Driving structure of piezoelectric fuel injector

The invention relates to a driving structure of a piezoelectric fuel injector. The driving structure is characterized by including an actuator driving circuit module, a processor MCU, a voltage difference value gradient monitoring circuit and a short circuit protection circuit. A driving voltage difference is formed by simultaneously charging and discharging the high and low ends of the actuator by means of the voltage non-mutation feature of a capacitor, namely, a voltage difference is formed by taking the voltage at the high end of the actuator as the reference voltage to control the discharging of the low end. During the establishment of driving, the voltage difference slope of the high end and the low end of the capacitor is determined by an external capacitance compensation means to control the current accuracy. The driving structure facilitates the stability of driving current and has no sensing value energy storage requirement on the filtering inductance of a driving circuit; and in addition, the curre