Metallic compression joint and fuel injector having a...

Details Metallic compression joint and fuel injector having a... Metallic compression joint and fuel injector having a...

2007-12-04

2007-12-04

Moulis, Thomas (Department: 3747)

Pipe joints or couplings

Particular interface

Reexamination Certificate

active

11511667

ABSTRACT:
A fuel injector for fuel injection systems of internal combustion engines is described. The fuel injector includes an electromagnetic actuating element having a magnetic coil, a core, and a valve jacket as an outer magnetic circuit component and a movable valve closing body which interacts with a valve seat surface assigned to a valve seat body. The core and a connecting tube are fixedly joined in an inner opening of a thin-walled valve sleeve and the valve jacket at the outer circumference of the valve sleeve by pressing in or on. The fixed compression joint of two of these metallic components of the fuel injector is characterized in that at least one of the components has a surface-roughening structure in its compression area, it being possible to create the surface-roughening structure using a laser and metal oxides being deposited on the structure.

REFERENCES:
patent: 5732743 (1998-03-01), Livesay
patent: 6550820 (2003-04-01), Baerts et al.
patent: 2007/0141439 (2007-06-01), Vyas et al.
patent: 199 00 405 (2000-07-01), None

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