Title:
ハイブリッド式建設機械
Document Type and Number:
Japanese Patent JP5647052
Kind Code:
B2
Abstract:
Provided is a hybrid construction machine (driving the upper swing structure (20) using a hydraulic motor (27) and an electric motor (25) together) capable of regenerating the energy of the upper swing structure (20) in deceleration or stopping into electric power and using the regenerated electric power for assisting the driving of the upper swing structure (20), while also being capable of securing satisfactory operational feeling and operation capability even when the electric motor (25) does not operate. When the electric motor (25) is not driven, a controller (51) controls a hydraulic circuit system (40) (specifically, a swing direction/flow rate control valve (42), a center bypass cut valve and a regulator) so as to increase output torque of the hydraulic motor (27) by an amount corresponding to torque to be compensated for the non-driving of the electric motor (25) compared to cases where the electric motor (25) is driven.
Inventors:
大木 孝利
佐竹 英敏
石川 広二
西川 真司
佐竹 英敏
石川 広二
西川 真司
Application Number:
JP2011068649A
Publication Date:
December 24, 2014
Filing Date:
March 25, 2011
Export Citation:
Assignee:
日立建機株式会社
International Classes:
E02F9/20; E02F9/22; F15B20/00
Attorney, Agent or Firm:
Patent business corporation development-of-knowledge international patent firm
Kasuga 讓
Ino tree Yuichi
Kasuga 讓
Ino tree Yuichi
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