Method for high frequency (HF) determination of piezoactor voltage of piezoinjectors of fuel injection system of internal combustion engine by scanning, with numerous energising of actor

摘要

Method carries out numerous energising of actuator, with each only one, or very few scannings carried out. On each time-sequential energising is carried out shift of each scanning point. From determined scanning values, at each energising, is formed overall energising voltage course. Preferably, time point shift for scanning takes place with high time resolution. Typically, numerous energising take place under always the same operating conditions and constant rail (high pressure store) pressure and/or (dis)charge time of injector actor. INDEPENDENT CLAIM is included for equipment for determining energising voltage course of injection piezoactor.