US Patent 7935021 Controller apparatus for vehicular device system

A vehicle-starting-engine-torque restricting device is provided to restrict engine torque upon starting of a vehicle with an engine used as a vehicle drive power source, so that a required output of a first electric motor which generates a reaction force corresponding to the engine torque can be made smaller than when the engine torque is not restricted. Namely, the vehicle-starting-engine-torque restricting device eliminates a need of increasing the maximum output of the first electric motor to generate the reaction force corresponding to the engine torque, making it possible to reduce the required size of the first electric motor.