Verfahren und Vorrichtung zum Steuern des Solenoidventils eines Automatikgetriebes eines Kraftfahrzeugs

摘要

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.