COMBINATION OIL RING

PROBLEM TO BE SOLVED: To prevent anchoring between a side rail and a spacer expander of a combination oil ring.SOLUTION: The combination oil ring includes a vertical pair of side rails 11, 12 and a spacer expander 13 arranged therebetween. The spacer expander 13 includes: a plurality of upper pieces...

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Bibliographic Details
Main Authors HAMA MASAHIDE, NAKAZAWA ATSUSHI
Format Patent
LanguageEnglish
Published 04.07.2013
Subjects
ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
BLASTING
COMBUSTION ENGINES
CYLINDERS
CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
PISTONS
SEALINGS
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To prevent anchoring between a side rail and a spacer expander of a combination oil ring.SOLUTION: The combination oil ring includes a vertical pair of side rails 11, 12 and a spacer expander 13 arranged therebetween. The spacer expander 13 includes: a plurality of upper pieces 14 and lower pieces 15 alternately arranged in the peripheral direction and spaced apart in the axial direction and the peripheral direction; a coupling piece 16 coupling the adjacent upper pieces 14 and lower pieces 15; and flange sections 17, 18 that press against the side rails 11, 12 and are formed upright on an inner peripheral side end of the upper pieces 14 and the lower pieces 15. A through-hole 19 is formed in the flange sections 17, 18, wherein side rail supporting parts 14a, 15a which project out in the axial direction are formed at one portion, in the peripheral direction, of the outer peripheral side end of the upper pieces 14 and the lower pieces 15 of the spacer expander 13.
Bibliography:Application Number: JP20110279642