Fuel ignition system having interlock protection and...

Details Fuel ignition system having interlock protection and... Fuel ignition system having interlock protection and...

G - Physics

05

D

341/19

G05D 23/19 (2006.01) F23N 5/20 (2006.01) F23N 5/24 (2006.01)

Patent

CA 1096464

FUEL IGNITION SYSTEM HAVING INTERLOCK PROTECTION AND ELECTRONIC VALVE LEAK DETECTION Abstract of the Disclosure: A fuel ignition system of the pilot ignition type including a control circuit for operating pilot and main valves of a redundant valve assembly, the control circuit having control relays which provide an interlock on start-up to prevent the energization of the valves under certain failure conditions, the control circuit including a flame sensing circuit which is operable to prevent start-up of the system when a flame is provided as the result of a leak con- dition for the pilot valve, and to terminate an ignition cycle causing complete shut off of fuel whenever a flame is provided as the result of a leak condition for the main valve. ;

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