GB2330788A - Method for producing a connecting rod - Google Patents

Method for producing a connecting rod Download PDF

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Publication number
GB2330788A
GB2330788A GB9820954A GB9820954A GB2330788A GB 2330788 A GB2330788 A GB 2330788A GB 9820954 A GB9820954 A GB 9820954A GB 9820954 A GB9820954 A GB 9820954A GB 2330788 A GB2330788 A GB 2330788A
Authority
GB
United Kingdom
Prior art keywords
bush
connecting rod
lubricating
oil
bore
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
GB9820954A
Other versions
GB2330788B (en
GB9820954D0 (en
Inventor
Martin Honold
Erwin Schmidt
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.)
Daimler Benz AG
Original Assignee
Daimler Benz 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 Daimler Benz AG filed Critical Daimler Benz AG
Publication of GB9820954D0 publication Critical patent/GB9820954D0/en
Publication of GB2330788A publication Critical patent/GB2330788A/en
Application granted granted Critical
Publication of GB2330788B publication Critical patent/GB2330788B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/14—Special methods of manufacture; Running-in
    • 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
    • F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
    • F16C7/02—Constructions of connecting-rods with constant length
    • F16C7/023—Constructions of connecting-rods with constant length for piston engines, pumps or the like
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J7/00—Piston-rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/04—Connecting rods

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

A connecting rod 1 of an internal combustion engine has a connecting rod small-end bush 4 which is inserted with a press fit into a bore in an eye 2 of the connecting rod. In this case, the connecting rod small-end bush has, on the inner radially continuous cylindrical surface(5, Fig.2) of its bush bore 9, a plurality of lubricating-oil pockets 6 which extend over the axial length of the connecting rod small-end bush 4 and which open into the radially continuous lubricating-oil bores (7, Fig.2) which overlap with lubricating-oil recesses 8 likewise formed in the eye 2 of the connecting rod 1. The production of a bush component is first carried out by means of cold or hot forming, with a bush orifice (14, Fig.5), the diameter of which is smaller than the nominal size of the bush bore 9, depressions which form the lubricating-oil pockets 6 being formed in the continuous cylindrical surface of the bush orifice (14). The insertion of the bush component with a press fit into the bore 4 of the connecting rod 1 then takes place, with the lubricating-oil pockets 6 at the same time being oriented in position according to the lubricating-oil bores 8. Finally, the production of the bush bore is carried out by the machining of the bush orifice (14) to nominal size.

