EP 1697633 B1 20150527 - METHOD FOR DIAGNOSIS IN A FUEL INJECTION DEVICE COMPRISING A PIEZOACTUATOR
Title (en)
METHOD FOR DIAGNOSIS IN A FUEL INJECTION DEVICE COMPRISING A PIEZOACTUATOR
Title (de)
VERFAHREN ZUR DIAGNOSE EINER KRAFTSTOFF-EINSPRITZVORRICHTUNG, WELCHE EINEN PIEZOAKTOR AUFWEIST
Title (fr)
PROCEDE DE DIAGNOSTIC D'UN DISPOSITIF D'INJECTION DE CARBURANT POURVU D'UN ACTIONNEUR PIEZOELECTRIQUE
Publication
Application
Priority
- DE 2004001780 W 20040807
- DE 10349824 A 20031024
Abstract (en)
[origin: WO2005045234A1] The invention relates to a method, for diagnosis in a fuel injection device (22), comprising a piezoactuator (26), by means of which a valve element is operated. According to the invention, the fuel injection device (22) is connected to a diagnosis unit (34), a specific voltage is then applied to the piezoactuator (26), by the diagnosis unit (34) and the charge introduced into the piezoactuator (26), by the diagnosis unit (34) and hence a capacitance for the piezoactuator (26), are determined.
IPC 8 full level
F02D 41/20 (2006.01); F02D 41/22 (2006.01); F02M 65/00 (2006.01); G01R 31/28 (2006.01); F02M 63/00 (2006.01); F02M 63/02 (2006.01)
CPC (source: EP US)
F02D 41/2096 (2013.01 - EP US); F02D 41/221 (2013.01 - EP US); F02M 65/00 (2013.01 - EP US); F02M 63/0026 (2013.01 - EP US); F02M 63/0225 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
WO 2005045234 A1 20050519; CN 1871429 A 20061129; DE 10349824 A1 20050602; EP 1697633 A1 20060906; EP 1697633 B1 20150527; ES 2538707 T3 20150623; JP 2006522574 A 20060928; US 2007001545 A1 20070104; US 7467543 B2 20081223
DOCDB simple family (application)
DE 2004001780 W 20040807; CN 200480031407 A 20040807; DE 10349824 A 20031024; EP 04762625 A 20040807; ES 04762625 T 20040807; JP 2006500503 A 20040807; US 55659905 A 20051114