DE2655712B2 - , Piston with coated sliding surface for internal combustion engines - Google Patents

, Piston with coated sliding surface for internal combustion engines

Info

Publication number
DE2655712B2
DE2655712B2 DE19762655712 DE2655712A DE2655712B2 DE 2655712 B2 DE2655712 B2 DE 2655712B2 DE 19762655712 DE19762655712 DE 19762655712 DE 2655712 A DE2655712 A DE 2655712A DE 2655712 B2 DE2655712 B2 DE 2655712B2
Authority
DE
Germany
Prior art keywords
piston
internal combustion
combustion engines
sliding surface
coated
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Withdrawn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
DE2655712A1 (en
Inventor
Helmut 7070 Schwaebisch Gmuend Huebner
Albrecht Dr.Rer.Nat. 7060 Schorndorf 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 FR7737059A priority patent/FR2373684A1/en
Priority to GB5110877A priority patent/GB1561948A/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Withdrawn legal-status Critical Current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

Description

Die Erfindung betrifft laufflächenbeschichtete Kolben für Verbrennungsmotoren nach dem Oberbegriff des Anspruchs 1.The invention relates to running surface-coated pistons for internal combustion engines according to the preamble of Claim 1.

Derartige Laufflächenbeschichtungen sollen im Motorbetrieb als Ein- und Notlaufhilfe dienen. Als Beschichtungsmaterial werden z. B. verwendet Blei, Zinn, Blei-Zinn-Legierungen, harzgebundener Graphit oder ganz allgemein Kunststoffe bzw. Kunstharze mit eingebundenen speziellen Gleitmitteln.Running surface coatings of this type are intended to serve as a run-in and emergency run-in aid when the engine is running. as Coating material are z. B. uses lead, tin, lead-tin alloys, resin-bonded graphite or more generally plastics or synthetic resins with integrated special lubricants.

Die Laufflächenschichten sollen äußerst dünn sein, d. ii. Dicken im Bereich von nur etwa 1 bis 5 μπι aufweisen.The tread layers should be extremely thin; ii. Thicknesses in the range of only about 1 to 5 μm exhibit.

Diese Dicken lassen sich bei den üblicherweise in Bädern galvanisch oder stromlos aufgebrachten Blei-, Zhin- oder Blei-Zinn-Schichten relativ einfach und sicher realisieren. Nochweitgehend ungelöst ist dies jedoch bei Schichten aus Kunststoffen oder Kunstharzen mit eingebundenen Gleitmitteln. Diese Schichten werden nämlich bisher meist im Spritzverfahren auf die zu beschichtenden Laufflächenbereiche des Kolbens aufgebracht. Darüber hinaus ist es aus einem unter dem Titel Emwicklungslinien in der Kraftfahrzeugtechnik, Verlag TÜV Rheinland wiedergegebenen Bericht über das 4. Statusseminar »Kraftfahrzeug- und Straßenverkehrstechnik« des Bunddesministeriums für Forschung und Technogolie (BMFT) und die 2. Jahrestagung der VDI-Gesellschaft Fahrzeugtechnik, einer Gemeinschaftsveranstaltung anläßlich des 75jährigen Bestehens des Instituts für Landverkehrsmittel der Techn. Universität Berlin vom 10.—12.11.1976 in Berlin über den Vortrag »Konstruktive Beiträge zum Langzeitauto von Dipl. Ing. H. K. G e i s s e η, Seite 649 ff, insbesondere Seite 651, drittletzter Absatz, auch bekannt, Kunststoffschichten durch Tauchen oder Streichen aufzubringen.These thicknesses can be determined in the case of the lead, Realize tin or lead-tin layers relatively easily and safely. This is still largely unresolved however, for layers made of plastics or synthetic resins with integrated lubricants. These layers have so far mostly been sprayed onto the running surface areas of the piston to be coated upset. In addition, it is from a development under the title of development lines in automotive engineering, The report published by the TÜV Rheinland publishing company on the 4th status seminar "Motor vehicle and road traffic technology" of the Federal Ministry for Research and Technology (BMFT) and the 2nd annual meeting of the VDI-Gesellschaft Fahrzeugtechnik, a joint event On the occasion of the 75th anniversary of the Institute for Land Transportation of the Techn. University of Berlin from November 10th to 12th, 1976 in Berlin the lecture »Constructive contributions to the long-term car by Dipl. Ing. H. K. Ge i s s e η, page 649 ff, in particular Page 651, third to last paragraph, also known, plastic layers by dipping or brushing to raise.

ίο Die Kunststoffe lassen sich jedoch mit diesem Verfahren bisher nicht in der gewünschten geringen Schichtdicke großtechnisch aufbringen. Außerdem ist die Einhaltung einer überall gleichen Dicke mit Abweichungen von weniger als etwa 1 μπι mit diesen bekannten Verfahren auch nicht möglich. Ferner kommt noch hinzu, daß Laufflächenbereiche oder Ausnehmungen in der Lauffläche, wie z. B. die Kolbencirgnuten oder Bolzenaugen-Öffnungen, die nicht beschichtet werden sollen, jeweils beim Beschichten besonders abgedeckt sein müssen.ίο The plastics can be used with this Up to now, the process has not been applied on an industrial scale in the desired small layer thickness. Also is compliance with a thickness that is the same everywhere with deviations of less than about 1 μm with these known processes are also not possible. Furthermore, there is also the fact that tread areas or recesses in the tread, such as B. the Kolbencirgnuten or bolt eye openings that are not to be coated, especially when coating must be covered.

