HYDRAULIC CIRCUIT AND WORKING MACHINE INCLUDING THE SAME
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United States of America Patent
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Issued Date -
Jan 31, 2013
app pub date -
Apr 19, 2012
filing date -
Apr 20, 2011
priority date (Note) -
Abandoned
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Abstract
A working machine hydraulic circuit, including: a hydraulic motor; a pilot pressure system configured to supply hydraulic fluid at a pilot pressure to one or more components of the working machine; and a make-up pressure system in hydraulic fluid communication with the pilot pressure system and the hydraulic motor, and configured to supply hydraulic fluid to the hydraulic motor from the pilot pressure system if the hydraulic fluid pressure in a part of the hydraulic motor is below a threshold pressure such that, during deceleration of the hydraulic motor, the make-up pressure system is operable to supply fluid from the pilot pressure system to the hydraulic motor to reduce the risk of cavitation in the hydraulic motor.
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