Cylinder liner with a wear resistant layer

Zylinderlaufbuchse mit einer Verschleißschutzschicht

Abstract

The cylinder liner made of alloyed or non-alloyed cast iron for a piston with a piston ring system has a protective layer (21) which reduces wear within its upper region (the region swept by the top piston ring when the piston is close to top dead centre). The layer (21) is made of a material with a Rockwell hardness of at least HRC=60, a porosity below 1%, covers the liner surface (11) over a distance equal to 5-15% of the piston dia., and commences half the piston ring width above the top dead centre position of the top piston ring (7). The layer whose thickness varies from 0.03-0.5 mm. is flush with the rest of the surface (11).

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Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    DE-3520984-C1February 05, 1987Man B & W Diesel GmbhProcess for producing a wear-protection layer on a cylinder bore wall
    DE-3636853-A1May 07, 1987Mazda MotorSeitengehaeuse fuer einen drehkolbenmotor und verfahren zu dessen herstellung

NO-Patent Citations (0)

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Cited By (12)

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    DE-102009004389-A1July 15, 2010Daimler AgCylinder liner for reciprocating piston-type internal combustion engine, has piston ring system sealed between work space and crank case, where liner is formed from ductile matrix with embedded nano-particles in spandrel areas
    DE-10302107-A1July 29, 2004Fuchs Technology AgZylinderoberfläche
    DE-10355685-A1July 14, 2005Gehring Gmbh & Co.Kg.Werkstück mit einer als Zylinder ausgebildeten tribologisch beanspruchbaren Fläche und Verfahren zu deren Herstellung
    DE-10355685-B4May 20, 2009Gehring Gmbh & Co.Kg.Werkstück mit einer als Zylinder ausgebildeten tribologisch beanspruchbaren Fläche und Verfahren zu deren Herstellung
    EP-0677652-A1October 18, 1995Yamaha Hatsudoki Kabushiki KaishaLinerless engine cylinder block
    EP-0719917-B1March 22, 2000Yamaha Hatsudoki Kabushiki KaishaZylindereinheit und Verfahren zur Formung ihrer Gleitfläche
    EP-0816660-A1January 07, 1998KS Aluminium-Technologie AktiengesellschaftChemise pour cylindre
    EP-1441157-A1July 28, 2004Fuchs Technology AGZylinderoberfläche
    GB-2361982-ANovember 07, 2001Man B & W Diesel AsReciprocating piston engine
    GB-2361982-BJuly 10, 2002Man B & W Diesel AsReciprocating-piston engine
    WO-0040850-A1July 13, 2000Man B & W Diesel A/SMoteur a piston alternatif
    WO-02061153-A1August 08, 2002Mahle GmbhMethod for pre-treating a ring support prior to the «alfin» process