EP0106187B1 - Kolben mit einem Bauteil aus teilstabilisiertem Zirkonoxid - Google Patents
Kolben mit einem Bauteil aus teilstabilisiertem Zirkonoxid Download PDFInfo
- Publication number
- EP0106187B1 EP0106187B1 EP83109257A EP83109257A EP0106187B1 EP 0106187 B1 EP0106187 B1 EP 0106187B1 EP 83109257 A EP83109257 A EP 83109257A EP 83109257 A EP83109257 A EP 83109257A EP 0106187 B1 EP0106187 B1 EP 0106187B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- region
- component
- truncated cone
- zirconium oxide
- 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.)
- Expired
Links
Images
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.
- a further piston with a component made of zirconium oxide is described in the reference “PSZ Ceramics for Adiabatic Engine Components by Woods / Oda.
- 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 aims 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.
- Another advantage is that the conical frustum of the zirconium oxide component is formed by the formation of the piston or its components Compressive stress is present, which counteracts critical tangential tensile stresses induced by thermal stress.
- a particular advantage is that the preloads can be varied over the cone angle in accordance with a stress analysis.
- 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.
- 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 area U1 is smaller than the diameter d2 of the component 3, which serves to form the contact area 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 5.
- the outer ring 15 can also be designed so that it encompasses the entire lower region 11 of the shaft 7.
- annular component 13 shown in FIG. 2 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 runs through the longitudinal axis L3 of the piston 1.
- FIG. 3 shows a sectional illustration of an only partially illustrated annular component 13, the upper, pointed edge of which is chamfered in area S to form a chamfer.
- annular component 13 an empty space 12 remains on the outer contour 2 of the component 3, which is also only partially shown, below the transition region U1 during assembly.
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)
- Inorganic Compounds Of Heavy Metals (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Glass Compositions (AREA)
- Endoscopes (AREA)
- Dental Preparations (AREA)
- Materials For Medical Uses (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
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 |
---|---|---|---|
DE3237469A DE3237469C2 (de) | 1982-10-09 | 1982-10-09 | Kolben mit einem Bauteil aus teilstabilisiertem Zirkonoxid |
DE3237469 | 1982-10-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0106187A1 EP0106187A1 (de) | 1984-04-25 |
EP0106187B1 true EP0106187B1 (de) | 1985-11-21 |
Family
ID=6175326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83109257A Expired EP0106187B1 (de) | 1982-10-09 | 1983-09-19 | Kolben mit einem Bauteil aus teilstabilisiertem Zirkonoxid |
Country Status (8)
Country | Link |
---|---|
US (1) | US4535683A (es) |
EP (1) | EP0106187B1 (es) |
JP (1) | JPS5987252A (es) |
AT (1) | ATE16627T1 (es) |
DE (1) | DE3237469C2 (es) |
DK (1) | DK433283A (es) |
ES (1) | ES283296Y (es) |
NO (1) | NO155985C (es) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6942570B2 (en) | 1995-06-30 | 2005-09-13 | Walker Digital, Llc | Off-line remote system for lotteries and games of skill |
US6964611B2 (en) | 1996-12-30 | 2005-11-15 | Walker Digital, Llc | System and method for automated play of lottery games |
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 |
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 |
US7588495B2 (en) | 1996-12-30 | 2009-09-15 | Walker Digital, Llc | Method and handheld apparatus for facilitating remote play of a slot machine |
US7806763B2 (en) | 1996-12-30 | 2010-10-05 | Igt | System and method for remote automated play of a gaming device |
US8500537B2 (en) | 2007-05-17 | 2013-08-06 | Walker Digital, Llc | Group play of a lottery game |
Families Citing this family (25)
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 |
DE19653164C2 (de) * | 1996-12-19 | 2000-03-23 | Brueninghaus Hydromatik Gmbh | Verfahren zur Herstellung eines Pumpenkolbens |
