EP 0829642 B1 20040303 - Method for detecting the phase ignition of a cylinder in an internal combustion engine
Title (en)
Method for detecting the phase ignition of a cylinder in an internal combustion engine
Title (de)
Verfahren zur Erkennung der Phasenlage eines Zylinders zur Zündung in einer Brennkraftmaschine
Title (fr)
Procédé pour détecter la phase d'allumage d'un cylindre d'un moteur à combustion interne
Publication
Application
Priority
FR 9611282 A 19960911
Abstract (en)
[origin: EP0829642A1] In the direct ignition system (2), sparking plugs (8,9) in cylinders whose pistons pass TDC simultaneously are operated in pairs from opposite ends of a common ignition coil secondary (6). In alternate revolutions, high (20kV) and low (2kV) positive voltages to frame (10) appear across one plug, the corresponding voltages on the other having low and high negative values, respectively. High value pulses coincide, in each cylinder, with the ignition phase. The coil core (7), electrically floating, is capacitively coupled to the secondary winding, and follows its mean voltage in polarity and magnitude. An engine management signal (Vs1), reproducing these variations and thus identifying ignition phases, is derived from a resistance (15)/zener diode (16) series detector circuit (1) connected between coil core (7) and frame (14).
IPC 1-7
IPC 8 full level
F02P 15/08 (2006.01)
CPC (source: EP)
F02P 15/08 (2013.01)
Designated contracting state (EPC)
DE ES GB IT SE
DOCDB simple family (publication)
EP 0829642 A1 19980318; EP 0829642 B1 20040303; DE 69727871 D1 20040408; DE 69727871 T2 20050127; FR 2753234 A1 19980313; FR 2753234 B1 19981204
DOCDB simple family (application)
EP 97420161 A 19970910; DE 69727871 T 19970910; FR 9611282 A 19960911