Metering plate for reduction in discharge coefficient variation between gaseous fuel injectors
First Claim
1. A metering plate for a poppet-style valve, the metering plate comprising:
- a fluid-directing body, the fluid-directing body defining a first surface and 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.
1 Assignment
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Accused Products
Abstract
Provided is a metering plate for a poppet-style valve in which the metering plate includes a peripheral edge structure that reduces the impact of edge variation as a result of typical manufacturing tolerances. The peripheral edge structure is located at the sealing surface and extends from the peripheral surface of the metering plate so as to avoid a sharp edge at the outer diameter of the metering plate. In embodiments, the peripheral edge structure is a chamfered surface or a curved surface. Small dimensional deviations from these surfaces resulting from typical manufacturing tolerances do not have a significant effect on the discharge coefficient of the metering plate. In this way, the discharge coefficients of poppet-style valves across a fluid admission system are contained in a much tighter range, thereby enhancing the efficiency of and control over the fluid admission system.
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Citations
26 Claims
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1. A metering plate for a poppet-style valve, the metering plate comprising:
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a fluid-directing body, the fluid-directing body defining a first surface and 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A poppet-style valve, comprising:
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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. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. A fluid admission system, comprising:
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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. - View Dependent Claims (26)
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Specification