Method and device for triggering a fuel injector

A device for triggering a solenoid valve, the solenoid valve including a valve needle and a magnetic coil, the device comprising:

• a first arrangement configured to activate a triggering phase, the triggering phase including a pull-up phase and a holding phase, the pull-up phase including an application to the magnetic coil of a current at a first intensity so that the valve needle of the solenoid valve is caused to open, the holding phase including an application to the magnetic coil of a current at a second intensity so that the valve needle is held open;
• and
• a second arrangement coupled to the first arrangement and configured to apply to the magnetic coil a plurality of booster pulses at selectable times during the triggering phase.

A method for triggering a high-pressure solenoid injection valve for directly injecting gasoline into a combustion engine, the solenoid injection valve including a valve needle and a magnetic coil, the method comprising:

• activating a triggering phase, the triggering phase including a pull-up phase and a holding phase, the pull-up phase including applying to the magnetic coil a current at a first intensity so that the valve needle is caused move to an open state, the holding phase including applying to the magnetic coil a current at a second intensity so that the valve needle is held in the open state, the second intensity being less than the first intensity;
• and
• activating a booster phase during the triggering phase, the booster phase including applying a plurality of pulses in succession to the magnetic coil at selectable times.