EP0007661B1 - Assemblage de piston de moteur à combustion interne comportant des moyens de refroidissement liquide - Google Patents

Assemblage de piston de moteur à combustion interne comportant des moyens de refroidissement liquide Download PDF

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Publication number
EP0007661B1
EP0007661B1 EP79200376A EP79200376A EP0007661B1 EP 0007661 B1 EP0007661 B1 EP 0007661B1 EP 79200376 A EP79200376 A EP 79200376A EP 79200376 A EP79200376 A EP 79200376A EP 0007661 B1 EP0007661 B1 EP 0007661B1
Authority
EP
European Patent Office
Prior art keywords
piston
bearing
ring
gripped
rib
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
EP79200376A
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German (de)
English (en)
Other versions
EP0007661A1 (fr
Inventor
Horst Dr. Ing. Moebus
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
Karl Schmidt 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6045533&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0007661(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kolbenschmidt AG, Karl Schmidt GmbH filed Critical Kolbenschmidt AG
Publication of EP0007661A1 publication Critical patent/EP0007661A1/fr
Application granted granted Critical
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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 
    • F02F3/16—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
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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
    • F02F2200/00—Manufacturing
    • F02F2200/04—Forging of engine parts
    • 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 built, liquid-cooled piston for internal combustion engines, in particular for medium-speed diesel engines, the lower part of which consists of a eutectic aluminum-silicon alloy and which is connected to the upper part made of an iron material by means of screws and in which a concentrically extending part on the underside of the upper part , is arranged on an opposite support surface of the lower part via a concentric arranged intermediate ring made of a ferrous support collar such that the support collar and the intermediate ring both the radial inner boundary of the annular cooling channel located in the upper part in the area behind the top land and at least part of the ring section form as well as include a central, upwardly open cooling space connected to the cooling channel via radially arranged coolant bores.
  • Cast or forged steel is a suitable material for the piston head, as is nodular cast iron with its strength values similar to those of steel.
  • the piston lower part which consists of a shaft and a pin hub, can be made of a cast or forged aluminum piston alloy. Both components are connected to each other via tie rods or screws.
  • Such two-part pistons all require cooling, preferably by means of a cooling oil.
  • This object is achieved in that the intermediate ring is clamped between the support surface of the support collar and the opposite support surface of the lower part and in that the mutually opposite support surfaces of the support collar and intermediate ring are designed such that they can be rolled over one another over the entire circumference or the opposite support surfaces with a circular cross section are designed to slide are supported on each other.
  • one or both of the opposing contact surfaces of the support collar and intermediate ring can be hardened, chrome-plated, nitrided or surface-treated in some other way.
  • the intermediate ring In order to center the intermediate ring, it is either inserted in a concentric recess in the lower piston part or provided on its lower inner or outer edge with a circumferential centering lug which rests on a concentric recess in the lower piston part.
  • the intermediate cross section of the intermediate ring can be rectangular, trapezoidal or similar.
  • its axially extending side surfaces can be concave.
  • An internal combustion engine piston in which a cross-sectionally fork-shaped intermediate ring is arranged between the steel upper part and the light metal lower part, the foot part of which is screwed to the lower part and the fork part of which is screwed to the upper part (DE-R-2 230 722 and US-A-3 877 351).
  • this piston is only about a favorable arrangement of the screw elements connecting the individual components.
  • FIG 3 shows a section of a longitudinal section through the upper part of a piston formed from an upper part 10 made of spheroidal graphite cast iron and a lower part 11 made from an aluminum piston alloy.
  • the trapezoidal steel intermediate ring 15 is clamped between the support surface 12 of the support collar 13, which is circular in cross section, and the support surface 14 of the lower part 11, the centering nose 16 arranged on its lower outer edge abutting the recess 17 of the lower piston part 11.
  • the bearing surface 12 of the support collar 13, which is circular in cross-section, is supported in a sliding manner on the opposite bearing surface 18 of the intermediate ring 15, which is in the form of a circular cross section.
  • the cooling channel and the cooling space are connected to one another via the coolant bores 21 and 22, respectively.
  • the advantages achieved by the invention are that no wear and tear can be detected on the bearing surface of the lower piston part even after a comparatively long piston life.

