F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
123/31
F02M 1/16 (2006.01) F02B 63/02 (2006.01)
Patent
CA 1091999
ABSTRACT OF THE DISCLOSURE Method and apparatus for supplying a priming charge of a fuel-air mixture to a conventionally aspirated internal combustion engine is disclosed wherein a pliable primer bulb either integral with a carburetor or located remote therefrom may be operator de- pressed to decrease an air volume confined by that bulb forcing air from that volume into a comparatively smaller fuel well. Air flow into that fuel well forces fuel therefrom upwardly through a hollow cylindrical tube and into a constricted region in the car- buretor throat to be mixed with air passing through that throat and into the engine. The tube leading from the fuel well into the constricted region or Venturi of the carburetor throat may addi- tionally be provided with a small air hole in a side wall thereof into which additional air is injected during the priming operation to provide some initial air mixed in the fuel as that fuel is sup- plied to the carburetor throat. Fuel from a conventional float regulated chamber is supplied by gravity flow to replenish the fuel displaced from the priming well during the priming operation. The tube extending from the priming well into the carburetor throat may constitute the only operating jet for the carburetor.
314438
Guntly Thomas G.
Schultz Curtis L.
Macrae & Co.
Tecumseh Products Company
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