Patent ID: 7124998

Claim:
An electromagnetically-actuated fuel gas supply valve for controlling flow of fuel gas from a fuel gas line to a combustion chamber of a gas engine, said fuel gas supply valve comprising; a gas connection at a first end for attachment to an end of the fuel gas line and a Venturi tube meter at an opposite second end for communication with the combustion chamber of the gas engine, a valve seat located between said first and second ends, said valve seat defining at least one flow through opening, an elongated stamp which extends through said valve seat and is longitudinally movable, a sealing plate which is attached to said stamp between said valve seat and said second end of said valve to be perpendicularly movable toward and away from a barrier surface of said valve seat, said sealing plate including at least one discharge opening for delivering fuel gas therethrough to said Venturi tube meter, an anchor plate in said valve between said first end and said valve seat, a solenoid in said valve between said anchor plate and said valve seat to move said stamp and sealing plate, said Venturi tube meter having converging walls zone, a neck and diverging walls forming an expansion zone, and having a cross-section which is smaller than the sum of effective flow through cross-sections between the valve seat and opened sealing plate.