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Title:
ハイブリッド型作業機械
Document Type and Number:
Japanese Patent JP5184616
Kind Code:
B2
Abstract:
A hybrid working machine includes an engine, an assist motor configured to assist the engine, a hydraulic pump driven by the engine, an electric power accumulating unit configured to feed the assist motor with electric power, an electric-discharge electric motor configured to perform power running with electric power of an electric power accumulator of the electric power accumulating unit, an electric-discharge hydraulic motor connected to the electric-discharge electric motor, and a hydraulic circuit configured to control driving of the electric-discharge hydraulic motor. The hydraulic circuit includes a circulation circuit configured to be connected to a hydraulic feed port and a hydraulic discharge port of the electric-discharge hydraulic motor and a selector valve configured to perform such switching as to connect the electric-discharge hydraulic motor to the circulation circuit at a time of performing an electric discharge operation.

Inventors:
Koji Kawashima
Makoto Yanagisawa
Application Number:
JP2010274861A
Publication Date:
April 17, 2013
Filing Date:
December 09, 2010
Export Citation:
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Assignee:
Sumitomo Heavy Industries Ltd.
International Classes:
E02F9/20; H02J7/00
Domestic Patent References:
JP2009261227A
JP2005218285A
JP2009268222A
JP2009070777A
Foreign References:
WO2009125833A1
Attorney, Agent or Firm:
Tadahiko Ito



 
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