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:
Nov. 19, 2002
Filed:
Sep. 27, 2000
Keiichi Hiki, Shizuoka, JP;
Sanshin Kogyo Kabushiki Kaisha, Shizuoka, JP;
Abstract
A two cycle engine includes an exhaust control valve, which opens and closes an exhaust port, and a controller for controlling the exhaust valve. The controller is configured to increase the effective cross-sectional area of the exhaust port when an engine speed increases beyond a specified value and to adjust the amount of fuel injected into the combustion chamber based upon the sensed position of the exhaust control valve. A method for controlling a two-cycle engine is also disclosed. The method comprises determining an engine speed, using the engine speed to determine a target position for an exhaust control valve, moving the exhaust valve towards the target position, sensing a position of the exhaust control valve, and determining a fuel injection amount from at least the sensed position of the exhaust valve and the engine speed.