Patent ID: 8573245
Filing Date: 2013-11-05
Classification: F02C,F16K,Y10T

Abstract:
1. A fuel valve, comprising: a valve body defining a main passageway communicable with fuel inlet and outlet ports, an actuation pressure area communicating with a pressure port, and a vented area communicating with a vent port; a poppet actuator disposed within the valve body for reciprocal movement along a stroke axis, the poppet actuator having a piston section and an annular valve section, the piston section creating a dynamic seal between the actuation pressure area and the fuel inlet and outlet ports, the valve section creating a dynamic seal between the vented area and the fuel inlet and outlet ports and creating a static seal between the fuel inlet and outlet ports when the valve is in a closed position, wherein the piston section has internal porting leading between an entry orifice and an exit orifice; a collector tube disposed within the vented area and having an internal passageway communicating the poppet exit orifice with the vent port of the valve body; and a plurality of return springs in a parallel force arrangement providing a force opposing the actuation pressure, wherein a first of the return springs contacts at one end an enlarged base of the collector tube and the poppet actuator at another end.