Patent ID: 9650969
Date: 2017-05-16
CPC Classifications: F02D

Claim:
1. A monitoring method for monitoring a fuel injector of an internal combustion engine of a vehicle, the injector comprising a piezoelectric actuator which acts on a valve means in order to open or close the injector, allowing or stopping the injection of fuel into a combustion chamber of the engine, respectively, the fuel injector comprising an actuator play (J), the vehicle comprising an on-board engine control unit for carrying out the monitoring method, the monitoring method comprising the following steps, during normal operation of the vehicle: a step of measuring a plurality of compensation times of the actuator play (T a step of calculating a parameter representative of the current actuator play (PAR(J a step of comparing the parameter representative of the calculated current actuator play (PAR(J a step of transmitting a warning message in the event of the reference parameter (PAR(J the parameter representative of the current actuator play (PAR(J