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:
Jan. 24, 2012
Filed:
Oct. 21, 2008
Naoki Takahashi, Yokohama, JP;
Masayuki Tomita, Fujisawa, JP;
Kenshi Ushijima, Kamakura, JP;
Koji Hiraya, Yokohama, JP;
Hirofumi Tsuchida, Yokosuka, JP;
Shunichi Aoyama, Yokohama, JP;
Naoki Takahashi, Yokohama, JP;
Masayuki Tomita, Fujisawa, JP;
Kenshi Ushijima, Kamakura, JP;
Koji Hiraya, Yokohama, JP;
Hirofumi Tsuchida, Yokosuka, JP;
Shunichi Aoyama, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A multi-link engine has a piston coupled to a crankshaft to move inside an engine cylinder. A piston pin connects the piston to an upper link, which is connected to a lower link by an upper link pin. A crank pin of the crankshaft rotatably supports the lower link thereon. A control link pin connects the lower link to one end of a control link, which is connected at another end to the engine block body by a control shaft. The crank pin has a center arranged on a straight line joining centers of the upper link pin and the control link pin such that an angle formed between the straight line and a horizontal axis that is perpendicular to a center axis of the cylinder and that passes through an axial center of a crank journal is the same for at top dead center and at bottom dead center.