System, method, and apparatus for managing transmission shutdown operations
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United States of America Patent
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Aug 9, 2022
Grant Date -
Aug 19, 2021
app pub date -
May 4, 2021
filing date -
Dec 22, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A transmission includes an input shaft that couples to a prime mover, twin countershafts and a main shaft having gears coupled thereon, an output shaft that selectively provides a torque output to a driveline, a first shift actuator that selectively couples the input shaft to the main shaft. The transmission includes a second shift actuator that couples the main shaft to the output shaft with a selected reduction ratio, and a controller including a vehicle state circuit that interprets at least one vehicle operating condition, and a neutral enforcement circuit that provides a first neutral command to the first shift actuator and a second neutral command to the second shift actuator, in response to the at least one vehicle operating condition indicating that vehicle motion is not intended.
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