DE2743512A1 - IC engine piston suppressing noise - has chromium plated rim ring held with heat resistant expansion layer - Google Patents

IC engine piston suppressing noise - has chromium plated rim ring held with heat resistant expansion layer

Info

Publication number
DE2743512A1
DE2743512A1 DE19772743512 DE2743512A DE2743512A1 DE 2743512 A1 DE2743512 A1 DE 2743512A1 DE 19772743512 DE19772743512 DE 19772743512 DE 2743512 A DE2743512 A DE 2743512A DE 2743512 A1 DE2743512 A1 DE 2743512A1
Authority
DE
Germany
Prior art keywords
piston
chromium plated
heat resistant
engine piston
expansion layer
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.)
Pending
Application number
DE19772743512
Other languages
German (de)
Inventor
Eugen Stump
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19772743512 priority Critical patent/DE2743512A1/en
Publication of DE2743512A1 publication Critical patent/DE2743512A1/en
Pending legal-status Critical Current

Links

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 
    • F02F3/10—Pistons  having surface coverings
    • F02F3/12—Pistons  having surface coverings on piston heads
    • 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
    • F16J1/02—Bearing surfaces
    • 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
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/12—Details
    • F16J9/22—Rings for preventing wear of grooves or like seatings
    • 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
    • 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
    • F05C2253/00—Other material characteristics; Treatment of material
    • F05C2253/16—Fibres

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)

Abstract

The internal combustion engine is designed to reduce noise in cold conditions when the piston tilts. Cavitation in the cooling liquid caused by cylinder wall vibrations and piston tilting is suppressed. The piston is designed to prevent any such noises and cavitation effect. The guide ring for the internal combustion engine piston is continuous and it is held on the top edge rim of piston with minimum play. The expansion of light alloy piston is elastically accommodated by intermediate layer of glass fibre. The steel ring can be chromium plated on its external surface.

Description

Führungsring Guide ring

Der Kolben für den Verbrennungsmotor im Fahrzeug, ursprünglich aus Grauguss, wurde mit wachsender Schnelläufigkeit und Wärmebelastung größtenteils auf Leichtmetall umgestellt, welches wiederum aus Geräuschgründen das Einsetzen von dehnungshemmenden Stahleinlagen für den Kolbenschaft erforderte.The piston for the internal combustion engine in the vehicle, originally from Gray cast iron, became largely with increasing speed and thermal stress converted to light metal, which in turn requires the use of noise for reasons of noise of expansion-inhibiting steel inserts for the piston skirt.

Dieser mußte dadurch vom Kolbenkopf durch Querschlitze getrennt werden, damit sich dieser entsprechend den höheren Betriebstemperaturen dehnen kann, unabhängig vom Kolbenschaft.This had to be separated from the piston head by cross slots, so that it can expand according to the higher operating temperatures, independently from the piston skirt.

Die Dehnungsdifferenz zum Zylinder würde auch am Kolbenkopf entsprechende Maßnahmen erfordern, wofür bis jetzt keine Lösung bekannt geworden ist. Die notwendigen Spiele in kalten Zustand des Kolbenkopfes betragen für die üblichen Fahrzeugmotoren bis zu 1 mm, welches bei Vollast nahezu aufgebraucht wird. Daraus entstehen aber folgende Nachteile: a) Kippen des Kolbens im kalten Zustand mit Geruschbildung im Zylinder b) Kavitation beim flüssigkeitsgekühlten zylinder durch Wandschwingungen, angefacht vom Anschlagen des Kolbens beim Kippvorgang c) Der Schrägstellung des Kolbens müssen die Kolbenringe durch Ballung ihrer Sueeren Tragfläche Rechnung tragen, welches linienförmiges Tragbild verursacht und die Gasundichte vergrößert d) Die thermische, hydralllische und mechanische weanspruchung des ersten Kolbenringes ist bestimmend für die Laufzeit des rotors, weil diese mehrfach hoher ist als bei den übrigen Ringen.The difference in expansion to the cylinder would also correspond to the piston head Requires measures for which no solution has been known up to now. The necessary Games in the cold state of the piston head amount to normal vehicle engines up to 1 mm, which is almost used up at full load. But from this arise the following disadvantages: a) Tilting of the piston when cold with formation of noise in the Cylinder b) cavitation in the liquid-cooled cylinder due to wall vibrations, fanned by hitting the piston during the tilting process c) The inclination of the Pistons must accommodate the piston rings by bulging their Sueeren wing, which causes the linear contact pattern and increases the gas leakage d) The thermal, hydraulic and mechanical stress on the first piston ring is decisive for the running time of the rotor because it is several times higher than for the rest of the rings.

