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. 28, 2018
Filed:
Feb. 03, 2015
Hitachi Construction Machinery Co., Ltd, Taito-ku, Tokyo, JP;
Shinya Imura, Toride, JP;
Masafumi Hita, Tsuchiura, JP;
Hiroaki Amano, Ushiku, JP;
Seiji Ishida, Hitachinaka, JP;
Ken Takeuchi, Kasumigaura, JP;
Itaru Naya, Tsuchiura, JP;
Chiaki Takahashi, Hitachinaka, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
A hybrid work machine includes a controller and a temperature sensor that detects an electric storage device temperature. In a case where (Tp+Tc)≥Te_min, the controller carries out a first comparison in which the controller compares a value of [(Tp+Tc)−Te_min] with a value of Ta_SOC, and the controller then selects a lower value of the first comparison. The controller then carries out a second comparison in which the controller compares the selected lower value of the first comparison with a value of [(Tp+Tc)−Te_max)]. The controller then sets a higher value of the second comparison as the torque of the assist motor Ta, wherein Tc is an accessory torque, Ta_SOC is an adjustment assist motor torque based on a current state of charge of the electric storage device, Ta is the torque of the assist motor, and Te_max is an engine maximum torque.