Title:
ピストンリング
Document Type and Number:
Japanese Patent JP6496578
Kind Code:
B2
Abstract:
Provided is a piston ring excellent in peeling resistance, wear resistance, and thermal conductivity. A piston ring 1 includes: an annular main body 2 having a pair of side faces 2a and 2b, an outer peripheral face 2d, and an inner peripheral face 2c; and a hard coating 11 provided on the outer peripheral face 2d. When a width of the main body 2 in a first direction D1 perpendicular to the pair of side faces 2a and 2b is set to h 1 mm, a width of the hard coating 11 in the first direction D1 is set to W mm, and a thickness of the hard coating 11 in a second direction D2 perpendicular to the outer peripheral face 2d is set to L mm, the following Formula (1) is satisfied. 0.003 ‰¤ L ‹ h 1 / W ‰¤ 0.151
Inventors:
Daisuke Sato
Shuichi Kamura
Shuichi Kamura
Application Number:
JP2015049770A
Publication Date:
April 03, 2019
Filing Date:
March 12, 2015
Export Citation:
Assignee:
Riken Co., Ltd.
International Classes:
F16J9/26; F02F5/00
Domestic Patent References:
| JP2009287730A | ||||
| JP2009084604A | ||||
| JP2008183765A |
Foreign References:
| US20120205876 |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Hiromitsu Nakayama
Yoshiki Kuroki
Hiromitsu Nakayama