WO2007073720A1 - Pleuel für einen verbrennungsmotor und verfahren zu seiner herstellung - Google Patents
Pleuel für einen verbrennungsmotor und verfahren zu seiner herstellung Download PDFInfo
- Publication number
- WO2007073720A1 WO2007073720A1 PCT/DE2006/002258 DE2006002258W WO2007073720A1 WO 2007073720 A1 WO2007073720 A1 WO 2007073720A1 DE 2006002258 W DE2006002258 W DE 2006002258W WO 2007073720 A1 WO2007073720 A1 WO 2007073720A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connecting rod
- coating
- bore
- inner contour
- cylindrical inner
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 5
- 238000000034 method Methods 0.000 title claims description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 64
- 238000000576 coating method Methods 0.000 claims abstract description 49
- 239000002245 particle Substances 0.000 claims abstract description 24
- 239000000314 lubricant Substances 0.000 claims abstract description 21
- 239000007787 solid Substances 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052582 BN Inorganic materials 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 239000000203 mixture Substances 0.000 description 8
- 239000003921 oil Substances 0.000 description 8
- 238000005461 lubrication Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 2
- 239000004962 Polyamide-imide Substances 0.000 description 2
- 239000008199 coating composition Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 229920002312 polyamide-imide Polymers 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- 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
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/1045—Details of supply of the liquid to the bearing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
- B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
- B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/40—Distributing applied liquids or other fluent materials by members moving relatively to surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
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- 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
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/02—Sliding-contact bearings
- F16C23/04—Sliding-contact bearings self-adjusting
- F16C23/041—Sliding-contact bearings self-adjusting with edge relief
-
- 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
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
- F16C33/1065—Grooves on a bearing surface for distributing or collecting the liquid
-
- 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
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/208—Methods of manufacture, e.g. shaping, applying coatings
-
- 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
-
- 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
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
- F16J1/16—Connection to driving members with connecting-rods, i.e. pivotal connections with gudgeon-pin; Gudgeon-pins
-
- 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
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
-
- 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
- F16C2223/00—Surface treatments; Hardening; Coating
- F16C2223/30—Coating surfaces
- F16C2223/42—Coating surfaces by spraying the coating material, e.g. plasma spraying
-
- 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
-
- 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
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
-
- 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
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/201—Composition of the plastic
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49288—Connecting rod making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2142—Pitmans and connecting rods
- Y10T74/2162—Engine type
Definitions
- the present invention relates to a connecting rod for an internal combustion engine with a small connecting rod for receiving a piston pin and a large connecting rod for receiving a crank pin, wherein at least one connecting rod has at least one geometric deviation from a cylindrical inner contour.
- the present invention further relates to a method for producing such a connecting rod.
- the connecting rod connects the piston of an internal combustion engine with the crankshaft.
- the small connecting rod eye absorbs the piston pin, while the large connecting rod eye encloses a crank pin.
- the small and large connecting rod eye are provided with sliding bearing surfaces, for example. In the form of plain bearing layers.
- the sliding bearing surfaces of these components are very heavily stressed mechanically.
- the piston pin may bend during the oscillating movement of the piston due to the enormous forces acting on the piston.
- the connecting rod eyes are heavily loaded. Therefore, ways are sought to relieve the connecting rod eyes. This happens, for example, by local geometric changes in the usually cylindrical connecting rod eye, which reduce the mechanical stress.
- Such geometric changes can be, for example, relief pockets, oval, conical or spherical holes.
- This principle is already known for hub bores, cf.
- Such geometrical changes have hitherto been produced by a complex finishing of the connecting rod eyes.
- connecting rods with sliding bearing surfaces having connecting rods are known.
- the sliding bearing surfaces are with a Self-lubricating coating of a resin coated with embedded solid lubricant particles.
- the object of the present invention is to provide a connecting rod in which at least one connecting rod can be provided in a particularly simple manner with local geometric deviations.
- the solution consists in a connecting rod with the features of claim 1 and in a method with the features of claim 12.
- at least one connecting rod is formed from a bore with a cylindrical inner contour that the bore with a coating comprising a resin It is provided embedded solid lubricant particles and that the coating forms the at least one geometric deviation from the cylindrical inner contour of the at least one connecting rod.
