Method and apparatus for controlling a solenoid valve of an...

Details Method and apparatus for controlling a solenoid valve of an... Method and apparatus for controlling a solenoid valve of an...

2006-01-31

2006-01-31

Black, Thomas G. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Transmission control

C701S066000, C701S067000, C477S049000, C477S160000, C251S129150, C361S160000

Reexamination Certificate

active

06993424

ABSTRACT:
When a target duty of a solenoid valve of an automatic transmission of a vehicle lies in a predetermined duty range, the solenoid valve is driven for an adjusted over-excitation period obtained by adjusting a base over-excitation period on the basis of an over-excitation period adjusting value. Therefore, the solenoid valve may be normally controlled in a region in which it shows an abnormal response characteristic.

REFERENCES:
patent: 4620259 (1986-10-01), Oshizawa
patent: 4947734 (1990-08-01), Fujita et al.
patent: 5202813 (1993-04-01), Uota et al.
patent: 5404301 (1995-04-01), Slicker
patent: 6122582 (2000-09-01), Ueda
patent: 6208498 (2001-03-01), Ueda
patent: 6790160 (2004-09-01), Kato et al.
patent: 298 09 412 (1998-10-01), None
patent: 11-40416 (1999-02-01), None

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