Patent ID: 8364359

Claim:
A control apparatus for an automatic transmission, comprising: a stepwise variable transmission mechanism including a plurality of engagement sections, each of the engagement sections being engaged according to an increase in a capacity of a corresponding one of the engagement sections while being released according to a reduction in the capacity of corresponding another of the engagement sections and a target gear shift state being determined according to a combination of release and engagement of the respective engagement sections; and a control section configured to control a gear shift state of the stepwise variable transmission mechanism to become equal to the target gear shift state by releasing a first engagement section of the engagement sections according to a reduction in the capacity of the first engagement section and, simultaneously, by engaging a second engagement section of the engagement sections according to an increase in the capacity of the second engagement section, in accordance with a torque inputted to the stepwise variable transmission mechanism, the control section, during an inertia phase when the stepwise variable transmission mechanism is gear shift controlled, making either one of the first and second engagement sections function to be a gear shift state control side engagement section and being configured to increase the capacity of a gear shift non-control side engagement section which is the other of the first and second engagement sections when determining that it is impossible to make the gear shift state of the stepwise variable transmission mechanism follow up the target gear shift state at the gear shift state control side engagement section.