Fuel injection valve, particularly for diesel engines

Details Fuel injection valve, particularly for diesel engines Fuel injection valve, particularly for diesel engines

1982-09-09

1984-09-25

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Terminal outlet formed between parts mounted for relative...

Spray fluid pressure responsive discharge modifier

239583, B05B 132, F02M 6120

Patent

active

044731892

ABSTRACT:
To provide a valve stroke or displacement characteristic with respect to closing force which is at first rapidly dropping and then, after a minimum closing force is reached again increasing, so that, as the valve needle reaches its final stroke, a hard impact is avoided and rapid closure of the valve, upon drop of injection pressure, will result, a magnet circuit (88) is established in the valve housing by a magnetic element (50) and an armature (66), one of the elements being seated in the housing and the other being coupled to the valve needle (18) to provide a closure force-versus-displacement characteristics which at first drops sharply and then flattens. Further magnetic elements formed by two magnets (70, 80), with like poles facing each other are provided, to furnish the closing force-versus-displacement characteristics which increases with increasing displacement, the composite of the two forces acting on the valve being in the form of a hanging curve (FIG. 2: 98) having a minimum (F.sub.6) approximately midway along the length of the stoke of the valve needle (18).

REFERENCES:
patent: 2667895 (1954-02-01), Pool et al.
patent: 2749181 (1956-06-01), Maxwell et al.
patent: 2901185 (1959-08-01), Dickey

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