Patent ID: 8152667
Filing Date: 2012-04-10
Classification: B60K,B60W,F16H,Y02T,Y10T

Abstract:
1. A control device for a vehicular drive system, the drive system including an electric differential portion having a first element connected to an engine, a second element connected to a first electric-motor and a third element connected to a power transmitting member for distributing an output of the engine to the first electric-motor and the power transmitting member; a transmission portion disposed in a power transmitting path between the power transmitting member and drive wheels; and a shift operation device having a running position as a settable shift position to place the power transmitting path in a power transmitting state; the control device comprising: a reverse drive force suppression control function for preventing an output member of the transmission portion from inputting a reverse drive force to the electric differential portion, when a rotational direction of the drive wheels becomes opposite to the rotational direction in the running position set by the shift operation device, wherein the reverse drive force suppression control function is operative to prevent the output member of the transmission portion from inputting a reverse drive force to the electric differential portion when an output rotation speed relevant value of the vehicular drive system exceeds a given rotation speed, and the given rotation speed is altered depending on a speed ratio of the transmission portion such that the greater the speed ratio of the transmission portion, the lower will be the given rotation speed.