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. 17, 1984
Filed:
Aug. 10, 1982
Jean-Francois Latapie, Roquettes, FR;
Equipements Automobiles Marchal, Issy-les-Moulineaux, FR;
Abstract
An electronic device for briefly enabling an 'anti-pinging' vibration detector used for controlling the ignition timing of an internal combustion engine to advance the generated ignition signal in each cycle in relation to the top dead center point of the piston on compression stroke, by a value which is variable according to the engine speed of rotation, receives an input signal and supplies a periodic 'detector active' signal whose start and finish are, in each period, positioned in relation to the top dead center in said cylinder with a predetermined error margin. The device comprises a first stage effective to supply a 'detector enabling' signal which defines the start of said 'detector active' signal with a first time shift in relation to said input signal and a second stage effective to receive the said 'detector enabling' signal from said first stage and to generate a 'detector disabling' signal which defines the finish of said 'detector active' signal with a second time shift in relation to said input signal. The 'detector enabling' signal supplied by said first stage is displaced in relation to said input signal by an interval which is the sum of a constant first interval and of a second interval which corresponds to a constant angle of engine rotation.