Injector closed loop control

A fuel injector comprising:

• an elongated body extending along a main axis from a top end to an injection tip end, said elongated body housing a needle valve member axially moving, in use, under the influence of pressure differences generated by the displacement of an electrovalve opening or closing a spill orifice, the needle valve member moving between a closed position wherein a closing face of the needle valve member abuts a seat of the elongated body and a fully open position wherein said closing face is lifted away from said seat;
• and
• an electrical connector comprising:
• a plastic moulded body defining a central main member for engaging a complementary connector, and also defining two lateral mounting bush which are each provided with a hole for engaging a fixation screw tightened in a face of said fuel injector;
• a knock sensor adapted to deliver data representative of operation of said fuel injector and integrally overmoulded in one of the lateral mounting bush, said knock sensor comprising a piezoelectric member arranged between a base member and a seismic member;
• and
• terminals electrically connected to the electrovalve;
• wherein the electrical connector is connected to an electronic unit and the knock sensor is configured to deliver a signal representative of a knock generated by abutment of the closing face against the seat when the needle valve member reaches the closed position.