Controller for automatic transmission

Interrelated power delivery controls – including engine control – Transmission control – Engine controlled by transmission

Reexamination Certificate

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Details

C477S097000, C477S118000, C477S144000, C477S155000

Reexamination Certificate

active

07393305

ABSTRACT:
In performing a down-shift based on a driver's intention of deceleration, an engine output increasing control is started at a time when a transfer torque capacity of the releasing clutch becomes small or zero and the actual oil pressure decreases to an initial oil pressure, not causing an acceleration feeling even upon the engine output increase. For estimating a time when which the real pressure of the releasing clutch decreases to a level of not higher than the initial pressure, the response of the real pressure relative to an oil pressure command value for the releasing clutch is approximated using a transfer characteristic of “first order lag+time delay.” An estimated real oil pressure obtained based on the transfer characteristic is compared with the initial pressure. It is determined a start timing of the engine output increasing control has been reached upon decrease of the estimated pressure to the initial pressure.

REFERENCES:
patent: 5133227 (1992-07-01), Iwatsuki
patent: 5282399 (1994-02-01), Sano et al.
patent: 5772554 (1998-06-01), Tabata
patent: 5863275 (1999-01-01), Nozaki et al.
patent: 6024669 (2000-02-01), Iwatsuki et al.
patent: 6740005 (2004-05-01), Watanabe et al.
patent: 6749534 (2004-06-01), Watanabe et al.
patent: 3-229932 (1991-10-01), None
patent: 7-247874 (1995-09-01), None
patent: 10-18877 (1998-01-01), None
patent: 2924463 (1999-05-01), None

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