Patent ID: 8123654

Claim:
A hybrid driving apparatus comprising: a power generator electrically connected to a power storage device; an output distribution mechanism for distributing a part of an output of a power source to said power generator and for distributing the remainder of said output to a rotation output shaft; a transmission mechanism for selectively providing a plurality of gear ratios by a combination of engaging and releasing of a plurality of frictional engagement devices; an electric motor electrically connected to said power storage device and mechanically connected to said rotation output shaft via said transmission mechanism; an electric motor control unit for controlling an output of said electric motor, said electric motor control unit executing, in a shift operation of changing a first gear ratio to a second gear ratio larger than said first gear ratio, a first control operation for controlling a torque of said electric motor to raise a rotational speed of said electric motor to a target value corresponding to said second gear ratio, and a second control operation subsequent to said first control operation for reducing the torque of said electric motor to or below a predetermined value; a power generator control unit for restraining increase in quantity of the power generated by said power generator in accordance with execution of said second control operation by said electric motor control unit during limitation of charging of said power storage device; a determination unit for determining whether or not changes in output of said electric motor caused by operation switching from said first control operation to said second control operation is allowed, during limitation of charging of said power storage device and prior to said electric motor control unit executes said second control operation; and a limiting unit for limiting the torque of said electric motor in said first control operation to be smaller than that attained when said changes in output are allowed in said first control operation, if said determination unit determines that said changes in output are not allowed.