Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Reexamination Certificate
2006-09-12
2006-09-12
Ho, Ha (Department: 3681)
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
C477S117000, C477S121000, C477S159000
Reexamination Certificate
active
07104925
ABSTRACT:
Under the learning mode during a vehicle stationary condition, an oil pressure of the friction engagement element for setting a standby oil pressure value is increased by a predetermined step pressure while a transmission input shaft rotational speed has been maintained, and a standby oil pressure is set for shifting the friction engagement element to an engagement side. A controlled value is verified whether it is within a predetermined range corresponding to the predetermined step pressure when a change of the input value due to decrease of the turbine rotational speed satisfies a predetermined condition. The controlled value is learned when the controlled value is within the predetermined range corresponding to the step pressure. A step pressure larger than the step pressure is set when the controlled value is beyond the predetermined range corresponding to the step pressure.
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patent: 6754572 (2004-06-01), Kawamoto et al.
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patent: 2004-44715 (2004-02-01), None
Aisin Seiki Kabushiki Kaisha
Buchanan & Ingersoll PC
Ho Ha
LandOfFree
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