EP 1668240 B1 20141112 - FUEL INJECTION VALVE
Title (en)
FUEL INJECTION VALVE
Title (de)
BRENNSTOFFEINSPRITZVENTIL
Title (fr)
SOUPAPE D'INJECTION DE CARBURANT
Publication
Application
Priority
- EP 2004052123 W 20040910
- DE 10344585 A 20030925
Abstract (en)
[origin: WO2005031153A1] Known fuel injection valves comprise a valve needle that has a maximum diameter on a flow-off edge, and a valve seat that comprises a sealed seat and co-operates with the valve needle. Said valve seat widens from the sealed seat to a spray-off edge, and the flow-off edge of the valve needle is displaced to the rear in the flow direction, in relation to the spray-off edge of the valve seat, when the fuel injection valve is closed. The fuel injection valve injects the fuel into a combustion chamber of an internal combustion engine at a pre-determined jet angle. Disadvantageously, when the displacement of the flow-off edge to the rear is too little or too much, an unacceptably high jet angle dispersion occurs. The inventive fuel injection valve enables the jet angle dispersion to be reduced in a simple manner. According to the invention, the flow-off edge (14) of the valve needle (4) is displaced to the rear in relation to the spray-off edge (16) of the valve seat (9), by between 2 micrometers and 20 micrometers, in the direction of a valve longitudinal axis (22).
IPC 8 full level
F02M 61/08 (2006.01); F02M 61/18 (2006.01); F02M 63/00 (2006.01); F02M 69/04 (2006.01); F02M 69/08 (2006.01)
CPC (source: EP US)
F02M 51/0603 (2013.01 - EP US); F02M 61/08 (2013.01 - EP US); F02M 61/18 (2013.01 - EP US); F02M 69/045 (2013.01 - EP US); F02M 69/08 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 2005031153 A1 20050407; BR PI0414709 A 20061114; BR PI0414709 B1 20171024; DE 10344585 A1 20050428; EP 1668240 A1 20060614; EP 1668240 B1 20141112; JP 2007506036 A 20070315; JP 4542100 B2 20100908; US 2009008482 A1 20090108; US 8727240 B2 20140520
DOCDB simple family (application)
EP 2004052123 W 20040910; BR PI0414709 A 20040910; DE 10344585 A 20030925; EP 04787123 A 20040910; JP 2006527399 A 20040910; US 57195204 A 20040910