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:
Jul. 19, 2011
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, Yokosuka, JP;
Naoki Takahashi, Yokohama, JP;
Masayuki Tomita, Fujisawa, JP;
Kenshi Ushijima, Kamakura, JP;
Koji Hiraya, Yokohama, JP;
Hirofumi Tsuchida, Yokosuka, JP;
Shunichi Aoyama, Yokosuka, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A multi-link engine has a piston that moves inside a cylinder. A piston pin connects the piston to an upper link, which is connected to a lower link. A crank pin of a crankshaft supports the lower link thereon. The lower link is pivotally connected to one end of a control link, which is connected at another end to the engine block body by a control shaft. The control shaft is lower than a crank journal of the crankshaft, and disposed on a first side of a plane that is parallel to a cylinder center axis and that contains a center rotational axis of the crank journal. The cylinder center axis is located on a second (i.e., opposite the first side) plane. The control link has a center axis that is parallel to the cylinder center axis when the piston is near top and bottom dead centers.