- the method according to the invention is characterized in that a bore having a cylindrical inner contour is first produced and then a coating agent comprising a resin with solid lubricant particles incorporated therein is applied to the inner surface of this bore by means of a coating tool so that the resulting coating exhibits the at least one geometric deviation formed by the cylindrical inner contour of the at least one connecting rod eye.
- connecting rod eyes with at least one geometric deviation from the cylindrical inner contour and with a self-lubricating coating of their inner surfaces in one and the same operation.
- the complex and very complex machining of the metallic inner surfaces of the connecting rod eyes for introducing the at least one geometric deviation is eliminated.
- no bushings or bearings are required more to achieve adequate lubrication and seizure safety of the connecting rod.
- the coating can be done without prior application of an adhesive layer.
- the desired dimensional stability of the connecting rod is achieved reliably.
- the durability and thus the service life of the bearing of piston pin or crank pin significantly improved due to the improved lubricating properties over the previously known coatings of metal alloys.
- the at least one geometric deviation can be embodied as at least one relief pocket and / or ovality (for example as high or transverse ovality) and / or as a shaped bore, as disclosed, for example, in WO 96/07841 A1 for hub bores.
- At least one oil collecting space may be provided in the coating in order to further improve the lubrication of the storage.
- the at least one oil collecting space can be designed as a channel extending in the direction of the longitudinal axis, as a channel which runs completely or partially around the direction of the longitudinal axis and / or as a pocket-shaped recess.
- the minimum thickness of the coating depends on the requirements of the individual case and may, for example, be 5 ⁇ m to 15 ⁇ m.
- the resin contained in the coating is a thermosetting resin, in particular a polyamide-imide resin, which is very temperature-resistant and can withstand the stresses to which the bearing is subjected during operation, particularly well.
- the solid lubricant particles may in particular consist of a material selected from the group of materials comprising graphite, molybdenum sulfide, tungsten disulfide, hexagonal boron nitride and PTFE (polytetrafluoroethylene).
- the solid lubricant particles advantageously consist only of one material. It is particularly advantageous if all solid lubricant particles consist of the same material or solid lubricant particles are mixed, which consist of two different materials, for example.
- Solid lubricant particles made of graphite Solid lubricant particles are mixed from a metal sulfide. For a particularly effective lubrication, the solid lubricant particles have a particle size of 1 .mu.m to 3 .mu.m.
- the at least one geometric deviation can be formed by varying the amount of the coating agent emitted by the coating tool and / or by varying the advance of the coating tool in the bore to be coated.
- a possible alternative is to apply the coating agent in a uniform thickness and to form the at least one geometric deviation by a post-processing of the resulting coating. This is naturally much more complicated than to introduce the at least one geometric deviation directly during the coating process.
- the result namely a connecting rod with connecting rods whose coating forms at least one geometric deviation from the cylindrical inner contour of the connecting rod, but is the same.
- the coating agent is applied to inner surfaces of the bores with a surface roughness of Ra (average roughness) ⁇ 0.8 microns in order to achieve a particularly good adhesion.
- the inner surfaces of the holes before and / or be pre-heated during the application of the coating agent, preferably up to a temperature of 50 0 C to 8O 0 C.
- the coating agent can be applied, for example, by means of rotary atomizing from a rotating nozzle introduced into the bore. It has proven to be particularly practical to perform the rotary atomizing at a rotational speed of the nozzle of 14,000 to 18,000 revolutions per minute.
- a preferred development of the method according to the invention is to use a thermally curable coating composition and the same immediate immediately after application of a heat treatment to undergo, preferably at a temperature of 200 0 C.
- Fig. 1 is a front view of an embodiment of a connecting rod according to the invention
- FIG. 2 shows a section along the line II - II in FIG. 1;
- Fig. 3 is a schematic representation of a coating tool.
- FIGs 1 and 2 show an embodiment of a connecting rod 10 according to the invention.
- the connecting rod 10 is in a conventional manner, for example. Steel.
- the connecting rod 10 has a connecting rod shaft 11, a small connecting rod eye 20 and a large connecting rod eye 30.
- the small connecting rod eye 20 receives the piston pin of a piston (not shown), while the large connecting rod 30 receives a crank pin of a crankshaft (not shown).
- the connecting rod eyes 20, 30 are shaped bores having a defined inner contour 21, 31 deviating from the cylindrical shape, as disclosed, for example, in WO 96/07841 A1 for hub bores.
- This design is used to relieve the mechanical system of piston pin, connecting rod 10 and crank pin during operation to avoid the risk of cracks around the connecting rods 20, 30.