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 (6)

1. Piston assemblé à refroidissement par un liquide pour des moteurs à combustion interne, plus particulièrement pour des moteurs Diesel à régime moyen, dont la partie inférieure (2, 11), constituée avec un alliage entectique aluminium- silicium, est reliée par des vis à la partie supérieure (1, 10) constituée en un matériau ferreux, et dans lequel il est prévu, sur la face inférieure de la partie supérieure (1, 10), un collet d'appui (4, 13) s'étendant concentriquement et s'appuyant de telle manière contre une surface d'appui opposée (5, 14) de la partie inférieure (2), par l'intermédiaire d'une bague intermédiaire (7, 15, 19) disposée concentriquement et constituée en un matériau ferreux, que ledit collet d'appui (4, 13) et la bague intermédiaire (7, 15. 19) forment aussi bien la limitation radiale interne du canal annulaire de refroidissement se situant dans la zone disposée derrière le rebord de feu et au moins une partie de l'élément de bague, et comportent une chambre centrale de refroidissement, ouverte vers le haut et reliée au canal de refroidissement par l'intermédiaire de perçages (21, 22) disposés radialement, pour le milieu de refroidissement, caractérisé par le fait que la bague intermédiaire (7, 15, 19) est coincée entre la surface d'appui (3, 12) du collet d'appui (4, 13) et la surface d'appui opposée (5, 14) de la partie inférieure (2, 11) et que les surfaces d'appui du collet d'appui (4, 13) et de la bague intermédiaire (7, 15, 19), situées en face entre elles, sont conformées de manière à rouler l'une sur l'autre sur la totalité de la périphérie, ou que les surfaces d'appui, qui se situent en face entre elles et qui ont, en section transversale, la forme d'un segment de cercle, s'appuient à glissement entre elles.
EP79200376A 1978-07-27 1979-07-09 Assemblage de piston de moteur à combustion interne comportant des moyens de refroidissement liquide Expired EP0007661B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2832970 1978-07-27
DE19782832970 DE2832970A1 (de) 1978-07-27 1978-07-27 Gebauter, fluessigkeitsgekuehlter kolben fuer brennkraftmaschinen

Publications (2)

Publication Number Publication Date
EP0007661A1 EP0007661A1 (fr) 1980-02-06
EP0007661B1 true EP0007661B1 (fr) 1981-09-23

Family

ID=6045533

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79200376A Expired EP0007661B1 (fr) 1978-07-27 1979-07-09 Assemblage de piston de moteur à combustion interne comportant des moyens de refroidissement liquide

Country Status (5)

Country Link
US (1) US4356800A (fr)
EP (1) EP0007661B1 (fr)
JP (2) JPS5519999A (fr)
DE (2) DE2832970A1 (fr)
ES (1) ES244842Y (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0985739A1 (fr) * 1998-09-10 2000-03-15 MMS Marine Motor Service Procédé pour le durcissement de têtes de piston et tête de piston
DE102006055251A1 (de) * 2006-11-23 2008-05-29 Mahle International Gmbh Zweiteiliger Kolben für einen Verbrennungsmotor

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5840408A (ja) * 1981-09-04 1983-03-09 Mitsubishi Heavy Ind Ltd 燃焼器
JPS59500003A (ja) * 1981-12-28 1984-01-05 アルコ・パワ−・インコ−ポレ−テツド プレストレス複合ピストン
DE3303984C1 (de) * 1983-02-05 1984-05-24 Mahle Gmbh, 7000 Stuttgart Mehrteiliger,fluessigkeitsgekuehlter Kolben fuer Verbrennungsmotoren
DE3423559C1 (de) * 1984-06-27 1985-09-26 Mahle Gmbh, 7000 Stuttgart Mehrteiliger Tauchkolben fuer Verbrennungsmotoren
DE3540085A1 (de) * 1985-11-12 1987-05-14 Alcan Aluminiumwerke Kolben fuer brennkraftmaschinen
DE3633134A1 (de) * 1986-09-30 1988-04-07 Man B & W Diesel Gmbh Gebauter kolben fuer brennkraftmaschinen
GB8714287D0 (en) * 1987-06-18 1987-07-22 Ae Plc Pistons
US5040454A (en) * 1988-10-21 1991-08-20 Caterpillar Inc. Piston assembly and piston member thereof having a predetermined compression height to diameter ratio
BR9005370A (pt) * 1990-10-18 1992-06-16 Metal Leve Sa Processo de fabricacao de embolo refrigerado
DE4129746C2 (de) * 1991-09-06 1994-04-14 Man B & W Diesel Ag Gebauter Kolben für Hubkolbenmaschinen
US5499572A (en) * 1993-08-26 1996-03-19 Cobble; Daniel L. Bi-tech piston
DE19846152A1 (de) * 1998-10-07 2000-04-13 Mahle Gmbh Kolben mit Kolbengrundkörper aus geschmiedetem Stahl und einem Kühlkanal
US6477941B1 (en) 1999-10-08 2002-11-12 Federal-Mogul World Wide, Inc. Dual gallery piston
DE10028926A1 (de) * 2000-06-10 2001-12-13 Mahle Gmbh Gebauter Kolben
DE10244512A1 (de) * 2002-09-25 2004-04-15 Mahle Gmbh Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor
DE102006015587A1 (de) 2006-04-04 2007-10-11 Mahle International Gmbh Oberteil eines gebauten Kolbens
DE102007044106A1 (de) * 2007-09-15 2009-03-19 Mahle International Gmbh Zweiteiliger Kolben für einen Verbrennungsmotor
DE102007050213A1 (de) * 2007-10-20 2009-04-23 Mahle International Gmbh Kolben für einen Verbrennungsmotor
US20110185889A1 (en) * 2010-02-03 2011-08-04 Florin Muscas Piston with central cooling gallery cooling feature
US9464592B2 (en) 2011-04-18 2016-10-11 Achates Power, Inc. Piston thermal management in an opposed-piston engine
US8955486B2 (en) * 2012-02-10 2015-02-17 Federal Mogul Corporation Piston with enhanced cooling gallery
WO2015168395A1 (fr) * 2014-04-30 2015-11-05 Federal-Mogul Corporation Piston en acier avec galerie remplie

