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:
Jul. 23, 2013
Filed:
Jul. 25, 2008
Hitoshi Adachi, Osaka, JP;
Shusuke Okada, Osaka, JP;
Tomohiro Otani, Osaka, JP;
Yanmar Co., Ltd., Osaka, JP;
Abstract
The purpose of the present invention is to provide an engine having a revision means which regulates rotation speed of each of cylinders while reflecting specific unevenness of rotation of each of the cylinders. With regard to an enginehaving a plurality of cylinders wherein opening timing of each of injectorscan be controlled respectively, comprising an individual standard rotation speed output unitwhich outputs individual standard rotation speed Nstdi of each of the cylinders following fuel injection of the corresponding injectorwhen all the injectorsare in normal state, an engine rotation speed sensorwhich detects individual actual rotation speed Ni of each of the cylinders following the fuel injection of the corresponding injector, and a revision amount calculation unitwhich calculates revision amount of fuel injection amount to each of the cylinders from the corresponding injectorbased on difference between the individual standard rotation speed Nstdi stored in the individual standard rotation speed output unitand the individual actual rotation speed Ni calculated by the engine rotation speed sensor