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:
Feb. 19, 2019
Filed:
Dec. 03, 2015
Hitachi Construction Machinery Co., Ltd., Taito-ku, Tokyo, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
At the time of starting up an engine () using an assist motor generator (), a main controller () lowers a lower limit value in a charge/discharge range of an electricity storage device () from a first lower limit value (min) to a second lower limit value (min) through an energy management control part (B). The main controller () heightens the lower limit value in the charge/discharge range of an electricity storage device () from the second lower limit value (min) to the first lower limit value (min) when the start of the engine () is completed. Further, the main controller () displays engine stop prohibition information on a display device () when the start of the engine () is completed and when an SOC of the electricity storage device () falls below the first lower limit value (min).