WO2013163410A1 - Main bearing cap with locating feature - Google Patents
Main bearing cap with locating feature Download PDFInfo
- Publication number
- WO2013163410A1 WO2013163410A1 PCT/US2013/038190 US2013038190W WO2013163410A1 WO 2013163410 A1 WO2013163410 A1 WO 2013163410A1 US 2013038190 W US2013038190 W US 2013038190W WO 2013163410 A1 WO2013163410 A1 WO 2013163410A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- protrusion
- bearing cap
- bearing
- cap
- foot
- Prior art date
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
- 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
- F16C43/00—Assembling bearings
- F16C43/02—Assembling 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
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
- F16C9/02—Crankshaft 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
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
- F16C9/04—Connecting-rod bearings; Attachments thereof
-
- 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
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/008—Identification means, e.g. markings, RFID-tags; Data transfer means
Definitions
- This invention relates to bearing blocks of the type in which a bearing supporting bore is formed with half of the bore in a support structure and the other half in a bearing cap which is secured to the support structure, in which the cap must be precisely refitted to the support structure after machining operations on the bore are carried out.
- this invention relates to a sintered powder metal bearing cap having features for providing precise relocation of the cap relative to the support structure.
- the essential function of a bearing cap is to retain and locate a rotary shaft, or a bearing for a rotary shaft which in turn retains and locates the shaft, relative to a support structure.
- the main bearing cap of an engine bolts to a bulkhead of the engine crankcase and together with the bulkhead retains and locates the crankshaft journal in place while the crankshaft is rotating.
- the crankshaft journal runs against two half shell bearings which are fitted to the main bearing cap and the engine bulkhead semi -circular bores,
- QB ⁇ 990029.00196 ⁇ 20857674.1 is achieved by a machining operation called line boring.
- the main bearing caps are bolted to the bulkheads of the engine block, and then a boring bar fitted with a cutting tool is used to machine the bores in the assembly. This ensures the two half rounds formed by the main bearing cap and the bearing block form as near to a perfect circle as possible.
- a finishing operation involving a grinding hone is often used to achieve the extremely fine tolerances needed for quiet running and efficient engine performance .
- An improved bearing cap is disclosed that has
- the new structure helps to improve repositioning of the bearing cap during assembly to a bearing support structure and prevents left- to-right or side-to-side vibration which can induce foot fretting.
- a bearing cap is disclosed of the type that is bolted to a bearing support structure so as to define a bearing bore between the cap and the structure.
- This bearing cap may be made of sintered powder metal .
- the bearing cap has bolt holes for securing the cap to the structure through the feet of the cap and into the bearing support structure using, for example, bolts.
- the cap has at least two feet with one foot on each side of the bore and with at least one bolt hole extending through each foot.
- Each foot has a protrusion formed on it that is disposed between the bolt hole and a side of said foot.
- the protrusion is between the bolt hole and a lateral side of the foot.
- a plurality of ribs may be formed on the protrusion.
- the ribs may be crush ribs that are plastically deformable (along with the bearing support structure) during assembly of the bearing cap to the bearing support
- the protrusion may be formed proximate a side of said foot such that any point along the protrusion is closer to the side than to the bolt hole. Accordingly, the protrusion is not integral with or central to the position of the bolt hole in that the protrusion does not need to be specially located relative to the bolt hole feature.
- the use of protrusions formed near the lateral edges of the feet can help to locate and hold the part in the left-to-right direction within the engine block.
- the protrusion can be generally linear and extend in a direction generally perpendicular to a front side face and a rear side face of the bearing cap along the bottom surface.
- the protrusion can include a plurality of ribs that extend in a direction generally
- the protrusion may be tapered as it extends away from the bottom surface of the foot. This can help to facilitate pressing of the protrusion in to the bearing support structure.
- the bearing support structure might have recesses that are adapted to receive the protrusions with
- the sintered powder metal may be iron or an iron alloy which generally is a less deformable material.
- the ribs may be deformable relative to the
- FIG. 1 is a perspective view of a main bearing cap according to one embodiment of the invention.
- FIG. 2 is a bottom view of the bearing cap of FIG. 1.
- FIG. 3 is a side cross-sectional view taken through the bearing cap along line 3-3 in FIG. 2.
- FIG. 4 is a detailed bottom view of a portion of the bearing cap taken along line 4-4 of FIG. 2 that shows one of the protrusions in greater detail.
- FIG. 5 is a detailed perspective view of one of the feet in which one of the protrusions is shown in greater detail.
