Method for evaluating the quantity of fuel injected in an internal combustion engine

摘要

The method comprises the steps of:
- acquiring the crankshaft speed signal while one fuel injector is energized for a determined period of time (ET) in which all the other fuel injectors are de-energized,
- processing the acquired crankshaft speed signal so as to obtain signals or data (A) representative of the amplitude of a predetermined harmonic component of the crankshaft speed signal; and
- calculating the power (RMS/MS) of said harmonic component, and assuming the calculated power value (C) as an estimation of the quantity of fuel actually injected by the energized injector in said predetermined period of time (ET).