Speed control for working vehicle
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United States of America Patent
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Aug 8, 2017
Grant Date -
Feb 4, 2016
app pub date -
Jul 22, 2015
filing date -
Aug 1, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A speed control device in a traveling work vehicle changes a speed of rotational drive power from an engine to drive vehicle wheels and includes: a target speed calculator determining a target speed, based on operation deflection of a speed change device. A vehicle speed controller adjusting a speed change ratio based on the target speed. A vehicle speed obtainer obtaining an actual vehicle speed. A forcible target speed modifier forcibly modifying the target speed to a lower speed based on operation of a braking device. A release can treat an operation of the speed change device as a trigger to cancel the target speed forcibly modified by the forcible target speed modifier, and conforming the target speed to the actual vehicle speed.
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