Method for recording injection process of fuel injector of internal combustion engine involves noting sound curve of appropriate signal over a period containing injection process and generating temporal deflection of noted signal

摘要

The method involves noting one of the sound curve of appropriate signal over a period containing the injection process and generating temporal deflection of the noted signal. A temporal second maximum of the temporally derived signal is recorded and is evaluated in terms of allocation of stopping the nozzle needle during its closing movement. The temporal first maximum of the temporally derived signal is recorded and evaluated in terms of allocation of attaching the nozzle needle during its opening movement. An independent claim is also included for recording the injection process fuel injector of internal combustion engine.