EP 2199593 A1 20100623 - Method for producing the sealing seat with injection holes of a fuel injector
Title (en)
Method for producing the sealing seat with injection holes of a fuel injector
Title (de)
Verfahren zur Herstellung des Dichtungssitzes mit Einspritzlöchern für eine Kraftstoffeinspritzdüse
Title (fr)
Procédé de fabrication d'un siège de scellement avec des trous d'injection d'un injecteur de carburant
Publication
Application
Priority
EP 08425800 A 20081217
Abstract (en)
Method for producing the sealing seat (11) of a fuel injector (1) for an internal-combustion engine, the sealing seat (11) having a plurality of injection holes (3); the method comprises the steps of: mixing plastic binder with a powdered metal so as to obtain a homogeneous compound; injecting, in order to form the sealing seat (11), the homogeneous compound into a mould (14) that reproduces in negative the shape of the sealing seat (11); obtaining within the mould (14) a plurality of punches (15) that reproduce in negative at least partially the shape of the injection holes (3) in such a way as to form within the mould (14) the sealing seat (11), which already presents the injection holes (3); and subjecting the sealing seat (11) to a thermal treatment to eliminate the plastic binder and sinter the powdered metal.
IPC 8 full level
F02M 61/16 (2006.01); F02M 61/18 (2006.01)
CPC (source: EP)
F02M 61/168 (2013.01); F02M 61/1806 (2013.01)
Citation (search report)
- [X] WO 0148371 A1 20010705 - BOSCH GMBH ROBERT [DE], et al
- [X] US 2002008166 A1 20020124 - FUKAYA KANEHIRO [JP], et al
- [A] DE 4404021 A1 19950810 - BOSCH GMBH ROBERT [DE]
- [A] DE 102005036950 A1 20070208 - BOSCH GMBH ROBERT [DE]
Designated contracting state (EPC)
DE FR IT
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 08425800 A 20081217