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. 09, 2007
Filed:
Jun. 02, 2005
Isamu Hotta, Yokohama, JP;
Toru Noda, Yokohama, JP;
Masaaki Kubo, Yokohama, JP;
Katsuya Moteki, Tokyo, JP;
Isamu Hotta, Yokohama, JP;
Toru Noda, Yokohama, JP;
Masaaki Kubo, Yokohama, JP;
Katsuya Moteki, Tokyo, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
An engine having a cylinder, a piston slideably received in the cylinder, a crankshaft connected to the piston, and a multi-link piston crank mechanism. The multi-link piston crank mechanism controls movement of the piston such that an acceleration of the piston at top dead center is less than an acceleration of the piston at bottom dead center. A determining device determines an operating condition of the engine. A combustion mode control device controls the engine to operate at an air-fuel ratio leaner than a stoichiometric air-fuel ratio when the determining device determines that the operating condition of the engine is in a predetermined operating region.