EP 1509712 A1 20050302 - PISTON-PIN BEARING FOR INTERNAL COMBUSTION ENGINES
Title (en)
PISTON-PIN BEARING FOR INTERNAL COMBUSTION ENGINES
Title (de)
KOLBENBOLZENLAGER FUER VERBRENNUNGSMOTOREN
Title (fr)
PALIERS D'AXE DE PISTON POUR MOTEURS A COMBUSTION INTERNE
Publication
Application
Priority
- DE 0301616 W 20030520
- DE 10222463 A 20020522
Abstract (en)
[origin: WO03098078A1] The invention relates to a piston-pin bearing for an internal combustion engine wherein a cylindrical piston pin (8) is mounted. The inventive piston-pin bearing is provided with an improved form of hub bore in comparison with prior art, significantly reducing mechanical stress in said piston and therefore resulting in a longer service life for said piston. Said form also avoids the formation of noise in the piston-pin bearing. According to the invention, this is achieved by providing the lateral surface (5) of the hub bore (2) with a highly oval shape along the entire axis of the hub in the equatorial-zenith-equatorial area of said hub, corresponding to the parameter representation of an oval x=b/2 x cos < }; y = a/2 x sin } for 0 DEG = = 180 DEG , and by providing it with a circular cylindrical shape in the equatorial-nadir-equatorial region of the hub, whereby a: large oval diameter; b = D: small oval diameter; D: diameter of the cylindrical hub; : the angle forming any particular unlimited line counter to the z axis.>
IPC 1-7
IPC 8 full level
CPC (source: EP KR US)
F16J 1/16 (2013.01 - EP KR US)
Citation (search report)
See references of WO 03098078A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 03098078 A1 20031127; BR 0311220 A 20050301; BR 0311220 B1 20140909; CN 100346093 C 20071031; CN 1656331 A 20050817; DE 10222463 A1 20031204; EP 1509712 A1 20050302; HK 1077352 A1 20060210; JP 2005526218 A 20050902; JP 4488511 B2 20100623; KR 100976642 B1 20100818; KR 20040111667 A 20041231; US 2005150374 A1 20050714; US 7107893 B2 20060919
DOCDB simple family (application)
DE 0301616 W 20030520; BR 0311220 A 20030520; CN 03811587 A 20030520; DE 10222463 A 20020522; EP 03727239 A 20030520; HK 05109099 A 20051014; JP 2004505570 A 20030520; KR 20047018740 A 20030520; US 51509804 A 20041119