Control system of hybrid construction machine
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United States of America Patent
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Jun 12, 2018
Issued Date -
N/A
app pub date -
Dec 2, 2014
filing date -
Jan 24, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A control system of a hybrid construction machine includes a regeneration passage switching valve having a normal position where flow of working fluid is blocked, and a regeneration position allowing for the working fluid to flow from main passages to a regeneration motor when a working fluid pressure of the main passages reaches a set pressure during operation of the actuators, and an assist switching valve having a normal position proportionally dividing the working fluid of an assist passage into a regeneration passages, a first switching position supplying more working fluid of the assist passage to one of the main passages when that the one has a higher working fluid pressure, and a second switching position supplying more working fluid of the assist passage to the other one of the main passages when that the other one has a higher working fluid pressure.
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