Carburetor aerator

Claim 1

An internal combustion engine aerator apparatus for introducing additional air into the air-fuel mixture of an engine of the kind having a crankcase, a carburetor, and air-fuel intake structure including an intake manifold and in combination with gases vented from the crankcase through a first smog valve, said aerator apparatus comprising, a pcv valve hose connected between the crankcase and the air-fuel intake structure, an aerator hose for conducting the additional air to be introduced, an adjustable valve associated with the aerator hose for regulating the amount of air that can be drawn through the aerator hose by the engine intake suction, unidirectional valve means at the inlet end of the aerator hose for permitting substantially free entry of atmospheric air into the aerator hose under all conditions of engine operation from start-up through idle, acceleration, deceleration and steady state operation at all speeds and loads while preventing reverse flow of crankcase gases or loss of vacuum through said inlet end, fitting means for conducting the other end of the aerator hose to the engine air-fuel intake structure at a point downstream of the carburetor in parallel with the pcv valve hose and closely adjacent to the point of connection of the pcv valve hose to said engine air-fuel intake structure, wherein said unidirectional valve means is a second smog valve having a valve seat and a valve check element and mounted vertically to insure proper operation of the valve check element on the valve seat without binding, and including a fender well close to said engine and wherein the second smog valve is mounted upright on the fender well so that the air passing through said second valve is warmed.