Control device of hybrid system

A control device of a hybrid system which can output a power output from an internal combustion engine by its operation and a power output from an electric motor by its operation selectively or simultaneously, the control device selectively performing first and second modes for concomitantly using an EV mode for performing the operation of the electric motor with the operation of the engine being stopped and an HV mode for selectively performing the operation of the engine and its stop with the electric motor being operated by switching the EV mode and the HV mode according to a predetermined switching condition, and the predetermined switching condition being set such that a proportion of an operation time of the engine occupying a total time of the first mode is smaller than that occupying a total time of the second mode,

• wherein referring to the power output from the hybrid system as hybrid system power, when the first mode is selected and an actual acceleration pedal manipulation amount is smaller than a predetermined first manipulation amount, an increase amount of the hybrid system power relative to the increase amount of the actual acceleration pedal manipulation amount is made larger than that when the second mode is selected.