Title:
OIL RING FOR INTERNAL COMBUSTION ENGINE AND PISTON ASSEMBLY INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2020/162702
Kind Code:
A3
Abstract:
The present invention relates to an oil ring for an internal combustion engine and a piston assembly including same. The oil ring for an internal combustion engine according to the present invention comprises: a compression part protruding from the top portion of the body of the oil ring and coming into close contact with the inner wall of a cylinder so as to effectively restrict expanding gas generated in the combustion chamber; a scraper part including a nose which protrudes from the bottom portion of the body and comes into close contact with the inner wall of the cylinder so as to scrape excess oil supplied to the inner wall of the cylinder; and an oil suction part capable of collecting and discharging the excess oil supplied to the inner wall of the cylinder in a space formed by the compression part and the scraper part. Therefore, the oil ring can reduce leakage of high-temperature high-pressure gas generated in the combustion chamber, and can prevent incomplete combustion due to oil leaking into the combustion chamber.
Inventors:
HAN GEUM TAI (KR)
Application Number:
PCT/KR2020/001742
Publication Date:
October 01, 2020
Filing Date:
February 07, 2020
Export Citation:
Assignee:
SAMYOUNG MACHINERY CO LTD (KR)
International Classes:
F16J9/06; F16J9/20
Foreign References:
| KR200374751Y1 | 2005-02-03 | |||
| KR101570998B1 | 2015-11-23 | |||
| KR101677169B1 | 2016-11-17 | |||
| JPH0558858U | 1993-08-03 | |||
| KR20030035268A | 2003-05-09 |
Other References:
See also references of EP 3730818A4
Attorney, Agent or Firm:
PLUS INTERNATIONAL IP LAW FIRM (KR)
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