EP 0654604 B1 19980729 - Coil ignition method and device with additional discharges for diagnostics
Title (en)
Coil ignition method and device with additional discharges for diagnostics
Title (de)
Verfahren und Vorrichtung einer Spulenzündung mit zusätzlichen Entladungen zur Diagnose
Title (fr)
Procédé et dispositif d'allumage à bobine avec des décharges additionnelles pour diagnostics
Publication
Application
Priority
FR 9313944 A 19931122
Abstract (en)
[origin: EP0654604A1] The electronic ignition method and device of the invention ensure, between two periods of charging of the primary (13), the passage of a measurement current in the primary (13) for at least one diagnostic period defined by the computer (16). The rate of increase of current in the primary (13) is determined and discriminated by comparison with a threshold in order to deduce information on the presence and/or quality of a spark to the spark plug (10) connected to the secondary (12) of the ignition coil (11). The primary current is measured at the terminals of a shunt (15), and the measurements transmitted to the comparator-type detector (18) delivering signals about the presence of a spark to the computer (16), which controls the make-and-break switch (14) via an interface amplifier (17). Application to diagnosing ignition of controlled-ignition internal combustion engines. <IMAGE>
IPC 1-7
IPC 8 full level
F02P 17/12 (2006.01); F02P 3/045 (2006.01)
CPC (source: EP)
F02P 17/12 (2013.01); F02P 3/0456 (2013.01)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 0654604 A1 19950524; EP 0654604 B1 19980729; DE 69412039 D1 19980903; DE 69412039 T2 19990401; ES 2122192 T3 19981216; FR 2712934 A1 19950602; FR 2712934 B1 19960126
DOCDB simple family (application)
EP 94402617 A 19941117; DE 69412039 T 19941117; ES 94402617 T 19941117; FR 9313944 A 19931122