Controller for automatic transmission
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United States of America Patent
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Apr 23, 2019
Grant Date -
Jan 25, 2018
app pub date -
Jul 17, 2017
filing date -
Jul 20, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
In a controller for an automatic transmission, when a jump gear shift via a plurality of intermediate shift stages is executed, a first and a second target intermediate shift stages are extracted, and a target input shaft rotation speed change rate is calculated from a difference in synchronous rotation speed between a shift stage before a current gear shift and the second target intermediate shift stage as a target shift stage of a gear shift which is executed after the current gear shift. Accordingly, it is possible to avoid a situation in which a shifting time in the gear shift control of the step before the second target intermediate shift stage becomes very short and thus packing of a clutch pack is not executed in a timely manner.
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