DE2655712A1 - TREAD-COATED PISTON FOR COMBUSTION ENGINES - Google Patents

TREAD-COATED PISTON FOR COMBUSTION ENGINES

Info

Publication number
DE2655712A1
DE2655712A1 DE19762655712 DE2655712A DE2655712A1 DE 2655712 A1 DE2655712 A1 DE 2655712A1 DE 19762655712 DE19762655712 DE 19762655712 DE 2655712 A DE2655712 A DE 2655712A DE 2655712 A1 DE2655712 A1 DE 2655712A1
Authority
DE
Germany
Prior art keywords
tread
piston
combustion engines
coated
coated piston
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.)
Withdrawn
Application number
DE19762655712
Other languages
German (de)
Other versions
DE2655712B2 (en
Inventor
Helmut Huebner
Albrecht Dr Rer Nat Ostermann
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
Priority to DE19762655712 priority Critical patent/DE2655712B2/en
Priority to ES464868A priority patent/ES464868A1/en
Priority to GB5110877A priority patent/GB1561948A/en
Priority to FR7737059A priority patent/FR2373684A1/en
Publication of DE2655712A1 publication Critical patent/DE2655712A1/en
Publication of DE2655712B2 publication Critical patent/DE2655712B2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N15/00—Lubrication with substances other than oil or grease; Lubrication characterised by the use of particular lubricants in particular apparatus or conditions
    • 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 
    • F02F3/10—Pistons  having surface coverings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/08—Constructional features providing for lubrication
    • 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
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/08—Ceramics; Oxides
    • F05C2203/0865—Oxide ceramics
    • F05C2203/0882—Carbon, e.g. graphite

Landscapes

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

Description

«Ο«Ο

MAHLE GMBH, Pragstrasse 26-46, 7000 STUTTGART 50MAHLE GMBH, Pragstrasse 26-46, 7000 STUTTGART 50

Laufflächenbeschichteter Kolben für VerbrennungsmotorePiston with coated sliding surface for internal combustion engines

Die Erfindung betrifft laufflächenbeschichtete Kolben für Verbrennungsmotore .The invention relates to pistons with a bearing surface coating for internal combustion engines .

Derartige Laufflächenbeschichtungen sollen im Motorbetrieb als Ein- und Notlaufhilfe dienen. Als Beschichtungsmaterial werden z.B. verwendet Blei, Zinn, Blei-Zinn-Legierungen, harzgebundenes Graphit oder ganz allgemein Kunststoffe bzw. Kunstharze mit eingebundenen speziellen Gleitmitteln.Such tread coatings should be used in engine operation as Serve entry and emergency running aid. Can be used as a coating material e.g. uses lead, tin, lead-tin alloys, resin-bonded graphite or, in general, plastics or synthetic resins with embedded special lubricants.

Die Laufflächenschichten sollen äußerst dünn sein, d.h. Dicken im Bereich von nur etwa 1-5 ,um aufweisen.The tread layers should be extremely thin, i.e. thick in the range of only about 1-5 µm.

Diese Dicken lassen sich bei den üblicherweise in Bädern galvanisch oder stromlos aufgebrachten Blei, Zinn, oder Blei-Zinn-Schichten relativ einfach und sicher realisieren. Noch weitgehend ungelöst ist dies jedoch bei Schichten aus Kunststoffen oder Kunstharzen mit eingebundenen Gleitmitteln. Diese Schichten werden nämlich bisher im Spritzverfahren auf die zu beschichtenden Laufflächenbereiche des Kolbens aufgebracht. Hierdurch lassen sich jedoch die gewünschten geringen Schichtdicken großtechnisch nicht erreichen. Außerdem ist die Einhaltung einer überall gleichen Dicke mit Abweichungen von weniger als etwa 1 um nicht möglich. Ferner kommt hinzu, daß Laufflächenbereiche oder Ausnehmungen in der LaufflächeThese thicknesses can be electroplated in the case of the ones usually used in baths or lead, tin or lead-tin layers applied without electricity can be implemented relatively easily and safely. Still largely However, this has not been resolved in the case of layers made of plastics or synthetic resins with integrated lubricants. These layers are namely so far in the spray process on the to be coated Tread areas of the piston applied. In this way, however, the desired small layer thicknesses can be achieved on an industrial scale not reach. In addition, it is not possible to maintain a thickness that is the same everywhere with deviations of less than approximately 1 μm possible. In addition, there are tread areas or recesses in the tread

5P-PF/FL5P-PF / FL

809825/002-8809825 / 002-8

wie z.B. die Kolbenringnuten oder Bolzenaugen-Öffnungen, die nicht beschichtet werden sollen, jeweils beim Beschichten besonders abgedeckt sein müssen.such as the piston ring grooves or bolt eye openings that should not be coated, must be specially covered when coating.

Hier Abhilfe zu schaffen, ist Aufgabe der vorliegenden Erfindung.The object of the present invention is to remedy this situation.

Gelöst wird diese Aufgabe dadurch, daß der Kolben an den zu beschichtenden Flächen mit einem aufgewalzten Gleitlack versehen ist.This object is achieved in that the piston to the to be coated Surfaces is provided with a rolled-on lubricant varnish.

Dieser vorzugsweise auf Kunstharz- oder Kunststoffbasis aufgebaute Gleitlack wird auf die zu beschichtenden Laufflächenbereiche des Kolbens aufgewalzt. Im Prinzip wird dabei so vorgegangen wie bei dem allgemein bekannten Offset-Druckverfahren. This is preferably based on synthetic resin or plastic Lubricating varnish is rolled onto the running surface areas of the piston to be coated. In principle it will be like this proceeded as in the well-known offset printing process.

