Patent ID: 7666113
Filing Date: 2010-02-23
Classification: F16H

Abstract:
1. A control apparatus of an automatic transmission performing a down-shift by changeover between first and second frictional engagement elements that achieve higher and lower speed gear stages before and after the down-shift respectively during a vehicle power-off travel, comprising: a target value determination section setting a total torque capacity calculation section calculating a total torque capacity required of the first and second frictional engagement elements to obtain the target difference revolution speed set by the target value determination section; a distribution ratio determination section setting a distribution ratio of the total torque capacity to the first and second frictional engagement elements; an individual torque capacity calculation section calculating individual torque capacities respectively required of the first and second frictional engagement elements based on the total torque capacity calculated by the total torque capacity calculation section and the distribution ratio set by the distribution ratio determination section; and an engagement control section controlling engagement conditions of the first and second frictional engagement elements in accordance with the individual torque capacity calculated by the individual torque capacity calculation section.