PURPOSE: To optimize injection timing with a control apparatus by locating an adjusting device with a space from a stopper at any operation conditions for obtaining the signals for actual injection timing at any time.

CONSTITUTION: Movement of an adjusting device 37 is limited by a stopper 52 at least in the direction to retard the instant of injection timing, and a recognition device that ascertains the abutment of the adjusting device 37 with the stopper 52 as a signal is arranged. In the instant of the signal generation, additional change of movement adjustment of the adjusting device 37 is controlled. During operation of fuel injection pump, the adjusting device 37 is so kept that a space between the stopper 52 is generated, and the space is possible to bias the adjusting device 37 during continuous delivery stroke of pump plunger by a control device 46.