Construction equipment hydraulic system and control method therefor
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United States of America Patent
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Dec 12, 2017
Grant Date -
Oct 6, 2016
app pub date -
Mar 19, 2014
filing date -
Mar 19, 2013
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Abstract
Disclosed are a hydraulic system for construction equipment and a method of controlling the same, and the hydraulic system for construction equipment includes: a plurality of pressure control-type hydraulic pumps driven by an engine provided in construction equipment; an actuator driven by working oil discharged from the hydraulic pump; a closed center-type main control valve provided between the hydraulic pump and the actuator, and bypassing a virtual flow rate; and a controller configured to control the hydraulic pump by receiving the bypassed virtual flow rate from the main control valve.
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