Patent ID: 9695933
Date: 2017-07-04
CPC Classifications: B60Y,F16H,Y02T

Claim:
1. An automatic transmission control device comprising: an automatic transmission having an engagement clutch disposed in a drive system of a vehicle and capable of meshing engagement as a coupling element; and a shift controller configured to execute a shift control of the automatic transmission, the engagement clutch including a first engagement member connected to a transmission input shaft and a second engagement member connected to a transmission output shaft and configured to mesh with the first engagement member, the shift controller being configured, when engaging the engagement clutch for shifting, to enable the first engagement member and the second engagement member to mesh with each other, to set a target differential rotation speed to impart a predetermined differential rotation between an input rotation speed representative of a rotation speed of the first engagement member and an output rotation speed representative of a rotation speed of the second engagement member, and configured to set the target differential rotation speed to one of a state in which the input rotation speed is higher than the output rotation speed, and a state in which the input rotation speed is lower than the output rotation speed, and, when engaging the engagement clutch for shifting and the vehicle is decelerating, configured to set the input rotation speed lower than the output rotation speed.