EP0106187A1 - Piston avec un élément en zircone stabilisé partiellement - Google Patents

Piston avec un élément en zircone stabilisé partiellement Download PDF

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Publication number
EP0106187A1
EP0106187A1 EP83109257A EP83109257A EP0106187A1 EP 0106187 A1 EP0106187 A1 EP 0106187A1 EP 83109257 A EP83109257 A EP 83109257A EP 83109257 A EP83109257 A EP 83109257A EP 0106187 A1 EP0106187 A1 EP 0106187A1
Authority
EP
European Patent Office
Prior art keywords
component
piston
region
frustoconical
shaft
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
EP83109257A
Other languages
German (de)
English (en)
Other versions
EP0106187B1 (fr
Inventor
Ulf Dr. Dipl.-Mineraloge Dworak
Hans Dr. Dipl.-Chem. Olapinski
Dieter Dr. Dipl.-Ing. Fingerle
Ulrich Dr. Dipl.-Ing. Krohn
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.)
Feldmuehle AG
Original Assignee
Feldmuehle 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 Feldmuehle AG filed Critical Feldmuehle AG
Priority to AT83109257T priority Critical patent/ATE16627T1/de
Publication of EP0106187A1 publication Critical patent/EP0106187A1/fr
Application granted granted Critical
Publication of EP0106187B1 publication Critical patent/EP0106187B1/fr
Expired legal-status Critical Current

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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
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0085—Materials for constructing engines or their parts
    • F02F7/0087—Ceramic materials
    • 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
    • F02F3/00—Pistons 
    • F02F3/0015—Multi-part 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
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium
    • 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
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0448—Steel
    • 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

Definitions

  • the present invention relates to a piston with a metallic piston skirt and a piston head connected to it by means of a shrink connection, opposite the combustion chamber and possibly having a combustion bowl, with a component made of partially stabilized zirconium oxide.
  • the metallic shaft can have a pair of piston pin hubs or some other fastening option for a connecting rod.
  • PSZ Ceramics for Adiabatic Engine Components by Woods / Oda is another piston with one component. described from zirconium oxide.
  • the zirconium oxide component which has a combustion bowl, has a collar which is shrunk on the edge into a piston skirt made of iron.
  • the piston skirt is flush with the collar, so that here too there is the disadvantage of incomplete insulation because the edge region of the piston skirt forms a heat-conducting bridge.
  • Another disadvantage of this piston is that essentially only iron can be used as the material for producing the piston skirt, because its thermal expansion essentially corresponds to that of zirconium oxide. Most steels and the widely used aluminum, however, are not suitable because they have a higher thermal expansion.
  • the object of the present invention is to bring about improved thermal insulation in relation to the combustion chamber in a piston with a metallic piston skirt and a component made from partially stabilized zirconium oxide. Furthermore, the invention wants to create a firm and reliable connection between the metallic piston skirt and the component made of partially stabilized zirconium oxide and thereby avoid thermally induced stress cracks in the individual components. Another object of the invention sees the creation of an easily assembled piston.
  • the present invention thus creates a piston which is completely thermally insulated on the combustion chamber side, which enables simple assembly of the individual components and in which the individual components have an absolutely secure and firm fit under operating conditions.
  • a further advantage is that the conical region of the zirconium oxide component is under compressive stress due to the design of the piston or its components, which counteracts critical tangential tensile stresses induced by thermal stress.
  • a particular advantage is that the preloads are varied over the cone angle in accordance with a stress analysis can.
  • the piston according to the invention is characterized in that piston ring grooves are embedded in the outer wall of the outer ring.
  • the outer ring is made of steel.
  • the ring-shaped component also consists of steel, but in a particularly preferred embodiment the ring-shaped component also consists of partially stabilized zirconium oxide.
  • the piston has a shaft made of aluminum.
  • zirconium oxide in which the angle a between 70 ° and 85 0, preferably between 75 ° and 82 °.
  • the invention provides in a further particularly preferred embodiment that the inner contour of the annular component is not completely matched to the frustoconical configuration of the component in its transition region from the upper to the lower region.
  • the ring-shaped component has a rounding or a chamfer in this area.
  • 3 denotes a component made of partially stabilized zirconium oxide.
  • the upper region 5 of the piston crown which delimits the combustion chamber (not shown), consists over the entire area with the diameter d1 of the component 3 made from partially stabilized zirconium oxide d3 of the truncated cone in the transition region U1 is smaller than the diameter d2 of the component 3, which is used for the development of the contact region B of the component 3 with the metallic shaft 7.
  • 7 designates in its upper region 10 a frustoconical aluminum shaft, the surface 9 of which forms the contact region B with the component 3 has the same diameter d2 as the lower bottom surface 8 of the component 3.
  • the shaft 7 is cylindrical, the diameter d4 being smaller than the diameter d2 in the transition region U2 from the upper region 10 to the lower region 11.
  • An annular annular component 13 made of partially stabilized zirconium oxide and divided in the axial direction of the piston, the inner contours 14 of which correspond to the frustoconically shaped lower region 6 of the component 3 and the frustoconically shaped upper region 10 of the aluminum shaft 7, grips these regions of the aluminum shaft and the zirconium oxide component .
  • An outer ring 15 made of steel, which is pushed over the annular component 13 and the shaft 7 after heating to 400 ° C., after its cooling, the component 3, the metallic shaft 7 and the annular component 13 are firmly joined together.
  • the inner diameter of the outer ring 15 corresponds to the outer diameter of the shaft 7.
  • a combustion bowl is designated, which is arranged in the upper region 5 of the piston crown.
  • the outer ring 15 has in its outer wall 17 recessed piston ring grooves 16 for receiving piston rings, not shown.
  • the outer ring 15 ends above the piston pin hub pair 4.
  • the outer ring 15 can also be designed such that it encompasses the entire lower region 11 of the shaft 7.
  • 14 denotes the inner contour for gripping the frustoconical lower region 6 of the component 3 and the frustoconical upper region 10 of the aluminum shaft.
  • the ring-shaped component 13 is divided into two along the line L1, L2, which leads through the longitudinal axis L3 of the piston 1.
  • FIG. 3 shows a sectional illustration of a ring-shaped component 13, only partially shown, the upper tip edge of which is chamfered in area S to form a chamfer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Glass Compositions (AREA)
  • Endoscopes (AREA)
  • Dental Preparations (AREA)
  • Materials For Medical Uses (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
EP83109257A 1982-10-09 1983-09-19 Piston avec un élément en zircone stabilisé partiellement Expired EP0106187B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83109257T ATE16627T1 (de) 1982-10-09 1983-09-19 Kolben mit einem bauteil aus teilstabilisiertem zirkonoxid.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3237469 1982-10-09
DE3237469A DE3237469C2 (de) 1982-10-09 1982-10-09 Kolben mit einem Bauteil aus teilstabilisiertem Zirkonoxid

