Abnormality detecting apparatus for automatic speed changer

Details Abnormality detecting apparatus for automatic speed changer Abnormality detecting apparatus for automatic speed changer

2004-08-09

2008-07-15

Tran, Dalena (Department: 3664)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Transmission control

C477S127000

Reexamination Certificate

active

07400960

ABSTRACT:
In a conventional abnormality detecting apparatus, it is impossible to judge a breakdown before the breakdown actually takes place. An abnormality detecting apparatus for an automatic speed changer includes a speed change controlling unit for controlling the automatic speed changer; a learn controlling device for optimizing an rpm change at the time of speed change control by the speed change controlling device; and an abnormality detection controlling device for judging whether a learned value of the learn controlling device falls within a range between an upper limit and a lower limit and if the learned value falls out of the range, storing the condition as abnormal. Thus, it is possible to detect the abnormal condition of constituents such as a clutch in the automatic speed changer before the actual breakdown.

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patent: 6024671 (2000-02-01), Sawa et al.
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patent: 2000-035115 (2000-02-01), None
patent: 2001-56049 (2001-02-01), None

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