EP0373689A1 - Piston refroidi par huile pour des moteurs à combustion interne - Google Patents

Piston refroidi par huile pour des moteurs à combustion interne Download PDF

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Publication number
EP0373689A1
EP0373689A1 EP89202981A EP89202981A EP0373689A1 EP 0373689 A1 EP0373689 A1 EP 0373689A1 EP 89202981 A EP89202981 A EP 89202981A EP 89202981 A EP89202981 A EP 89202981A EP 0373689 A1 EP0373689 A1 EP 0373689A1
Authority
EP
European Patent Office
Prior art keywords
piston
support
groove
bores
plane
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
EP89202981A
Other languages
German (de)
English (en)
Other versions
EP0373689B1 (fr
Inventor
Klaus Griesbach
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.)
Kolbenschmidt AG
Original Assignee
Kolbenschmidt 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 Kolbenschmidt AG filed Critical Kolbenschmidt AG
Publication of EP0373689A1 publication Critical patent/EP0373689A1/fr
Application granted granted Critical
Publication of EP0373689B1 publication Critical patent/EP0373689B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02F3/0023—Multi-part pistons the parts being bolted or screwed together
    • 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
    • F02F3/225—Pistons  having cooling means the means being a fluid flowing through or along piston the fluid being liquid the liquid being directed into blind holes
    • 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

  • this hole opens tangentially into the blind hole in order to ensure an optimal course of the cooling oil flow.
  • the arrangement of the circumferential groove and the holes with a comparatively small diameter connecting the blind holes with the groove, from which the cooling oil emerges at high speed, and their position in relation to the parting plane, makes it possible that even in the exposed areas of the pipe, which rises radially with respect to the parting plane to the outside of the blind holes, the heat incident there is removed as quickly as possible and the coking of the cooling oil is avoided or deposits are avoided.
  • the piston is constructed from a gray cast iron, the piston pin (1) receiving the lower part (2) and a steel, the central cooling chamber (3) delimiting and the ring section (4) supporting upper part (5) with a flat combustion chamber bowl (6) .
  • the lower part (2) and the upper part (5) are clamped together by expansion screws, not shown.
  • the lower part (2) is set back on both sides of the horizontal plane enclosing the pin axis direction and on the piston foot side up to the lower end like a sinew against the outer circumference of the lower part (2) and the hubs (7) of the pin eyes are displaced towards the piston axis.
  • the lower part (2) and the upper part (5) are supported against one another by means of annular support surfaces (10, 11), which are in their separation plane perpendicular to the piston axis and are attached to support collars (8, 9).
  • the expansion screws are led through the support collars (8,9) and the contact surfaces (10,11).
  • a circumferential empty groove (13) with a circular cylindrical section (14) which branches off at right angles and runs parallel to the piston axis and extends behind the ring section.
  • the ring section (4) has two ring grooves (15, 16) for receiving compression rings and one ring groove (17) for receiving an oil ring.
  • the radially outward slope extends at an angle of 45 ° to the separation level blind holes (20) running behind the top land (21) and under the area of the rim of the piston crown.
  • Coaxial blind holes (22) are arranged in the central part of the piston head in a hexagonal configuration, not shown.
  • the lower part (2) can also consist of an aluminum piston alloy.

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)
EP89202981A 1988-12-16 1989-11-23 Piston refroidi par huile pour des moteurs à combustion interne Expired - Lifetime EP0373689B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3842321 1988-12-16
DE3842321A DE3842321A1 (de) 1988-12-16 1988-12-16 Kolben mit oelkuehlung fuer brennkraftmaschinen

Publications (2)

Publication Number Publication Date
EP0373689A1 true EP0373689A1 (fr) 1990-06-20
EP0373689B1 EP0373689B1 (fr) 1993-01-20

Family

ID=6369274

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89202981A Expired - Lifetime EP0373689B1 (fr) 1988-12-16 1989-11-23 Piston refroidi par huile pour des moteurs à combustion interne

Country Status (2)

Country Link
EP (1) EP0373689B1 (fr)
DE (2) DE3842321A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004029443A1 (fr) * 2002-09-25 2004-04-08 Mahle Gmbh Piston monobloc a conduite de refroidissement pour moteur a combustion interne
WO2005121537A1 (fr) * 2004-06-08 2005-12-22 Mahle Gmbh Piston construit et procede permettant d'empecher l'endommagement des surfaces de la partie superieure et de la partie inferieure du piston, ces surfaces etant en contact l'une avec l'autre
WO2020077033A3 (fr) * 2018-10-11 2020-08-06 Tenneco Inc. Mise en forme de piston à galerie de refroidissement pour réduire la température de piston
US10871125B2 (en) * 2015-11-02 2020-12-22 Ks Kolbenschmidt Gmbh Optimized hub support

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI106396B (fi) * 1998-11-19 2001-01-31 Wecometal Oy Polttomoottorin mäntä

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE873185C (de) * 1948-03-22 1953-04-13 Napier & Son Ltd Kolben, insbesondere fuer Brennkraftmaschinen
DE1119601B (de) * 1957-01-15 1961-12-14 Karl Schmidt Ges Mit Beschraen Vorrichtung zum Kuehlen von Leichtmetallkolben fuer Brennkraftmaschinen
EP0041416A1 (fr) * 1980-05-30 1981-12-09 Societe D'etudes De Machines Thermiques S.E.M.T. Piston de machine à pistons alternatifs, notamment de moteur à combustion interne
EP0285205A1 (fr) * 1987-03-26 1988-10-05 KOLBENSCHMIDT Aktiengesellschaft Piston refroidi par liquide

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE873185C (de) * 1948-03-22 1953-04-13 Napier & Son Ltd Kolben, insbesondere fuer Brennkraftmaschinen
DE1119601B (de) * 1957-01-15 1961-12-14 Karl Schmidt Ges Mit Beschraen Vorrichtung zum Kuehlen von Leichtmetallkolben fuer Brennkraftmaschinen
EP0041416A1 (fr) * 1980-05-30 1981-12-09 Societe D'etudes De Machines Thermiques S.E.M.T. Piston de machine à pistons alternatifs, notamment de moteur à combustion interne
EP0285205A1 (fr) * 1987-03-26 1988-10-05 KOLBENSCHMIDT Aktiengesellschaft Piston refroidi par liquide

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004029443A1 (fr) * 2002-09-25 2004-04-08 Mahle Gmbh Piston monobloc a conduite de refroidissement pour moteur a combustion interne
CN100368674C (zh) * 2002-09-25 2008-02-13 玛勒有限公司 内燃机用单部件冷却通道活塞
WO2005121537A1 (fr) * 2004-06-08 2005-12-22 Mahle Gmbh Piston construit et procede permettant d'empecher l'endommagement des surfaces de la partie superieure et de la partie inferieure du piston, ces surfaces etant en contact l'une avec l'autre
US10871125B2 (en) * 2015-11-02 2020-12-22 Ks Kolbenschmidt Gmbh Optimized hub support
WO2020077033A3 (fr) * 2018-10-11 2020-08-06 Tenneco Inc. Mise en forme de piston à galerie de refroidissement pour réduire la température de piston
CN112840111A (zh) * 2018-10-11 2021-05-25 天纳克有限责任公司 活塞冷却通道成型以降低活塞温度

Also Published As

Publication number Publication date
EP0373689B1 (fr) 1993-01-20
DE58903352D1 (de) 1993-03-04
DE3842321A1 (de) 1990-06-21

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