A heater includes a ceramic body of bar shape; and a heat-generating resistor disposed in an inside of the ceramic body, when viewed in a transverse section, the heat-generating resistor including at least one step portion provided in an outer periphery part of the heat-generating resistor, the at least one step portion having such a shape that semicircular portions bisected in a diametrical direction of the heat-generating resistor deviate from each other along the diametrical direction.

There is disclosed an igniter for a gas turbine engine including: a base; a glow plug heater rod extending from the base along an axis and terminating in a rod end; and a structure having open porosity disposed adjacent the glow plug heater rod. A method of operating the igniter and a gas turbine engine having such an igniter are also disclosed.

Sparkless igniters for pilot services comprising hot surface igniter elements, and methods for operating these igniters without the use of flame rods or thermocouples. The electrical resistance of the hot surface igniter element is measured and used to control the operation of the igniters using a suitable burner management system. The measured electrical resistance may also be manipulated to yield a control parameter for use in the burner management system. The igniters are designed to prevent quenching of the hot surface elements by the fuel-air mixture. The igniters optionally permit easy swap out of hot surface igniter elements.

A home cooking appliance having an electrode chamber for a burner assembly is provided. The home cooking appliance includes a burner rail, maintop surface, burner assembly including a burner electrode, igniter box below the burner rail and maintop surface, and an electrode chamber on the burner rail. The electrode chamber includes a body having a cavity and a first opening at a first end of the body, wherein a portion of the burner electrode is disposed in the cavity, an electrical contact surface in the cavity that engages and electrically connects the electrical contact surface to the portion of the burner electrode, and an electrical connector at a second end of the body, the electrical connector being electrically connected to the electrical contact surface and to the igniter box, thereby electrically connecting the igniter box to the portion of the burner electrode.

There is disclosed an igniter for a gas turbine engine including: a base, a glow plug heater rod extending from the base along an axis and terminating in a rod end, and a plurality of fins disposed circumferentially around the glow plug heater rod, the fins extending axially along at least a portion of the glow plug heater rod. A gas turbine engine including such an igniter is further disclosed.

An engine exhaust treatment apparatus, which suppresses thermal damage to an electrothermal ignition apparatus, includes: an exhaust passage; an oxidation catalyst disposed in the exhaust passage; a combustible gas generator; a combustible gas supplying passage; a heat dissipation port opened upstream in the exhaust passage from the oxidation catalyst and in a downstream part of the combustible gas supplying passage, the exhaust passage and the combustible gas supplying passage communicating with each other through the heat dissipation port; and an electrothermal ignition apparatus disposed in the combustible gas supplying passage. Heat of flaming combustion of the combustible gas ignited by the electrothermal ignition apparatus is supplied to the exhaust passage, to raise the temperature of exhaust in the exhaust passage. A heat dissipation plate is attached to an outer projecting portion of the electrothermal ignition apparatus. The outer projecting portion projects outside a wall of the exhaust treatment apparatus.

An engine exhaust treatment apparatus, which suppresses thermal damage to an electrothermal ignition apparatus, includes: an exhaust passage; an oxidation catalyst disposed in the exhaust passage; a combustible gas generator; a combustible gas supplying passage; a heat dissipation port opened upstream in the exhaust passage from the oxidation catalyst and in a downstream part of the combustible gas supplying passage, the exhaust passage and the combustible gas supplying passage communicating with each other through the heat dissipation port; and an electrothermal ignition apparatus disposed in the combustible gas supplying passage. Heat of flaming combustion of the combustible gas ignited by the electrothermal ignition apparatus is supplied to the exhaust passage, to raise the temperature of exhaust in the exhaust passage. A heat dissipation plate is attached to an outer projecting portion of the electrothermal ignition apparatus. The outer projecting portion projects outside a wall of the exhaust treatment apparatus.

Pilot assemblies comprising a fire path tubing and pilot tubing in fluid communication through a pilot nozzle for burning waste gases in enclosed ground flares and elevated flare stacks are disclosed. A plurality of flame segments is generated using a hot surface ignition element in the fire path tubing and ignites fuel/air mixture flowing through the pilot tubing into a pilot nozzle to produce a reliable pilot flame. Methods for operating the pilot assemblies are disclosed.

A method of servicing a gas turbine engine having an igniter socket, the method comprising: inserting a glow plug into the igniter socket of the gas turbine engine until a rod end of a glow plug heater rod of the glow plug is exposed to a combustion chamber of the gas turbine engine; and blocking a gap between the glow plug heater rod and an aperture defined in a combustor liner of the gas turbine engine to block fluid communication between the combustion chamber and an environment outside the combustion chamber via the aperture.

A fluid heating pre-start system includes a fluid circuit. The fluid circuit includes a circulating pump, a heat exchanger, and a fluid jacket coupled to a piece of equipment. The pre-start system includes a heater positioned to heat the fluid in the fluid circuit using the heat exchanger. The pre-start system includes a controller positioned to control the operation of the fluid circuit and the heater. The pre-start system may be run until the piece of equipment is preheated to a desired temperature before the piece of equipment is activated.