ACCUMULATOR ASSISTED HYDROSTATIC DRIVELINE AND OPTIMIZATION METHOD THEREOF
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United States of America Patent
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N/A
Issued Date -
Sep 27, 2012
app pub date -
Mar 21, 2012
filing date -
Mar 21, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A hydrostatic driveline for a vehicle, a method for minimizing a fuel consumption rate of the vehicle, and a method for tracking an optimal state of charge function for a hydrostatic accumulator are provided. The driveline includes a power source, a drive axle, a first fluid accumulator, a second fluid accumulator, an auxiliary circuit including a first pump drivingly engaged with the power source, and a drive circuit including a second pump drivingly engaged with the power source, a motor drivingly engaged with the drive axle, and a directional valve. The second pump is in fluid communication with the directional valve and the directional valve in fluid communication with the first fluid accumulator and the second fluid accumulator. The directional valve may be selectively controlled to direct fluid from the second pump and the motor to the first fluid accumulator and the second fluid accumulator.
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