DE10260488A1 - Production of a crankshaft bearing composite for an internal combustion engine involves producing open-pored insertion parts or pressed bodies made from fiber-reinforced ceramic by squeeze casting and infiltrating with a molten metal - Google Patents
Production of a crankshaft bearing composite for an internal combustion engine involves producing open-pored insertion parts or pressed bodies made from fiber-reinforced ceramic by squeeze casting and infiltrating with a molten metal Download PDFInfo
- Publication number
- DE10260488A1 DE10260488A1 DE10260488A DE10260488A DE10260488A1 DE 10260488 A1 DE10260488 A1 DE 10260488A1 DE 10260488 A DE10260488 A DE 10260488A DE 10260488 A DE10260488 A DE 10260488A DE 10260488 A1 DE10260488 A1 DE 10260488A1
- Authority
- DE
- Germany
- Prior art keywords
- crankshaft
- bearing
- preform
- bodies
- insert
- 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.)
- Ceased
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
- 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
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/14—Casting in, on, or around objects which form part of the product the objects being filamentary or particulate in form
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0043—Arrangements of mechanical drive elements
- F02F7/0053—Crankshaft bearings fitted in the crankcase
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- 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
- F16C33/043—Sliding surface consisting mainly of ceramics, cermets or hard carbon, e.g. diamond like carbon [DLC]
-
- 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
- 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
- F16C2220/00—Shaping
- F16C2220/02—Shaping by casting
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Combustion & Propulsion (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines Kurbelwellenlagerverbunds für eine Brennkraftmaschine gemäß den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to a method for producing a crankshaft bearing assembly for an internal combustion engine according to the characteristics the preamble of claim 1.
Aus der
Es ist daher Aufgabe der vorliegenden Erfindung, das Verfahren zur Herstellung eines Kurbelwellenlagerverbunds für eine Brennkraftmaschine mit im Kurbelwellenlagerbereich mit einer Metallschmelze infiltrierten offenporigen Keramik- bzw. Keramikverbundkörper zu verbessern.It is therefore the task of the present Invention, the method for producing a crankshaft bearing assembly for one Internal combustion engine with a metal melt in the crankshaft bearing area infiltrated open-pore ceramic or ceramic composite bodies improve.
Die Aufgabe wird durch die im Anspruch 1 angegebenen Merkmale gelöst. Durch das separate Vorinfiltrieren des Formkörpers können trotz unterschiedlich komplexer Formteil-Einlegestrukturen optimale Füll- und Gießbedingungen geschaffen werden, die eine optimale Infiltration des (Pre-) Formkörpers mit der Metallschmelze gewährleisten. Durch die Trennung der Verfahrensschritte „Herstellung des Kurbelgehäuses" und „Vorinfiltrieren der Einlegeteile" kann letzt genannter Verfahrensschritt im Druckgussverfahren, vorzugsweise im Squeeze Casting Verfahren durchgeführt werden.The task is set out in the claim 1 specified features solved. Due to the separate pre-infiltration of the molded body can be different complex molded insert structures optimal filling and casting conditions be created with an optimal infiltration of the (pre-) shaped body ensure the molten metal. By separating the process steps "Manufacture of the crankcase" and "Pre-infiltration the inserts " last-mentioned process step in the die casting process, preferably in the squeeze casting process.
Durch die in den Unteransprüchen angegeben Maßnahmen sind vorteilhafte Weiterbildungen und Ausgestaltungen des Verfahrens möglich.By the specified in the subclaims activities are advantageous developments and refinements of the method possible.
Der mit einer Metallschmelze zu infiltrierende sog. Preformkörper (späteres Einlegeteil für den Lagerstuhl) wird so in der Gussform aufgenommen, dass er nach dem Infiltrieren bis auf seine Auflagepunkte in der Gussform vorzugsweise vollständig von einer Schicht der erstarrten Metallschmelze umschlossen ist. Bei der späteren Herstellung des Kurbelgehäuses, bei dem die vorinfiltrierten Preformkörper in die Gussform für das Kurbelgehäuse eingelegt sind, wird diese, den eigentlichen Preformkörper umgebende Metallschicht durch die Metallschmelze für den Kurbelwellenlagerverbund angeschmolzen und somit ein solider Formschluss zwischen dem Umgussteil und den Preformkörpern erreicht. Um den Wärmekontakt zwischen Preformkörper und Schmelze zu verbessern, wird vorgeschlagen, die den Preformkörper umschliessende Metallschicht vorab aufzurauhen; dies kann z. B. durch sog. Drahtkornstrahlen erfolgen.The so-called infiltrated with a molten metal. preform body (later Insert for the storage chair) is accommodated in the mold so that it follows preferably infiltrating down to its support points in the mold Completely is enclosed by a layer of the solidified metal melt. In the later Manufacture of the crankcase, in which the pre-infiltrated preform bodies are inserted into the mold for the crankcase, becomes this metal layer surrounding the actual preform body through the molten metal for the Melted crankshaft bearing assembly and thus a solid form fit reached between the cast part and the preform bodies. To the thermal contact between preform body and to improve the melt, it is proposed to enclose the preform body Roughen the metal layer beforehand; this can e.g. B. by so-called. Wire grain blasting respectively.
