Stmicroelectronics S.r.l.

Ferdinando Taglialatela

Nicola Cesario

Francesco Pirozzi

Giovanni Moselli

Paolo Amato

Mario Lavorgna

Maurizio Di Meglio

Francesco Carpentieri

A knocking presence evaluation circuit in an internal combustion engine having a pressure sensor facing a combustion chamber for each cylinder in the engine and suitable to produce a pressure signal, the circuit having an input terminal; a processing block connected by the input terminal to the pressure sensor and receiving the pressure signal, the processing block performing a processing of the pressure signal for isolating oscillations and generating a derived pressure signal; an acquisition block connected to the processing block and receiving the derived pressure signal and generating first and second measure signals, respectively corresponding to a number and a total duration of digital pulses, from the derived pressure signal; and a soft-computing block connected to the acquisition block and receiving the first and second measure signals and outputting a knocking intensity index, calculated by soft-computing techniques, starting from the first and second measure signals.

Knocking presence evaluation circuit for an internal combustion engine, knocking identification and control system and corresponding pressure signal processing method

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Giugliano, Italy

Ferdinando Taglialatela