| 摘要 |
A control system for a hybrid vehicle accurately determines the start (i.e. ignition) of an internal combustion engine and suppresses the peak PK in the actual rotational speed. The hybrid vehicle is provided with a motor control unit for, at the time of starting the internal combustion engine, driving the motor to rotate at a target motor rotational speed and with a vehicle control unit for, when the rotational speed of the internal combustion engine has reached a predetermined value, outputting an ignition command to start the internal combustion engine. After the ignition command is output to the internal combustion engine, the vehicle control unit calculates the difference between the target rotational speed of the motor and the actual rotational speed of the motor, and if the difference exceeds a predetermined value, determines that the ignition of the internal combustion engine has been effected. In this manner, the start of the internal combustion engine can be accurately detected. Once start of the internal combustion engine has been confirmed, the motor is controlled accordingly. As a result, the peak PK is suppressed.
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