Fluid sprinkling – spraying – and diffusing – Unitary injection nozzle and pump or accumulator plunger
Patent
1976-07-01
1977-10-18
Love, John J.
Fluid sprinkling, spraying, and diffusing
Unitary injection nozzle and pump or accumulator plunger
123139AK, B05B 130
Patent
active
040542483
ABSTRACT:
A jerk-type fuel injector - pump unit is provided with a two-stage plunger rotatably and reciprocably journaled in the cylinders of a two-stage bushing to provide therewith a primary chamber for pumping fuel for injection and a secondary chamber for pumping fuel, with an annular fuel chamber encircling the bushing, the bushing having conventional upper and lower main fill and bypass ports in communication with the primary chamber as controlled by the first stage of the two-stage plunger with each port sequentially closable and operable by spaced helical lands on the first stage of the plunger to effect beginning and ending of injection during the pumping stroke of the plunger to discharge fuel through an outlet at the lower end of the bushing for injection into the cylinder of an engine, the bushing further having secondary port means and a lower flow control passage means, each opening at one end into said secondary chamber with flow therethrough controlled by the second stage of the plunger, the second stage of the plunger being of a larger external diameter than the diameter of the first stage and sized relative thereto so that the cross-sectional working area of the primary chamber is substantially equal to the cross-sectional working area of the secondary chamber.
REFERENCES:
patent: 2556171 (1951-06-01), Dudek
patent: 2590575 (1952-03-01), Rogers
patent: 2996054 (1961-08-01), Lang
General Motors Corporation
Krein Arthur N.
Love John J.
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