Power plants – Combustion products used as motive fluid – Process
Reexamination Certificate
2006-09-05
2006-09-05
Casaregola, Louis J. (Department: 3746)
Power plants
Combustion products used as motive fluid
Process
Reexamination Certificate
active
07100378
ABSTRACT:
A method for selectively interrupting fuel flow to an engine. The method comprises: in a normal mode, enabling a normal interruption signal for interrupting the fuel flow in response to a normal shutdown signal; and in an emergency mode, enabling an emergency interruption signal for interrupting the fuel flow in response to at least the normal shutdown signal and an emergency shutdown signal having transient characteristics. The normal shutdown signal has a given normal value and the emergency shutdown signal has a peak value substantially larger than the given normal value, whereby the fuel flow interrupting occurs faster in response to the emergency shutdown signal than in response to the normal shutdown signal.
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Casaregola Louis J.
Ogilvy Renault LLP
Pratt & Whitney Canada Corp.
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