be mentioned that a cylindrical part of the crankshaft 110 functions as the inner ring 138, i. e. no separate part forms the inner ring. Not all first bearings 130 are depicted; in total 5 first bearings 130 are employed at the 5 bearings points of the crankshaft 110.
  • the combustion engine 100 has four conrods 120 which are supported on the crankshaft 110 be means of second bearings 124 which are plain bearings. At the upper end of the conrods 120 pistons 122 are arranged. To supply the second bearings 124, i. e. the plain bearings, with a sufficient amount of lubricant, i. e. with pressurized oil, oil channels 112 are machined into the crankshaft 110. The oil is fed from a pressurized oil source (not shown) via an oil inlet device 140. This oil inlet device 140 suitably also has the function to mechanically fix the outer ring 126 of the bearing 130 axially and in circumferential direction relatively to the housing 180.
  • the specific design of the first bearing 230 for one embodiment of the invention is shown in fig. 2.
  • the bearing 230 has the outer ring 236 and the crankshaft 210 functioning as inner ring 238. Between the rings 236 and 238 rolling elements 232 are arranged which are guided in known manner by a cage 234.
  • an oil guidance device 250 For transferring pressurized oil from an oil source via the oil inlet device 240 and the outer ring hole 242 to the oil channel 212 in the crankshaft 210 without a significant drop of the pressure of the oil an oil guidance device 250 is used.
  • the oil guidance device 250 has basically two rings forming side walls 262 of an oil passage 260 through which the pressurized oil is fed. Both side walls 262 are kept in a definite axial distance by means of a couple of bridges 266 which are distributed around the circumference of the side walls 262. As can be seen in the upper part of fig. 2, the side walls 262 and the bridge 266 have together in this embodiment a H-shape. Other shapes are also envisaged, such as U-shape and completely closed.
  • the outer ring 236 has a ring groove 244 in which the radial outer end region of the oil guidance device 250 is inserted, wherein this radial outer region is formed as a lip or rib 264 for connection to the outer ring 236.
  • An interference fit in axial direction between the groove 244 and the lip or rib 264 connects the oil guidance device 250 firmly with the outer ring 238.
  • the radial inner end of the oil guidance device 250 abuts with a small radial gap 270 to the inner ring 238. Thereby a sealing effect is achieved.
  • this seal is not absolutely tight, but sufficiently tight to prevent a relevant pressure drop of the oil.
  • a minor leakage due to the gap 270 supplies the rolling element bearing with some oil, which can be beneficial.
  • Fig. 3 shows the first bearing 330 in the mounted state. It can be seen that the outer ring 336 is split, i. e. is consists of two parts 337. The same applies for the oil guidance 350 and for the cage 334 which both consist of two parts.
  • FIG. 5 an alternative embodiment is shown.
  • the cage and the oil guidance device are made as one piece, specified with reference numeral 554.
  • One of the side walls 562 of the oil passage is formed by one of the side rings of the cage, the other side wall 562 is kept in relative position by the bridges 566.
  • Fig. 6 shows an alternative embodiment with a first bearing 631 designed as a double-row rolling element bearing, i. e. two rows of rolling elements 632 are arranged between the outer ring 636 and the inner ring 638.
  • the oil inlet device 640 is arranged axially between both rows of rolling elements 632.
  • the oil guidance device 650 is positioned. It can also be combined with one or the other cage.
  • the embodiment according to fig. 7 shows a further alternative solution.
  • the outer ring 736 and the oil guidance device 750 are made as one piece, specified with reference numeral 756. Both side walls 762, between the oil passage 760 is extending, are formed from the material of the outer ring 736.
  • the oil guidance device can be connected to one of the bearing rings or to the cage. It is also possible that it is just inserted between the inner ring and the outer ring of the bearing, not being fixed to one of the rings and not to the cage.
  • Oil channel 631 First bearing (rolling element bearing) - double row
  • Oil guidance device being part of outer ring

