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. 10, 2012
Filed:
Dec. 22, 2009
Shinnosuke Osafune, Nagasaki, JP;
Yuji Ohta, Nagasaki, JP;
Yoshimi Kagimoto, Nagasaki, JP;
Akihiro Miyanagi, Hyogo, JP;
Masahiko Mino, Nagasaki, JP;
Yoshihiro Ichiki, Nagasaki, JP;
Shinnosuke Osafune, Nagasaki, JP;
Yuji Ohta, Nagasaki, JP;
Yoshimi Kagimoto, Nagasaki, JP;
Akihiro Miyanagi, Hyogo, JP;
Masahiko Mino, Nagasaki, JP;
Yoshihiro Ichiki, Nagasaki, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A ship powered by an internal combustion engine () and an electric motor () connected to a propeller () powered by surplus electric power obtained by a thermal discharge recovery system has a controller including a feedback control section for controlling a base amount of fuel injected to the internal combustion engine () based on the difference between the target number of rotation of the propeller given by the operator and the real number of rotation, and a feed-forward control section having a means () for calculating an overall power output and a means () for calculating a correction in the amount of fuel injected to the internal combustion engine based on the overall power output and the number of rotation of the propeller. The base amount of fuel is corrected by subtracting the correction obtained by the feed-forward section from the base amount of fuel calculated by the feedback control section whereby preventing a rapid change in the speed of the ship due to rapid change in ship loads.