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:
Nov. 18, 1980
Filed:
Mar. 01, 1979
Edoardo Rogora, Milan, IT;
Giancarlo De Angelis, Milan, IT;
Alfa Romeo S.p.A., , IT;
Abstract
A pre-ignition detecting device for an internal-combustion is disclosed, which belongs to the general type of ionization-detectors, but employs no supplementary probe near the spark plug(s). The device is electronic and comprises a circuitry in which a switching stage is capable of discriminating the signals indicating ionization at the electrodes in the cases in which the contact-breaker is open from those indicating ionization in the opposite case, that is, when pre-ignition occurs. Display devices can visualize the pre-ignition ripples and an operative stage could actuate, if so desired, the advance of ignition control in order to restore the engine to its normal run whenever necessary.