AUXILIARY FLOW VALVE SYSTEM AND METHOD FOR MANAGING LOAD FLOW REQUIREMENTS FOR AUXILIARY FUNCTIONS ON A TRACTOR HYDRAULIC SYSTEM
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United States of America Patent
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Issued Date -
Aug 15, 2013
app pub date -
Nov 29, 2012
filing date -
Nov 29, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system and method for managing hydraulic fluid load flow requirements for a tractor having a single pump hydraulic system. The system and method controls an implement hydraulic system and an auxiliary implement hydraulic system using a single hydraulic pump. The auxiliary flow valve system and method of the present disclosure gives precedence to the auxiliary functions so as to maintain full function of the auxiliary device. It also may supply a reduced flow, less than the maximum available from the system hydraulic pump to the auxiliary device. The remaining flow is available to the implement hydraulic system, with full flow being available to the implement when no auxiliary function is used. It also provides the ability to use a closed center valve in a load sensing system by bleeding flow pressure from the auxiliary hydraulic system.
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