Importance

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Abstract

A valve for bringing gaseous fuel into the combustion chamber (1) of gas engines includes a solenoid valve (5) controlling the fuel supply (2) and an adjoining check valve (7) designed as a poppet valve, which is closed by the force of a spring and which opens in the direction of the combustion chamber through the pressure of gas flowing from the opened solenoid valve (5). The stem (11) of a poppet is connected to a step piston (12) on the side that faces away from the head (10) of the poppet whereby the step piston's larger upper side (13) facing away from the poppet and the opposite smaller underside (14) are biased by the fuel pressure existing in an intermediate chamber (9) located between the solenoid valve (5) and the head (10), and whereby the step piston's step area (15), being the difference between the two step piston areas (13, 14), is influenced by an essentially constant pressure, and whereby the step area (15) of the step piston (12) is significantly larger than the actuation area that remains between the stem and the seat area of the valve opening.

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First Claim