Description

1 Method for producing a connecting rod 2330788 The invention relates to a
method for producing a connecting rod for an internal combustion engine, the connecting rod having a connecting rod small-end bush which is inserted with a press fit in a bore in an eye of the connecting rod, the connecting rod small-end bush having, on the inner radially continuous cylindrical surface of its bush bore, one or more lubricating-oil pockets which extend over the axial length of the connecting rod small-end bush and which open into the radially continuous lubricating-oil bores which overlap with lubricating-oil recesses likewise formed in the eye of the connecting rod.
In connecting rods of this kind, it is known to produce the connecting rod small-end bush with a cylindrical bush bore having a nominal size and, subsequently, to form the lubricating-oil pockets by broaching or milling of the inner radially continuous cylindrical surface of the bush bore. The operation of producing the lubricating-oil pockets is very complicated. Moreover, it is not readily possible to generate any cross- section of the lubricating-oil pockets.
DE 195 32 953 AI describes a method and a device for producing pressurerolled tubes having inner wall thickenings. In this case, in order to produce pressure-rolled tubes having inner wall thickenings, it is proposed to use a pressure mandrel which consists of a first pressure mandrel fastened on the machine-spindle side and of a second pressure mandrel fastened on the tailstock side, the two pressure mandrels being connected releasabIy at the connection point. Both pressure mandrels have, at the connection point, a conicity which corresponds to the desired inner thickening of the finished tube. In a first operation, the pressure rollers penetrate, at the connection point, as far as the desired outside diameter of the finished tube and work in the machine-spindle direction or tailstock direction. In a second operation, the pressure rollers are moved back to the connection point and work in the opposite direction. The two pressure mandrels are subsequently separated, so that the finished tube can be removed.
The present invention seeks to provide a method for producing a connecting rod, by means of which the lubricating-oil pockets can be produced with at least essentially any desired cross-sectional contour in a simple way.
2 According to the present invention there is provided a method for producing a connecting rod having a connecting rod small-end bush which is inserted with a press fit in a bore in an eye of the connecting rod, the connecting rod small-end bush having, on the inner radially continuous cylindrical surface of its bush bore, one or more lubricating- oil pockets which extend over the axial length of the connecting rod small-end bush and which open into the radially continuous lubricating- oil bores which overlap with lubricating-oil recesses likewise formed in the eye of the connecting rod, including the following steps which take place in succession, the production of a bush component by means of cold or hot forming, with a bush orifice, the diameter of which is smaller than the nominal size of the bush bore, depressions which form the lubricating-oil pockets being formed in the continuous cylindrical surface of the bush orifice, and a radially outer cylindrical surface with oversize being obtained, the machining of the radially outer cylindrical surface of the bush component to nominal size, the insertion of the bush component with a press fit into the bore of the connecting rod, with the lubricating-oil pockets at the same time being oriented in position according to the lubricating-oil bores of the eye, the production of the bush bore by the machining of the bush orifice to nominal size.
In this case, cold or hot forming makes it possible to design the crosssection of the lubricating-oil pockets with substantial freedom, whilst the separate generation of the nominal size of the bush bore makes it possible for the wall of the bush bore to be made with a high degree of accuracy and a high surface quality.
If the bush component is cold-formed by form drawing and, in particular, the bush orifice by inner form drawing, the strength properties of the connecting rod small-end bush are increased even further, thus leading, in turn, to an increase in the resistance to wear.
Particularly when the lubricating-oil pockets are to be given relatively great depth, it is advantageous if the bush component is hot-formed by extrusion.
The production of the bush orifice may, if appropriate, be carried out even in one operation, if form drawing or extrusion takes place by means of a mandrel 3 of the pressing die or a plug of the drawing die, which mandrel or plug has a crosssection which corresponds to the cross-section of the bush orifice and from which radial elevations corresponding to the lubricating- oil pocket cross-sections project. In this case, the elevations may have essentially any desired cross-section, in particular even an asymmetric cross-section.
It is particularly economical if a tube is produced by cold or hot forming and a plurality of connecting rod small-end bushes are made by cutting the tube to length. In this case, cutting to length at the same time ensures the exact length of the connecting rod small-end bush.
