Charge pressure circuit arrangement for steering control for a vehicle
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United States of America Patent
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Aug 23, 2016
Grant Date -
Feb 11, 2016
app pub date -
Aug 8, 2014
filing date -
Aug 8, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A steering system is described for a vehicle having steerable wheels. A hydraulic charge pressure circuit may be configured to provide charge pressure to one or more hydraulic components of the vehicle, and a hydraulic drive pressure circuit may be configured to provide working pressure to one or more other hydraulic components of the vehicle. Hydraulic machines may rotate front wheels in order to drive the vehicle, and a front valve assembly may control steering of the front wheels by controlling the hydraulic machines. The hydraulic machines may be driven to rotate the front wheels by the working pressure from the hydraulic drive pressure circuit, and the front valve assembly may control the front hydraulic machines to steer the agricultural vehicle by controlling flow of hydraulic fluid from the hydraulic charge pressure circuit through the front valve assembly.
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