Pole piece retention and insertion method
AssigneeDelphi Automotive Systems Luxembourg SA
InventorsArnaud LEBLAY, Cas BREEDIJK
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Abstract
A fuel injector includes an injector body which accommodates a pole piece of a solenoid actuator. A top portion of the injector body includes a cylindrically formed generally open-ended recessed portion. The recessed portions accommodates a generally cylindrical pole piece, wherein the pole piece includes a bore located along a central axis to provide a fuel flow path. The top portion of the pole piece includes a cylindrically formed recess so as to form a sleeve or lip portion.
Claims7
1-6. (canceled)
A fuel injector comprising:
- an upper housing;
- and
- an injector body which accommodates a pole piece of a solenoid actuator, where a top portion of said injector body includes a cylindrically formed open-ended recessed portion, said recessed portion accommodating a cylindrical pole piece, wherein said pole piece includes a bore located along a central axis which provides a fuel flow path and a top portion of said pole piece includes a cylindrically formed recess so as to form a sleeve or lip portion;
- wherein a weld is formed at a junction of a distal end of the upper housing, an upper end of the injector body, and a distal portion of said lip or sleeve portion.
A fuel injector as claimed in claim 1, wherein an outer diameter (OD) of the sleeve or lip portion and an inner diameter (ID) of the sleeve or lip portion are dimensioned such that:
- 0
- .
- 7
- <
- ID
- OD
- <
- 0
- .
- 9
-
- 9
A fuel injector as claimed in claim 1, wherein a thickness (L) of the sleeve or lip portion and an outer diameter (OD) of the sleeve or lip portion are dimensioned such that:
- 0
- .
- 1
- <
- L
- OD
- <
- 0
- .
- 5
Dependencies are inferred from the claim text.