Apparatus and method for controlling spool displacement of construction machine
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United States of America Patent
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Jun 2, 2020
Grant Date -
Feb 25, 2016
app pub date -
Apr 1, 2014
filing date -
Apr 3, 2013
priority date (Note) -
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Abstract
Provided are an apparatus and a method for controlling spool displacement of a construction machine, which are capable of improving regeneration efficiency of the construction machine, and improving a fuel efficiency characteristic of the construction machine by reducing pressure loss in the operating mode by adjusting the quantity of spool displacement in a regeneration mode when a current pressure of a main pump is less than a predetermined operating pressure, and determining whether the construction machine is in an operating mode or the regeneration mode in real time according to an operating angle of a joystick and the current pressure of the main pump when the current pressure of the main pump is greater than or equal to the predetermined operating pressure to variably change the quantity of spool displacement in the operating mode.
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