Control device for vehicle drive apparatus

A control device for controlling a vehicle driving apparatus, the vehicle driving apparatus including a differential portion that includes 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 differential device, 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 differential portion as the electrically operated differential device;
• and
• differential action limiting means that, during vehicle engine running using the engine as a drive source, changes a half-transmitting capacity state of the differential action limiting device when limiting the operation of the differential portion as the electrically operated differential device,
• 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 differential portion, and the output mechanically transmitted to the transmitting member in the differential portion.

A control device for controlling a vehicle driving apparatus, the vehicle driving apparatus including a differential mechanism for distributing engine output to a first electric motor and a transmitting member, and a second electric motor operatively connected to drive wheels, the control device comprising:

• an engaging device that is disposed in the differential mechanism, and selectively switches the differential mechanism between a differential state and a non-differential state;
• reaction force controlling means that, in the differential state of the differential mechanism, executes a reaction force control against the engine output by an output control that controls the output of the first electric motor, and a slip control that brings the engaging device into a slip engaged state for reducing a reaction torque to be born by the first electric motor, for causing the transmitting member to generate output;
• and
• share ratio changing means that changes a share ratio between a share part of the reaction torque controlled by the output control of the first electric motor, and a share part of the reaction torque controlled by the slip control of the engaging device.

A control device for controlling a vehicle driving apparatus, the vehicle driving apparatus including a differential mechanism for distributing engine output to a first electric motor and a transmitting member, and a second electric motor operatively connected to drive wheels, the control device comprising:

• an engaging device that is disposed in the differential mechanism, and selectively switches the differential mechanism between a differential state and a non-differential state;
• required drive force setting means that sets a required drive force required for a vehicle in accordance with an accelerator opened magnitude;
• reaction force controlling means that, in the differential state of the differential mechanism, executes a reaction force control against the engine output by an output control controlling the output of the first electric motor, and a slip control bringing the engaging device into a slip engaged state, for causing the transmitting member to generate output;
• and
• output controlling means that controls the output generated in the transmitting member by the reaction force controlling means and the output of the second electric motor to generate the required drive force set by the required drive force setting means.