Baker Botts L.L.P.
Construction machine
Construction machine capable of incorporating an engine and using an external power source. The construction machine includes an electrical storage device performing a charge with the external power source, uses the electrical storage device to provide assist when the power of the engine is insufficient, uses an electrical charge in the electrical storage device systematically in accordance with work time, and efficiently uses the electrical storage device by controlling its discharge amount in accordance with load status. The construction machine includes the engine, accessory loads connected to the engine, an assist electric motor driven by the engine, electrical power converters for converting an AC current, which is the output current of the assist electric motor, to a DC current, and the electrical storage device connected to the DC side of each electrical power converter. The electrical storage device becomes charged through a charging device from the external power source.
HITACHI CONSTRUCTION MACHINERY CO., LTD.
B B E Y B B B Y B E B Y B B Y F B
B60L B60L E02F Y02T B60L B60L B60L Y02T B60L E02F B60L Y02T B60L B60L Y02T F02D B60L
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Kazuo Manabu Shiho Hidetoshi Seiji Yusuke Masataka
Fujishima Edamura Izumi Satake Ishida Kajita Sasaki