Publications (2)

Publication Number Publication Date
EP0106187A1 true EP0106187A1 (fr) 1984-04-25
EP0106187B1 EP0106187B1 (fr) 1985-11-21

Family

ID=6175326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83109257A Expired EP0106187B1 (fr) 1982-10-09 1983-09-19 Piston avec un élément en zircone stabilisé partiellement

Country Status (8)

Country Link
US (1) US4535683A (fr)
EP (1) EP0106187B1 (fr)
JP (1) JPS5987252A (fr)
AT (1) ATE16627T1 (fr)
DE (1) DE3237469C2 (fr)
DK (1) DK433283A (fr)
ES (1) ES283296Y (fr)
NO (1) NO155985C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6607439B2 (en) 1995-06-30 2003-08-19 Walker Digital, Llc Off-line remote system for lotteries and games of skill
EP2312155A1 (fr) * 2009-10-15 2011-04-20 Delphi Technologies Holding S.à.r.l. Pompe à fluide et piston correspondant

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60180969A (ja) * 1984-02-28 1985-09-14 日本碍子株式会社 エンジン部品およびその製造法
GB8411074D0 (en) * 1984-05-01 1984-06-06 Ae Plc Reinforced pistons
US4639802A (en) * 1984-06-25 1987-01-27 International Business Machines Corporation Shrink ring for disk clamping
US4649806A (en) * 1985-04-04 1987-03-17 Ford Motor Company Composite ceramic/metal piston assembly and method of making
US4741254A (en) * 1986-06-12 1988-05-03 Taylor Julian S Pump plunger
US4898135A (en) * 1989-02-16 1990-02-06 Sonex Research, Inc. Piston and process for achieving controlled ignition and combustion of hydrocarbon fuels in internal combustion engines by generation and management of fuel radical species
US4986234A (en) * 1989-10-31 1991-01-22 Inco Limited Polymetallic piston-cylinder configuration for internal combustion engines
DE4100854A1 (de) * 1991-01-14 1992-07-23 Seajet Motor Gmbh Keramikkolben
US5322042A (en) * 1992-06-17 1994-06-21 Sonex Research, Inc. Combustion chamber for internal combustion engine and process of combustion using fuel radical species
US7179168B1 (en) 1995-06-30 2007-02-20 Walker Digital, Llc Systems and methods for allocating an outcome amount among a total number of events
DE19653164C2 (de) * 1996-12-19 2000-03-23 Brueninghaus Hydromatik Gmbh Verfahren zur Herstellung eines Pumpenkolbens
US6634942B2 (en) 1996-12-30 2003-10-21 Jay S. Walker System and method for automated play of multiple gaming devices
US7806763B2 (en) 1996-12-30 2010-10-05 Igt System and method for remote automated play of a gaming device
US6964611B2 (en) 1996-12-30 2005-11-15 Walker Digital, Llc System and method for automated play of lottery games
JP2001501275A (ja) * 1997-07-30 2001-01-30 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング ピストンポンプ
US6032570A (en) * 1998-04-10 2000-03-07 Yamaha Hatsudoki Kabushiki Kaisha Composite piston for machine
US7452270B2 (en) 2000-06-29 2008-11-18 Walker Digital, Llc Systems and methods for presenting an outcome amount via a total number of events
US6513476B1 (en) * 2001-08-20 2003-02-04 International Engine Inellectual Property Company, L.L.C. Piston having combustion chamber defined in the crown
US6705273B1 (en) 2002-09-30 2004-03-16 International Engine Intellectual Property Company, Llc Combustion chamber
DE10256063A1 (de) * 2002-11-30 2004-06-17 Mahle Gmbh Verfahren zum Beschichten von Kolbenringen für Verbrennungsmotoren
