Fuel injection valve drive control apparatus

A fuel injection valve drive control apparatus in which a valve opening current that is large enough to open an electromagnetic fuel injection valve, consisting of a plunger movable relative to a fuel injection port and an excitation coil surrounding the plunger, is supplied to said coil to open the valve, and thereafter, instead of continuing to supply said valve opening current, a lesser holding current required to keep said valve open is supplied to said coil,

• the fuel injection valve drive control apparatus comprising:
• a first solid state switch element connected in series with said excitation coil for controlling the current supply to said coil,
• a valve driver for performing on-off control of said first solid state switch element to supply the valve opening current or the holding current to said coil,
• means, connected in parallel with said coil through a second solid state switch element, operative when said first solid state switch element is turned off after it was turned on, for feeding back to said coil, through said second solid state switch element, electromagnetic energy stored in said coil and
• means for turning on said second solid state switch element after the elapse of a predetermined time following the start of supplying the holding current.