- FIGS. 1 through 5 illustrate one embodiment of a main bearing cap 10 according to the invention.
- the cap 10 defines a semicircular bore 12 which together with the semicircular bore of the engine bulkhead establishes the full bore through which the crankshaft of the engine extends and is journaled. Journal bearings may be received in the bore between the surface of the crankshaft and the surface of the bore, as is well known.
- the bearing cap 10 may be notched as at 14 to receive an ear of the journal bearings so as to prevent the journal bearings from
- the semicircular bore 12 extends through the bearing cap 10 from a front
- the bore 12 defines, on each of its lateral sides, a foot portion 20 of the cap 10.
- the two foot portions 20 are joined by a central bridge portion 22.
- a bolt hole 24 extends through each foot portion 20 from the top side 26 to the bottom side 28 of the cap 10.
- the cap 10 may also be provided with threaded set screw holes (not shown) extending from the lateral sides 30 and 32 at right angles into the respective bolt holes 24, so as to lock the retaining bolts in position after the cap 10 is bolted to the engine bulkhead support structure.
- Lateral sides 30 and 32 join the longitudinal sides 16 and 18 at the ends of the cap 10.
- each foot portion 20 includes a flat bottom surface 34.
- the pair of flat bottom surfaces 34 are co-planar with one another in the embodiment shown. However, in other embodiments, it is contemplated that these bottom surfaces need not be co-planar, but may instead be, for example, parallel with one another to facilitate uniaxial pressing during assembly.
- a protrusion 36 is formed is formed on each of the flat bottom surfaces 34 of the foot portions 20 of the cap 10.
- the protrusions 36 are disposed between the bolt hole 24 and a lateral side 30 or 32 of each respective foot portion 20.
- protrusions 36 are separated from the bolt holes 24. This means that they are not directly involved with the alignment of the bolt holes 24 and are not integral with or essential to their position during initial pressing. This permits some amount of latitude and tolerance in the exact placement of these protrusions 36 on the bottom surface of the foot .
- protrusions 36 are different from bosses which may be formed around the bolt holes 24 in that the
- protrusions 36 are formed proximate the lateral side 30 or 32 of each foot portion 20. Geometrically speaking, in the embodiment shown, for any given point along these protrusions 36, the protrusion 36 is closer to the lateral side 30 or 32 than to the corresponding bolt hole 24.
- the protrusions, as illustrated, are elongated, with their major axes (the axis that runs along its length dimension) parallel to the axis of the bore partially defined by the bearing cap, and with the ribs on its side surfaces perpendicular to its major axis.
- the protrusions 36 are generally linear and extend in a direction generally
- the protrusion 36 supports a plurality of ribs 38.
- the ribs 38 are disposed on opposing sides of the line of the protrusion 36 and in a direction perpendicular to the line of extension of the
- the ribs 38 are symmetrical about the medial line of the protrusion 36, with each of the ribs 36 having a matching rib 38 on the opposite side.
- the ribs 38 are engineered to plastically deform along with the bearing support structure when the protrusion 36 is pressed into the bearing support structure. This plastic
- deformation can be achieved, for example, by making the ribs 38 to have thin walls.
- the main body of the protrusion 36 underlying the ribs is designed to substantially retain its shape, such that the majority of the deformation occurs in the ribs 38 and the support structure.
- the protrusions 36 also taper as they extend away from the foot portion 20. This permits the protrusions 36 to wedge into the material of the support structure into which they are received and spread it apart. As stated, recesses can be formed in the bearing support structure to receive the protrusions with interference upon initial
- deformable ribs 38 help to facilitate a "perfect reposition" of the main bearing cap into the mating structure during assembly upon re-assembly after insertion of the crankshaft.
- This bearing cap 10 can be made using powder
- metallurgical processes by taking a powder metal material (such as, for example, iron or an iron alloy which usually includes some amount of binder or lubricant) , compacting the powder metal material in a tool and die set to form a powder metal preform, and then sintering the powder metal preform to form a sintered powder metal part .
