AUXILIARY AIR VALVE

摘要

The present auxiliary air valve controls admission of supplementary air to the fuel mixture of an internal combustion engine responsive to special demand. The device is comprised of a pair of body elements assembled to provide a valve housing with opposed inlet and outlet ports accommodating a suction displaceable valve normally spring-biased externally of said housing into flow-blocking abutment with the inlet port. The housing is expandable and contractable to vary the spacing of the ports and the degree of spring bias is also independently adjustable, thus affording control over both the minimum level of vacuum at which the device opens to admit auxiliary air to the intake manifold, and the maximum level of vacuum at which the supply of such air will then be reduced.