DE102004024576A1 - Connecting rod for an I.C. engine comprises connecting rod eyes having a cross-section which deviates from a circular or cylindrical shape - Google Patents
Connecting rod for an I.C. engine comprises connecting rod eyes having a cross-section which deviates from a circular or cylindrical shape Download PDFInfo
- Publication number
- DE102004024576A1 DE102004024576A1 DE102004024576A DE102004024576A DE102004024576A1 DE 102004024576 A1 DE102004024576 A1 DE 102004024576A1 DE 102004024576 A DE102004024576 A DE 102004024576A DE 102004024576 A DE102004024576 A DE 102004024576A DE 102004024576 A1 DE102004024576 A1 DE 102004024576A1
- Authority
- DE
- Germany
- Prior art keywords
- connecting rod
- eye
- cross
- section
- percent
- 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.)
- Withdrawn
Links
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
- 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
- F16C9/045—Connecting-rod bearings; Attachments thereof the bearing cap of the connecting rod being split by fracturing
-
- 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)
Abstract
Description
Die
Erfindung betrifft ein Pleuel für
eine Brennkraftmaschine ein gemäß dem Oberbegriff
des Anspruchs 1, wie es bspw. aus der gattungsbildend zugrunde gelegten
Aus
der
Die Aufgabe der Erfindung ist es, Pleuel zu entwickeln, bei denen zumindest einige der oben genannten Kritikpunkte verbessert sind. Ferner ist es Aufgabe der Erfindung geeignete Herstellungsverfahren für derartige Pleuel zu entwickeln.The The object of the invention is to develop connecting rods, in which at least some of the above criticisms are improved. Further is It is an object of the invention to provide suitable production processes for such To develop connecting rods.
Die Aufgabe wird mit einem Pleuel mit den Merkmalen des Anspruchs 1 bzw. mit Verfahren mit den Verfahrensschritten des Anspruchs 12 bzw. 15 gelöst. Durch die Schaffung zusätzlicher Kraftunterstützungsflächen an dem Pleuel werden die Anbindungen des Pleuels an das innenseitige im jeweiligen Pleuelauge befindliche Bauteil verbessert. So bilden z.B. entsprechend bearbeitete und im Ruhezustand von der Kreisform abweichende Seitenflächen des großen Pleuelauges individuell definierte Krafteinleitungsflächen für die Kurbelwelle. Gewünschte Querschnitte, wie insbesondere elliptische bzw. parabelförmige, prismatische und/oder konkave und/oder parabolisch und/oder hyperbolisch, können durch die sowohl im Wert und ihrer Richtung gezielte Einbringung von definierte Spannkräften, vorzugsweise während der Endbearbeitung auf eine Kreisform gewollten Durchmessers, hergestellt werden. Zusätzlich zu dieser Formgebung kann ein Pleuelauge über seine Länge (Dicke) betrachtet eine sphärische Krümmung aufweisen und/oder tonnenförmig geformt sein; d.h. der lichte Weite des Pleuelauges ist ortabhängig und veränderlich. Nach abgeschlossener Bearbeitung werden die Spannkräfte gelöst und der gewünschte Querschnitt, der nunmehr von einer reinen Kreisform abweicht, stellt sich im entspannten Zustand ein.The Task is with a connecting rod having the features of claim 1 or with methods having the method steps of claim 12 or 15 solved. By creating additional Force support surfaces on the connecting rod are the connections of the connecting rod to the inside improved component located in the respective connecting rod eye. Thus, e.g. accordingly processed and deviated from the circular shape in the resting state faces of the big one Connecting rod eye Individually defined force introduction surfaces for the crankshaft. desired Cross sections, such as in particular elliptical or parabolic, prismatic and / or concave and / or parabolic and / or hyperbolic, can by the well-defined introduction of defined in value and its direction Clamping forces, preferably during the finishing on a circular shape of desired diameter, manufactured become. additionally For this shaping, a connecting rod eye can be considered over its length (thickness) have spherical curvature and / or barrel-shaped be shaped; i.e. the clear width of the connecting rod eye is location-dependent and mutable. After completion of the machining, the clamping forces are released and the desired Cross-section, which now differs from a pure circular shape presents in the relaxed state.
