Gearing control method for automatic gear mechanism
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United States of America Patent
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May 24, 2016
Grant Date -
Aug 28, 2014
app pub date -
Oct 18, 2012
filing date -
Oct 18, 2011
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Abstract
Disclosed herein is a method for controlling gear shifting of an automatic transmission from an N gear stage to an N′ gear stage. The gear shifting is embodied by means of engaging and releasing friction elements. The method includes selecting at least two among an rpm of a turbine, an rpm of a first motor generator (MG1), an rpm of a second motor generator (MG2) and an rpm of a planetary gear set as control factors, and controlling engagement and release of the friction elements using the control factors.
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