VALVE FOR METERED DELIVERY OF FUEL VAPORS Russian patent published in 2002 - IPC

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: invention relates to metered delivery of fuel VAPORS evaporating from fuel tank into intake manifold of internal combustion engine. Valve for metered delivery of fuel VAPORS from fuel tank has longitudinal axle. Valve body is provided with intake branch pipe for connection to corresponding branch pipe of tank or to adsorption filter for fuel VAPORS installed behind the tank, and with outlet branch pipe for connection to intake manifold. Valve element is arranged inside body between intake and outlet branch pipes, is provided with drive operated by electromagnet with magnetic core and it engages with seat made on corresponding seat element. Nozzle made in outlet branch pipe has converging and diverging parts. Clearance is provided between valve seat and outlet section of nozzle in direction of longitudinal axis of valve. EFFECT: simplified design, provision of quick response of valve and accurate control of flow rate. 12 cl, 3 dwg