THE SOLEX MAIN SPRAYING SYSTEM for economical cruising
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HOW IT WORKS The flexibility of the Solex jet system allows different mixtures to be supplied through the same circuit; hence ensuring the highest degree of economy. Here we are dealing with steady cruising conditions, through the same jet system as covers acceleration, and full power also. (Nos. 3 and 5 respectively in our series.) With a steady throttle opening, petrol is being drawn by engine depression through the spraying orifices, (oo), having been mixed with some air drawn through the holes in the side and bottom of the emulsion tube (et). At lower cruising speeds depression in the choke tube (K) is comparatively slight, and the flow of petrol through the main jet (G) is controlled by the size of (G) and the difference of level between the float chamber (L), and the bottom end of the emulsion tube (et). At this stage, the size of the correction jet (a) is not of material importance.
For higher cruising speeds the flow through the main jet (G) becomes affected more by the higher depression in the choke tube (K) than by the difference in level referred to above—and here, the increasing air supply from the. correction jet (a) adds more air in proportion. A change ofsize of (a) will now affect the extent to which depression in (K) draws on the main jet, as well as giving more air at a higher degree of emulsification. As a result, the Solex carburettor enables your car to cruise with the most economical mixture.