Method for controlling vehicle automatic transmission systems
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United States of America Patent
Stats
-
Jun 16, 1992
Grant Date -
N/A
app pub date -
Mar 22, 1990
filing date -
Mar 27, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a method for automatically controlling the gear-shifting operation of a vehicle gear transmission so as to shift the transmission to a calculated target position according to the vehicle operation parameter(s), the stability of the calculated target position is discriminated and the required gear-shifting operation is carried out only when the stability satisfies a prescribed condition, whereby unnecessary gear-shifting operations can be effectively eliminated even if for some reason the calculated target gear position frequently changes.
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