Title:
PISTON RING COMBINATION, AND INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2023/053607
Kind Code:
A1
Abstract:
A piston ring combination for mounting to a piston in an internal combustion engine is provided which comprises four compression rings. An outer peripheral surface of a first compression ring includes a barrel face, an outer peripheral surface of a second compression ring includes an outer peripheral end portion and a tapered face, an outer peripheral surface of a third compression ring includes an outer peripheral end portion and a tapered face, and an outer peripheral surface of a fourth compression ring includes an outer peripheral end portion and a tapered face.
Inventors:
HIKONE AKIRA (JP)
KAWAI KIYOYUKI (JP)
KAWAI KIYOYUKI (JP)
Application Number:
PCT/JP2022/024439
Publication Date:
April 06, 2023
Filing Date:
June 20, 2022
Export Citation:
Assignee:
TPR CO LTD (JP)
International Classes:
F02F5/00; F16J9/00
Foreign References:
| JP2015158247A | 2015-09-03 | |||
| JPH06185620A | 1994-07-08 | |||
| JPS5638138U | 1981-04-10 | |||
| JP2011214662A | 2011-10-27 | |||
| US2798779A | 1957-07-09 | |||
| US2511458A | 1950-06-13 |
Attorney, Agent or Firm:
IP FIRM SHUWA (JP)
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