Aus dieser Art der Querschnittsgebung ergibt sich im Betrieb, also unter Belastung des Pleuels, ein geringerer Verschleiß der Lagerschalen und/oder von bspw. gespritzten Laufflächenbeschichtungen. Diese Verringerung beruht vermutlich darauf, dass sich der Querschnitt im Betrieb der Kreisform zumindest annähert. Insbesondere wird hierdurch die Wahrscheinlichkeit eines Durchschlagens des Ölfilms bei dynamischen Spalten verringert. Diese Spaltverringerung vermindert auch die Wahrscheinlichkeit eines Fressen. Ferner wird bei der beanspruchten Erfindung auch noch ein zusätzliches Ölvolumen geschaffen, welches wie ein Polster gegenüber Spitzenbrenndrücken des Kolbens wirkt. Dadurch wiederum können die Bauteile kleiner dimensioniert und/oder preisgünstigere Lagerwerkstoffe verwendet werden.Out this type of cross-section results in the operation, so under Load of the connecting rod, a lower wear of the bearing shells and / or for example, sprayed tread coatings. This reduction is probably due to the fact that the cross-section during operation at least approximates the circular shape. In particular, this is thereby the probability of oil film breakdown in dynamic columns reduced. This gap reduction also reduces the probability a feeding. Further, in the claimed invention as well another extra volume of oil created as a cushion against top burning pressures of the Piston acts. In turn, the components can be made smaller and / or cheaper Bearing materials are used.
Sinnvolle Ausgestaltungen der Erfindung können den jeweiligen Unteransprüchen entnommen werden. Im übrigen wird die Erfindung anhand eines in der einzigen Zeichnung dargestellten Ausführungsbeispieles näher erläutert. Dabei zeigtmeaningful Embodiments of the invention can the respective subclaims be removed. Furthermore the invention will be described with reference to a single drawing embodiment explained in more detail. there shows
In
In
Das
in
Zur
Herstellung des Pleuels nach
Auf
beiden Öffnungen
wird, ggf. nach einer gewissen Aufarbeitung des vorzugsweise aus
Stahl und/oder einer Leichtmetall-Legierung, insbesondere einer Aluminium-
und/oder Magnesium-Legierung, geschmiedeten
Halbzeugs, noch Material aufgetragen. Dieses Material bildet zumindest
beim großen Pleuelauge
Damit der Auftrag bzw. das Einbringen der Buchse und der Lagerschalen in sinnvoller Weise erfolgen kann, weisen beide Öffnungen gegenüber dem Endmaß ein Übermaß des jeweiligen Durchmessers auf. Nach dem Auftrag des Materials entsprechend ein Untermaß, damit noch eine genaue Bearbeitung auf Endmaß vorgenommen werden kann.In order to the order or the introduction of the bushing and the bearing shells can be done in a meaningful way, both openings have over the Final measure an excess of the respective Diameter up. After the order of the material accordingly undersize so that a precise processing can be made to final dimensions.
Zur
Herstellung des Halbzeugs für
das Pleuel
Bei
den Cu-Legierungen ist es zweckmäßig, die
Lagerschicht
Der Auftrag der Lagerschicht erfolgt vorzugsweise mittels eines thermischen Spritzverfahren, insbesondere mit einem Plasma- oder einem Lichtbogendrahtspritzverfahren.Of the Order of the bearing layer is preferably carried out by means of a thermal Injection method, in particular with a plasma or an arc wire spraying method.
