Coupling arrangement and fuel injector

Details Coupling arrangement and fuel injector Coupling arrangement and fuel injector

2009-04-10

2011-12-06

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S456000

Reexamination Certificate

active

08069841

ABSTRACT:
A coupling arrangement for coupling a fuel injector to a fuel rail of a combustion engine, has a fuel injector cup having a central longitudinal axis and is coupled to the fuel rail at a first axial end area of the fuel injector cup, a housing of the fuel injector being arranged at the central longitudinal axis facing a second axial end area of the fuel injector cup, an O-ring seal being arranged between the housing and the fuel injector cup at an axially overlapping area of the fuel injector cup and the housing, a back-up ring being arranged at least partly circumferentially the housing such as to prevent the O-ring seal to be released from the housing, and a separating element being arranged at least partly circumferentially the housing between the O-ring seal and the back-up ring to prevent a contact of the O-ring seal with the back-up ring.

REFERENCES:
patent: 6102007 (2000-08-01), Furst
patent: 6419282 (2002-07-01), Hornby
patent: 6640784 (2003-11-01), Sims, Jr.
patent: 6701899 (2004-03-01), Liskow
patent: 2005/0115546 (2005-06-01), Liskow
patent: 2009/0013968 (2009-01-01), Keegan et al.
patent: 1849995 (2007-10-01), None
patent: WO 2006063689 (2006-06-01), None

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