EP 1420156 A3 20050309 - Control circuit for fuel injectors of a vehicle
Title (en)
Control circuit for fuel injectors of a vehicle
Title (de)
Ansteuerschaltung für Kraftstoffinjektoren eines Fahrzeugs
Title (fr)
Dispositif de pilotage d'injecteurs de carburant pour véhicule automobile
Publication
Application
Priority
FR 0214147 A 20021113
Abstract (en)
[origin: EP1420156A2] The fuel injectors have multiple piezoelectric cells (16) to atomize the fuel. Control of the resonant fuel injectors uses a processing circuit (10,12) which monitors the periodic excitation of a fuel injector, and a selector (14) for the piezoelectric cells to be excited. The magnitudes of electric signals in the excitation circuit are monitored to detect disfunction of the injectors.
IPC 1-7
IPC 8 full level
F02D 41/20 (2006.01); F02D 41/22 (2006.01); F02D 41/30 (2006.01)
CPC (source: EP)
F02D 41/2096 (2013.01); F02D 41/221 (2013.01); F02D 41/30 (2013.01); F02D 2041/2093 (2013.01)
Citation (search report)
- [XY] US 2001039484 A1 20011108 - FREUDENBERG HELLMUT [DE], et al
- [XY] FR 2776087 A1 19990917 - SIEMENS AG [DE]
- [XY] EP 1139443 A1 20011004 - BOSCH GMBH ROBERT [DE]
- [YA] US 6109245 A 20000829 - EGGER KLAUS [DE], et al
- [YA] DE 19709716 A1 19980514 - SIEMENS AG [DE]
- [A] DE 19927087 A1 20001221 - BOSCH GMBH ROBERT [DE]
- [A] DE 19709715 A1 19980520 - SIEMENS AG [DE]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1420156 A2 20040519; EP 1420156 A3 20050309; FR 2847001 A1 20040514; FR 2847001 B1 20070202
DOCDB simple family (application)
EP 03292787 A 20031106; FR 0214147 A 20021113