Wie
in
Zur
Herstellung des von der Kreisform abweichenden Querschnitts wird
das Pleuel
Die
Presskräfte
werden so eingestellt, dass hinsichtlich des Betrags und ihrer Wirkrichtung
betrachtet, der im späteren
Betrieb des Pleuels
In
dem gedrückten
Zustand wird das große Pleuelauge
Anstelle
von Druck kann an dem Pleuel
Dabei werden die Zugkräfte so eingestellt, dass sie, vom Betrag und in Richtung betrachtet, der im späteren Betrieb des Pleuels auftretenden an dieser Stelle nach außen gerichteten Kraft im Bereich von 20 Prozent, bevorzugt 10 Prozent und besonders bevorzugt von 5 Prozent entsprechen.The tensile forces are adjusted that, viewed from the amount and in the direction, they correspond to the outward force occurring in the later operation of the connecting rod in the range of 20 percent, preferably 10 percent and particularly preferably 5 percent.
In
dem nach außen
gezogenen Zustand wird das große
Pleuelauge
Ist
die Endbearbeitung erfolgt, wird die zugbeaufschlagende Vorrichtung
(nicht dargestellt) entfernt und das Material des großen Pleuelauges
Wird
die Lagerschicht
Durch
die unterschiedliche Geometrie und unterschiedliche Werkstoffe der
Crackvorrichtung in Keilringkonus kann eine besondere Form und Oberflächengeometrie
der Fertigbearbeitungskontur
Des
weiteren kann durch die Paarung der erfinderischen Lauffläche
Ferner kann ein Pleuelauge über seine Länge (Dicke betrachtet eine sphärische Krümmung aufweisen und/oder tonnenförmig geformt sein.Further can be a connecting rod over his length (Thickness considers a spherical one curvature and / or barrel-shaped be shaped.
Obwohl die Erfindung in der Hauptsache anhand des großen Pleuelauges beschrieben ist, beschränkt sich die vorliegende Erfindung nicht darauf, sondern kann vielmehr ohne weiteres auch auf das kleine Pleuelauge übertragen werden.Even though the invention described in the main with reference to the large connecting rod eye is limited the present invention does not care, but rather may readily be transferred to the small connecting rod eye.
Claims (23)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004024576A DE102004024576A1 (en) | 2004-05-18 | 2004-05-18 | Connecting rod for an I.C. engine comprises connecting rod eyes having a cross-section which deviates from a circular or cylindrical shape |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004024576A DE102004024576A1 (en) | 2004-05-18 | 2004-05-18 | Connecting rod for an I.C. engine comprises connecting rod eyes having a cross-section which deviates from a circular or cylindrical shape |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004024576A1 true DE102004024576A1 (en) | 2005-12-15 |
Family
ID=35404248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004024576A Withdrawn DE102004024576A1 (en) | 2004-05-18 | 2004-05-18 | Connecting rod for an I.C. engine comprises connecting rod eyes having a cross-section which deviates from a circular or cylindrical shape |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102004024576A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8245687B2 (en) | 2010-01-07 | 2012-08-21 | Mahle International Gmbh | Profiled connecting rod bore with micro-dimples |
US8371263B2 (en) | 2009-03-31 | 2013-02-12 | Dresser, Inc. | Connecting rod |
DE102011113011A1 (en) * | 2011-09-09 | 2013-03-14 | Daimler Ag | Connecting rod useful for an internal combustion engine, comprises connecting rod eye, which is divided into separation plane with formation of a connecting rod bearing cap and is arranged on or in connecting rod foot |
US8424445B2 (en) | 2009-06-02 | 2013-04-23 | Mahle International Gmbh | Connecting rod bore |
WO2013059291A1 (en) * | 2011-10-17 | 2013-04-25 | Mahle International Gmbh | Thermal spray coating for connecting rod small end |
