EP 2478200 A1 20120725 - METHOD AND APPARATUS TO DETECT THE MOVEMENT OF A NEEDLE OF A FUEL INJECTOR
Title (en)
METHOD AND APPARATUS TO DETECT THE MOVEMENT OF A NEEDLE OF A FUEL INJECTOR
Title (de)
VERFAHREN UND VORRICHTUNG ZUM BESTIMMEN EINER BEWEGUNG EINES NADELS EINES EINSPRITZVENTILS
Title (fr)
PROCÉDÉ ET SYSTÈME DE DÉTECTION DE MOUVEMENT D'UNE AIGUILLE D'UN INJECTEUR DE CARBURANT
Publication
Application
Priority
- DE 102009029549 A 20090917
- EP 2010063185 W 20100908
Abstract (en)
[origin: WO2011032873A1] The invention relates to a method for determining a point in time when a valve needle arranged in an injection valve changes directions. In said method, a variable providing information on a curve indicating the pressure (40) in a control chamber of the injection valve is directly measured using a sensor in the control chamber, and from said variable providing information on the pressure curve (40), it is determined at what point in time the curve is at an extreme point, and said point in time is identified as the point in time when the direction changes.
IPC 8 full level
F02D 41/30 (2006.01); F02M 47/02 (2006.01); F02M 63/00 (2006.01)
CPC (source: EP)
F02D 41/20 (2013.01); F02D 41/2096 (2013.01); F02M 47/027 (2013.01); F02M 57/005 (2013.01); F02M 65/005 (2013.01); F02D 41/40 (2013.01); F02D 2041/2051 (2013.01); F02D 2041/2055 (2013.01); F02D 2200/0602 (2013.01); F02D 2200/0604 (2013.01); F02D 2200/0618 (2013.01); F02M 2200/247 (2013.01)
Citation (search report)
See references of WO 2011032873A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
DE 102009029549 A1 20110324; CN 102575607 A 20120711; CN 102575607 B 20150624; EP 2478200 A1 20120725; EP 2478200 B1 20150422; IN 278DEN2012 A 20150508; WO 2011032873 A1 20110324
DOCDB simple family (application)
DE 102009029549 A 20090917; CN 201080041445 A 20100908; EP 10754910 A 20100908; EP 2010063185 W 20100908; IN 278DEN2012 A 20120110