EP0210649A3 - Light-weight metal piston - Google Patents

Light-weight metal piston Download PDF

Info

Publication number
EP0210649A3
EP0210649A3 EP86110453A EP86110453A EP0210649A3 EP 0210649 A3 EP0210649 A3 EP 0210649A3 EP 86110453 A EP86110453 A EP 86110453A EP 86110453 A EP86110453 A EP 86110453A EP 0210649 A3 EP0210649 A3 EP 0210649A3
Authority
EP
European Patent Office
Prior art keywords
piston
insert
base material
light
covered
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
EP86110453A
Other languages
German (de)
Other versions
EP0210649B1 (en
EP0210649A2 (en
Inventor
Gerhard Dipl.-Ing. Bohm
Helmut Zweck
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.)
Novelis Deutschland GmbH
Original Assignee
Alcan Aluminiumwerk Nuernberg GmbH
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 Alcan Aluminiumwerk Nuernberg GmbH filed Critical Alcan Aluminiumwerk Nuernberg GmbH
Priority to AT86110453T priority Critical patent/ATE48895T1/en
Publication of EP0210649A2 publication Critical patent/EP0210649A2/en
Publication of EP0210649A3 publication Critical patent/EP0210649A3/en
Application granted granted Critical
Publication of EP0210649B1 publication Critical patent/EP0210649B1/en
Expired 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
    • F02F3/00—Pistons 
    • F02F3/02—Pistons  having means for accommodating or controlling heat expansion
    • 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 
    • F02F3/02—Pistons  having means for accommodating or controlling heat expansion
    • F02F3/04—Pistons  having means for accommodating or controlling heat expansion having expansion-controlling inserts
    • F02F3/08—Pistons  having means for accommodating or controlling heat expansion having expansion-controlling inserts the inserts being ring-shaped
    • 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 
    • F02F3/02—Pistons  having means for accommodating or controlling heat expansion
    • F02F3/04—Pistons  having means for accommodating or controlling heat expansion having expansion-controlling inserts
    • F02F3/045—Pistons  having means for accommodating or controlling heat expansion having expansion-controlling inserts the inserts being located in the crown
    • 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

Abstract

Light-metal piston for combustion engines, having a sleeve-like insert embedded therein and controlling its heat expansion and being formed of a metal of smaller heat expansion coefficient than the piston base material. The insert is arranged in the solid material of the piston crown and extends around the entire piston periphery. Behind the insert, the piston base material is self-contracted to form a gap delimited by the insert on one side. On at least one edge or one side, the insert is not covered by piston base material, i.e. it extends up to the piston surface, this occurring however only in certain segments and not along the entire piston periphery. In the other segments, the insert lies beneath the piston surface and is thus covered by piston base material. To the extent that the insert is exposed on the piston end face, it is provided with an edge zone covering the depth of the self-contraction gap.
EP86110453A 1985-07-31 1986-07-29 Light-weight metal piston Expired EP0210649B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86110453T ATE48895T1 (en) 1985-07-31 1986-07-29 ALLOY PISTON.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3527447 1985-07-31
DE19853527447 DE3527447A1 (en) 1985-07-31 1985-07-31 LIGHT METAL PISTON

Publications (3)

Publication Number Publication Date
EP0210649A2 EP0210649A2 (en) 1987-02-04
EP0210649A3 true EP0210649A3 (en) 1987-04-29
EP0210649B1 EP0210649B1 (en) 1989-12-20

Family

ID=6277295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110453A Expired EP0210649B1 (en) 1985-07-31 1986-07-29 Light-weight metal piston

Country Status (7)

Country Link
US (1) US4754731A (en)
EP (1) EP0210649B1 (en)
JP (1) JPS6241953A (en)
KR (1) KR870001392A (en)
AT (1) ATE48895T1 (en)
BR (1) BR8603617A (en)
DE (2) DE3527447A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4110306A1 (en) * 1990-09-20 1992-03-26 Mahle Gmbh SUBMERSIBLE ALLOY PISTON FOR OTTO ENGINES
JP2000008948A (en) * 1998-04-21 2000-01-11 Nissan Motor Co Ltd Piston of internal combustion engine
DE19848649C5 (en) * 1998-10-22 2008-11-27 Peter Greiner Carbon piston for an internal combustion engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB407478A (en) * 1931-12-11 1934-03-22 Karl Friedrich Wagner Improvements in or relating to pistons for internal combustion engines
DE630440C (en) * 1936-05-28 Elektronmetall G M B H Light metal pistons for internal combustion engines
GB530570A (en) * 1939-06-09 1940-12-16 Frank Hunter Clayton Improvements in and relating to pistons for internal combustion engines and the like
CH346068A (en) * 1956-12-03 1960-04-30 Fonderie Tech De Vitry Sur Sei Internal combustion engine piston

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094903A (en) * 1961-08-17 1963-06-25 Zollner Corp Piston head with heat dam or barrier
US3190273A (en) * 1964-01-03 1965-06-22 Continental Aviat & Eng Corp Piston for internal combustion engine
DE2441933C3 (en) * 1974-09-02 1980-08-14 Karl Schmidt Gmbh, 7107 Neckarsulm Unslotted light metal piston for highly loaded internal combustion engines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE630440C (en) * 1936-05-28 Elektronmetall G M B H Light metal pistons for internal combustion engines
GB407478A (en) * 1931-12-11 1934-03-22 Karl Friedrich Wagner Improvements in or relating to pistons for internal combustion engines
GB530570A (en) * 1939-06-09 1940-12-16 Frank Hunter Clayton Improvements in and relating to pistons for internal combustion engines and the like
CH346068A (en) * 1956-12-03 1960-04-30 Fonderie Tech De Vitry Sur Sei Internal combustion engine piston

Also Published As

Publication number Publication date
DE3527447A1 (en) 1987-02-12
JPS6241953A (en) 1987-02-23
DE3667703D1 (en) 1990-01-25
ATE48895T1 (en) 1990-01-15
EP0210649B1 (en) 1989-12-20
EP0210649A2 (en) 1987-02-04
BR8603617A (en) 1987-03-10
US4754731A (en) 1988-07-05
KR870001392A (en) 1987-03-13

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