Es ist weiterhin vorgesehen, beim Freistellen der Lagerbohrungen für die Aufnahme der Kurbelwelle im Kurbelgehäuse eine Leichtmetall- bzw. Leichtmetalllegierungsschicht zu belassen, die unter Zwischenlage von Lagerschalen für die Aufnahme der Kurbelwellenzapfen vorgesehen ist. Im Betrieb der Brennkraftmaschine dehnt sich diese Leichtmetallschicht stärker aus als der Kurbelwellenzapfen, so dass das Lagerspiel zwischen Kurbelwelle und Kurbelwellenlagerung auf vorteilhafte Weise verringert werden kann.It is also planned to Clearing the bearing holes for the inclusion of the crankshaft in the crankcase a light metal or light metal alloy layer to leave the interleaved bearing cups for receiving the Crankshaft journal is provided. In operation of the internal combustion engine this light metal layer expands more than the crankshaft journal, so that the bearing play between crankshaft and crankshaft bearing can advantageously be reduced.
Es ist weiterhin Aufgabe der Erfindung, eine Geometrie für das aus einer vorzugsweise faserverstärkten Keramik bestehende Einlegeteil (Preformkörper) für den Kurbelwellenlagerverbund einer Brennkraftmaschine zu schaffen, die eine vollständige Vorinfiltrierung mit der Leichtmetallschmelze sicherstellt, ohne dass der eigentliche Preformkörper beim Infiltrierungsprozess beschädigt wird. Darüber hinaus soll die Geometrie des Formeinlegeteils so geschaffen sein, dass ein sicherer und dauerhaltbarer Verbund im Kurbelgehäuse der Brennkraftmaschine gewährleistet ist.It is a further object of the invention a geometry for the insert consisting of a preferably fiber-reinforced ceramic (Preform body) for the To create a crankshaft bearing assembly of an internal combustion engine that a complete Pre-infiltration with the light metal melt ensures without that the actual preform body at Infiltration process damaged becomes. Furthermore the geometry of the molded insert should be created so that a safe and durable bond in the crankcase Internal combustion engine guaranteed is.
Diese Aufgabe wird durch die im Ansprüch 5 aufgeführten Merkmale erreicht. Vorteilhafte Weiterbildungen der Einlegeteile sind in den vom Anspruch 5 abhängigen Unteransprüchen beschrieben.This object is achieved by the features listed in claim 5 reached. Advantageous developments of the inserts are in the dependent on claim 5 dependent claims described.
Die Erfindung wird nachfolgend anhand von zwei Ausführungsbeispielen mit Bezug auf die Zeichnung näher erläutert.The invention is described below of two embodiments with reference to the drawing explained.
