Engine torque smoothing
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United States of America Patent
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Sep 29, 2020
Grant Date -
Jun 13, 2019
app pub date -
Feb 16, 2019
filing date -
Jan 12, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
Methods, devices, estimators, controllers and algorithms are described for estimating the torque profile of an engine and/or for controlling torque applied to a powertrain by one or more devices other than the engine itself to manage the net torque applied by the engine and other device(s) in manners that reduce undesirable NVH. The described approaches are particularly well suitable for use in hybrid vehicles in which the engine is operated in a skip fire or other dynamic firing level modulation manner—however they may be used in a variety of other circumstances as well. In some embodiments, the hybrid vehicle includes a motor/generator that applies the smoothing torque.
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