EP 1923559 B1 20091007 - A method of controlling a piezoelectric actuator
Title (en)
A method of controlling a piezoelectric actuator
Title (de)
Verfahren zur Steuerung eines piezoelektrischen Aktors
Title (fr)
Méthode de commande d'un actionneur piézo-électrique
Publication
Application
Priority
EP 06255815 A 20061114
Abstract (en)
[origin: EP1923559A1] A method controls the displacement of a stack of a piezoelectric actuator for use in a fuel injector in order to control fuel volume delivery. The method comprises causing a varying current to be driven into or out of the stack to charge or discharge the stack, respectively, during an opening phase. The opening phase comprises at least a primary phase, measuring a parameter during the opening phase. The method further comprises comparing the measured parameter with a predetermined threshold value, and taking corrective action to adjust the fuel volume delivery, during a subsequent injection, depending on the result of the comparison.
IPC 8 full level
F02D 41/20 (2006.01); F02D 41/38 (2006.01)
CPC (source: EP)
F02D 41/2096 (2013.01); F02D 41/2467 (2013.01); F02D 41/064 (2013.01); F02D 2041/2051 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1923559 A1 20080521; EP 1923559 B1 20091007; AT E445094 T1 20091015; DE 602006009683 D1 20091119
DOCDB simple family (application)
EP 06255815 A 20061114; AT 06255815 T 20061114; DE 602006009683 T 20061114