Es zeigen:Show it:
Die in diesem Ausführungsbeispiel
dargestellte Kurbelwellenlagerung für einen Boxermotor besteht
ohne Beschränkung
auf diese Ausführungsform
aus zwei miteinander verbundenen Lagerbrückenhälften
Die Einlegeteile
Im folgenden wird das Verfahren zur
Herstellung des mit den Einlegeteilen
1. Herstellung von Einlegeteilen1. Manufacturing of inserts
Die Einlegeteile
2. Aufnahme der Preformkörper in eine Gussform und Infiltrieren der Preformkörper mit einer Metallschmelze2. Recording the preform body into a mold and infiltrate the preform body with a molten metal
Der in
3. Herstellung eines Gussformteils, das als Kurbelwellenlagerverbund zur Aufnahme der Kurbelwelle vorgesehen ist3. Production of a molded part, provided as a crankshaft bearing assembly for receiving the crankshaft is
Die einzelnen vorinfiltrierten Preformkörper
4. Endbearbeitung des Gussformteils4. Finishing of the molded part
Nach dem Erstarren der Metallschmelze werden
in das Gussformteil die zur Aufnahme der Wellenzapfen der Kurbelwelle
erforderlichen Lagerbohrungen
Mit dem nach diesem Verfahren hergestellten Kurbelwellenlagerverbund, bei dem vorinfiltrierte Preformkörper aus einer offenporigen Keramik oder einem faserverstärkten Keramikverbund verwendet werden, können beim Betrieb der Brennkraftmaschine die Hauptlagerverformungen unter Betriebslast gegenüber einem Motor aus einer Leichtmetalllegierung ohne Einlegeteile um ca. 20 bis 30% verbessert werden. Neben einer sehr gleichmäßigen Verformung um den Lagerumfang liegen die Lagerspielvergrößerungen fast auf dem Niveau eines Aluminiummotors mit Grauguss-Einlegeteilen, wobei demgegenüber erhebliche Gewichtsvorteile geltend gemacht werden können.With the manufactured by this method Compound of crankshaft bearings in which pre-infiltrated preform bodies are made of an open-pore ceramic or a fiber-reinforced ceramic composite can be used, can the main bearing deformations when operating the internal combustion engine Operating load versus a motor made of a light metal alloy without insert parts approx. 20 to 30% can be improved. In addition to a very even deformation around the camp size, the camp clearance increases are almost on the level of an aluminum motor with cast iron inserts, whereas considerable Weight advantages can be claimed.
In
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10260488A DE10260488A1 (en) | 2002-12-21 | 2002-12-21 | Production of a crankshaft bearing composite for an internal combustion engine involves producing open-pored insertion parts or pressed bodies made from fiber-reinforced ceramic by squeeze casting and infiltrating with a molten metal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10260488A DE10260488A1 (en) | 2002-12-21 | 2002-12-21 | Production of a crankshaft bearing composite for an internal combustion engine involves producing open-pored insertion parts or pressed bodies made from fiber-reinforced ceramic by squeeze casting and infiltrating with a molten metal |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10260488A1 true DE10260488A1 (en) | 2004-07-01 |
Family
ID=32404162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10260488A Ceased DE10260488A1 (en) | 2002-12-21 | 2002-12-21 | Production of a crankshaft bearing composite for an internal combustion engine involves producing open-pored insertion parts or pressed bodies made from fiber-reinforced ceramic by squeeze casting and infiltrating with a molten metal |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10260488A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1637724A1 (en) * | 2004-09-20 | 2006-03-22 | C.R.F. Società Consortile per Azioni | Casing for an internal combustion engine, particularly for motor-vehicles |
DE102011013775A1 (en) | 2011-03-12 | 2011-11-03 | Daimler Ag | Method for manufacturing motor vehicle body component from glass-reinforced plastic material, involves deforming insert of fiber composite material, and separating positioning member from base body of insert at reference break section |
US8813933B2 (en) | 2010-09-15 | 2014-08-26 | Gm Global Technology Operations, Llc | Cast-in spline sleeve for clutch hub |
DE102011112472B4 (en) * | 2010-09-15 | 2015-07-30 | GM Global Technology Operations, LLC (n.d. Ges. d. Staates Delaware) | Composite clutch hub or two-component clutch hub |
-
2002
- 2002-12-21 DE DE10260488A patent/DE10260488A1/en not_active Ceased
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1637724A1 (en) * | 2004-09-20 | 2006-03-22 | C.R.F. Società Consortile per Azioni | Casing for an internal combustion engine, particularly for motor-vehicles |
US8813933B2 (en) | 2010-09-15 | 2014-08-26 | Gm Global Technology Operations, Llc | Cast-in spline sleeve for clutch hub |
DE102011112472B4 (en) * | 2010-09-15 | 2015-07-30 | GM Global Technology Operations, LLC (n.d. Ges. d. Staates Delaware) | Composite clutch hub or two-component clutch hub |
DE102011013775A1 (en) | 2011-03-12 | 2011-11-03 | Daimler Ag | Method for manufacturing motor vehicle body component from glass-reinforced plastic material, involves deforming insert of fiber composite material, and separating positioning member from base body of insert at reference break section |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT, 7, DE |
|
8110 | Request for examination paragraph 44 | ||
8131 | Rejection |