Patent ID: 7951034

Claim:
A hydraulic control apparatus for an automatic transmission achieving a lower medium speed by engaging a first friction engagement element and a second friction engagement element and a low speed lower than the lower medium speed by engaging the first friction engagement element and a one-way clutch, the hydraulic control apparatus for the automatic transmission, comprising: a range pressure generating unit outputting a forward range pressure upon a forward range based on a shift lever operation and discharging the forward range pressure upon another shift range; a first pressure regulating unit outputting the forward range pressure through pressure regulation to a hydraulic servo of the first friction engagement element; a second pressure regulating unit outputting the forward range pressure through pressure regulation to a hydraulic servo of the second friction engagement element; a first oil path providing communication of the forward range pressure of the range pressure generating unit with the first pressure regulating unit; a second oil path providing communication of the forward range pressure of the range pressure generating unit with the second pressure regulating unit; and a delay mechanism delaying discharge of the second oil path than discharge of the first oil path when the another shift range is changed from the forward range based on the shift lever operation and the range pressure generating unit discharges the forward range pressure.