- a powder metal material such as, for example, iron or an iron alloy which usually includes some amount of binder or lubricant
- protrusions 36 and the ribs 38 can be formed in the as-compacted preform. This means that little to no finishing work may be
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112014026627-1A BR112014026627B1 (en) | 2012-04-26 | 2013-04-25 | MAIN BEARING COVER WITH LOCATION FUNCTION |
CN201380022000.5A CN104246245B (en) | 2012-04-26 | 2013-04-25 | Main beating cap with location feature |
JP2015509132A JP6434401B2 (en) | 2012-04-26 | 2013-04-25 | Main bearing cap with positioning function |
DE112013002230.3T DE112013002230T5 (en) | 2012-04-26 | 2013-04-25 | Main bearing cap with positioning feature |
US14/385,662 US9273733B2 (en) | 2012-04-26 | 2013-04-25 | Main bearing cap with locating feature |
US15/001,522 US9528555B2 (en) | 2012-04-26 | 2016-01-20 | Main bearing cap with locating feature |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261638901P | 2012-04-26 | 2012-04-26 | |
US61/638,901 | 2012-04-26 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/385,662 A-371-Of-International US9273733B2 (en) | 2012-04-26 | 2013-04-25 | Main bearing cap with locating feature |
US15/001,522 Continuation US9528555B2 (en) | 2012-04-26 | 2016-01-20 | Main bearing cap with locating feature |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013163410A1 true WO2013163410A1 (en) | 2013-10-31 |
Family
ID=48325936
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2013/038190 WO2013163410A1 (en) | 2012-04-26 | 2013-04-25 | Main bearing cap with locating feature |
Country Status (6)
Country | Link |
---|---|
US (2) | US9273733B2 (en) |
JP (1) | JP6434401B2 (en) |
CN (1) | CN104246245B (en) |
BR (1) | BR112014026627B1 (en) |
DE (1) | DE112013002230T5 (en) |
WO (1) | WO2013163410A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3051234A1 (en) * | 2016-05-12 | 2017-11-17 | Peugeot Citroen Automobiles Sa | METHOD FOR REINFORCING AN ASSEMBLY BETWEEN A BEARING CAP AND A CYLINDER HOUSING |
DE102017119058A1 (en) * | 2017-08-21 | 2019-02-21 | Schunk Sintermetalltechnik Gmbh | Bearing cover and bearing arrangement |
DE102018006376A1 (en) | 2017-09-15 | 2019-03-21 | Miba Sinter Austria Gmbh | bearing cap |
US10393267B2 (en) | 2016-04-18 | 2019-08-27 | Ford Global Technologies, Llc | Metal-to-metal sealing |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IN2015KN00656A (en) * | 2012-11-19 | 2015-07-17 | Gkn Sinter Metals Llc | |
GB2538975B (en) * | 2015-06-01 | 2018-04-04 | Jaguar Land Rover Ltd | Bearing cap having positioning projections. |
GB2533445B (en) | 2015-06-30 | 2017-07-19 | Ford Global Tech Llc | A shaft assembly |
AT517392A1 (en) | 2015-07-14 | 2017-01-15 | Miba Sinter Austria Gmbh | Split bearing arrangement |
CN106402169B (en) * | 2015-08-03 | 2019-10-22 | 米巴精密零部件(中国)有限公司 | Split type bearing assembly |
AT518673B1 (en) * | 2016-06-03 | 2018-03-15 | Miba Sinter Austria Gmbh | bearing arrangement |
AT519625A1 (en) * | 2017-01-24 | 2018-08-15 | Miba Sinter Austria Gmbh | bearing cap |
DE102017006355A1 (en) | 2017-06-23 | 2018-12-27 | Mtu Friedrichshafen Gmbh | bearing cap |
CN111779768B (en) * | 2020-06-16 | 2022-01-18 | 临清市百诺轴承有限公司 | Long service life's bearing ring |
DE102021101711A1 (en) | 2021-01-27 | 2022-07-28 | Bayerische Motoren Werke Aktiengesellschaft | Main bearing cap, reciprocating internal combustion engine and method for its manufacture |
Citations (7)
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JPS608522A (en) * | 1983-06-27 | 1985-01-17 | Hino Motors Ltd | Structure of connecting rod cap joint surface |
JPH07305716A (en) * | 1994-05-13 | 1995-11-21 | Wakayama Nainenki Kk | Large end side assembling structure for connecting rod |
GB2344151A (en) * | 1998-11-25 | 2000-05-31 | Daimler Chrysler Ag | Split connecting-rod for i.c. engines |