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

La présente invention concerne un agencement de palier pour le vilebrequin (110, 210, 610) d'un moteur alternatif (100), particulièrement pour un moteur à combustion, qui possède au moins un premier palier (130, 230, 330, 631) pour supporter le vilebrequin (110, 210, 610) dans un logement (180) du moteur alternatif (100) et au moins un second palier (124) pour supporter une bielle (120) sur le vilebrequin (110, 210, 610). Pour optimiser la lubrification de l'agencement de palier, l'invention est caractérisée en ce qu-au moins un premier palier (130, 230, 330, 631) est un roulement 'rouleaux, qui possède au moins une bague extérieure (136, 236, 336, 636) et au moins une bague intérieure (138, 238, 638), entre lesquelles sont agencés des éléments de roulement (132, 232, 332, 423, 632), et le ou les seconds paliers (124) sont un palier simple, un raccord fluidique étant établi par un canal à huile (112, 212, 612) dans le vilebrequin (110, 210, 610) entre les premiers paliers (130, 230, 330, 631) et les seconds paliers (124) pour fournir de l'huile sous pression au second palier (124) et un dispositif de guidage d'huile (250, 350, 452, 554, 650, 756) étant agencé entre les bagues extérieures (136, 236, 336, 636) et les bagues intérieures (138, 238, 638) des premiers paliers (130, 230, 330, 631) pour fournir de l'huile sous pression d'une bague (136, 236, 336, 636) à l'autre (138, 238, 638) et au canal à huile (112, 212, 612).
PCT/EP2006/004090 2006-05-02 2006-05-02 Agencement de palier WO2007128324A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/EP2006/004090 WO2007128324A1 (fr) 2006-05-02 2006-05-02 Agencement de palier
DE112006003869T DE112006003869T5 (de) 2006-05-02 2006-05-02 Lageranordnung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2006/004090 WO2007128324A1 (fr) 2006-05-02 2006-05-02 Agencement de palier

Publications (1)

Publication Number Publication Date
WO2007128324A1 true WO2007128324A1 (fr) 2007-11-15

Family

ID=37527778

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/004090 WO2007128324A1 (fr) 2006-05-02 2006-05-02 Agencement de palier

Country Status (2)

Country Link
DE (1) DE112006003869T5 (fr)
WO (1) WO2007128324A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2939854A1 (fr) * 2008-12-17 2010-06-18 Peugeot Citroen Automobiles Sa Moteur a combustion interne a vilebrequin sur roulements
GB2524490A (en) * 2014-03-24 2015-09-30 Mahle Int Gmbh Bearing shell
FR3092877A1 (fr) * 2019-02-19 2020-08-21 Renault S.A.S. "Moteur comportant un vilebrequin équipé d'une came de commande et de moyens de guidage en rotation"

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009029983A1 (de) 2009-06-23 2010-01-28 Daimler Ag Axiallagerelement
DE102010050621A1 (de) 2010-11-05 2012-05-10 Bayerische Motoren Werke Aktiengesellschaft Brennkraftmaschine
DE102012004883A1 (de) 2012-03-10 2013-09-12 Daimler Ag Lagerungsanordnung einer Kurbelwelle an einem Kurbelgehäuse
DE102015110742A1 (de) 2015-07-03 2017-01-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Lageranordnung für eine Kurbelwelle einer Brennkraftmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE640925C (de) * 1937-01-22 Ver Kugellagerfabriken A G Zusammengesetzte Kurbelwelle fuer Mehrzylinderbrennkraftmaschinen
US3703178A (en) * 1970-04-24 1972-11-21 List Hans Single-cylinder internal combustion engine
US6021867A (en) * 1998-07-30 2000-02-08 Krawczyk; Julie A. Air compressor bearing lubrication
DE20116445U1 (de) * 2001-10-02 2002-02-07 Thiel, Volker, 66978 Clausen Separate Lagerung einer Kurbelwelle im Gehäuse einer Brennkraftmaschine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163341A (en) 1991-10-08 1992-11-17 General Motors Corporation Crankshaft with lubrication passages
US5799547A (en) 1996-04-10 1998-09-01 Agarrat; Stanley A. Oil distribution in a combustion engine crank shaft

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE640925C (de) * 1937-01-22 Ver Kugellagerfabriken A G Zusammengesetzte Kurbelwelle fuer Mehrzylinderbrennkraftmaschinen
US3703178A (en) * 1970-04-24 1972-11-21 List Hans Single-cylinder internal combustion engine
US6021867A (en) * 1998-07-30 2000-02-08 Krawczyk; Julie A. Air compressor bearing lubrication
DE20116445U1 (de) * 2001-10-02 2002-02-07 Thiel, Volker, 66978 Clausen Separate Lagerung einer Kurbelwelle im Gehäuse einer Brennkraftmaschine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2939854A1 (fr) * 2008-12-17 2010-06-18 Peugeot Citroen Automobiles Sa Moteur a combustion interne a vilebrequin sur roulements
GB2524490A (en) * 2014-03-24 2015-09-30 Mahle Int Gmbh Bearing shell
GB2524490B (en) * 2014-03-24 2020-05-20 Mahle Int Gmbh Bearing shell
FR3092877A1 (fr) * 2019-02-19 2020-08-21 Renault S.A.S. "Moteur comportant un vilebrequin équipé d'une came de commande et de moyens de guidage en rotation"
EP3699420A1 (fr) * 2019-02-19 2020-08-26 Renault S.A.S. Moteur comportant un vilebrequin équipé d'une came de commande et de moyens de guidage en rotation

Also Published As

Publication number Publication date
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