Electromagnetically actuatable fuel injection valve

Fluid sprinkling – spraying – and diffusing – With system fluid relief or return to supply – Recirculation within nozzle

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2393975, 239585, 251139, F02M 5108

Patent

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043657478

ABSTRACT:
A fuel injection valve and a method for the automatic establishment of the desired armature stroke of the fuel injection valve are proposed which serves the purpose of injection at low fuel pressures into the intake tube of a mixture-compressing internal combustion engine with externally-supplied ignition. The fuel injection valve includes a magnetic coil surrounding a core and a flat armature guided by at least one guide diaphragm held on its outer circumference, which is firmly connected with a movable valve element cooperating with a fixed valve seat. The fuel delivered via a fuel inlet nozzle can proceed through apertures and recesses in the guide diaphragms past the valve seat to a fuel discharge nozzle by way of which a portion of the delivered fuel can flow back again into a fuel return line. Via an annular channel the fuel stream exiting from the nozzle bore can be prepared with air which surrounds the fuel stream.

REFERENCES:
patent: 2881980 (1959-04-01), Beck et al.
patent: 3567135 (1971-03-01), Gebert
patent: 3680794 (1972-08-01), Romann et al.
patent: 3702683 (1972-11-01), Sturmer
patent: 4101074 (1978-07-01), Kiwior
patent: 4215820 (1980-08-01), Renger
patent: 4245789 (1981-01-01), Gray

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