According to R.M. Bownes III:
>
>
> Remember that the needle is tapered. The further it goes up. the
> larger the opening, and the more gas gets out.
>
> And yes, the piston is raised by vacaum. There is a hole that leads to
> the chamber above the piston the pressure differential between the top
> and the bottom causes the piston to rise or fall as appropriate. Tis
> a great proof of bernoulii, venturi, or pitot, or somebodyorother.
>
Ok, I'm just having a hard time picturing how the fuel gets sprayed
(atomized, misted, spooged?) into a fine mixture with the air. Is the
pressure inside the housing low enough that the fuel really "jets" out of
the annular opening left by the needle?
Pat
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