- Other designs of connecting rods, which serve the same purpose, are, for example, with an ovality (highly and / or transversely oval) or with relief pockets provided holes (not shown). These designs are already known for hub bores.
- both connecting rods 20, 30 are configured according to the invention such that they consist of a cylindrical bore 22 or 32 and a coating. tion 23 and 33 are composed.
- the surface contour of the coating 23 or 33 is designed such that the desired inner contour 21 or 31 of the respective connecting-rod eye 20 or 30 deviating from the cylindrical shape results.
- an ovality or a relief pocket can also be formed by the surface contour of the coating 23 or 33 (not shown).
- the coating 23 or 33 consists essentially of a resin with embedded solid lubricant particles and is thus a self-lubricating coating.
- the coating 23 or 33 is further provided with oil collecting spaces in the form of a in the direction of the longitudinal axis L of the respective connecting rod 20 and 30 extending channel 24 and 34, from which pockets 25 and 35 extend radially.
- These oil collecting chambers serve to further improve the lubrication of the respective bearing of the piston pin or crank pin. They can of course be designed for any desired application in any shape and size and arranged arbitrarily to each other.
- the cylindrical bore 22 or 32 is first introduced into the connecting rod shaft 11 and finished mechanically in a known manner.
- the surface roughness Ra (average roughness value) may correspond to that specified in DE 41 11 368 A1, wherein generally for bore diameters smaller than 30 mm the Ra values are 0.63 ⁇ m or less and for bore diameters between 30 and 60 mm Ra values of 0 , 8 ⁇ m or less can be achieved.
- the bore diameter is selected in the embodiment before coating such that the piston pin or the crank pin in the finished connecting rod 20 and 30 receives a diametrical clearance of 10 .mu.m to 40 .mu.m.
- the cylindrical bore 22 or 32 should be cleaned so that chips, other particles, processing oils and the like are completely removed.
- the inner surface of the cylindrical bore 22 and 32 may also be phosphated.
- corresponding covering templates in the cylindrical bore 22 and 32, respectively are coated prior to coating in a manner known per se appropriate.
- the cover templates prevent coating of the covered areas of the cylindrical bore 22 or 32.
- the finished coating 23 or 33 can be post-processed and provided in this way with oil collection spaces.
- the coating agent selected in the exemplary embodiment is formed from a thermosetting resin with solid lubricant particles incorporated therein from one or more of the materials graphite, molybdenum sulfide, tungsten disulfide, hexagonal boron nitride and PTFE.
- the resin is a very temperature-resistant polyamide-imide
- the solid lubricant is a mixture of molybdenum sulfide and graphite particles having a particle size of 1 .mu.m to 3 .mu.m.
- the amount of solid lubricant is chosen in the exemplary embodiment so that the finished coating contains about 50 to 60 wt .-% solid lubricant particles.
- the viscosity of the coating composition is adjusted in such a way that drop formation is avoided when sufficient application is made.
- a device 40 for rotation onszerstäuben For applying the coating 23 or 33 on the inner surfaces of the cylindrical bore 22 and 32 is used in the embodiment, a device 40 for rotation onszerstäuben.
- the device 40 has a main body 41, which is connected to a nozzle body 42.
- the nozzle body 42 is rotatably mounted on the base body by means of a bearing 43.
- the nozzle body 42 is provided with a nozzle 44 having an outlet opening 45.
- the base body 41 has respective feed channels 46, 47 which are intended for the liquid coating material and for compressed air and terminate in a mixing chamber 48 for mixing and metering. From the mixing chamber 48, an outlet channel 49 extends through the nozzle body 42 and opens into the outlet opening 45.
- a baffle plate 51 Perpendicular to the outlet opening 45, a baffle plate 51 is arranged so that between the baffle plate 51 and the nozzle body 42, an annular gap 52 having a width of the embodiment 0.5 mm is formed. Through the gap 52, the coating agent-air mixture in the form of a spray jet 53 exits radially and spaced from the nozzle body 42.
- the nozzle body 42 is set in rotation and rotates in the embodiment in the speed range of 14,000 to 18,000 revolutions per Minute.
