EP0141992B1 - Piston à multiples parties pour un moteur à combustion interne, avec un conduit à huile de refroidissement partiellement isolé - Google Patents

Piston à multiples parties pour un moteur à combustion interne, avec un conduit à huile de refroidissement partiellement isolé Download PDF

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Publication number
EP0141992B1
EP0141992B1 EP84111624A EP84111624A EP0141992B1 EP 0141992 B1 EP0141992 B1 EP 0141992B1 EP 84111624 A EP84111624 A EP 84111624A EP 84111624 A EP84111624 A EP 84111624A EP 0141992 B1 EP0141992 B1 EP 0141992B1
Authority
EP
European Patent Office
Prior art keywords
piston
ring
cooling oil
combustion engines
internal
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
Application number
EP84111624A
Other languages
German (de)
English (en)
Other versions
EP0141992A2 (fr
EP0141992A3 (en
Inventor
Bernd Fäustle
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.)
Mahle GmbH
Original Assignee
Mahle 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 Mahle GmbH filed Critical Mahle GmbH
Publication of EP0141992A2 publication Critical patent/EP0141992A2/fr
Publication of EP0141992A3 publication Critical patent/EP0141992A3/de
Application granted granted Critical
Publication of EP0141992B1 publication Critical patent/EP0141992B1/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
    • F02F3/00—Pistons 
    • F02F3/0015—Multi-part pistons
    • F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping
    • 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 
    • F02F3/16—Pistons  having cooling means
    • F02F3/18—Pistons  having cooling means the means being a liquid or solid coolant, e.g. sodium, in a closed chamber in piston
    • 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 
    • F02F3/16—Pistons  having cooling means
    • F02F3/20—Pistons  having cooling means the means being a fluid flowing through or along piston
    • F02F3/22—Pistons  having cooling means the means being a fluid flowing through or along piston the fluid being liquid
    • 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

Definitions

  • the invention relates to a multi-part piston for internal combustion engines according to the preamble of the claim.
  • the object of the invention is to find a reliable and simple fixation within the piston parts to be connected for a sheet metal ring to be inserted for the isolation of certain partial areas, in which neither the material properties of the piston part in question nor its material properties due to the type of connection of the ring to be introduced can be negatively influenced.
  • a suitable type of connection can, for. B. can be achieved in that the ring to be introduced is attached to the intermediate ring with screws. The screws are then screwed in on the side of the intermediate ring which faces outwards as seen from the inside of the cooling oil duct.
  • FIG. 1 An embodiment is shown in the drawing, which shows a cooling oil channel in longitudinal section through a two-part piston.
  • a steel piston crown 1 is attached to an aluminum piston lower part 2 by fastening means, not shown. Cooling oil flows through the annular space 3.
  • a slotted flexible ring 5 is introduced to shield a partial area 4 of the annular space 3. This ring 5 is via screws 6 on an intermediate ring 7 from z. B. steel fit between the piston crown 1 and the lower piston part 2.
  • the parting line 8 of the slotted ring 5 can be welded subsequently.
  • the ring 5 is preformed in such a way that, after its mounting, it rests firmly against the piston wall region to be covered at its upper free end.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Claims (1)

  1. Piston en plusieurs parties, destiné à des moteurs à combustion interne, comprenant un canal (3) d'huile de refroidissement, fermé, disposé dans la zone de jonction entre la tête de piston et la partie inférieure du piston, à proximité des gorges annulaires du piston (segments), dans lequel, pour l'isolation thermique des gorges de segments, des zones partielles (4) sont séparées par au moins une garniture annulaire (5), piston caractérisé en ce que cette garniture annulaire (5) est reliée, de façon à pouvoir être démontée sans destruction, à une bague intermédiaire (7), et en ce que la bague intermédiaire (7) est coincée entre la tête (1) de piston et la partie inférieure (2) du piston qui sont reliées entre elles.
EP84111624A 1983-10-26 1984-09-28 Piston à multiples parties pour un moteur à combustion interne, avec un conduit à huile de refroidissement partiellement isolé Expired EP0141992B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3338809 1983-10-26
DE3338809 1983-10-26

Publications (3)

Publication Number Publication Date
EP0141992A2 EP0141992A2 (fr) 1985-05-22
EP0141992A3 EP0141992A3 (en) 1986-05-21
EP0141992B1 true EP0141992B1 (fr) 1988-05-04

Family

ID=6212749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84111624A Expired EP0141992B1 (fr) 1983-10-26 1984-09-28 Piston à multiples parties pour un moteur à combustion interne, avec un conduit à huile de refroidissement partiellement isolé

Country Status (3)

Country Link
EP (1) EP0141992B1 (fr)
JP (1) JPS60111048A (fr)
DE (1) DE3470908D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6463903B1 (en) * 2001-08-30 2002-10-15 Caterpillar Inc Piston assembly for free piston internal combustion engine
DE102012206392A1 (de) 2012-04-18 2013-10-24 Mahle International Gmbh Kolben für eine Brennkraftmaschine
US10294887B2 (en) 2015-11-18 2019-05-21 Tenneco Inc. Piston providing for reduced heat loss using cooling media

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB348084A (en) * 1928-11-09 1931-04-28 Hugo Junkers Improvements in and relating to pistons for engines
DE3017787A1 (de) * 1980-05-09 1981-11-12 Klöckner-Humboldt-Deutz AG, 5000 Köln Mehrteiliger kolben fuer verbrennungsmotoren

Also Published As

Publication number Publication date
EP0141992A2 (fr) 1985-05-22
DE3470908D1 (en) 1988-06-09
EP0141992A3 (en) 1986-05-21
JPS60111048A (ja) 1985-06-17

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