Control apparatus for vehicle drive-force transmitting apparatus

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 is configured to transmit a drive force of the drive force source toward the drive wheels, and includes (a) a continuously-variable transmission mechanism including a primary pulley, a secondary pulley and a transfer element looped over the primary and secondary pulleys, and (b) an engagement device disposed between the continuously-variable transmission mechanism and the drive wheels in a drive-force transmitting path section,
• wherein said control apparatus comprises:
• a filter processing portion configured to make a filter processing on a detected value of an output rotational speed of the continuously-variable transmission mechanism so as to delay change of the detected value, and configured to output, as a processed output-rotational-speed value, the detected value of the output rotational speed on which the filter processing has been made;
• a transmission shifting control portion configured to calculate a gear ratio of the continuously-variable transmission mechanism, based on the processed output-rotational-speed value and a detected value of an input rotational speed of the continuously-variable transmission mechanism;
• and
• an update inhibiting portion configured to inhibit said transmission shifting control portion from updating the gear ratio of the continuously-variable transmission mechanism, when the processed output-rotational-speed value is in a low rotational speed range that is lower than a high rotational speed range with an absolute value of a rate of change of the processed output-rotational-speed value being not smaller than a given value, and
• wherein said update inhibiting portion is configured, also when the processed output-rotational-speed value is in said low rotational speed range with the absolute value of the rate of change of the processed output-rotational-speed value being smaller than the given value, to inhibit said transmission shifting control portion from updating the gear ratio of the continuously-variable transmission mechanism, if a certain operation that increases the absolute value is being executed.