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:
Aug. 05, 2014
Filed:
Jun. 25, 2009
Makoto Yanagisawa, Kanagawa, JP;
Makoto Yanagisawa, Kanagawa, JP;
Sumitomo Heavy Industries, Ltd., Tokyo, JP;
Sumitomo(S.H.I.) Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
In a hybrid working machine, a control unit corrects an output upper limit value of an engine based on a deviation between a target revolution speed of the engine and an actual revolution speed of the engine, and output values of a motor generator, a hydraulically driven unit and an electrically driven unit are determined based on the corrected output upper limit value of the engine, or the control unit corrects an output lower limit value of the motor generator based on a deviation between the target revolution speed of the engine and the actual revolution speed of the engine, and the output values of the motor generator, the hydraulically driven unit and the electrically driven unit are determined based on the corrected output lower limit value of the motor generator.