EP0697513B1 - Piston composite pour moteur à combustion interne - Google Patents

Piston composite pour moteur à combustion interne Download PDF

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Publication number
EP0697513B1
EP0697513B1 EP95109581A EP95109581A EP0697513B1 EP 0697513 B1 EP0697513 B1 EP 0697513B1 EP 95109581 A EP95109581 A EP 95109581A EP 95109581 A EP95109581 A EP 95109581A EP 0697513 B1 EP0697513 B1 EP 0697513B1
Authority
EP
European Patent Office
Prior art keywords
piston
internal combustion
layer
combustion engine
solid lubricant
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 - Lifetime
Application number
EP95109581A
Other languages
German (de)
English (en)
Other versions
EP0697513A1 (fr
Inventor
Kurt Maier
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 EP0697513A1 publication Critical patent/EP0697513A1/fr
Application granted granted Critical
Publication of EP0697513B1 publication Critical patent/EP0697513B1/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
    • 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

Definitions

  • the invention relates to a built piston for internal combustion engines with the features according to the preamble of the claim.
  • Such a piston is built for internal combustion engines known from DE-PS 36 33 134.
  • this built piston with a piston body made of light metal and a piston crown made of an iron material, the arranged with the face of one on its inside ring-shaped support collar on one at the top of the lower piston part arranged annular support rib supports and by means of several parallel to the piston axis screws arranged in the area of the ring rib with the Piston lower part is connected, is the bearing surface of the Ring rib of the piston lower part of a thin, smooth and hard layer made of a highly wear-resistant material covered.
  • a layer of highly wear-resistant Material should be the softer base material of the lower piston part effective against material erosion due to fretting corrosion to be protected.
  • Such layers are relatively expensive and the application the layer, e.g. B. in the detonation spray process or due to galvanic deposition is very complex.
  • the present invention addresses the problem in a built piston for the contact surface between Piston upper and lower piston part a resistant Find layer that is particularly simple and environmentally friendly to raise and is relatively cheap.
  • Such a layer is in itself a running layer for one Piston known from DE-OS 41 33 546. However, it has not nearby, one generally considered soft and abrasion-friendly known running layer for a coating of the Contact surface of the upper and lower piston parts of a built To use pistons made of different materials, to show signs of wear due to fretting corrosion prevent. Surprisingly, it has now been found that a such layer of bonded in cured resin Solid lubricant even at very high surface pressures and short glide paths - the amplitudes of the relative movements between the upper and lower parts of the piston are smaller than 1 mm - is operational and offers effective wear protection.
  • the invention is based on a preferred, in the embodiment shown in the drawing, the one piston according to the invention in side view shows in section.
  • a piston upper part 1 with an inner annular rib 2 is over Screws 3 connected to a lower piston part 4.
  • the Screws 3 engage the ring rib 2 in threaded blind holes 5 a.
  • a layer 6 in cured Resin-bound solid lubricant, e.g. Graphite, is for example by spraying on the ring rib-like Support surface 7 of the lower piston part 4 applied.
  • the contact surfaces 8 and 9 can also be coated will.
  • the layer can also be applied by simple brushing or with the known screen printing method.
  • the layer has a thickness between 10 and 30 mm, the solid lubricant particles in a size between 1 and 10 mymeters are and the proportion of solid lubricant particles should be between 30 and 60% by weight.
  • Curable polyimide is to be used as the binder.
  • a solvent for example, N-methyl-pyrrolidone (NMP) can.
  • NMP N-methyl-pyrrolidone
  • the proportion of the solvent in the layer starting material to be applied is about 50% by weight.
  • the temperature for curing is 150 degrees to 220 Degrees Celsius, and curing takes place in between 10 and 30 minutes.
  • the piston has a layer for the bearing surface found between the upper and lower piston parts, the is relatively cheap and can be applied with little effort can.

