Patent ID: 6505611
Filing Date: 2003-01-14
Classification: F02M,Y02T

Abstract:
An integrated fuel control unit for gas-operated internal combustion engines, which includes:a base, a primary diaphragm secured to said base and defining a primary fuel chamber, a primary orifice carried by said base, a primary control lever mounted on said base and coupled to said primary diaphragm for controlling flow of fuel through said primary orifice, a secondary diaphragm secured to said base and defining a secondary fuel chamber, a secondary orifice carried between said primary and secondary chambers, a secondary control lever mounted on said base and coupled to said secondary diaphragm for controlling flow of fuel through said secondary orifice, heat exchange means in said body for vaporizing fuel between said primary and secondary chambers, a high-pressure fuel lock-off carried by said body, including a solenoid coil mounted on said body and a solenoid plunger within said coil for selectivity closing an end of said primary orifice remote from said primary control lever, and a fuel inlet filter carried by said body for filtering fuel prior to passage to said primary orifice and said lock-off, wherein the fuel lock-off is operable independently of engine demand.