In order to obtain a good distribution of the lubricating film, preferably a plurality of lubricating-oil pockets, distributed uniformly on the circumference of the inner radially continuous cylindrical surface of the bush bore, are produced.
So that, after the connecting rod small-end bush has been inserted into the bore of the connecting rod, the lubricating-oil bores in the said bush are absolutely in alignment with the lubricating-oil recesses in the eye of the connecting rod, the lubricating-oil bores andfor the lubricating-oil recesses can be produced after the connecting rod smallend bush has been inserted into the bore of the connecting rod.
Another possibility is to produce the lubricating-oil bores and/or the lubricating-oil recesses before the connecting rod small-end bush is inserted into the bore of the connecting rod.
The connecting rod small-end bush may acquire its finally machined outer radially continuous cylindrical surface merely by virtue of cold or hot forming, in particular by virtue of form drawing. If this cylindrical surface is to be produced with particularly narrow tolerance, the connecting rod small-end bush may be produced with a larger outside diameter than the nominal diameter by means of cold or hot forming and the outer radially continuous cylindrical surface can subsequently be worked to the nominal size of the outside diameter.
An embodiment of the invention is illustrated in the drawing and is described in more detail below. In the drawing:
Figure 1 shows a side view of an end of a connecting rod which has a connecting rod small-end bush, Figure 2 shows a longitudinal section through the connecting rod according to 4 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 1, shows a top view of the connecting rod according to Figure 1, shows an axial section through the connecting rod small-end bush of the connecting rod according to Figure 1, shows a cross-section through the connecting rod small-end bush according to Figure 4, shows a top view of the connecting rod small-end bush according to Figure 4, shows a longitudinal section through a drawing die, shows an end view of a plug of the drawing die according to Figure 7. The connecting rod 1 illustrated in Figures 1 to 3 has, at one end, a widening having a continuous bore 3, by means of which an eye 2 is formed. A connecting rod small-end bush 4 is inserted with a press fit into the bore 3. On the inner radially continuous cylindrical surface 5 of the bush bore 9 of the said bush are formed two lubricating-oil pockets 6 which are distributed uniformly on the circumference and which extend over an axial length of the connecting rod small-end bush 4. As may be gathered from Figures 4 to 6 which show the connecting rod small-end bush 4, one lubricating-oil pocket 6, starting from a lubricating-oil bore 7, extends in the anti- clockwise direction, whilst the other lubricating-oil pocket 6 extends from a further lubricating-oil bore 7 in the clockwise direction. In the region of the lubricating-oil bores 7, the lubricating-oil pockets 6 have their greatest depth which decreases continuously towards the other end of the lubricating-oil pocket 6. According to the illustration in Figure 1, continuous lubricating-oil recesses 8, via which the lubricating oil can be supplied to the lubricating-oil pockets 6, are formed in the eye 2 of the connecting rod 1 in alignment with the radially directed, likewise continuous lubricating-oil bores of the connecting rod small-end bush 4. In Figures 4 and 5, unbroken lines illustrate the connecting rod smaIl- end bush 4 in its final state, whilst a broken line illustrates the bush component after a form-drawing operation. In this case, it can be seen that the region of the lubricatingoil pocket 6 already possesses its final contour produced by means of a drawing 1 operation, whereas the region of the bush orifice 14 and the radially continuous outer cylindrical surface 11 still have oversize and have to be brought to the nominal size by machining.
Figure 7 illustrates how a tubular bush blank is brought to a smaller inside and outside diameter by drawing in a drawing die 12 having a plug 10, the bush orifice 14 being formed to a cross-section which corresponds to the cross-section, illustrated in Figure 8, of the plug 10.
This plug 10 has, on its outer circumference, radially projecting elevations 15, by means of which the form of the lubricating-oil pockets 6 is produced. After a tube 16 has been produced in the drawing operation, the latter is separated into individual bushes having the nominal size length. The outer cylindrical surface 11 is then machined to nominal size and the bush is inserted with a press fit into the bore 3 of the connecting rod 1. This is carried out, with the lubricating-oil pocket 6 at the same time being oriented in position relative to the lubricatingoil recesses 8 already produced. The lubricating-oil bores 7 are drilled through the lubricating-oil recesses 8 and are thereby exactly in alignment with the lubricating-oil recesses 8. The machining of the bush bore 9 to nominal size and a partial bevelling 13 of the end faces of the eye 2 of the connecting rod 1 then take place.
6

