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:
May. 10, 2011
Filed:
Mar. 25, 2009
Eiji Nishi, Kawachinagano, JP;
Nobuyuki Okabe, Izumi, JP;
Kenji Yoshikawa, Osaka, JP;
Kubota Corporation, Osaka, JP;
Abstract
An engine controller () includes a first mode control module () for performing a first mode control in which a fuel injection amount in an engine () is obtained based on a first torque-engine rotational speed characteristic, and a second mode control module () for performing a second mode control in which the fuel injection amount is obtained based on a second torque-engine rotational speed characteristic. The first mode control module () has a first engine load estimation part () for estimating an engine load based on a difference in rotational speed between a non-load engine rotational speed and an actual engine rotational speed, and the second mode control module () has a second engine load estimation part () for estimating an engine load based on the fuel injection amount.