EP 3994348 A1 20220511 - METHOD AND SYSTEM TO DETERMINE THE STATE OF NEEDLE VALVE OF A FUEL INJECTOR
Title (en)
METHOD AND SYSTEM TO DETERMINE THE STATE OF NEEDLE VALVE OF A FUEL INJECTOR
Title (de)
VERFAHREN UND SYSTEM ZUR BESTIMMUNG DES ZUSTANDS EINES NADELVENTILS EINES EINSPRITZVENTILS
Title (fr)
PROCÉDÉ ET SYSTÈME POUR DÉTERMINER L'ÉTAT D'UN POINTEAU D'UN INJECTEUR DE CARBURANT
Publication
Application
Priority
- GB 201909434 A 20190701
- EP 2020068476 W 20200701
Abstract (en)
[origin: GB2585196A] A fuel injector including a solenoid-controlled actuator, said solenoid controlled actuator 201 including a coil 202 connected to high side 211 and low side 212 terminals. Activation of the actuator causes a needle of a needle valve to move away from a closed position where the valve needle tip is in contact with a valve seat (see box 204), to an open position where the valve needle tip is away from said valve seat. The tip and seat acting as a switch 203, with said valve seat being connected to ground potential, and where said fuel injector defines a flow path for current to flow from a high side point of the injector via said needle and seat, to ground, when said needle valve is in the closed position. The high side point is connected to the high side terminal 211 of said solenoid via a first resistor R1.
IPC 8 full level
F02D 41/20 (2006.01); F02M 65/00 (2006.01)
CPC (source: EP GB)
F02D 41/20 (2013.01 - EP GB); F02M 51/06 (2013.01 - GB); F02M 65/005 (2013.01 - GB); F02D 2041/2055 (2013.01 - EP GB); F02D 2041/2058 (2013.01 - EP GB); F02D 2041/2068 (2013.01 - EP GB); F02D 2400/22 (2013.01 - EP GB); F02M 65/005 (2013.01 - EP)
Citation (search report)
See references of WO 2021001409A1
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 RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
GB 201909434 D0 20190814; GB 2585196 A 20210106; GB 2585196 B 20211027; EP 3994348 A1 20220511; WO 2021001409 A1 20210107
DOCDB simple family (application)
GB 201909434 A 20190701; EP 2020068476 W 20200701; EP 20737395 A 20200701