Title:
ピストンリング構造
Document Type and Number:
Japanese Patent JP6663241
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a piston ring structure that even when in-cylinder pressure and exhaust gas temperature increase with high supercharging, can surely hold gas sealability to avoid increase of blow-by gas.SOLUTION: For a piston ring structure having a first ring 6 in which one place in a circumferential direction is cut out as an abutment 6a so as to be capable of being externally mounted to an annular groove formed on an upper outer periphery of a piston, at bot end parts facing each other so as to hold the abutment 6a of the first ring 6, a heat insulation layer 14 is formed of a heat insulation material having lower heat conductivity than a base material of the first ring 6 so that at least the facing surfaces at both end parts are covered.SELECTED DRAWING: Figure 1
Inventors:
Ishii Mori
Application Number:
JP2016026509A
Publication Date:
March 11, 2020
Filing Date:
February 16, 2016
Export Citation:
Assignee:
Hino Motors Ltd.
International Classes:
F16J9/26; F02F5/00; F16J9/16
Domestic Patent References:
| JP2010031789A | ||||
| JP59071940U |
Attorney, Agent or Firm:
Yamada Patent Office