- the coating agent / air mixture emerging from the outlet opening 45 is accelerated by the centrifugal forces occurring at the outlet opening 45 in such a way that it emerges radially as a disk-shaped spray jet 53. Since the spray jet 53 is narrow in the direction of the longitudinal axis L, the inner surface of the cylindrical bore 22 or 32 to be coated can be sharply delimited in the direction of the longitudinal axis L by simple supply control of the coating agent / air mixture.
- nozzles 44 are available with a diameter in the range between 5 and 25 mm and with depths up to 50 mm, so that with the device 40 cylindrical bores 22, 32 can be coated for connecting rods of all engine types.
- the diameter of the nozzle 44 is usually selected so that it corresponds approximately to half the diameter of the cylindrical bore 22 and 32 respectively
- a spin apparatus S-520 from Sprimag, Kirchheim is also suitable.
- the application of the coating agent-air mixture takes place in the exemplary embodiment on the preheated to 50 0 C to 80 0 C inner surface of the cylindrical bore 22 and 32.
- the nozzle 44 is moved centrally from outside to inside in the cylindrical bore 22 and 32 respectively.
- the geometric inner contour of the cylindrical contour deviation for example.
- the form of holes shown in Figure 2 the feed of the nozzle 44, for example. In a range of 10 to 20 mm / s varies
- the amount of out of the outlet opening 45 the nozzle 44 exiting coating agent-air mixture can be varied.
- the device 40 operates computer-controlled. When the nozzle 44 has reached the end of the cylindrical bore 22 or 32, the device 40 is turned off and retracted.
- covering templates for producing oil collecting spaces are provided in the cylindrical bore 22 or 32, the supply of the coating agent / air mixture is shut off upon reaching such a template, so that remnants of the spray jet are sprayed onto the covering template.
- the end of Cover template is reached, the supply of the coating agent-air mixture is reached again.
- the coating agent When the coating agent is applied, it is thermally cured by the connecting rod or the connecting rod 20 and 30 having the connecting rod component spent in an oven and is maintained in the embodiment for 10 to 20 minutes at a temperature of 200 0 C.
- the finished coating 23 or 33 is in the embodiment at its thinnest point about 5 microns to 20 microns thick and the diametrical clearance of the piston pin or crank pin is about 10 microns to 20 microns. This close game is particularly advantageous to avoid noise.
- the coating 23 or 33 also ensures that no eaters occur despite the tight game.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008546117A JP5260306B2 (ja) | 2005-12-21 | 2006-12-15 | 内燃機関のためのコンロッドおよびこれを製造する方法 |
US12/086,738 US20090078080A1 (en) | 2005-12-21 | 2006-12-15 | Connecting Rod for an Internal Combustion Engine and Method for Its Production |
EP06828689A EP1963692A1 (de) | 2005-12-21 | 2006-12-15 | Pleuel für einen verbrennungsmotor und verfahren zu seiner herstellung |
BRPI0620382-5A BRPI0620382A2 (pt) | 2005-12-21 | 2006-12-15 | biela para um motor de combustão interna e processo para a sua produção |
US14/250,463 US9726223B2 (en) | 2005-12-21 | 2014-04-11 | Method for the production of a connecting rod for an internal combustion engine |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005061062.5 | 2005-12-21 | ||
DE102005061062 | 2005-12-21 | ||
DE102006013399.4 | 2006-03-23 | ||
DE102006013399A DE102006013399A1 (de) | 2005-12-21 | 2006-03-23 | Pleuel für einen Verbrennungsmotor und Verfahren zu seiner Herstellung |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/086,738 A-371-Of-International US20090078080A1 (en) | 2005-12-21 | 2006-12-15 | Connecting Rod for an Internal Combustion Engine and Method for Its Production |
US14/250,463 Division US9726223B2 (en) | 2005-12-21 | 2014-04-11 | Method for the production of a connecting rod for an internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007073720A1 true WO2007073720A1 (de) | 2007-07-05 |
