Mattingly & Malur, PC
Hybrid construction machine
Provided is a hybrid construction machine (driving the upper swing structure using a hydraulic motor and an electric motor together) capable of regenerating the energy of the upper swing structure in deceleration or stopping into electric power and using the regenerated electric power for assisting the driving of the upper swing structure, while also being capable of securing satisfactory operational feeling and operation capability even when the electric motor does not operate. When the electric motor is not driven, a controller controls a hydraulic circuit system (specifically, a swing direction/flow rate control valve, a center bypass cut valve and a regulator) so as to increase output torque of the hydraulic motor by an amount corresponding to torque to be compensated for the non-driving of the electric motor compared to cases where the electric motor is driven.
Hitachi Construction Machinery Co., Ltd.
B E E B B Y E E E E
B60K E02F E02F B60W B60K Y02T E02F E02F E02F E02F
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Kouji Hidetoshi Takatoshi Shinji
Ishikawa Satake Ooki Nishikawa