Metering plate for reduction in discharge coefficient variation between gaseous fuel injectors

A poppet-style valve, comprising:

• a movable metering plate having:
• a first plurality of lands and a first plurality of grooves formed into a first surface;
• at least one peripheral surface substantially perpendicular to the first surface;
• and
• at least one peripheral edge structure located proximal to the first surface, the at least one peripheral edge structure extending between the first surface and the at least one peripheral surface;
• wherein each of the at least one peripheral edge structure includes a transition surface, the transition surface extending at least a portion of the at least one peripheral edge structure between the first surface and the at least one peripheral surface;
• a fixed metering plate, having a second plurality of lands and a second plurality of grooves;
• and
• a solenoid configured to electromagnetically move the movable metering plate between an open position and a closed position;
• wherein, in the closed position, the first plurality of lands and the second plurality of lands are in physical contact such that the first plurality of lands blocks fluid flow through the second plurality of grooves and the second plurality of lands blocks fluid flow through the first plurality of grooves.

A fluid admission system, comprising:

• a gaseous intake manifold;
• a fluid supply manifold;
• and
• at least two poppet-style valves, each poppet-style valve configured to allow fluid flow from the fluid supply manifold into the gaseous intake manifold in an open configuration and to prevent fluid flow from the fluid supply manifold into the gaseous intake manifold in a closed configuration;
• wherein each poppet-style valve includes:
• a fixed metering plate;
• a movable metering plate;
• and
• a solenoid configured to electromagnetically actuate the poppet-style valve between the open configuration in which the fixed metering plate and the movable metering plate are separated by a gap and the closed configuration in which the fixed metering plate and the movable metering plate are in direct, physical contact;
• wherein the movable metering plate is defined by:
• a first surface,
• at least one peripheral surface substantially perpendicular to the first surface;
• and
• at least one peripheral edge structure located proximal to the first surface, the at least one peripheral edge structure extending between the first surface and the at least one peripheral surface;
• wherein each of the at least one peripheral edge structure includes a transition surface, the transition surface extending at least a portion of the at least one peripheral edge structure between the first surface and the at least one peripheral surface.