Control device for hybrid construction machine
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United States of America Patent
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May 19, 2015
Grant Date -
Nov 3, 2011
app pub date -
Jul 2, 2010
filing date -
Jul 10, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A control device for a hybrid construction machine includes a regulator that performs control such that a tilt angle of a variable volume pump increases as an exerted pilot pressure decreases. A controller switches a main switch valve such that an oil discharged from the variable volume pump is led to a regenerative hydraulic motor and switches a pilot selection valve such that a second pilot flow passage provided with a solenoid variable pressure reducing valve communicates with the regulator when all of a plurality of operation valves are determined to be in a neutral position.
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