A control apparatus for a drive-force transmitting apparatus that is to be provided in a vehicle having a drive force source and drive wheels,
- wherein the drive-force transmitting apparatus includes:
- an input rotary member to which a drive force is to be transmitted from the drive force source;
- an output rotary member from which the drive force is to be outputted to the drive wheels;
- a gear mechanism configured to provide at least one gear ratio;
- a continuously-variable transmission mechanism including a primary pulley, a secondary pulley, and a transfer element that is looped over the primary and secondary pulleys, such that the primary pulley includes a primary hydraulic actuator configured to apply a primary thrust, based on which the transfer element is to be clamped by the primary pulley, and such that the secondary pulley includes a secondary hydraulic actuator configured to apply a secondary thrust, based on which the transfer element is to be clamped by the secondary pulley;
- and
- first and second engagement devices,
- wherein the drive-force transmitting apparatus defines a plurality of drive-force transmitting paths that are provided in parallel with each other between the input rotary member and the output rotary member such that the drive force is to be transmitted from the input rotary member to the output rotary member through the drive-force transmitting paths,
- wherein the plurality of drive-force transmitting paths include a first drive-force transmitting path that is to be established by engagement of the first engagement device, such that the drive force is to be transmitted by the gear mechanism through the first drive-force transmitting path when the first drive-force transmitting path is established by the engagement of the first engagement device,
- wherein the plurality of drive-force transmitting paths includes a second drive-force transmitting path that is to be established by engagement of the second engagement device, such that the drive force is to be transmitted by the continuously-variable transmission mechanism through the second drive-force transmitting path when the second drive-force transmitting path is established by the engagement of the second engagement device,
- wherein said control apparatus comprises a transmission shifting control portion configured to calculate, based on an input torque inputted to the continuously-variable transmission mechanism, a thrust ratio which is a ratio of the secondary thrust to the primary thrust and which corresponds to a target gear ratio of the continuously-variable transmission mechanism,
- wherein, when the target gear ratio is a highest gear ratio of the continuously-variable transmission mechanism during running of the vehicle with the second engagement device being completely released, said transmission shifting control portion is configured to set a first value of the thrust ratio, which is used when calculating a target value of the secondary thrust based on a lower limit value of the primary thrust that is not smaller than a centrifugal thrust acting on the primary pulley, and to set a second value of the thrust ratio, which is used when calculating a target value of the primary thrust based on the target value of the secondary thrust, such that the first value of the thrust ratio is set to a first-difference increasing value that causes a first difference between the lower limit value of the primary thrust and the target value of the secondary thrust to be larger, than a value that corresponds to the highest gear ratio as the target gear ratio, and such that the second value of the thrust ratio is set to a second-difference increasing value that causes a second difference between the target value of the secondary thrust and the target value of the primary thrust to be larger, than a value that corresponds to the highest gear ratio as the target gear ratio.