Working Vehicle Travel Control Apparatus
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United States of America Patent
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N/A
Issued Date -
Jun 20, 2013
app pub date -
Jun 24, 2011
filing date -
Aug 31, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A working vehicle travel control apparatus, comprising: a variable displacement hydraulic pump; a variable displacement hydraulic motor connected in a closed circuit to the hydraulic pump and driven upon pressure oil from the hydraulic pump; a first control unit controls a motor displacement angle of the hydraulic motor by an electrical signal; a constant mesh transmission includes a clutch device that includes a High clutch section transmits power at a first transmission gear ratio and a Low clutch section that transmits power at a second transmission gear ratio, which is greater than the first transmission gear ratio, the constant mesh transmission transmits or interrupts power from the hydraulic motor; and a second control unit controls the first control unit so as to reduce the motor displacement angle to a predetermined value when the transmission is switched from the first transmission gear ratio to the second transmission gear ratio.
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