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2327409A1 (fr) * 1975-10-08 1977-05-06 Wellworthy Ltd Pistons de moteur thermique

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US1539882A (en) * 1924-10-13 1925-06-02 Louis R Spencer Composite piston
US2524273A (en) * 1948-06-03 1950-10-03 Westinghouse Electric Corp Piston construction
DE800350C (de) * 1948-11-10 1950-10-30 Mahle Kg Leichtmetallkolben fuer Brennkraftmaschinen
CH311362A (de) * 1952-02-01 1955-11-30 Maybach Motorenbau Gmbh Mehrteiliger Kolben für Brennkraftmaschinen, insbesondere von Kraftfahrzeugen.
US2715052A (en) * 1953-12-23 1955-08-09 Aluminum Co Of America Collapse resistant piston
DE1055295B (de) * 1956-05-30 1959-04-16 Maybach Motorenbau Gmbh Druckoelkuehlung fuer einen mehrteiligen Zweitakt-Brennkraftmaschinen-Kolben
FR1410387A (fr) * 1964-07-30 1965-09-10 Semt Piston de machine ou analogue et ses diverses applications
US3240193A (en) * 1964-07-30 1966-03-15 Gen Motors Corp Piston and piston cooling means
GB1091513A (en) * 1965-06-11 1967-11-15 Mirrlees Nat Ltd Improvements in or relating to pistons for internal combustion engines
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US3402644A (en) * 1966-10-31 1968-09-24 Int Harvester Co Internal combustion engine piston with prestressed insert
GB1237238A (en) * 1968-10-31 1971-06-30 Hepworth & Grandage Ltd Improvements in or relating to pistons
JPS5216252B2 (fr) * 1971-08-18 1977-05-07
BE795594A (fr) * 1972-02-18 1973-08-16 Engelhard Min & Chem Procede de conduite d'une turbine et appareil
US3859786A (en) * 1972-05-25 1975-01-14 Ford Motor Co Combustor
DE2230722C3 (de) * 1972-06-23 1981-12-24 Mahle Gmbh, 7000 Stuttgart Brennkraftmaschinenkolben, insbesondere für Dieselmaschinen, mit einem Unterteil und einem mit diesem lösbar verbundenen Oberteil
JPS5814315B2 (ja) * 1972-09-07 1983-03-18 カシオケイサンキ カブシキガイシヤ ジクウケソウチ
JPS5234114A (en) * 1975-09-10 1977-03-15 Nippon Gakki Seizo Kk Cast iron piston
DE2626131C2 (de) * 1976-06-11 1982-06-03 Mahle Gmbh, 7000 Stuttgart Harteloxierter Leichtmetallkolben für Verbrennungsmotoren
DE2647250C3 (de) * 1976-10-20 1980-06-12 Mahle Gmbh, 7000 Stuttgart Verschraubter Kolben für Verbrennungsmotoren
JPS5741382Y2 (fr) * 1976-11-08 1982-09-10
DE2723619C2 (de) * 1977-05-25 1984-10-04 Karl Schmidt Gmbh, 7107 Neckarsulm Mehrteiliger, flüssigkeitsgekühlter Kolben für Brennkraftmaschinen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2327409A1 (fr) * 1975-10-08 1977-05-06 Wellworthy Ltd Pistons de moteur thermique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0985739A1 (fr) * 1998-09-10 2000-03-15 MMS Marine Motor Service Procédé pour le durcissement de têtes de piston et tête de piston
DE102006055251A1 (de) * 2006-11-23 2008-05-29 Mahle International Gmbh Zweiteiliger Kolben für einen Verbrennungsmotor
US8631736B2 (en) 2006-11-23 2014-01-21 Mahle International Gmbh Two-part piston for an internal combustion engine

Also Published As

Publication number Publication date
JPS5756060Y2 (fr) 1982-12-03
EP0007661A1 (fr) 1980-02-06
DE2832970A1 (de) 1980-02-07
JPS5519999A (en) 1980-02-13
US4356800A (en) 1982-11-02
JPS6339779B2 (fr) 1988-08-08
JPS5519999U (fr) 1980-02-07
ES244842Y (es) 1980-05-16
ES244842U (es) 1979-11-16
DE2960891D1 (en) 1981-12-10

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