Controlling gearshifting to prevent powertrain hunting
A method for controlling gearshifts of an automatic transmission includes preventing an upshift while the vehicle accelerates on an ascending grade, if predicted vehicle acceleration in a target gear is less than a reference vehicle acceleration in the target gear; accelerating the vehicle on the gr...
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Main Authors | , , , |
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Format | Patent |
Language | English |
Published |
07.10.2014
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Subjects | |
Online Access | Get full text |
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Summary: | A method for controlling gearshifts of an automatic transmission includes preventing an upshift while the vehicle accelerates on an ascending grade, if predicted vehicle acceleration in a target gear is less than a reference vehicle acceleration in the target gear; accelerating the vehicle on the grade; and producing the upshift, if predicted vehicle acceleration in the target gear is greater than a reference vehicle acceleration. |
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Bibliography: | Application Number: US201113285138 |