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. 17, 2022
Filed:
Jun. 04, 2018
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Shintarou Tanaka, Tokyo, JP;
Masatsugu Arai, Tsuchiura, JP;
Naoki Fukuda, Tsuchiura, JP;
Takaaki Tanaka, Tsuchiura, JP;
Yukiaki Shimizu, Tsuchiura, JP;
HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Abstract
A power regeneration system of a work vehicle includes: a first generator () and a second generator () that are driven by an engine (); a first electric circuit (C) for supplying electric power to traveling motors (L,R); a second electric circuit (C) for supplying electric power to an auxiliary device (); a voltage step down converter () providing electric power from the first electric circuit to the second electric circuit; and a controller () that determines whether a travel mode of the work vehicle is a powering mode or a regeneration mode in order to control driving of the voltage step down converter. If the travel mode is the regeneration mode, the controller provides the regenerative power from the first electric circuit through the voltage step down converter to the second electric circuit, in order to drive the auxiliary device with the regenerative power.