Diese grundsätzlichen Mängel sollen durch den "Führungsring" gemildert werden.These fundamental deficiencies are intended to be alleviated by the "guide ring" will.

Der ungeteilte Stahlring a) ist im Feuersteg des Kolbens angeordnet und kann mit kleinstem Spiel eingebaut werden, weil die Dehnung des Leichtmetallkolbens elastisch von einer Zwischenschicht aus Glasfaser o.ä. bedingt wärmefestem Werkstoff aufgenommen wird.The undivided steel ring a) is arranged in the top land of the piston and can be installed with the smallest clearance because of the expansion of the light metal piston elastic from an intermediate layer of glass fiber or similar conditionally heat-resistant material is recorded.

Der Ring b ist durch das Alfin-Verfahren mit dem Rolbenkörper wärmeleitend verbunden, sodaß die in diesem Dereich anfallende Wärme auf den kürzesten eg zum Kolbenring und zur Zylinderwand gelangt.The ring b is thermally conductive with the roller body due to the Alfin process connected, so that the heat generated in this area on the shortest eg to the Piston ring and reaches the cylinder wall.

L e e r s e i t eL e r s e i t e

Claims (1)

Schutzrechtsansprüche, dadurch gekennzeichnet, daß 1) ein ungeteilter Stahlring a) elastisch im Feuersteg des Kolbens gelagert ist und daher mit geringstem Spiel eingebaut werden kann 2) die elastische und isolierende Zwischenschicht au Glasfasergeflecht o.ä. besteht 3) der Stahlring a) außen verchromt ist.Property right claims, characterized in that 1) an undivided Steel ring a) is elastically mounted in the top land of the piston and therefore with the lowest Play can be built in 2) the elastic and insulating intermediate layer au Glass fiber braid or similar consists of 3) the steel ring a) is chrome-plated on the outside.
DE19772743512 1977-08-27 1977-08-27 IC engine piston suppressing noise - has chromium plated rim ring held with heat resistant expansion layer Pending DE2743512A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19772743512 DE2743512A1 (en) 1977-08-27 1977-08-27 IC engine piston suppressing noise - has chromium plated rim ring held with heat resistant expansion layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772743512 DE2743512A1 (en) 1977-08-27 1977-08-27 IC engine piston suppressing noise - has chromium plated rim ring held with heat resistant expansion layer

Publications (1)

Publication Number Publication Date
DE2743512A1 true DE2743512A1 (en) 1979-03-01

Family

ID=6020054

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772743512 Pending DE2743512A1 (en) 1977-08-27 1977-08-27 IC engine piston suppressing noise - has chromium plated rim ring held with heat resistant expansion layer

Country Status (1)

Country Link
DE (1) DE2743512A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2513153A1 (en) * 1981-09-22 1983-03-25 Ae Plc PISTON FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR MANUFACTURING THE SAME
EP0084385A1 (en) * 1982-01-20 1983-07-27 KOLBENSCHMIDT Aktiengesellschaft Light-metal piston
EP0110064A1 (en) * 1982-10-09 1984-06-13 Toyota Jidosha Kabushiki Kaisha Heat-resistant light alloy articles and method of manufacturing same
EP0592179A1 (en) * 1992-10-06 1994-04-13 Metalock (Singapore) Limited Reconditioning engine parts
WO2007115790A1 (en) * 2006-04-08 2007-10-18 Ks Kolbenschmidt Gmbh Piston for an internal combustion engine having two ring grooves, wherein one ring groove has a ring carrier

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2513153A1 (en) * 1981-09-22 1983-03-25 Ae Plc PISTON FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR MANUFACTURING THE SAME
EP0084385A1 (en) * 1982-01-20 1983-07-27 KOLBENSCHMIDT Aktiengesellschaft Light-metal piston
EP0110064A1 (en) * 1982-10-09 1984-06-13 Toyota Jidosha Kabushiki Kaisha Heat-resistant light alloy articles and method of manufacturing same
EP0592179A1 (en) * 1992-10-06 1994-04-13 Metalock (Singapore) Limited Reconditioning engine parts
WO2007115790A1 (en) * 2006-04-08 2007-10-18 Ks Kolbenschmidt Gmbh Piston for an internal combustion engine having two ring grooves, wherein one ring groove has a ring carrier

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Legal Events

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OHJ Non-payment of the annual fee