DE19816838A1 - Receiving mandrel for casting bushings associated with cylinder block - Google Patents

Receiving mandrel for casting bushings associated with cylinder block

Info

Publication number
DE19816838A1
DE19816838A1 DE1998116838 DE19816838A DE19816838A1 DE 19816838 A1 DE19816838 A1 DE 19816838A1 DE 1998116838 DE1998116838 DE 1998116838 DE 19816838 A DE19816838 A DE 19816838A DE 19816838 A1 DE19816838 A1 DE 19816838A1
Authority
DE
Germany
Prior art keywords
casting
cylinder block
oval
receiving mandrel
longitudinal direction
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Withdrawn
Application number
DE1998116838
Other languages
German (de)
Inventor
Edwin Muecke
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.)
MUECKE, EDWIN, DIPL.-ING., 85737 ISMANING, DE
Original Assignee
Edwin Muecke
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 Edwin Muecke filed Critical Edwin Muecke
Priority to DE1998116838 priority Critical patent/DE19816838A1/en
Publication of DE19816838A1 publication Critical patent/DE19816838A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/18—Other cylinders
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/04—Thermal properties
    • F05C2251/042—Expansivity

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The receiving mandrel is given an oval or e.g. elliptical shape to prevent the cast bore becoming oval transversely to the longitudinal direction of the cylinder block due to thermal shrinkage after casting. The greater diameter of the oval lies in the longitudinal direction of the cylinder crankcase.

Description

Beim Gießen von Zylinderkurbelgehäusen aus Leichtmetallegierungen mit eingegossenen Laufbüchsen, deren linearer Wärmeausdehnungs­ koeffizient kleiner als der der Leichtmetallegierung ist, tritt bei der Abkühlung auf Grund der thermischen Schwindung nach dem Guß eine Ovalisierung der Bohrung quer zur Längsrichtung des Zylinderblockes auf. When casting cylinder crankcases from light alloys with cast-in liners, whose linear thermal expansion coefficient is smaller than that of the light alloy when cooling due to thermal shrinkage after the casting an ovalization of the bore transverse to the longitudinal direction of the cylinder block.  

Die erfindungsgemäße Lösung, um diese Ovalisierung zu vermeiden, besteht in der Verwendung von ovalen oder ovalähnlichen Auf­ nahmedornen der Laufbüchsen.The solution according to the invention in order to avoid this ovalization consists in the use of oval or oval-like Auf thorns of the liner.

Die Wirkungsweise besteht darin, daß durch Vorhalten der Ovali­ sierung in Längsrichtung nach der Abkühlung eine runde Bohrung erreicht wird.The mode of action is that by holding the ovali a round hole in the longitudinal direction after cooling is achieved.

Claims (1)

Patentanspruch auf patentrechtlichen Schutz der konstruktiven Ausbildung der Laufbüchesnaufnahmedorne in ovaler oder ovalähnlicher (z. B. elliptischer) Form, deren Größtdurchmeser in Längsrichtung des Zylinderkurbelgehäuses liegt.Claim to patent protection of the constructive training of the Barrel bushing mandrels in oval or oval-like (e.g. elliptical) shape, the maximum diameter in the longitudinal direction of the Cylinder crankcase lies.
DE1998116838 1998-04-16 1998-04-16 Receiving mandrel for casting bushings associated with cylinder block Withdrawn DE19816838A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1998116838 DE19816838A1 (en) 1998-04-16 1998-04-16 Receiving mandrel for casting bushings associated with cylinder block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1998116838 DE19816838A1 (en) 1998-04-16 1998-04-16 Receiving mandrel for casting bushings associated with cylinder block

Publications (1)

Publication Number Publication Date
DE19816838A1 true DE19816838A1 (en) 1999-11-25

Family

ID=7864695

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1998116838 Withdrawn DE19816838A1 (en) 1998-04-16 1998-04-16 Receiving mandrel for casting bushings associated with cylinder block

Country Status (1)

Country Link
DE (1) DE19816838A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009110833A1 (en) * 2008-03-06 2009-09-11 Camito Ab A mould and a method of its manufacture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009110833A1 (en) * 2008-03-06 2009-09-11 Camito Ab A mould and a method of its manufacture
US8505610B2 (en) 2008-03-06 2013-08-13 Verktygs Allians i Hässleholm AB Mould and a method of its manufacture

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Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: MUECKE, EDWIN, DIPL.-ING., HALL, AT

8127 New person/name/address of the applicant

Owner name: MUECKE, EDWIN, DIPL.-ING., 85737 ISMANING, DE

8139 Disposal/non-payment of the annual fee