EP 1198672 B1 20030917 - FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES
Title (en)
FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES
Title (de)
KRAFTSTOFFEINSPRITZVENTIL FÜR BRENNKRAFTMASCHINEN
Title (fr)
SOUPAPE D'INJECTION DE CARBURANT POUR MOTEURS A COMBUSTION INTERNE
Publication
Application
Priority
- DE 0102371 W 20010627
- DE 10031264 A 20000627
Abstract (en)
[origin: WO0201066A1] The invention relates to a fuel injection valve comprising a valve body (1) and a bore (3) configured as a blind bore, whose bottom area faces the combustion chamber. A conical valve seat (9) is formed on said bottom area and accommodates at least one injection opening (11). A piston-shaped valve member (5) is disposed in the bore (3). Said valve member can be displaced in the longitudinal direction against a closing force and is provided with a valve tip (7) which rests against the valve seat (9) when the valve member (5) is in the closed position. A first cone surface (30) and a second cone surface (32) are configured on the valve member tip (7), said second surface being disposed so as to face the combustion chamber relative to the first cone surface. The cone angle ( alpha ) of the first cone surface (30) is smaller than the cone angle ( gamma ) of the valve seat (9), which in turn is smaller than the cone angle ( beta ) of the second cone surface (32). An annular groove (35) is formed between the first (30) and the second cone surface (32), and an additional continuous annular groove (42) that at least partially overlaps the injection openings (11) in the closed position of the valve member (5) is formed on the second cone surface (32), thereby evenly providing all injection openings (11) with fuel even if the valve member (5) is misaligned.
IPC 1-7
IPC 8 full level
F02M 61/04 (2006.01); F02M 61/10 (2006.01); F02M 61/18 (2006.01); F02M 63/00 (2006.01)
CPC (source: EP KR US)
F02M 61/047 (2013.01 - EP US); F02M 61/18 (2013.01 - KR); F02M 61/1873 (2013.01 - EP US); F02M 2200/30 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 0201066 A1 20020103; BR 0106899 A 20020430; CN 1262758 C 20060705; CN 1383471 A 20021204; DE 10031264 A1 20020117; DE 50100641 D1 20031023; EP 1198672 A1 20020424; EP 1198672 B1 20030917; JP 2004502075 A 20040122; KR 100772851 B1 20071102; KR 20020027568 A 20020413; PL 352634 A1 20030908; US 2002179743 A1 20021205; US 6892965 B2 20050517
DOCDB simple family (application)
DE 0102371 W 20010627; BR 0106899 A 20010627; CN 01801811 A 20010627; DE 10031264 A 20000627; DE 50100641 T 20010627; EP 01953120 A 20010627; JP 2002506362 A 20010627; KR 20027002286 A 20020222; PL 35263401 A 20010627; US 6956802 A 20020703