F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
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F02M 61/00 (2006.01) F02M 51/06 (2006.01) F02M 61/16 (2006.01) F02M 61/18 (2006.01) F02M 51/08 (2006.01)
Patent
CA 1185850
- 17 - Electromagnetic Fuel Injector with Improved Discharge Structure Abstract An electromagnetically actuated fuel injector is provided with a discharge region of improved con- struction. The injector discharge region includes a central flow axis and, sequentially in the down- stream direction, a simple metering orifice symmetri- cal with the axis, and flow patterning structure in- cluding a diverging flow director for directing the flow of fuel issuing from the metering orifice ra- dially outward relative to the axis to an annular region about the axis and a converging flow director for directing the fuel radially inward relative to the axis from a position radially outward thereof for direct "transparent" discharge thereafter from the injector. A discrete exit nozzle may be shaped to effect the requisite flow convergence, and the angle of that convergence affects the geometry of the final spray pattern. A swirl disc may be positioned intermediate the other two flow directors. By pre- selecting the angle at which channels in the swirl disc are skewed to the axis, it is possible to obtain respective ones of a variety of fuel spray patterns ranging from a wide angle hollow cone for an acute angle of tangentiality to a string of fuel droplets substantially along the axis when the swirl channels are substantially parallel the axis. The upper and lower ends of the swirl disc may be tapered.
416876
Essex Group Inc.
Swabey Ogilvy Renault
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