Patent ID: 7935015

Claim:
A control device for controlling a vehicle driving apparatus, the vehicle driving apparatus including a continuously variable transmission portion that has a differential mechanism for distributing engine output to a first electric motor and a transmitting member, and a second electric motor arranged on a power transmitting path from the transmitting member to drive wheels, being operable as an electrically operated continuously variable transmission, the control device comprising: a differential action limiting device that is disposed in the differential mechanism and limits the differential action of the differential mechanism in order to limit the operation of the continuously variable transmission portion as the electrically operated continuously variable transmission, and differential action limiting means that, during engine running using an engine as a drive source, changes a half-transmitting capacity state of the differential action limiting device when limiting the operation of the continuously variable transmission portion as the electrically operated continuously variable transmission, wherein the differential action limiting device is an engaging device, and the differential action limiting means controls a half-engaged state of the differential action limiting device for reducing a reaction force to be born by the first electric motor in order to change the ratio between the output electrically transmitted from the first electric motor to the second electric motor in the continuously variable transmission portion, and the output mechanically transmitted to the transmitting member in the continuously variable transmission portion.