Φκ™λό™ό ϊΦµΦΦΤ - Controller General of Patents, Designs, and ...

(12) PATENT APPLICATION PUBLICATION
(19) INDIA
(21) Application No.2162/DEL/2009 A
(22) Date of filing of Application :19/10/2009 (43) Publication Date : 18/06/2010
(54) Title of the invention : METHOD OF MICROPHONE SIGNAL CONTROLLING AN INTERNAL COMBUSTION ENGINE
(51) International classification :F02D 41/00
(31) Priority Document No :08425681.7
(32) Priority Date :21/10/2008
(33) Name of priority country
:EUROPEAN
(71)Name of Applicant :
1)MAGNETI MARELLI S.P.A
Address of Applicant :61/63 VIALE ALDO BORLETTI
CORBETTA ITALY
(72)Name of Inventor :
1)SGATTI STEFANO
2)CAVING NICOLO
3)CAVANNA FILIPPO
4)BISANTI GIANCARLO
UNION
(86) International Application No
:NA
Filing Date
:NA
(87) International Publication No :NA
(61) Patent of Addition to Application Number :NA
Filing Date
:NA
(62) Divisional to Application Number
:NA
Filing Date
:NA
(57) Abstract :
A method of controlling an internal combustion engine (2) having at least one cylinder {3) defining a variable-volume combustion
chamber; and a rotating crankshaft (15) powered by a piston (14) sliding inside the cylinder (3); the control method including the steps
of: determining a recording window (W) expressed in engine angle degrees (a) and having a start engine angle (αstart) and a stop
engine angle (αstop) ; acquiring and memorizing the intensity (S) of sound pressure waves, generated by the internal combustion
engine (2) as a function of an engine angle (a) , by means of at least one sound pressure sensor (21a) and within the recording window
(W); and estimating the value of at least one operating parameter of a part of the internal combustion engine (2) by analysing the
intensity (S) of the sound pressure waves in the recording window (W).
No. of Pages : 30 No. of Claims : 15
The Patent Office Journal 18/06/2010 15871