EP0932761B1 (de) * | 1997-07-30 | 2004-10-06 | Robert Bosch Gmbh | Kolbenpumpe |
US6032570A (en) * | 1998-04-10 | 2000-03-07 | Yamaha Hatsudoki Kabushiki Kaisha | Composite piston for machine |
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 |
ATE502200T1 (de) * | 2007-08-24 | 2011-04-15 | Thyssenkrupp Metalurgica Campo Limpo Ltda | Kolben für einen verbrennungsmotor und verfahren zur herstellung eines derartigen kolbens |
US20100108044A1 (en) * | 2008-11-06 | 2010-05-06 | International Engine Intellectual Property Company, Llc | Combustion Chamber with Double Convex Surfaces and Double Concave Surfaces |
EP2312155B1 (en) * | 2009-10-15 | 2019-03-20 | Delphi International Operations Luxembourg S.à r.l. | Fluid pump and plunger therefor |
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 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE647389C (de) * | 1935-10-15 | 1937-07-03 | Kleis Bastiaan Cornelis Van St | Tauchkolben fuer Brennkraftmaschinen |
US3976809A (en) * | 1973-08-13 | 1976-08-24 | Dowell Robert D | Coating for metal surfaces and method for application |
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 |
JPS54163208A (en) * | 1978-06-15 | 1979-12-25 | Toyota Motor Co Ltd | Builttup piston for engine |
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 |
-
1982
- 1982-10-09 DE DE3237469A patent/DE3237469C2/de not_active Expired
-
1983
- 1983-09-09 NO NO833229A patent/NO155985C/no unknown
- 1983-09-19 EP EP83109257A patent/EP0106187B1/de not_active Expired
- 1983-09-19 AT AT83109257T patent/ATE16627T1/de not_active IP Right Cessation
- 1983-09-22 DK DK433283A patent/DK433283A/da not_active Application Discontinuation
- 1983-09-27 US US06/536,214 patent/US4535683A/en not_active Expired - Fee Related
- 1983-10-06 ES ES1983283296U patent/ES283296Y/es not_active Expired
- 1983-10-11 JP JP58188576A patent/JPS5987252A/ja active Pending
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7867076B2 (en) | 1995-06-30 | 2011-01-11 | Walker Digital, Llc | Systems and methods for allocating an outcome amount among a total number of events |
US7874906B2 (en) | 1995-06-30 | 2011-01-25 | Walker Digital, Llc | Systems and methods for allocating an outcome amount among a total number of events |
US7008318B2 (en) | 1995-06-30 | 2006-03-07 | Walker Digital, Llc | Off-line remote system for lotteries and games of skill |
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 |
US7303468B2 (en) | 1995-06-30 | 2007-12-04 | Walker Digital, Llc | Off-line remote system for lotteries and games of skill |
US7887405B2 (en) | 1995-06-30 | 2011-02-15 | Walker Digital, Llc | Off-line remote system for lotteries and games of skill |
US7878894B2 (en) | 1995-06-30 | 2011-02-01 | Walker Digital, Llc | Systems and methods for allocating an outcome amount among a total number of events |
US6942570B2 (en) | 1995-06-30 | 2005-09-13 | Walker Digital, Llc | Off-line remote system for lotteries and games of skill |
US7588495B2 (en) | 1996-12-30 | 2009-09-15 | Walker Digital, Llc | Method and handheld apparatus for facilitating remote play of a slot machine |
US7837549B2 (en) | 1996-12-30 | 2010-11-23 | Walker Digital, Llc | System and method for automated play of lottery games |
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 |
US8388430B2 (en) | 1996-12-30 | 2013-03-05 | Walker Digital, Llc | System and method for automated play of lottery games |
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 |
US8500537B2 (en) | 2007-05-17 | 2013-08-06 | Walker Digital, Llc | Group play of a lottery game |
Also Published As
Publication number | Publication date |
---|---|
ES283296U (es) | 1985-05-01 |
DE3237469C2 (de) | 1984-08-09 |
EP0106187A1 (de) | 1984-04-25 |
DK433283A (da) | 1984-04-10 |
NO155985B (no) | 1987-03-23 |
ES283296Y (es) | 1985-12-16 |
DK433283D0 (da) | 1983-09-22 |
JPS5987252A (ja) | 1984-05-19 |
NO155985C (no) | 1987-07-01 |
DE3237469A1 (de) | 1984-04-12 |
NO833229L (no) | 1984-04-10 |
ATE16627T1 (de) | 1985-12-15 |
US4535683A (en) | 1985-08-20 |
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Legal Events
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Owner name: STUDIO INGG. FISCHETTI & WEBER |
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