Carburettor enriching device

Details Carburettor enriching device Carburettor enriching device

1976-09-13

1977-08-30

Miles, Tim R.

Gas and liquid contact apparatus

Fluid distribution

Valved

261121A, F02M 704

Patent

active

040455211

ABSTRACT:
Enriching device for carburettors of internal combustion engines, which comprises an aeration gaged orifice located at the upper portion of the float tank of the carburettor, a fuel gaged orifice communicating with the bottom of said fuel tank, an air/fuel mixture gaged orifice disposed in a passage interconnecting said aeration gaged orifice and said fuel gaged orifice, and delivering said mixture at the level of the carburettor venturi, and an additional gaged orifice opening into the main passage of the carburettor, wherein said additional gaged orifice is located at the end of a pipe section projecting to a predetermined extent into the main passage upstream of said venturi and slightly upstream of the closed position of the starter shutter, whereby said additional gaged orifice, according to the negative pressure discrepancy existing between its position and that of the mixture gaged orifice will regulate the richness of the air/fuel mixture by performing successively as an additional air inlet orifice for producing a leaner mixture passing through the mixture gaged orifice under low or moderate engine load conditions, this function decreasing gradually to zero, during the range of part-load operating conditions, and then as a gaged orifice supplying an additional output of air/fuel mixture, therefore as an enriching device, under high-load engine conditions.

REFERENCES:
patent: 1929266 (1933-10-01), Viel
patent: 2103689 (1937-12-01), Mullen, Jr.
patent: 2208317 (1940-07-01), Beck
patent: 2852240 (1958-09-01), Goodyear
patent: 2981245 (1961-04-01), Sarto
patent: 3664648 (1972-05-01), Seeley, Jr.

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