(57) Carburetor for internal combustion engines with controlled ignition, especially designed
to equip vehicles, of the type wherein - in order to obtain a fine and continuous
regulation of the feed mixture strength - a controlled depression is produced into
the top of the constant level float chamber. For this purpose, the top of the float
chamber is connected to external atmosphere, both downstream of the air register throttle
and in correspondence of the rim of said throttle, the position of said air register
throttle being determined by an electric motor controlled by sensors detecting the
combustion state in the engine.
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