US6868817B2 (en) * 2002-12-13 2005-03-22 International Engine Intellectual Property Company, Llc Simplified combustion chamber
US6955165B2 (en) 2003-03-13 2005-10-18 International Engine Intellectual Property Company, Llc Three-reentrancy combustion chamber
US6945210B2 (en) * 2003-09-29 2005-09-20 International Engine Intellectual Property Company, Llc Combustion chamber with one concave surface and three convex surfaces
US6935301B2 (en) * 2003-12-01 2005-08-30 International Engine Intellectual Property Company, Llc Combustion chamber
DE102004028459A1 (de) * 2004-06-11 2005-12-29 Mahle Gmbh Gebauter Kolben für einen Verbrennungsmotor
US6997158B1 (en) 2004-10-07 2006-02-14 International Engine Intellectual Property Company, Llc Diesel combustion chamber
US8500537B2 (en) 2007-05-17 2013-08-06 Walker Digital, Llc Group play of a lottery game
EP2028357B1 (fr) * 2007-08-24 2011-03-16 ThyssenKrupp Metalúrgica Campo Limpo Ltda. Piston pour moteur à combustion interne et procédé de fabrication d'un piston de ce type
US20100108044A1 (en) * 2008-11-06 2010-05-06 International Engine Intellectual Property Company, Llc Combustion Chamber with Double Convex Surfaces and Double Concave Surfaces
CN107642430B (zh) * 2017-08-10 2019-02-26 中国北方发动机研究所(天津) 一种组合隔热活塞独立式活塞环支撑体结构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976809A (en) * 1973-08-13 1976-08-24 Dowell Robert D Coating for metal surfaces and method for application
DE2923934A1 (de) * 1978-06-15 1979-12-20 Toyota Motor Co Ltd Zusammengesetzter kolben fuer verbrennungskraftmaschinen

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
DE647389C (de) * 1935-10-15 1937-07-03 Kleis Bastiaan Cornelis Van St Tauchkolben fuer Brennkraftmaschinen
US3882841A (en) * 1973-09-19 1975-05-13 Abraham Silverstein Glow plate for internal combustion engine
GB1577685A (en) * 1976-12-30 1980-10-29 Cummins Engine Co Inc Insulated composite piston
US4419925A (en) * 1978-06-15 1983-12-13 Toyota Jidosha Kogyo Kabushiki Kaisha Assembled piston for engine
US4404935A (en) * 1981-04-27 1983-09-20 Kyocera International, Inc. Ceramic capped piston

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976809A (en) * 1973-08-13 1976-08-24 Dowell Robert D Coating for metal surfaces and method for application
DE2923934A1 (de) * 1978-06-15 1979-12-20 Toyota Motor Co Ltd Zusammengesetzter kolben fuer verbrennungskraftmaschinen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Patent Abstracts of Japan Band 6, Nr. 26, 16. Februar 1982 & JP-A-56-143328 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6607439B2 (en) 1995-06-30 2003-08-19 Walker Digital, Llc Off-line remote system for lotteries and games of skill
EP2312155A1 (fr) * 2009-10-15 2011-04-20 Delphi Technologies Holding S.à.r.l. Pompe à fluide et piston correspondant

Also Published As

Publication number Publication date
ES283296U (es) 1985-05-01
NO155985B (no) 1987-03-23
EP0106187B1 (fr) 1985-11-21
ES283296Y (es) 1985-12-16
DK433283D0 (da) 1983-09-22
NO833229L (no) 1984-04-10
DE3237469A1 (de) 1984-04-12
DK433283A (da) 1984-04-10
US4535683A (en) 1985-08-20
NO155985C (no) 1987-07-01
ATE16627T1 (de) 1985-12-15
JPS5987252A (ja) 1984-05-19
DE3237469C2 (de) 1984-08-09

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