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:
Apr. 29, 2008
Filed:
Dec. 22, 2005
Kenshi Ushijima, Kamakura, JP;
Shunichi Aoyama, Yokosuka, JP;
Katsuya Moteki, Tokyo, JP;
Naoki Takahashi, Yokohama, JP;
Kenshi Ushijima, Kamakura, JP;
Shunichi Aoyama, Yokosuka, JP;
Katsuya Moteki, Tokyo, JP;
Naoki Takahashi, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
An internal combustion engine includes a piston () and a crankshaft (). The crankshaft () includes: a journal (A) as a rotation center; a crank pin (B) that is located eccentrically with respect to the journal (A) and rotates integrally with the journal (A), the crank pin () connecting the piston () to the crankshaft (); and a counter weight (C) that is located eccentrically with respect to the journal (A) in a direction opposite to the crank pin () and rotates uniformly with the journal (A). A cutout () through which the counter weight (C) passes is formed in a wall () of a cylinder bore that accommodates the piston () so as to be free to move reciprocally along the wall (). As a result, the bottom dead center position of the piston can be lowered, and the overall height of the engine can be decreased.