EP 1423600 B1 20050420 - FUEL INJECTION VALVE
Title (en)
FUEL INJECTION VALVE
Title (de)
BRENNSTOFFEINSPRITZVENTIL
Title (fr)
SOUPAPE D'INJECTION DE CARBURANT
Publication
Application
Priority
- DE 0202120 W 20020611
- DE 10140796 A 20010820
Abstract (en)
[origin: WO03018993A1] The invention relates to a fuel injection valve (1), especially an injection valve for fuel injection devices of internal combustion engines. Said fuel injection valve comprises a piezoelectric or magnetostrictive actuator (4), and actuates, by means of a hydraulic coupler (23), a valve closing body (25) formed on a valve needle (24). Said valve closing body co-operates with a valve seat surface (26) to form a sealed valve seat (27). Said coupler (23) comprises a master piston (14) and a slave piston (19) which are connected to a pressure chamber (42), and at least one coupler spring element which respectively exerts a pre-stressing force on the master piston (14) counter to a working direction and on the slave piston (19) in a working direction. The pressure chamber (42) of the coupler (23) is connected to a fuel admission in the direction of the flow towards the pressure chamber (42) by means of an admission borehole (20) and a return valve.
IPC 1-7
IPC 8 full level
F02M 51/06 (2006.01); F02M 61/08 (2006.01); F02M 61/16 (2006.01)
CPC (source: EP KR US)
F02M 51/0603 (2013.01 - EP KR US); F02M 61/08 (2013.01 - EP KR US); F02M 61/167 (2013.01 - EP KR US); F02M 2200/21 (2013.01 - KR)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 03018993 A1 20030306; DE 10140796 A1 20030306; DE 50202857 D1 20050525; EP 1423600 A1 20040602; EP 1423600 B1 20050420; JP 2005500470 A 20050106; JP 4126014 B2 20080730; KR 100903514 B1 20090619; KR 20040027923 A 20040401; US 2004074999 A1 20040422; US 7073730 B2 20060711
DOCDB simple family (application)
DE 0202120 W 20020611; DE 10140796 A 20010820; DE 50202857 T 20020611; EP 02748581 A 20020611; JP 2003523821 A 20020611; KR 20047002428 A 20020611; US 39926903 A 20031009