Die wesentlichen "Vorteile eines so beschichteten Kolbens bestehen darin, daß eine gleichmäßig dünne Gleitlackschicht im Bereich zwischen 1 und 5 jam aufgebracht werden kann und daß diese leicht auf bestimmte Bereiche der Kolbenfläche begrenzt sein kann. Insbesondere entfällt das bisher erforderliche Ab-1 decken nicht zu beschichtender Laufflächen-Bereiche. Es ist z.B. möglich, einzelne Ringbänder aus Gleitlack auf die Kolbenfläche oder auch nur die Kolbenbereiche in Druck- Gegendruck-Richtung zu beschichten.The essential "benefits of a thus coated piston are that a uniformly thin anti-friction varnish in the range between 1 and 5 can be jam applied and that this can easily be limited to certain areas of the piston surface. In particular, eliminates the waste 1 previously required to cover not It is possible, for example, to coat individual ring bands made of anti-friction varnish on the piston surface or only the piston areas in the pressure-counter-pressure direction.

Von den bekannten Gleitlacken eignen sich all diejenigen, die eine flächen- und dickengetreue Übertragung über rotierende Walzen erlauben.Of the well-known anti-friction coatings, all those are suitable, which allow a transfer of the same area and thickness via rotating Allow rolling.

809 8 25/0028809 8 25/0028

Claims (3)

A η s ρ r ü c h e A η s ρ r ü c he ί1.) Laufflächenbeschichteter Kolben für Verbrennungsmotore ^ gekennzeichnet durch einen gleichmäßig dünnen Überzug aus GIeitlack.ί1.) Piston with liner for internal combustion engines ^ characterized by an evenly thin coating of lubricant varnish. 2. Kolben nach Anspruch 1, dadurch gekennzeichnet, daß der Überzug ein aufgewalzter Gleitlack ist.2. Piston according to claim 1, characterized in that that the coating is a rolled-on lubricant varnish. 3. Kolben nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Dicke des Gleitlackes 1-5 jum, vorzugsweise 3 - 5jum, beträgt.3. Piston according to claim 1 or 2, characterized in that the thickness of the lubricating varnish 1-5 jum, preferably 3 to 5 µm. 809825/0028809825/0028 ORIGINAL iMSPECTEOORIGINAL iMSPECTEO
DE19762655712 1976-12-09 1976-12-09 , Piston with coated sliding surface for internal combustion engines Withdrawn DE2655712B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE19762655712 DE2655712B2 (en) 1976-12-09 1976-12-09 , Piston with coated sliding surface for internal combustion engines
ES464868A ES464868A1 (en) 1976-12-09 1977-12-07 Working surface coated pistons for internal combustion enggines
GB5110877A GB1561948A (en) 1976-12-09 1977-12-08 Working surface coated pistons for internal combustion enggines
FR7737059A FR2373684A1 (en) 1976-12-09 1977-12-08 PISTON COVERED WITH A REAR COATING FOR INTERNAL COMBUSTION ENGINES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762655712 DE2655712B2 (en) 1976-12-09 1976-12-09 , Piston with coated sliding surface for internal combustion engines

Publications (2)

Publication Number Publication Date
DE2655712A1 true DE2655712A1 (en) 1978-06-22
DE2655712B2 DE2655712B2 (en) 1979-06-21

Family

ID=5995032

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19762655712 Withdrawn DE2655712B2 (en) 1976-12-09 1976-12-09 , Piston with coated sliding surface for internal combustion engines

Country Status (4)

Country Link
DE (1) DE2655712B2 (en)
ES (1) ES464868A1 (en)
FR (1) FR2373684A1 (en)
GB (1) GB1561948A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01193068A (en) * 1988-01-29 1989-08-03 Toyota Motor Corp Formation of cover to piston skirt
DE19919725A1 (en) * 1999-04-30 2000-11-02 Mahle Gmbh Piston engine with a cylinder made of light metal

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3047978A1 (en) * 1980-12-19 1982-07-29 Wabco Fahrzeugbremsen Gmbh, 3000 Hannover RUNNING AREAS IN PISTON MACHINE
GB2129523A (en) * 1982-10-20 1984-05-16 Ae Plc Composite pistons
GB2162614B (en) * 1984-08-03 1987-10-21 Ae Plc Bearing surfaces for internal combustion engine pistons
GB8419928D0 (en) * 1984-08-04 1984-09-05 Ae Plc Pistons for ic engines
DE4113773C2 (en) * 1990-07-23 1994-11-03 Alcan Gmbh Pistons for internal combustion engines
US5469777A (en) * 1994-07-05 1995-11-28 Ford Motor Company Piston assembly having abradable coating
EP1745205A2 (en) * 2004-05-11 2007-01-24 Peugeot Citroën Automobiles S.A. Method of coating a surface with a dry lubricating film
FR2870320B1 (en) * 2004-05-11 2006-06-30 Peugeot Citroen Automobiles Sa METHOD FOR COATING DRY LUBRICANT FILM WITH CONVEX SURFACE

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1362154A (en) * 1963-06-20 1964-05-29 Hepworth & Grandage Ltd Surface coating for piston rings of engines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01193068A (en) * 1988-01-29 1989-08-03 Toyota Motor Corp Formation of cover to piston skirt
DE19919725A1 (en) * 1999-04-30 2000-11-02 Mahle Gmbh Piston engine with a cylinder made of light metal
US6546922B1 (en) 1999-04-30 2003-04-15 Mahle Gmbh Piston engine with light-alloy cylinder

Also Published As

Publication number Publication date
GB1561948A (en) 1980-03-05
FR2373684A1 (en) 1978-07-07
DE2655712B2 (en) 1979-06-21
ES464868A1 (en) 1978-08-01

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