EP 1788228 A2 20070523 - Fuel injection control apparatus having fail-safe function for protection against occurrence of short-circuit to ground at connecting lead of fuel injector coil
Title (en)
Fuel injection control apparatus having fail-safe function for protection against occurrence of short-circuit to ground at connecting lead of fuel injector coil
Title (de)
Kraftstoffeinspritzvorrichtung mit Sicherheitsfunktion zum Schutz vor Kurzschluss mit Masse am Verbindungskabel der Kraftstoffeinspritzspule
Title (fr)
Dispositif de commande de l'injection de carburant avec une sécurité de protection contre les court-circuits à la terre d'un câble de liaison d'une bobine d'un injecteur
Publication
Application
Priority
- JP 2005337152 A 20051122
- JP 2006273247 A 20061004
Abstract (en)
A fuel injection control apparatus monitors the amplitude of a discharge current pulse supplied from a capacitor to a currently selected one of a group of fuel injectors, and judges that a short-circuit to ground is occurring in a connection lead of the group if the amplitude exceeds a regular threshold value. If that occurs, the judgement threshold value is changed to a lower value during a succeeding fixed number of judgement operations. If the regular threshold value is exceeded for a predetermined number of times in succession, operations for driving the injectors of that group are terminated.
IPC 8 full level
F02D 41/20 (2006.01); F02D 41/14 (2006.01); F02D 41/22 (2006.01)
CPC (source: EP)
F02D 41/20 (2013.01); F02D 41/221 (2013.01); F02D 2041/2006 (2013.01); F02D 2041/2058 (2013.01); F02D 2041/2093 (2013.01); F02D 2400/14 (2013.01)
Designated contracting state (EPC)
DE FR IT
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
EP 1788228 A2 20070523; EP 1788228 A3 20080813; EP 1788228 B1 20110907; JP 2007170373 A 20070705; JP 4650387 B2 20110316
DOCDB simple family (application)
EP 06024219 A 20061122; JP 2006273247 A 20061004