Claims (11)

Claims
1. A method for producing a connecting rod having a connecting rod small end bush which is inserted with a press fit in a bore in an eye of the connecting rod, the connecting rod small-end bush having, on the inner radially continuous cylindrical surface of its bush bore, one or more lubricating-oil pockets which extend over the axial length of the connecting rod small-end bush and which open into the radially continuous lubricating-oil bores which overlap with lubricating-oil recesses likewise formed in the eye of the connecting rod, including the following steps which take place in succession, the production of a bush component by means of cold or hot forming, with a bush orifice, the diameter of which is smaller than the nominal size of the bush bore, depressions which form the lubricating-oil pockets being formed in the continuous cylindrical surface of the bush orifice, and a radially outer cylindrical surface with oversize being obtained, the machining of the radially outer cylindrical surface of the bush component to nominal size, the insertion of the bush component with a press fit into the bore of the connecting rod, with the lubricating-oil pockets at the same time being oriented in position according to the lubricating-oil bores of the eye, the production of the bush bore by the machining of the bush orifice to nominal size.
2. formed by form drawing.
3. by inner form drawing.
4. formed by extrusion.
A method according to Claim 1, wherein the bush component is cold- A method according to Claim 2, wherein the bush orifice is cold-formed A method according to Claim 1, wherein the bush component is hot- 7
5. A method according to any one of Claims 2 to 4, wherein form drawing or extrusion takes place by means of a mandrel of the pressing die or a plug of the drawing die, which mandrel or plug has a cross-section which corresponds to the cross section of the bush orifice and from which radial elevations corresponding to the lubricating-oil pocket cross-sections project.
6. A method according to Claim 5, wherein the radial elevations have an asymmetric cross-section.
7. A method according to any one of the preceding claims, wherein a tube is produced by cold or hot forming and a plurality of connecting rod small-end bushes are made by cutting the tube to length.
8. A method according to any one of the preceding claims, wherein a plurality of lubricating-oil pockets, distributed uniformly on the circumference of the inner radially continuous cylindrical surface of the bush bore, are produced.
9. A method according to any one of the preceding claims, wherein the lubricating-oil bores and/or the lubricating-oil recesses are produced after the connecting rod small-end bush has been inserted into the bore of the connecting rod.
10. A method according to any one of Claims 1 to 8, wherein the lubricating-oil bores andlor the lubricating-oil recesses are produced before the connecting rod small-end bush is inserted into the bore of the connecting rod.
111. A method for producing a connecting rod substantially as described herein with reference to and as illustrated in the accompanying drawings.
Amendments to the claims have been filed as follows 1 ' A method for producing a connecting rod having a connecting rod small end bush which is inserted with a press fit in a bore in an eye of the connecting rod, the connecting rod small-end bush having, on the inner radially cylindrical surface of its bush bore, one or more lubricating-oil pockets which extend over the axial length of the connecting rod small-end bush and which open into the radially continuous lubricating-oil bores which overlap with lubricating-oil recesses likewise formed in the eye of the connecting rod, including the following steps which take place in succession, the production of a bush component by means of cold or hot forming, with a bush orifice, the diameter of which is smaller than the nominal size of the bush bore, depressions which are to form the lubricating-oil pockets being formed in the continuous cylindrical surface of the bush orifice, and a radially outer cylindrical surface with oversize being obtained, the machining of the radially outer cylindrical surface of the bush component to nominal size, the insertion of the bush component with a press fit into the bore of the connecting rod, so that the lubricating-oil pockets can be aligned with the lubricating-oil bores of the eye, the production of the bush bore by the machining of the bush orifice to nominal size.
2. formed by form drawing.
3. by inner form drawing.
4. formed by extrusion.
A method according to Claim 1, wherein the bush component is cold- A method according to Claim 2, wherein the bush orifice is cold-formed A method according to Claim 1, wherein the bush component is hot- 5. A method according to any one of Claims 2 to 4, wherein form drawing or extrusion takes place by means of a mandrel of the pressing die or a plug of the drawing die, which mandrel or plug has a cross-section which corresponds to the cross section of the bush orifice and from which radial elevations corresponding to the lubricating-oil pocket cross-sections project.
q 6. asymmetric cross-section.
A method according to Claim 5, wherein the radial elevations have an 7. A method according to any one of the preceding claims, wherein a tube is produced by cold or hot forming and a plurality of connecting rod small-end bushes are made by cutting the tube to length.
8. A method according to any one of the preceding claims, wherein a plurality of lubricating-oil pockets, being uniformly spaced on the circumference of the inner radially cylindrical surface of the bush bore, are produced.
9. A method according to any one of the preceding claims, wherein the lubricating-oil bores and/or the lubricating-oil recesses are produced after the connecting rod small-end bush has been inserted into the bore of the connecting rod.
10. A method according to any one of Claims 1 to 8, wherein the lubnicating-oil bores and/or the lubricating-oil recesses are produced before the connecting rod small-end bush is inserted into the bore of the connecting rod.
11. A method for producing a connecting rod substantially as described herein with reference to and as illustrated in the accompanying drawings.
GB9820954A 1997-10-10 1998-09-25 Method for producing a connecting rod Expired - Fee Related GB2330788B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19744713A DE19744713C1 (en) 1997-10-10 1997-10-10 Method of manufacturing a connecting rod

Publications (3)

Publication Number Publication Date
GB9820954D0 GB9820954D0 (en) 1998-11-18
GB2330788A true GB2330788A (en) 1999-05-05
GB2330788B GB2330788B (en) 1999-09-29

Family

ID=7845108

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9820954A Expired - Fee Related GB2330788B (en) 1997-10-10 1998-09-25 Method for producing a connecting rod

Country Status (4)

Country Link
DE (1) DE19744713C1 (en)
FR (1) FR2769530B1 (en)
GB (1) GB2330788B (en)
IT (1) IT1302361B1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006054142A1 (en) * 2004-11-16 2006-05-26 Mahle Technology, Inc. Connecting rod assembly for an internal combustion engine and method of manufacturing same
WO2006054140A1 (en) * 2004-11-16 2006-05-26 Mahle Technology, Inc. Method of manufacturing a connecting rod assembly for an internal combustion engine
US7217035B2 (en) * 2001-07-05 2007-05-15 Federal-Mogul Wiesbaden Gmbh & Co. Kg Connecting rod-bearing combination for adjusting and reducing oscillating masses of a connecting rod-piston-combination and method for producing a connecting rod-bearing combination of this type
CN102537022A (en) * 2012-03-06 2012-07-04 重庆大学 Engine connecting rod big end bearing structure
US8245687B2 (en) 2010-01-07 2012-08-21 Mahle International Gmbh Profiled connecting rod bore with micro-dimples
US8424445B2 (en) 2009-06-02 2013-04-23 Mahle International Gmbh Connecting rod bore
US8613137B2 (en) 2004-11-16 2013-12-24 Mahle International Gmbh Connecting rod lubrication recess

