Measuring and testing – Blower – pump – and hydraulic equipment
Patent
1978-02-16
1979-05-08
Swisher, S. Clement
Measuring and testing
Blower, pump, and hydraulic equipment
29705, G01M 1900
Patent
active
041529324
ABSTRACT:
A fixture and method is disclosed for assembling and standardizing embodiments of fuel injection valves of the outward opening type and in particular those valves having a retainer connection between the stem of the valve closure and the compression spring urging the closure to its seated position which permits the stem to rock with respect to the end of the spring. The retainer connection is formed of one or more members of selectable thickness, or having a selectable stop ring height, wherein by use of the fixture a plurality of valves can be manufactured having substantially identical flow rate characteristics. A subassembly comprising the valve body, valve spring and valve closure are held in the fixture and a specified assembled load is applied to the spring. Measurements are made leading to a determination of the thickness to be employed for said member(s) to be assembled in that valve.
REFERENCES:
patent: 2691299 (1954-10-01), Ward
patent: 3097516 (1963-07-01), Reed et al.
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