METHOD FOR DETERMINING THE ROTATION SPEED OF A SUPERCHARGER IN AN INTERNAL COMBUSTION ENGINE

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Abstract

A method for determining the rotation speed of at least one supercharger (14) in an internal combustion engine (1); the method includes detecting, by means of a microphone (25), the intensity of a sound signal generated by the rotation of the supercharger (14) and determining the evolution of the frequency content of the sound signal over time; determining, completely irrespective of the sound signal, a first estimation of the rotation speed of the supercharger (14) by means of which an interval of plausible frequencies for the rotation speed of the supercharger (14) may be determined; determining a second estimation of the rotation speed of the supercharger (14) according to the frequency content of the sound signal within the interval of plausible frequencies and validating the second estimation of the rotation speed of the supercharger (14) by means of the first estimation of the rotation speed of the supercharger (14).

Classe Tecnologica

G - Physics

Patent Office

United States Patent and Trademark Office

Numero Deposito

US2012010848

Anno Deposito

2010

Anno Concessione

2012

Inventori Pugliesi

  • De Cesare Matteo

Tutti gli inventori

  • Gabriele Serra
  • Matteo De Cesare
  • Federico Stola

Titolari pugliesi

Tutti i titolari

  • Magneti Marelli S.p.A.