EP 1527276 B1 20061220 - 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
Publication
Application
Priority
- DE 0301370 W 20030429
- DE 10232050 A 20020716
Abstract (en)
[origin: DE10232050A1] The fuel injection valve, for an internal combustion motor, has a valve body (1) with a piston-type valve needle (5) within a drilling (3) through the body. The lower end of the drilling is defined by a valve seat (9), towards the cylinder combustion zone, to work with the valve sealing surface (7) at the needle. The movement of the needle controls the fuel flow through the injection opening (11). Micro-recesses are formed at the needle valve sealing surface and/or the valve seat, as separate small bowls in a depth of 0.5-50.0 mum and preferably 3-20 mum, and a width of 5-100 mum and preferably 10-50 mum. The gaps between the recesses are smaller around the needle circumference than along the needle length. The recesses can also be groove segments, formed by fine lathe turning.
IPC 8 full level
F02M 51/06 (2006.01); F02M 61/18 (2006.01); F02M 61/10 (2006.01); F02M 63/00 (2006.01); F02M 61/12 (2006.01); F02M 61/16 (2006.01)
CPC (source: EP US)
F02M 61/18 (2013.01 - EP US); F02M 61/1873 (2013.01 - EP US); F02M 61/1893 (2013.01 - EP US); F02M 63/0001 (2013.01 - EP US); F02M 61/12 (2013.01 - EP US); F02M 61/168 (2013.01 - EP US); F02M 61/1806 (2013.01 - EP US); F02M 2200/304 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DE 10232050 A1 20040205; CN 100366891 C 20080206; CN 1668842 A 20050914; DE 50306057 D1 20070201; EP 1527276 A1 20050504; EP 1527276 B1 20061220; JP 2005533222 A 20051104; US 2005205693 A1 20050922; WO 2004016943 A1 20040226
DOCDB simple family (application)
DE 10232050 A 20020716; CN 03817027 A 20030429; DE 0301370 W 20030429; DE 50306057 T 20030429; EP 03787585 A 20030429; JP 2004528289 A 20030429; US 52118005 A 20050525