APPARATUS FOR CONTROLLING PEAK AND HOLD TYPE INJECTOR OF CAR

摘要

A peak and hold type injector control device of a vehicle is provided to equal injection time according to injection by varying control duty value of hold signal which is pulse width-modulated according to current amount flowing for hold time in an injector after a peak time is finished. A peak and hold type injector control device of a vehicle comprises: an injector unit(105) equipped with a plurality of injectors; an output driver(103) providing injector operation signal to each injector; and an engine control unit(101) outputting peak and hold signals as each serial signal to the output driver. Peak time and hold time are provided to the peak and hold signal according to programmed injector control sequence. In the engine control unit, PWM signals are transferred to the injector until reaching to target current value.