EP 0889235 B1 20021218 - Device for determining the phase cycle of an internal combustion engine
Title (en)
Device for determining the phase cycle of an internal combustion engine
Title (de)
Vorrichtung zur Bestimmung der Phase des Zyklus für eine Brennkraftmaschine
Title (fr)
Dispositif de détermination de la phase de fonctionnement d'un moteur à combustion interne
Publication
Application
Priority
FR 9708529 A 19970704
Abstract (en)
[origin: EP0889235A1] A secondary ignition coil (5) is connected at each end to the sparking plug (6,7) in one of a designated pair of cylinders (1,4), one being in compression, while the other (4) is exhausting. The parameter relied on is the arithmetic mean of the output voltages. As these are opposed, this value takes the sign of the greater. Remaining near zero as both voltages increase, with opposite polarity, it assumes a level near that of the plug under compression when the other becomes conducting. This step-change, processed (8) to produce a binary signal representing + or -, is used to distinguish between the paired cylinders and to control (Vc) the switching of the primary coil (2) through e.g. a power transistor (3).
IPC 1-7
IPC 8 full level
F02P 7/077 (2006.01); F02P 15/08 (2006.01)
CPC (source: EP)
F02P 7/077 (2013.01); F02P 15/08 (2013.01)
Designated contracting state (EPC)
CH DE ES GB IT LI PT SE
DOCDB simple family (publication)
EP 0889235 A1 19990107; EP 0889235 B1 20021218; DE 69810198 D1 20030130; DE 69810198 T2 20030430; FR 2765624 A1 19990108; FR 2765624 B1 19990917
DOCDB simple family (application)
EP 98401684 A 19980703; DE 69810198 T 19980703; FR 9708529 A 19970704