Patent ID: 9643598
Date: 2017-05-09
CPC Classifications: B60W,F16H,Y10S

Claim:
1. A control device for a vehicle drive device that controls the vehicle drive device including an input member drivably coupled to an internal combustion engine serving as a drive force source for wheels, an output member drivably coupled to the wheels, a speed change mechanism that includes a plurality of engagement elements to establish a plurality of shift speeds in accordance with an engagement/disengagement state of the plurality of engagement elements and transfers rotation of the input member to the output member while changing a speed of the rotation with a speed ratio of each shift speed, and a rotary electric machine drivably coupled to the wheels not via the speed change mechanism, comprising: a neutral travel control section that performs neutral travel control during a state in which the wheels are rotating by a drive force of the rotary electric machine, the neutral travel control controlling disengageable engagement elements into a disengaged state, and by executing the neutral travel control, a state of the speed change mechanism is controlled into a neutral state where transfer of a drive force between the input member and the output member is not performed; a determination section that determines and compares each of a plurality of operation indication values, each that represents an operating state of one of target actuators, which are actuators that control the engagement/disengagement state of the disengageable engagement elements, with a corresponding one of a plurality of determination values set in association with a corresponding one of the target actuators, and determines on the basis of comparison results whether or not a wheel transfer torque transferred from the speed change mechanism to the wheels falls within the allowable range during the execution of the neutral travel control; and wherein the disengageable engagement elements include at least one of the engagement elements which are necessary to be engaged in order to establish one of the shift speeds and all engagement elements which are not necessary to be engaged to establish the one of the shift speeds, the determination section executes determination for all the disengageable engagement elements during execution of the neutral travel control.