DRIVER OF DIRECT ACTING VALVE FOR INTERNAL COMBUSTION ENGINE

It is an object of the present invention to provide a drive unit for a direct-acting valve for internal combustion engines, by which quiet internal combustion engine can be obtained, with the noise suppressed. This system comprises an inlet valve 8 arranged slidably near an inlet port 4 of an internal combustion engine 12 for driving the inlet port to open and close, an electromagnetic actuator 1 that drives the inlet valve to open and close, and a current control unit 11 that controls a driving current supplied to the electromagnetic actuator, wherein the current control unit continuously supplies the driving current having a specific value to the electromagnetic actuator, based on the operation condition of the internal combustion engine.