Fuel injection system and its nozzle holder

Fluid sprinkling – spraying – and diffusing – Flow regulator operated concurrently with intermittent fluid...

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239 95, 2395333, B05B 130

Patent

active

041113659

ABSTRACT:
A fuel injection system comprises a cam, an injection pump, a delivery valve, an injection pipe, a nozzle holder, and a nozzle. The fuel oil passage in the nozzle holder is reduced in diameter as compared with the inside diameter of the injection pipe, with the ratio F3/F1, or the ratio of the effective flow-passage cross sectional area F3 of the fuel oil passage to that F1 of the injection pipe, ranging from about 0.5 to 0.15, over the length l of the fuel oil passage which is 90 to 30 times the inside diameter of the injection pipe, so that the fluctuation of fuel pressure in the injection pipe is converted to kinetic energy thereby to control abnormalities of fuel injection. The long and narrow fuel oil passage in the nozzle holder is formed by inserting a hollow synthetic resin rod having a small-diameter center hole into an arial bore in the holder body, or by pouring molten synthetic resin into the axial bore and then forming the hole therein on solidification, or by placing a core wire concentrically and pouring molten synthetic resin into the bore and then pulling out the core from the solidified resin.

REFERENCES:
patent: 2627254 (1953-02-01), De Juchasz
patent: 3409225 (1968-11-01), Maddalozzo et al.
patent: 3662959 (1972-05-01), Sample, Jr.

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