EP 1117921 B1 20050427 - Fuel injector for a common rail fuel system
Title (en)
Fuel injector for a common rail fuel system
Title (de)
Einspritzvetil für ein Common-Rail Kraftstoffsystem
Title (fr)
Injecteur de carburant pour un système carburant à rampe commune
Publication
Application
Priority
- DE 0002530 W 20000801
- DE 19936667 A 19990804
Abstract (en)
[origin: US6726121B1] The invention relates to a common rail injector for injecting fuel in a common rail injection system of an internal combustion engine, which system has an injector housing (1) with a fuel inlet (24) that is in communication with a central high-pressure fuel reservoir outside the injector housing (1) and with a pressure chamber (27) inside the injector housing (1), from which fuel subjected to high pressure is injected as a function of the position of a control valve (18) that assures that a nozzle needle (8), which is movable back and forth and received in a longitudinal bore (6) of the injector axially counter to the prestressing force of a nozzle spring (21) that is received in a nozzle spring chamber (20), lifts from a seat when the pressure in the pressure chamber (27) is greater than the pressure in a control chamber (30) that communicates with the fuel inlet (24) via an inlet throttle (19).To achieve markedly higher nozzle needle speeds, the control chamber (15) is formed by a cylindrical chamber, in which a control peg (12), embodied on the end of the nozzle needle (8) remote from the combustion chamber, is displaceable causing a sealing effect, and that the nozzle spring chamber (20) is disposed outside the control chamber (15), in the region of the end of the nozzle needle (8) remote from the combustion chamber.
IPC 1-7
IPC 8 full level
F02M 47/00 (2006.01); F02M 47/02 (2006.01); F02M 61/10 (2006.01); F02M 63/00 (2006.01)
CPC (source: EP KR US)
F02M 47/02 (2013.01 - KR); F02M 47/027 (2013.01 - EP US); F02M 2200/21 (2013.01 - EP US); F02M 2547/003 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 6726121 B1 20040427; AT E294325 T1 20050515; CZ 20011136 A3 20020116; DE 19936667 A1 20010222; DE 50010158 D1 20050602; EP 1117921 A1 20010725; EP 1117921 B1 20050427; JP 2003506620 A 20030218; KR 20010079991 A 20010822; WO 0111219 A1 20010215
DOCDB simple family (application)
US 80671601 A 20010820; AT 00962182 T 20000801; CZ 20011136 A 20000801; DE 0002530 W 20000801; DE 19936667 A 19990804; DE 50010158 T 20000801; EP 00962182 A 20000801; JP 2001515445 A 20000801; KR 20017004278 A 20010404