Continuously variable transmission control
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United States of America Patent
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Dec 7, 2021
Grant Date -
Sep 3, 2020
app pub date -
Nov 7, 2018
filing date -
Nov 7, 2017
priority date (Note) -
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Abstract
A control system for a vehicle uses one or more inputs of a velocity request, a brake request, a speed request, travel direction indication, engine speed, and vehicle speed to determine a control strategy for a continuously variable transmission. A target engine speed is selected based upon the inputs, and the engine and continuously variable transmission ratio are controlled to achieve the target engine speed while controlling the vehicle according to the inputs. In some embodiments, the control strategy further selects the target engine speed according to accessory system demands, such as a hoist or lift system.
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