Electromagnetic fuel injector and control method thereof

A fuel injection apparatus comprising:

• a controller to output an injection time command signal and an opening movement time command signal to command a timing to change an electric current flowing state of a coil of an electromagnetic fuel injection valve, from a flowing state of the coil of said electromagnetic fuel injection valve corresponding to an opening movement from a closed state to an open state of a fuel passage of said electromagnetic fuel injection valve, to a flowing state corresponding to an open movement holding state to keep said fuel passage opened;
• and
• a control circuit to control an electric current flowing in said coil corresponding to said opening movement and said open movement holding state by receiving said timing command signal from said controller,
• wherein said controller sends both said injection time command signal and said opening movement time command signal through the same signal line to said control circuit.