Water induction system for internal combustion engines

Claim 1

A vacuum operated control valve for air-water mixtures comprising a vacuum chamber containing a vacuum responsive diaphragm; a rod interconnecting said diaphragm with a valve needle having a forwardly extending elongated neck, a thickened valve body having a forward portion containing sealing means and a less thick intermediate portion and a rearwardly tapering back portion terminating in a rearwardly extending tail which increases in circumference to a predetermined size; a housing surrounding said valve needle, said housing having a closed forward end through which the elongated neck of the valve needle extends an open rear end and an internally tapered neck defining an exit port which approximates the largest diameter of the valve needle tail, said portion of the housing forward of the tapered neck having the same diameter as the forward portion of the valve body such that the valve body engages the housing in a fluid tight relationship, said tapered neck being adapted to seat the tapered portion of the valve body with the valve needle tail extending through and rearwardly of the exit port; an inlet port in said housing adjacent the intermediate portion of the valve body and forward of the tapered neck; a valve spring surrounding the elongated neck of the valve needle and positioned in the housing between the closed forward end thereof and the valve body such that the valve needle is tensioned in a closed position sealing the exit port from the inlet port in a fluid tight relationship in the absence of vacuum pressure.