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 (2)

  1. Piston composite pour moteurs à combustion interne, comportant une partie supérieure en matériau ferreux et une partie inférieure en métal léger ou en fonte qui sont assemblées axialement par vis, appuyées l'une contre l'autre par des surfaces d'appui du genre nervure annulaire, au moins une de ces surfaces d'appui étant revêtue d'une couche, caractérisé par le fait que la couche (6) est constituée de matière lubrifiante solide liée dans une résine durcie.
  2. Piston composite selon la revendication 1, caractérisé par le fait que comme matière lubrifiante solide est utilisé du graphite.
EP95109581A 1994-08-19 1995-06-21 Piston composite pour moteur à combustion interne Expired - Lifetime EP0697513B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4429489A DE4429489A1 (de) 1994-08-19 1994-08-19 Gebauter Kolben für Verbrennungsmotoren
DE4429489 1994-08-19

Publications (2)

Publication Number Publication Date
EP0697513A1 EP0697513A1 (fr) 1996-02-21
EP0697513B1 true EP0697513B1 (fr) 1998-09-23

Family

ID=6526118

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95109581A Expired - Lifetime EP0697513B1 (fr) 1994-08-19 1995-06-21 Piston composite pour moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP0697513B1 (fr)
JP (1) JP3723608B2 (fr)
DE (2) DE4429489A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19642109A1 (de) * 1996-10-12 1998-04-16 Mahle Gmbh Gebauter Kolben
FI106396B (fi) * 1998-11-19 2001-01-31 Wecometal Oy Polttomoottorin mäntä
DE19855134A1 (de) * 1998-11-30 2000-05-31 Mahle Gmbh Gebauter Kolben
DE19910582A1 (de) * 1999-03-10 2000-09-28 Mahle Gmbh Gebauter Kolben
DE19919725A1 (de) * 1999-04-30 2000-11-02 Mahle Gmbh Kolbenmotor mit einem Zylinder aus Leichtmetall
GB2353739A (en) * 1999-09-04 2001-03-07 Federal Mogul Technology Ltd Applying a low friction and low wear coating
DE19943945A1 (de) * 1999-09-14 2001-03-22 Federal Mogul Wiesbaden Gmbh Kolbenkopf
DE10015352C1 (de) * 2000-03-28 2001-07-19 Peter Rong Gebauter Kolben
DE10210570A1 (de) * 2002-03-09 2003-09-18 Mahle Gmbh Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor
DE102004027974A1 (de) * 2004-06-08 2005-12-29 Mahle Gmbh Gebauter Kolben und Verfahren zur Vermeidung von Beschädigungen in Kontakt zueinander stehender Flächen des Oberteiles und des Unterteiles des Kolbens
DE102006055251A1 (de) * 2006-11-23 2008-05-29 Mahle International Gmbh Zweiteiliger Kolben für einen Verbrennungsmotor
CN111102095B (zh) * 2019-12-20 2021-05-28 中国北方发动机研究所(天津) 一种低散热组合结构活塞

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7925700U1 (de) * 1979-09-11 1986-02-06 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Kolben für eine Brennkraftmaschine
DE3240224A1 (de) * 1982-09-08 1984-03-08 Alcan Aluminiumwerk Nürnberg GmbH, 6000 Frankfurt Kolben fuer brennkraftmaschinen
DE3347292C2 (de) * 1983-12-28 1986-06-19 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Ölgekühlter, gebauter Kolben für Brennkraftmaschinen
DE3633134A1 (de) 1986-09-30 1988-04-07 Man B & W Diesel Gmbh Gebauter kolben fuer brennkraftmaschinen
US5029562A (en) * 1989-12-05 1991-07-09 Adiabatics, Inc. Hybrid piston for high temperature engine
DE4029315A1 (de) * 1990-09-15 1992-03-19 Mahle Gmbh Tauchkolben fuer verbrennungsmotoren
DE4133546C2 (de) 1991-10-10 2000-12-07 Mahle Gmbh Kolben-Zylinderanordnung eines Verbrennungsmotors

Also Published As

Publication number Publication date
JPH0868358A (ja) 1996-03-12
DE59503675D1 (de) 1998-10-29
DE4429489A1 (de) 1996-02-22
JP3723608B2 (ja) 2005-12-07
EP0697513A1 (fr) 1996-02-21

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