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10037999A1 (en) * 2000-08-04 2002-02-14 Bayerische Motoren Werke Ag Procedure for location of bearing bush in forged steel connecting rod entails forming opening in connecting rod, which is forge heated to 900 degrees C, by using piercing punch acting in single pass over width of bearing
FR2883940B1 (en) 2005-03-31 2008-10-10 Airbus France Sas HOLLOW STRUCTURAL ROD AND METHOD FOR MANUFACTURING SUCH ROD
ITMI20052487A1 (en) * 2005-12-27 2007-06-28 Iveco Spa PROCESS OF PROCESSING OF THE SMALL EYE OF A ENGINE CONNECTING ROD AND ROD WHICH WAS OBTAINED

Citations (3)

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Publication number Priority date Publication date Assignee Title
GB667791A (en) * 1948-09-03 1952-03-05 Toledo Stamping And Mfg Compan Improvements in or relating to engine rocker arm assemblies
GB711123A (en) * 1952-09-17 1954-06-23 James Milton Leake Method of making engine rocker arm
US4856366A (en) * 1986-05-27 1989-08-15 Vilter Manufacturing Company Connecting rod bearing assembly

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DE2159417C3 (en) * 1971-11-30 1974-08-22 Gleitlager-Gesellschaft Mbh, 3400 Goettingen Process for the production of a sliding part for a multi-sliding surface radial bearing and apparatus for carrying out part of this process
FR2278985A1 (en) * 1974-03-05 1976-02-13 Pitner Alfred CUSHION FOR SMOOTH BEARING
DE2552167A1 (en) * 1975-11-21 1977-05-26 Dornier System Gmbh Shaft bearing shell with axial lubricant pockets - is produced by using a mandrel to partially deform bearing shell
DE2906167C2 (en) * 1979-02-17 1983-05-19 Dornier System Gmbh, 7990 Friedrichshafen Method for manufacturing a multi-surface plain bearing
JPH03125012A (en) * 1989-10-11 1991-05-28 Yamaha Motor Co Ltd Manufacture of connecting rod of engine
US5373637A (en) * 1992-12-15 1994-12-20 Rexnord Corporation Process of producing a bearing having internal lubrication grooves
DE4315392C2 (en) * 1993-05-08 2003-06-18 Mahle Gmbh Method of manufacturing a connecting rod
DE19532953A1 (en) * 1995-09-07 1997-03-13 Dynamit Nobel Ag Manufacturing procedure for pressure rolled pipes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB667791A (en) * 1948-09-03 1952-03-05 Toledo Stamping And Mfg Compan Improvements in or relating to engine rocker arm assemblies
GB711123A (en) * 1952-09-17 1954-06-23 James Milton Leake Method of making engine rocker arm
US4856366A (en) * 1986-05-27 1989-08-15 Vilter Manufacturing Company Connecting rod bearing assembly

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7217035B2 (en) * 2001-07-05 2007-05-15 Federal-Mogul Wiesbaden Gmbh & Co. Kg Connecting rod-bearing combination for adjusting and reducing oscillating masses of a connecting rod-piston-combination and method for producing a connecting rod-bearing combination of this type
WO2006054142A1 (en) * 2004-11-16 2006-05-26 Mahle Technology, Inc. Connecting rod assembly for an internal combustion engine and method of manufacturing same
WO2006054140A1 (en) * 2004-11-16 2006-05-26 Mahle Technology, Inc. Method of manufacturing a connecting rod assembly for an internal combustion engine
US8613137B2 (en) 2004-11-16 2013-12-24 Mahle International Gmbh Connecting rod lubrication recess
US8424445B2 (en) 2009-06-02 2013-04-23 Mahle International Gmbh Connecting rod bore
US8245687B2 (en) 2010-01-07 2012-08-21 Mahle International Gmbh Profiled connecting rod bore with micro-dimples
CN102537022A (en) * 2012-03-06 2012-07-04 重庆大学 Engine connecting rod big end bearing structure

Also Published As

Publication number Publication date
GB2330788B (en) 1999-09-29
FR2769530B1 (en) 2000-11-17
ITRM980632A1 (en) 2000-04-07
FR2769530A1 (en) 1999-04-16
GB9820954D0 (en) 1998-11-18
IT1302361B1 (en) 2000-09-05
DE19744713C1 (en) 1999-05-20

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Legal Events

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732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20020925