Den vorgenannten Nachteilen abzuhelfen, ist Aufgabe der Erfindung.The object of the invention is to remedy the aforementioned disadvantages.

Gelöst wird sie dadurch, daß bei einem Kolben der eingangs genannten Gattung der aufgebrachte Überzug aufgewalzt ist.It is solved by the fact that the coating applied to a piston of the type mentioned at the beginning is rolled on.

Das Beschichten des Kolbens geschieht dabei im Prinzip nach dem an sich bekannten Offset-Druckverfahren.
Die wesentlichen Vorteile eines so beschichtetenThe piston is coated in principle using the offset printing process known per se.
The main advantages of such a coated

Jo Kolbens bestehen darin, daß eine gleichmäßig dünne Gleitlackschicht im Bereich zwischen 1 und 5 μπι aufgebracht werden kann und daß diese leicht auf bestimmte Bereiche der Kolbenfläche begrenzt sein kann. Insbesondere entfällt das bisher erforderlicheJo pistons consist in that an evenly thin Lubricating varnish layer in the range between 1 and 5 μπι can be applied and that this is easy on certain areas of the piston surface can be limited. In particular, what was previously required is no longer necessary

Abdecken nicht zu beschichtender Laufflächenbereiche.Covering tread areas that are not to be coated. Es ist z. B. möglich, einzelne Ringbänder aus GleitlackIt is Z. B. possible, individual ring bands made of bonded varnish

auf die Kolbenfläche oder auch nur die Kolbenbereiche in Druck-Gegendruck-Richtung zu beschichten.on the piston surface or just the piston areas to be coated in the pressure-counter-pressure direction.

Von den bekannten Gleitlacken eignen sich allAll of the well-known anti-friction coatings are suitable

-to diejenigen, die eine flächen- und dickengetreue Übertragung über rotierende Walzen erlauben.-to those who want a true area and thickness transfer Allow over rotating rollers.

Claims (2)

Patentansprüche:Patent claims: 1. Laufflächenbeschichteter Kolben für Verbrennungsmotoren mit einem gleichmäßig dünnen Oberzug aus Gleitlacke dadurch gekennzeichnet, daß der Oberzug aufgewalzt ist.1. Coated piston for internal combustion engines with an evenly thin Upper coat made of bonded varnish characterized by that the upper cable is rolled on. 2. Kolben nach Anspruch 1, dadurch gekennzeichnet, daß die Dicke des Gleitlackfiberzüges 1 bis 5 μΐπ, vorzugsweise 3 bis 5 μΐη beträgt2. Piston according to claim 1, characterized in that the thickness of the Gleitlackfiberzüges 1 to 5 μΐπ, is preferably 3 to 5 μm
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
FR7737059A FR2373684A1 (en) 1976-12-09 1977-12-08 PISTON COVERED WITH A REAR COATING FOR INTERNAL COMBUSTION ENGINES
GB5110877A GB1561948A (en) 1976-12-09 1977-12-08 Working surface coated pistons for internal combustion enggines

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 DE2655712A1 (en) 1978-06-22
DE2655712B2 true 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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4113773A1 (en) * 1990-07-23 1992-01-30 Alcan Gmbh Piston with reduced free play for internal combustion engine - has specific areas coated with low friction graphite and polymer dispersion and non-coated areas which are set back compared to coated areas

Families Citing this family (9)

* 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
JP2531224B2 (en) * 1988-01-29 1996-09-04 トヨタ自動車株式会社 Film formation method on piston skirt
US5469777A (en) * 1994-07-05 1995-11-28 Ford Motor Company Piston assembly having abradable coating
DE19919725A1 (en) * 1999-04-30 2000-11-02 Mahle Gmbh Piston engine with a cylinder made of light metal
FR2870320B1 (en) * 2004-05-11 2006-06-30 Peugeot Citroen Automobiles Sa METHOD FOR COATING DRY LUBRICANT FILM WITH CONVEX SURFACE
WO2005114038A2 (en) * 2004-05-11 2005-12-01 Peugeot Citroen Automobiles Method of coating a surface with a dry lubricating film

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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4113773A1 (en) * 1990-07-23 1992-01-30 Alcan Gmbh Piston with reduced free play for internal combustion engine - has specific areas coated with low friction graphite and polymer dispersion and non-coated areas which are set back compared to coated areas

Also Published As

Publication number Publication date
DE2655712A1 (en) 1978-06-22
GB1561948A (en) 1980-03-05
FR2373684A1 (en) 1978-07-07
ES464868A1 (en) 1978-08-01

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