EP 1276987 A1 20030122 - FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES
Title (en)
FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES
Title (de)
KRAFTSTOFFEINSPRITZVENTIL FUR BRENNKRAFTMASCHINEN
Title (fr)
SOUPAPE D'INJECTION DE CARBURANT POUR MOTEURS A COMBUSTION INTERNE
Publication
Application
Priority
- DE 0101408 W 20010410
- DE 10019153 A 20000418
Abstract (en)
[origin: WO0179688A1] A fuel injection valve comprising a valve body (1) which is axially tensed against a valve retaining body (3) and in which a bore (5) is made, the end of said bore being sealed on the combustion chamber side, whereby a valve seat (32) and at least one injection opening (34) are provided. A piston-shaped valve member (10) is arranged in the bore (5) and guided with a first (110) and second radial expansion (210) in said bore (5). The valve member (10) surrounds a pressure chamber (23) which can be filled with fuel and which extends towards the valve seat (32) in the form of an annular channel surrounding the valve member (10). A valve piston (12) is arranged inside the hole (5) opposite the combustion chamber in relation to the valve member (10). Said valve piston seals the pressure chamber (23) and rests against the valve member (10). The first radial expansion (110) has more slack in the bore (5) than the second radial expansion (210), thereby reducing the friction of the valve member (10) during longitudinal movement. The first radial expansion (10) is only used for guiding purposes, while the pressure chamber (23) is sealed by the valve piston (12),i.e. by means of a separate component from the valve member (10).
IPC 1-7
IPC 8 full level
F02M 47/00 (2006.01); F02M 47/02 (2006.01); F02M 61/10 (2006.01); F02M 61/12 (2006.01); F02M 61/16 (2006.01); F02M 61/20 (2006.01)
CPC (source: EP KR US)
F02M 47/027 (2013.01 - EP US); F02M 61/12 (2013.01 - EP KR US); F02M 61/16 (2013.01 - EP US); F02M 61/163 (2013.01 - EP US)
Citation (search report)
See references of WO 0179688A1
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
WO 0179688 A1 20011025; CZ 20014481 A3 20030312; DE 10019153 A1 20011025; EP 1276987 A1 20030122; JP 2003531338 A 20031021; KR 20020023235 A 20020328; US 2002104901 A1 20020808
DOCDB simple family (application)
DE 0101408 W 20010410; CZ 20014481 A 20010410; DE 10019153 A 20000418; EP 01940145 A 20010410; JP 2001577057 A 20010410; KR 20017016187 A 20011217; US 1831502 A 20020402