Title:
PISTON RING
Document Type and Number:
WIPO Patent Application WO/2015/199183
Kind Code:
A9
Abstract:
In order to provide a piston ring that has excellent scuffing resistance and abrasion resistance, even when used in harsh environments wherein pressure and thermal load are increased, and in order to provide a piston ring that can also avoid edge loading, a first curved surface of an outer peripheral sliding surface according to the present invention protrudes to the outside in a cross-section that passes through the central axis of a piston ring and that is parallel to said central axis, and the radius of curvature of said first curved surface continuously increases or decreases from a crank chamber side to a combustion chamber side.
Inventors:
KAWANISHI MINORU (JP)
KAKEGAWA SATORU (JP)
SHIMIZU HIROSHI (JP)
KAKEGAWA SATORU (JP)
SHIMIZU HIROSHI (JP)
Application Number:
PCT/JP2015/068368
Publication Date:
September 01, 2016
Filing Date:
June 25, 2015
Export Citation:
Assignee:
KK RIKEN (JP)
International Classes:
F16J9/20; F02F5/00
Attorney, Agent or Firm:
TAKAISHI Kitsuma (JP)
Kitsuma Takaishi (JP)
Kitsuma Takaishi (JP)
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