The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 2008
Filed:
Mar. 03, 2006
Nicola Cesario, Casalnuovo di Napoli, IT;
Paolo Amato, Limbiate, IT;
Maurizio Di Meglio, Casoria, IT;
Francesco Pirozzi, Napoli, IT;
Giovanni Moselli, Grumo Nevano, IT;
Ferdinando Taglialatela-scafati, Giugliano, IT;
Francesco Carpentieri, San Giorgio del Sannio, IT;
Nicola Cesario, Casalnuovo di Napoli, IT;
Paolo Amato, Limbiate, IT;
Maurizio Di Meglio, Casoria, IT;
Francesco Pirozzi, Napoli, IT;
Giovanni Moselli, Grumo Nevano, IT;
Ferdinando Taglialatela-Scafati, Giugliano, IT;
Francesco Carpentieri, San Giorgio del Sannio, IT;
STMicroelectronics S.R.L., Agrate Brianza (MI), IT;
Abstract
A method of sensing the air/fuel ratio in a combustion chamber of an internal combustion engine that may be easily implemented by a respective low-cost device includes a pressure sensor and a learning machine that generates a sensing signal representing the air/fuel ratio by processing the waveform of the pressure in at least one cylinder of the engine. In practice, the learning machine extracts characteristic parameters of the waveform of the pressure and as a function of a certain number of them generates the sensing signal.