Family
ID=37888202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2006/002258 WO2007073720A1 (de) | 2005-12-21 | 2006-12-15 | Pleuel für einen verbrennungsmotor und verfahren zu seiner herstellung |
Country Status (6)
Country | Link |
---|---|
US (2) | US20090078080A1 (de) |
EP (1) | EP1963692A1 (de) |
JP (1) | JP5260306B2 (de) |
BR (1) | BRPI0620382A2 (de) |
DE (1) | DE102006013399A1 (de) |
WO (1) | WO2007073720A1 (de) |
Cited By (3)
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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 |
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DE102005061063A1 (de) * | 2005-12-21 | 2007-06-28 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung |
EP1900473A1 (de) * | 2006-09-15 | 2008-03-19 | ThyssenKrupp Automotive AG | Verfahren zur Herstellung eines Pleuels |
EP2408588B1 (de) * | 2009-03-16 | 2013-01-16 | Alfing Kessler Sondermaschinen GmbH | Verfahren zum fügen zweier komponenten eines bauteils |
GB201002309D0 (en) | 2010-02-11 | 2010-03-31 | Mahle Int Gmbh | Bearing |
US9599148B2 (en) | 2011-10-17 | 2017-03-21 | Mahle International Gmbh | Thermal spray coating for connecting rod small end |
US8893580B2 (en) * | 2011-10-17 | 2014-11-25 | Mahle International Gmbh | Thermal spray coating for connecting rod small end |
FR2983867B1 (fr) * | 2011-12-09 | 2014-08-22 | Total Raffinage Marketing | Lubrifiant moteur pour vehicules a motorisation hybride ou micro-hybride |
JP5910438B2 (ja) * | 2012-09-28 | 2016-04-27 | 大豊工業株式会社 | 半割りスラスト軸受 |
US9291192B2 (en) * | 2013-06-17 | 2016-03-22 | Mahle International Gmbh | Connecting rod with bearing-less large end |
US9714677B2 (en) * | 2014-01-24 | 2017-07-25 | Ford Global Technologies, Llc | Coated connecting rod and method of making the same |
EP2998594A1 (de) * | 2014-09-19 | 2016-03-23 | ThyssenKrupp Metalúrgica Campo Limpo Ltda. | Pleuelstange |
JP2016070297A (ja) * | 2014-09-26 | 2016-05-09 | 本田技研工業株式会社 | 内燃機関のコネクティングロッド |
JP5916829B1 (ja) * | 2014-10-28 | 2016-05-11 | ヤマハ発動機株式会社 | コンロッド、内燃機関、自動車両およびコンロッドの製造方法 |
JP6090303B2 (ja) * | 2014-12-24 | 2017-03-08 | マツダ株式会社 | エンジン |
DE102015202631B4 (de) * | 2015-02-13 | 2018-02-15 | Schaeffler Technologies AG & Co. KG | Lager und Verfahren |
JP6314103B2 (ja) | 2015-02-27 | 2018-04-18 | 大豊工業株式会社 | すべり軸受 |
US9835200B2 (en) * | 2015-04-15 | 2017-12-05 | Siemens Energy, Inc. | Generator bearing assembly and a method for lubricating a generator bearing assembly |
EP3093514A1 (de) * | 2015-05-12 | 2016-11-16 | Siemens Aktiengesellschaft | Radialgleitlager mit versetzten schmiertaschen |
DE102015217111A1 (de) * | 2015-09-08 | 2017-03-09 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Lagern eines ersten Bauteils an einem zweiten Bauteil eines Kraftfahrzeugs |
EP3587844A1 (de) | 2018-06-21 | 2020-01-01 | ThyssenKrupp Metalúrgica Campo Limpo Ltda. | Pleuel |
WO2022269122A1 (en) * | 2021-06-24 | 2022-12-29 | Wärtsilä Finland Oy | Bearing element, lubrication arrangement and piston engine |
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- 2006-12-15 US US12/086,738 patent/US20090078080A1/en not_active Abandoned
- 2006-12-15 JP JP2008546117A patent/JP5260306B2/ja not_active Expired - Fee Related
- 2006-12-15 EP EP06828689A patent/EP1963692A1/de not_active Withdrawn
- 2006-12-15 WO PCT/DE2006/002258 patent/WO2007073720A1/de active Application Filing
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US8245687B2 (en) | 2010-01-07 | 2012-08-21 | Mahle International Gmbh | Profiled connecting rod bore with micro-dimples |
Also Published As
Publication number | Publication date |
---|---|
US9726223B2 (en) | 2017-08-08 |
BRPI0620382A2 (pt) | 2011-11-08 |
JP5260306B2 (ja) | 2013-08-14 |
US20090078080A1 (en) | 2009-03-26 |
DE102006013399A1 (de) | 2007-07-05 |
EP1963692A1 (de) | 2008-09-03 |
US20140242277A1 (en) | 2014-08-28 |
JP2009520926A (ja) | 2009-05-28 |
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