Predictive-based control for transmission shifting
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United States of America Patent
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Aug 4, 2022
Grant Date -
Aug 4, 2022
app pub date -
Feb 4, 2021
filing date -
Feb 4, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
A powertrain includes a transmission having an input shaft, an output shaft, and a plurality of clutches engageable in various combinations to establish varying power flow paths between the input and output shafts. A controller is programmed to, responsive to a shift of the transmission: reduce torque capacity of an off-going one of the clutches and increase torque capacity of an oncoming one of the clutches during a torque transfer phase of the shift, and, in response to an inertia phase of the shift, continue to command non-zero torque capacity to the off-going clutch such that the off-going clutch brakes the output shaft throughout an entire duration of the inertia phase.
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