To properly learn a learning value used in controlling an intake adjusting means of a throttle valve, etc., without degrading the fuel consumption even when an internal combustion engine has less chance to make idling.

An engine 11 is in operation in the condition that a hybrid car is stopped or in low-speed running, and when the accelerator depression amount varies around the value near zero, the target output torque of the engine 11 is not constant but varies in compliance with the accel. depression amount. Even in this situation, the actual output torque of the engine 11 varying in compliance with the accel. depressing amount can be determined from the amperage of the control current for driving under control a generator 18. Accordingly the intake correcting amount for controlling the degree of opening of a throttle valve 39 can be increased or decreased so that the actual output torque approaches the target output torque, and also it is possible to increase or decrease (learn) the learning value for controlling the degree of opening so that the intake correcting amount becomes a value within the specified range.