EP 0980474 A1 20000223 - FUEL INJECTOR FOR AUTO-IGNITION INTERNAL COMBUSTION ENGINES
Title (en)
FUEL INJECTOR FOR AUTO-IGNITION INTERNAL COMBUSTION ENGINES
Title (de)
KRAFTSTOFFEINSPRITZDÜSE FÜR SELBSTZÜNDENDE BRENNKRAFTMASCHINEN
Title (fr)
INJECTEUR DE CARBURANT POUR MOTEURS A COMBUSTION INTERNE A AUTO-ALLUMAGE
Publication
Application
Priority
- DE 9801696 W 19980619
- DE 19755057 A 19971211
Abstract (en)
[origin: DE19755057A1] The invention relates to a fuel injector for auto-ignition internal combustion engines. Said injector comprises a body (30) with a conical seat surface (32) from which injection openings (34) originate. It also comprises a valve needle which is slidably guided in the entry zone of the blind bore, through a guiding section, against a closing force and against the direction of fuel flow. The valve needle has a closing cone (12) disposed at the end of a valve spindle connected to the guiding section and co-operating with the seat surface (32). The valve spindle (10) circumferentially defines an annular space (40) for fuel feeding. The inventive injector is characterised in that a throttle device with a variable throttle cross section is placed in the transition zone between the valve spindle (10) and the closing cone (20). Said throttle device allows for a varying amount of injected fuel, depending on the axial displacement of the valve needle.
IPC 1-7
IPC 8 full level
F02M 45/00 (2006.01); F02M 45/12 (2006.01); F02M 61/10 (2006.01); F02M 61/18 (2006.01)
CPC (source: EP US)
F02M 45/00 (2013.01 - EP US); F02M 45/12 (2013.01 - EP US); F02M 61/10 (2013.01 - EP US); F02M 61/18 (2013.01 - EP US); F02M 61/1873 (2013.01 - EP US); F02M 2200/28 (2013.01 - EP US)
Citation (search report)
See references of WO 9930028A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DE 19755057 A1 19990617; DE 59810346 D1 20040115; EP 0980474 A1 20000223; EP 0980474 B1 20031203; JP 2001511231 A 20010807; JP 4223077 B2 20090212; US 6257506 B1 20010710; WO 9930028 A1 19990617
DOCDB simple family (application)
DE 19755057 A 19971211; DE 59810346 T 19980619; DE 9801696 W 19980619; EP 98936237 A 19980619; JP 52959999 A 19980619; US 35577599 A 19990913