KRAFTSTOFFRÜCKFÜHRVENTIL MIT ENTLÜFTUNG

摘要

A recirculating valve for the fuel system of an internal combustion engine includes a valve body with a fuel supply passage and a fuel return passage. An air separation chamber and a restricted orifice are provided in the fuel return passage. A pressure valve allows excess heated return fuel in the air separation chamber to recirculate with the fuel in the fuel supply passage. The valve also directs return air back to the tank and prevents the air from passing to the engine. A thermal actuator maintains the pressure valve in a closed condition when the fuel increases above a predetermined temperature. A relief valve can be provided in the fuel return outlet port to allow fuel to easily pass back to tank during normal operating conditions.