Method and fuel injector enabling precision setting of valve lif

Details Method and fuel injector enabling precision setting of valve lif Method and fuel injector enabling precision setting of valve lif

1996-07-31

1998-07-07

Morris, Lesley D.

Fluid sprinkling, spraying, and diffusing

Including valve means in flow line

Reciprocating

2395851, F02M 5100

Patent

active

057756007

ABSTRACT:
A method and fuel injector for precision setting of valve lift, using a valve body shell (42) telescoped over the valve body (60), the shell (42) having a nonmagnetic extension welded to the valve body shell (42) and to the end of an inlet tube (16) providing a solenoid pole piece, with the valve body (60) and shell (42) adjusted to set the valve lift and thereafter welded together. Interference fit portions stabilize the adjusted position of the members preparatory to welding, and displaced material in a locking groove (102) creates a mechanical interlock between the valve body (60) and shell (42) to stabilize the members in their adjusted positions after welding so that the set lift is minimally affected by weld shrinkage. An external radial groove 18 allows radial bending as the weld cools to minimize axial shift of the parts and thus the effect on the set valve lift.

REFERENCES:
patent: 5307991 (1994-05-01), Hanson et al.

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