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:
Mar. 29, 2011
Filed:
Apr. 03, 2008
Takuya Kado, Shizuoka, JP;
Takuya Kado, Shizuoka, JP;
Yamaha Hatsudoki Kabushiki Kaisha, Shizuoka, JP;
Abstract
A predicted boat speed value generator, in accordance with one or more embodiments, receives an engine rotation signal, an intake pressure value, and other detection signals including shift position, and provides a predicted boat speed value. A control signal generator determines the fuel injection amount, the amount of air, and the ignition timing based on the predicted boat speed to provide respective control signals. The predicted boat speed value generator includes a predicted boat speed mapped value extraction process to search through the predicted boat speed value map during the constant speed operation and acceleration, based on the rotational speed and the intake pressure, to extract the predicted boat speed mapped value 'd' for output. A predicted decelerating boat speed value output process establishes the initial predicted boat speed value to provide the attenuated predicted boat speed value in every cycle.