| CPC F02M 21/0233 (2013.01) [F02D 41/0027 (2013.01); F02D 41/3011 (2013.01); F02M 21/0239 (2013.01); Y02T 10/30 (2013.01)] | 20 Claims |

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1. A flow valve assembly for achieving a desired flowrate for a gaseous fuel supply, comprising:
a valve body including a fuel flow inlet, a fuel flow outlet, and an orifice coupling fuel flow inlet and outlet;
a valve member including a shaft and a flow control surface positioned on a first end of the shaft and configured to engage the orifice to control the flowrate of the fuel supply;
a linear motion actuator coupled with a second end of the shaft and configured to move the valve member axially relative to the orifice; and
a controller configured to control the linear motion actuator to move the flow control surface to a position to provide for a desired flowrate of the fuel supply, wherein the desired flowrate is a supersonic value.
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