US8613137B2 (en) | 2004-11-16 | 2013-12-24 | Mahle International Gmbh | Connecting rod lubrication recess |
CN103612071A (en) * | 2013-11-20 | 2014-03-05 | 江苏荣腾精密组件科技股份有限公司 | Crank arm processing method |
US9599148B2 (en) | 2011-10-17 | 2017-03-21 | Mahle International Gmbh | Thermal spray coating for connecting rod small end |
DE102016217964A1 (en) | 2016-09-20 | 2018-03-22 | Schaeffler Technologies AG & Co. KG | Connecting rod for a piston engine |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4668107A (en) * | 1985-08-14 | 1987-05-26 | Automotive Engine Associates | Engine bearings |
JPS63101511A (en) * | 1986-10-16 | 1988-05-06 | Honda Motor Co Ltd | Bearing structure for connecting rod |
JPH03125012A (en) * | 1989-10-11 | 1991-05-28 | Yamaha Motor Co Ltd | Manufacture of connecting rod of engine |
DE4303592A1 (en) * | 1993-02-08 | 1994-08-11 | Krebsoege Gmbh Sintermetall | Method for producing a component with at least one split bearing seat |
DE10064981C1 (en) * | 2000-12-23 | 2002-07-11 | Federal Mogul Wiesbaden Gmbh | Process for the production of a connecting rod with bushing and bearing shells |
US20040025626A1 (en) * | 2002-08-12 | 2004-02-12 | Burns Andrew S. | Connecting rod with ellipitical opening and method for production |
DE10247130A1 (en) * | 2002-10-09 | 2004-04-22 | Maschinenfabrik Gehring Gmbh & Co | Method of producing a connecting rod especially for a combustion engine involves a first and second honing operation |
-
2004
- 2004-05-18 DE DE102004024576A patent/DE102004024576A1/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4668107A (en) * | 1985-08-14 | 1987-05-26 | Automotive Engine Associates | Engine bearings |
JPS63101511A (en) * | 1986-10-16 | 1988-05-06 | Honda Motor Co Ltd | Bearing structure for connecting rod |
JPH03125012A (en) * | 1989-10-11 | 1991-05-28 | Yamaha Motor Co Ltd | Manufacture of connecting rod of engine |
DE4303592A1 (en) * | 1993-02-08 | 1994-08-11 | Krebsoege Gmbh Sintermetall | Method for producing a component with at least one split bearing seat |
DE10064981C1 (en) * | 2000-12-23 | 2002-07-11 | Federal Mogul Wiesbaden Gmbh | Process for the production of a connecting rod with bushing and bearing shells |
US20040025626A1 (en) * | 2002-08-12 | 2004-02-12 | Burns Andrew S. | Connecting rod with ellipitical opening and method for production |
DE10247130A1 (en) * | 2002-10-09 | 2004-04-22 | Maschinenfabrik Gehring Gmbh & Co | Method of producing a connecting rod especially for a combustion engine involves a first and second honing operation |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8613137B2 (en) | 2004-11-16 | 2013-12-24 | Mahle International Gmbh | Connecting rod lubrication recess |
US8371263B2 (en) | 2009-03-31 | 2013-02-12 | Dresser, Inc. | Connecting rod |
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 |
DE102011113011A1 (en) * | 2011-09-09 | 2013-03-14 | Daimler Ag | Connecting rod useful for an internal combustion engine, comprises connecting rod eye, which is divided into separation plane with formation of a connecting rod bearing cap and is arranged on or in connecting rod foot |
WO2013059291A1 (en) * | 2011-10-17 | 2013-04-25 | 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 |
US9599148B2 (en) | 2011-10-17 | 2017-03-21 | Mahle International Gmbh | Thermal spray coating for connecting rod small end |
CN103612071A (en) * | 2013-11-20 | 2014-03-05 | 江苏荣腾精密组件科技股份有限公司 | Crank arm processing method |
CN103612071B (en) * | 2013-11-20 | 2016-04-20 | 江苏荣腾精密组件科技股份有限公司 | One is cranked arm processing method |
DE102016217964A1 (en) | 2016-09-20 | 2018-03-22 | Schaeffler Technologies AG & Co. KG | Connecting rod for a piston engine |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8130 | Withdrawal | ||
8165 | Unexamined publication of following application revoked |