Patent ID: 8296026

Claim:
A control apparatus for a powertrain that includes an automatic transmission that forms a first gear by engaging a one-way clutch and forms a second gear, in which a gear ratio is smaller than a gear ratio in the first gear, by engaging a predetermined frictional engagement element, the control apparatus comprising: a slip detection unit that detects a slip state in which a first rotation member and a second rotation member of the one-way clutch rotate relative to each other, in a control state in which the first gear is formed; an engagement condition determination unit that determines whether a predetermined condition for engaging the predetermined friction engagement element to form the second gear is satisfied by an increase in a rotational speed difference between the first rotation member and the second rotation member, when the slip state is detected; and an engagement control unit that engages the predetermined frictional engagement element if it is determined that the condition is satisfied when the slip state is detected.