INTAKE/EXHAUST VALVE CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

An intake/exhaust valve control device 1 for an internal combustion engine including a cylinder having an intake valve and an exhaust valve includes: solenoids 9 to 16 for driving at least one of the intake valve and the exhaust valve; a battery 6 for supplying an electric current to the solenoids 9 to 16, a battery state predicting unit 34 for predicting the voltage state of the battery 6; and an energization start timing setting unit 32 for setting the current carrying start timing of the battery 6 with respect to the solenoids 9 to 16 based on the result of the prediction by the battery state predicting unit 34. According to the intake/exhaust valve control device 1, since it is possible to obtain the amount of energization necessary for driving the solenoids 9 to 16 at an appropriate timing, it is possible to secure the responsiveness of the solenoids 9 to 16.