PURPOSE: To prevent worsening of emission at a high load, by providing an intake temperature sensor detecting intake temperature to a fuel injection timing controller and correcting the displacement of an actuator of a fuel injection timing control means in accordance with an output of said sensor.

CONSTITUTION: A fuel injection quantity is calculated by an engine speed obtained from a signal of an engine speed sensor 17, a signal of an accelerator sensor 32, etc., then the basic fuel injection timing is obtained, further a correction amount of fuel injection timing corresponding to intake temperature detected by an intake temperature sensor 22 is obtained. When a control pulse signal of duty Di is output to a driver circuit 52, a pulse signal of duty Di is output to a timing control valve 13 at a prescribed period, and pressure of a pressure chamber in th front of a timer position 10 is adjusted in accordance with the duty Di to move the piston 10 to a position balanced with spring tension. Then a roller ring 4 is rotatively moved to change the timing, in which a roller 5 and a cam surface of a cam plate 6 are adapted, and change the fuel injection timing.