Control system for hydrostatic pump
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United States of America Patent
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Nov 4, 2003
Grant Date -
N/A
app pub date -
Aug 9, 2002
filing date -
Aug 9, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A non-feedback proportional system is provided to achieve desired operating characteristics which will allow the control of a hydrostatic transmission to closely approximate the control performance of a displacement feedback control system by establishing certain parameters relating to (1) the servo spring rate; (2) the valve plate index; (3) valve plate crossport/trap; (4) valve plate porting geometry; (5) swashplate offset; and (6) piston bore volume.
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