Carburetor

Details Carburetor Carburetor

1983-06-24

1985-09-03

Miles, Tim

Gas and liquid contact apparatus

Fluid distribution

Pumping

261 51, 261 41D, F02M 708

Patent

active

045391637

ABSTRACT:
Several embodiments of charge forming devices embodying enrichment circuits that provide enrichment substantially only when the engine is running above its idle speed and below a predetermined slow speed so as to improve running without excessive fuel consumption under high speed conditions. In each embodiment, the enrichment circuit includes a port in the induction passage upstream of the idle position of the throttle valve and which is served by a fuel well. In accordance with one embodiment of the invention, the discharge of the enrichment circuit is controlled by a throttle valve position responsive valve. In this embodiment, the throttle valve position responsive valve may comprise the pumping element of the accelerating pump. In other embodiments of the invention, the discharge of the enrichment circuit is controlled by providing restricted communication between the fuel source and the enrichment fuel well.

REFERENCES:
patent: 1917562 (1933-07-01), Becker et al.
patent: 2235797 (1941-03-01), Carlson
patent: 2472692 (1949-06-01), Brown
patent: 2621029 (1952-12-01), Moseley
patent: 2964303 (1960-12-01), Smith et al.
patent: 3003754 (1961-10-01), Phillips
patent: 3167599 (1965-01-01), Brown et al.
patent: 3738622 (1973-06-01), Tuckey

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