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:
Jul. 02, 2013
Filed:
Oct. 21, 2009
Stefano Sgatti, Imola, IT;
Nicolò Cavina, Bologna, IT;
Filippo Cavanna, Bologna, IT;
Giancarlo Bisanti, Gagliano Del Capo, IT;
Stefano Sgatti, Imola, IT;
Nicolò Cavina, Bologna, IT;
Filippo Cavanna, Bologna, IT;
Giancarlo Bisanti, Gagliano Del Capo, IT;
Magneti Marelli S.p.A., Corbetta, IT;
Abstract
A method of controlling an internal combustion engine having at least one cylinder defining a variable-volume combustion chamber; and a rotating crankshaft powered by a piston sliding inside the cylinder; the control method including the steps of: determining a recording window expressed in engine angle degrees and having a start engine angle and a stop engine angle; acquiring and memorizing the intensity of sound pressure waves, generated by the internal combustion engine as a function of an engine angle, by means of at least one sound pressure sensor and within the recording window; and estimating the value of at least one operating parameter of a part of the internal combustion engine by analysing the intensity of the sound pressure waves in the recording window.