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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.:

US 10774646 B1

PDFFull Text
Date of Patent:
Sep. 15, 2020

Filed:

Apr. 02, 2018

Rotary engine with oil pump

Applicant:

Lg Electronics Inc., Seoul, KR;

Inventors:

Yunhi Lee, Seoul, KR;

Byeonghun Yu, Seoul, KR;

Byeongchul Lee, Seoul, KR;

Assignee:

LG ELECTRONICS INC., Seoul, KR;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Mary Davis

Int. Cl.
CPC ...
F01C 21/04 (2006.01); F02B 53/00 (2006.01); F01M 1/02 (2006.01); F01C 17/02 (2006.01); F01M 1/06 (2006.01); F02B 55/14 (2006.01); F01C 1/22 (2006.01); F01C 13/04 (2006.01); F02B 55/02 (2006.01); F04C 2/10 (2006.01);
U.S. Cl.
CPC ...
F01C 21/04 (2013.01); F01C 1/22 (2013.01); F01C 13/04 (2013.01); F01C 17/02 (2013.01); F01M 1/02 (2013.01); F01M 1/06 (2013.01); F02B 53/00 (2013.01); F02B 55/02 (2013.01); F02B 55/14 (2013.01); F04C 2/10 (2013.01); F01M 2001/0238 (2013.01); F01M 2001/0269 (2013.01); F01M 2001/062 (2013.01); F04C 2240/50 (2013.01);
Abstract

A rotary engine having a crankshaft, a housing provided with lobe accommodating portions arranged to surround the crankshaft, and combustion chambers communicating with the lobe accommodating portions, a rotor rotatable eccentrically with respect to the crankshaft and provided with lobes continuously accommodated in the lobe accommodating portions, a housing cover provided with a bearing portion through which the crankshaft is inserted so as to be rotatably supported, and a lubricating unit to supply oil to the bearing portion, wherein the lubricating unit includes an oil pan to accommodate oil therein, an oil pump to pump up oil filled in the oil pan, and an oil supply passage having both ends located in the oil pump and the bearing portion, respectively, is provided. This structure may allow direct and effective lubrication of the bearing portion, and can employ a journal bearing.

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