Patent ID: 8355848
Filing Date: 2013-01-15
Classification: F16H

Abstract:
1. A hydraulic control device for an automatic transmission, the automatic transmission having a vehicle start-up engagement element hydraulically engaged for vehicle start-up when a shift lever is moved from a non-drive range position to a drive range position, the hydraulic control device comprising: a target pressure setting section configured to, when the shift lever is moved from the non-drive range position to the drive range position, calculate a target value of hydraulic pressure to be supplied to the vehicle start-up engagement element at a completion of an engagement of the vehicle start-up engagement element based on a transmission input torque of the automatic transmission and to correct the target value periodically based on the transmission input torque until the completion of the engagement of the vehicle start-up engagement element; and a hydraulic pressure control section configured to control the hydraulic pressure in such a manner that the hydraulic pressure supplied to the vehicle start-up engagement element reaches the corrected target value at the completion of the engagement of the vehicle start-up engagement element.