Igniter for gas turbine engine
AssigneePratt & Whitney Canada Corp.
InventorsRichard FREER, Kian MCCALDON, Tin-Cheung John HU, Michel BOUSQUET, André FORTIN
Life of this patent
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Abstract
There is disclosed an igniter for a gas turbine engine including: a base, a glow plug heater rod, the glow plug heater rod extending from the base along an axis and terminating in a rod end, a sleeve extending circumferentially around the glow plug heater rod along at least a portion of a length of the glow plug heater rod, the sleeve having an inner surface spaced from the glow plug heater rod to provide a gap between the inner surface and the glow plug heater rod, the gap extending radially relative to said axis.
Claims20
An igniter for a gas turbine engine comprising:
- a base, a glow plug heater rod, the glow plug heater rod extending from the base along an axis and terminating in a rod end, a sleeve extending circumferentially around the glow plug heater rod along at least a portion of a length of the glow plug heater rod, the sleeve having an inner surface spaced from the glow plug heater rod to provide a gap between the inner surface and the glow plug heater rod, the gap extending radially relative to said axis.
A method of operating an igniter of a gas turbine engine, comprising:
- receiving a mixture of air and fuel to be ignited in a flow circulation area around a heating section of a glow plug heater rod;
- igniting the mixture of the air and the fuel with the heating section of the heater rod;
- and
- impeding fluid circulation of the ignited mixture of the air and the fuel from flowing towards the base, between a sleeve and the heater rod.
A gas turbine engine comprising:
- a casing;
- a combustor liner within the casing and spaced apart therefrom, the combustor liner delimiting a combustion chamber;
- and an igniter, the igniter having a base connected to the casing and a glow plug heater rod, the glow plug heater rod extending from the base along an axis and terminating in a rod end, a sleeve extending circumferentially around the glow plug heater rod along at least a portion of a length of the glow plug heater rod, the sleeve having an inner surface spaced from the heater rod to provide a gap between the inner surface and the heater, the gap extending radially relative to said axis.
Dependencies are inferred from the claim text.