Fuel enrichment apparatus for gaseous fuel mixers

Details Fuel enrichment apparatus for gaseous fuel mixers Fuel enrichment apparatus for gaseous fuel mixers

F - Mech Eng,Light,Heat,Weapons

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F02M 21/04 (2006.01) F02M 21/02 (2006.01)

Patent

CA 1145214

077072-MST FUEL ENRICHMENT APPARATUS FOR GASEOUS FUEL MIXERS Abstract: A fuel enrichment apparatus and method is shown for a gaseous fuel carburetor of either a fixed venturi or air valve type. The apparatus provides fuel enriching at the starting (Fig. 1) and wide open (Fig. 4) throttle conditions of the carburetor when the pressure drop in the induction passage is at a minimum. The apparatus (44) also economizes on fuel usage by being closed to fuel transfer at idle speed and normal engine speed (Fig. 3). The apparatus operates from the fuel supply line (28) to the carburetor with only the fuel pressure available in that line, thereby obviating the need for either a second fuel line or a high pressure fuel line.

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