US6086258A (en) | 1996-05-03 | 2000-07-11 | Zenith Sintered Products, Inc. | Precisely repositionable bearing cap |
WO2007081715A2 (en) | 2006-01-06 | 2007-07-19 | Gkn Sinter Metals, Inc. | Precision location and low force repositioning of powder metal components |
US20110158569A1 (en) * | 2008-09-01 | 2011-06-30 | Miba Sinter Austria Gmbh | Bearing cover |
EP2602498A1 (en) * | 2011-12-07 | 2013-06-12 | Volvo Car Corporation | A split bearing arrangement and a method of manufacturing a split bearing arrangement |
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US6471406B1 (en) * | 1996-05-03 | 2002-10-29 | Gkn Sinter Metals, Inc. | Side-bolt bearing caps |
DE19819080A1 (en) * | 1998-04-29 | 1999-11-04 | Bayerische Motoren Werke Ag | Machine housing with a split bearing arrangement, in particular plain bearings in reciprocating piston machines |
WO2002088556A1 (en) * | 2001-05-01 | 2002-11-07 | Gkn Sinter Metals, Inc. | Surface densification of powder metal bearing caps |
US7198278B2 (en) | 2004-03-24 | 2007-04-03 | Genie Industries, Inc. | Vehicle support system |
JP5223814B2 (en) * | 2009-08-10 | 2013-06-26 | 三菱自動車工業株式会社 | Crankshaft bearing device |
JP2011252523A (en) * | 2010-06-01 | 2011-12-15 | Jtekt Corp | Rolling bearing device |
IN2015KN00656A (en) * | 2012-11-19 | 2015-07-17 | Gkn Sinter Metals Llc |
-
2013
- 2013-04-25 US US14/385,662 patent/US9273733B2/en active Active
- 2013-04-25 BR BR112014026627-1A patent/BR112014026627B1/en not_active IP Right Cessation
- 2013-04-25 JP JP2015509132A patent/JP6434401B2/en active Active
- 2013-04-25 CN CN201380022000.5A patent/CN104246245B/en active Active
- 2013-04-25 WO PCT/US2013/038190 patent/WO2013163410A1/en active Application Filing
- 2013-04-25 DE DE112013002230.3T patent/DE112013002230T5/en active Pending
-
2016
- 2016-01-20 US US15/001,522 patent/US9528555B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS608522A (en) * | 1983-06-27 | 1985-01-17 | Hino Motors Ltd | Structure of connecting rod cap joint surface |
JPH07305716A (en) * | 1994-05-13 | 1995-11-21 | Wakayama Nainenki Kk | Large end side assembling structure for connecting rod |
US6086258A (en) | 1996-05-03 | 2000-07-11 | Zenith Sintered Products, Inc. | Precisely repositionable bearing cap |
GB2344151A (en) * | 1998-11-25 | 2000-05-31 | Daimler Chrysler Ag | Split connecting-rod for i.c. engines |
WO2007081715A2 (en) | 2006-01-06 | 2007-07-19 | Gkn Sinter Metals, Inc. | Precision location and low force repositioning of powder metal components |
US20110158569A1 (en) * | 2008-09-01 | 2011-06-30 | Miba Sinter Austria Gmbh | Bearing cover |
EP2602498A1 (en) * | 2011-12-07 | 2013-06-12 | Volvo Car Corporation | A split bearing arrangement and a method of manufacturing a split bearing arrangement |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10393267B2 (en) | 2016-04-18 | 2019-08-27 | Ford Global Technologies, Llc | Metal-to-metal sealing |
FR3051234A1 (en) * | 2016-05-12 | 2017-11-17 | Peugeot Citroen Automobiles Sa | METHOD FOR REINFORCING AN ASSEMBLY BETWEEN A BEARING CAP AND A CYLINDER HOUSING |
DE102017119058A1 (en) * | 2017-08-21 | 2019-02-21 | Schunk Sintermetalltechnik Gmbh | Bearing cover and bearing arrangement |
DE102018006376A1 (en) | 2017-09-15 | 2019-03-21 | Miba Sinter Austria Gmbh | bearing cap |
US10400816B2 (en) | 2017-09-15 | 2019-09-03 | Miba Sinter Austria Gmbh | Bearing cover |
Also Published As
Publication number | Publication date |
---|---|
CN104246245A (en) | 2014-12-24 |
US9528555B2 (en) | 2016-12-27 |
US9273733B2 (en) | 2016-03-01 |
US20150055902A1 (en) | 2015-02-26 |
BR112014026627B1 (en) | 2021-11-09 |
BR112014026627A2 (en) | 2017-06-27 |
JP2015514951A (en) | 2015-05-21 |
US20160131192A1 (en) | 2016-05-12 |
JP6434401B2 (en) | 2018-12-05 |
DE112013002230T5 (en) | 2015-01-15 |
CN104246245B (en) | 2017-06-06 |
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Nomenclature | Die Sets |
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