EP 1856403 A1 20071121 - FUEL INJECTOR COMPRISING A DIRECTLY CONTROLLED INJECTION VALVE MEMBER WITH A DOUBLE-SEAT
Title (en)
FUEL INJECTOR COMPRISING A DIRECTLY CONTROLLED INJECTION VALVE MEMBER WITH A DOUBLE-SEAT
Title (de)
KRAFTSTOFFINJEKTOR MIT DIREKTGESTEUERTEM EINSPRITZVENTILGLIED MIT DOPPELSITZ
Title (fr)
INJECTEUR DE CARBURANT COMPRENANT UN ELEMENT DE SOUPAPE D'INJECTION A COMMANDE DIRECTE QUI PRESENTE UN DOUBLE SIEGE
Publication
Application
Priority
- EP 2006050237 W 20060117
- DE 102005009148 A 20050301
Abstract (en)
[origin: WO2006092344A1] Disclosed is a fuel injector (110) for supplying combustion chambers of self-igniting internal combustion engines with fuel. Said fuel injector (110) is supplied with pressurized fuel via a high-pressure source (114) while featuring direct control of an injection valve member (128) by means of a piezo actuator (140) via a hydraulic transducer (174). The injection valve member (128) of the fuel injector (110) is also provided with a double seat. For this purpose, the injection valve member (128) is equipped with two sealing seats (182, 184) which subdivide a nozzle chamber (122) of the fuel injector (110) into three partial spaces (188, 190, 192). A first partial space (188) and a third partial space (192) are fluidically interconnected and are supplied with fuel when the injection valve member (128) is closed. The second partial space (190), which is connected to injection ports (136), is fluidically disconnected from the partial spaces (188, 192) with the aid of the sealing seats (182, 184). The inventive assembly encompassing a combination of direct needle control and a double seat of the injection valve member (128) has the advantage that the fuel injector (110) is unthrottled while the injection valve member is lifted to a very small extent such that particularly also short piezo actuators (140) can be used.
IPC 8 full level
F02M 51/06 (2006.01); F02M 61/04 (2006.01); F02M 61/18 (2006.01); F02M 63/00 (2006.01)
CPC (source: EP US)
F02M 51/0603 (2013.01 - EP US); F02M 61/042 (2013.01 - EP US); F02M 61/18 (2013.01 - EP US); F02M 2200/703 (2013.01 - EP US); F02M 2200/704 (2013.01 - EP US)
Citation (search report)
See references of WO 2006092344A1
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)
DE 102005009148 A1 20060907; CN 101133242 A 20080227; EP 1856403 A1 20071121; EP 1856403 B1 20140528; JP 2008531917 A 20080814; US 2008099583 A1 20080501; WO 2006092344 A1 20060908
DOCDB simple family (application)
DE 102005009148 A 20050301; CN 200680006904 A 20060117; EP 06700750 A 20060117; EP 2006050237 W 20060117; JP 2007557453 A 20060117; US 81421006 A 20060117