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:
Feb. 26, 2008
Filed:
Mar. 12, 2007
Applicants:
Koji Hiraya, Yokohama, JP;
Ryosuke Hiyoshi, Yokosuka, JP;
Daisuke Tanaka, Yokosuka, JP;
Hirofumi Tsuchida, Yokosuka, JP;
Inventors:
Koji Hiraya, Yokohama, JP;
Ryosuke Hiyoshi, Yokosuka, JP;
Daisuke Tanaka, Yokosuka, JP;
Hirofumi Tsuchida, Yokosuka, JP;
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B 75/04 (2006.01); F01L 1/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A variable expansion-ratio engine includes an expansion-ratio adjuster configured to adjust an expansion ratio; a load detector configured to detect an engine load; and a controller configured to control the expansion-ratio adjuster. The controller controls the expansion ratio such that the expansion ratio at the time when the load is below a predetermined load value is set lower than that at the time when the load is equal to the predetermined load value.