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摘要

Valve device includes a valve chamber containing three spherical members in stacked relation which produce a limited pulsating air flow that is metered in precise amounts at any given time into the fuel/air path of a gasoline powered internal combustion engine. The valve chamber has a main entry orifice and one or more supplemental entry orifices, the size and number of which may be varied to obtain the desired range or spread of frequencies for a particular engine over its entire operating range.