EP 1999359 B1 20120229 - METHOD OF DETERMINING AN OPENING VOLTAGE OF A PIEZOELECTRIC INJECTOR
Title (en)
METHOD OF DETERMINING AN OPENING VOLTAGE OF A PIEZOELECTRIC INJECTOR
Title (de)
VERFAHREN ZUR BESTIMMUNG EINER ÖFFNUNGSSPANNUNG EINES PIEZOELEKTRISCHEN INJEKTORS
Title (fr)
PROCEDE DE DETERMINATION DE LA TENSION D'OUVERTURE D'UN INJECTEUR PIEZOELECTRIQUE
Publication
Application
Priority
- EP 2007052378 W 20070314
- DE 102006013166 A 20060322
Abstract (en)
[origin: WO2007107484A1] Method of determining an opening voltage of an injector (12) having a piezoelectric actuator (28), in particular of an injector (12) of an internal combustion engine, wherein an initial voltage (U<SUB>A</SUB>) is applied to the piezoelectric actuator (28) in the closed state of the injector (12) and the voltage (U) for opening the injector (12) is lowered by energizing the piezoelectric actuator (28). The energizing is interrupted at a holding voltage (U<SUB>H1</SUB>, U<SUB>H2</SUB>, U<SUB>H3</SUB>, U<SUB>Hn</SUB>) and after that the voltage change (?U) applied to the piezoelectric actuator (28) is measured over time, wherein, when voltage rises, it is recognized that the opening voltage (U<SUB>OE</SUB>) is reached.
IPC 8 full level
F02D 41/20 (2006.01); F02D 41/24 (2006.01)
CPC (source: EP US)
F02D 41/2096 (2013.01 - EP US); F02D 41/2432 (2013.01 - EP US); F02D 41/247 (2013.01 - EP US); F02D 2041/2055 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DE 102006013166 A1 20070927; EP 1999359 A1 20081210; EP 1999359 B1 20120229; JP 2009530538 A 20090827; JP 4705689 B2 20110622; US 2010275885 A1 20101104; WO 2007107484 A1 20070927
DOCDB simple family (application)
DE 102006013166 A 20060322; EP 07712521 A 20070314; EP 2007052378 W 20070314; JP 2009500823 A 20070314; US 22535407 A 20070314