The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 2020
Filed:
Jan. 11, 2019
Dong Yang Piston Co., Ltd., Gyeonggi-do, KR;
Jun Kui Yang, Seoul, KR;
Kwan Ho Ryu, Gyeonggi-do, KR;
Sang Hyuk Jun, Gyeonggi-do, KR;
Woo Seok Shim, Gyeonggi-do, KR;
In Cheol Yoo, Gyeonggi-do, KR;
Jang Ik Park, Gyeonggi-do, KR;
DONG YANG PISTON CO., LTD., Gyeonggi-Do, KR;
Abstract
Provided is a piston for an internal combustion engine. The piston includes a body including, at an upper part of the body, a crown including a combustion chamber where fuel is burnt and including, at a lower part of the body, a piston pin boss into which a piston pin is inserted and a skirt corresponding to a cylinder wall, and a cooling channel including a refrigerant channel, a refrigerant inlet provided at a side of the refrigerant channel, and a refrigerant outlet provided at the other side of the refrigerant channel, wherein a cross section of the cooling channel has an overall elliptic shape to reduce stress occurring at an upper side of the cooling channel when the fuel is burnt in the internal combustion engine, and at least one of arcs of the ellipse is configured as a first elliptical arc of a quadratic curve.