Patent ID: 8157702

Claim:
A control apparatus for an automatic transmission including a first friction engagement element that is brought into an engagement state upon selecting one of operating ranges including a forward drive range and a reverse drive range and brought into a release state upon selecting the other of the operating ranges, and a second friction engagement element that is brought into a release state upon selecting the one of the operating ranges and brought into an engagement state upon selecting the other of the operating ranges, the control apparatus comprising: a hydraulic pressure control means for controlling supply of hydraulic pressure to the first friction engagement element and the second friction engagement element and discharge of hydraulic pressure from the first friction engagement element and the second friction engagement; and a discharge rate changeover control means for increasing a discharge rate value of the hydraulic pressure which is discharged from the first friction engagement element in a case where when shifting from the one of the operating ranges to the other of the operating ranges is selected, changeover to the other of the operating ranges is carried out before completing release of the first friction engagement element, so as to become larger than a discharge rate value of the hydraulic pressure which is discharged from the first friction engagement element before the changeover to the other of the operating ranges is carried out.