(under subclass 479) Apparatus in which the valve controlled is a second or auxiliary inlet to the line-carrying the suction induced flow.
(1) Note. Many of patents classified in this subclass include valves for supplying additional fuel, air or other fluid to the flow through the intake passage of an internal combustion engine.
SEE OR SEARCH THIS CLASS, SUBCLASS:
111+, for self-correlating branched flow systems having plural inflows, especially subclass 114 for those in which one flow supplements another.
