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:
Dec. 08, 1981
Filed:
Aug. 28, 1979
Giampaolo Garcea, Milan, IT;
Edoardo Rogora, Milan, IT;
Alfa Romeo S.p.A., Milan, IT;
Abstract
A device is disclosed for refining the adjustment of the angle of ignition advance in an internal combustion engine. The angles of rotation of the crankshaft relative to the top dead center of an engine cylinder, relative to the start of ignition and the completion of combustion are detected electronically and signals are processed which are expressive of the magnitudes of said angles: these magnitudes are compared in a comparison circuit which is calibrated according to an optimum preselected ratio between the two angles. The electronic comparison circuit is capable of commanding the controlled-ignition system of the engine so as to modify the angle of advance of ignition continually, keeping it constantly to the desired optimum value.