Abstract: Internal combustion engines produce a number of emissions including oxides of nitrogen, NOx. One manner of reducing NOx production used in gas turbine engines is through the use of catalytic reactors. Catalytic reactors reduce the ignition temperatures required for complete combustion of a fuel air mixture. However, high temperatures present in catalytic reactors cause sintering of the substrate, vaporization of the catalyst, and sintering of catalyst and metal substrate. The present invention is directed at controlling the temperature of a catalytic reactor in an internal combustion engine. An exothermic catalyst coats a first side of a substrate in the catalytic reactor. An endothermic catalyst coats a second side of the substrate.

Abstract: Internal combustion engines produce a number of emissions including oxides of nitrogen, NOx. One manner of reducing NOx production used in gas turbine engines is through the use of catalytic reactors. Catalytic reactors reduce the ignition temperatures required for complete combustion of a fuel air mixture. However, high temperatures present in catalytic reactors cause sintering of the substrate, vaporization of the catalyst, and sintering of catalyst and metal substrate. The present invention is directed at controlling the temperature of a catalytic reactor in an internal combustion engine. An exothermic catalyst coats a first side of a substrate in the catalytic reactor. An endothermic catalyst coats a second side of the substrate.

Abstract: In the operation of gas turbine engines, it is an ever increasing goal to reduce the amount of harmful elements contained within the emissions of the engine. In particular, it is of primary importance to reduce the amounts of nitrogen oxides contained within the emissions. The use of a catalytic combustor is one known means by which the formation of nitrogen oxides may be controlled. However, the use of a catalytic combustor in a gas turbine engine has been known to be effective primarily in the upper ranges of engine operation. The present invention provides a combustor arrangement for a gas turbine engine that employs a first combustor means that utilizes a catalytic bed to react a mixture of fuel and air during an upper range of engine operation and a second combustor means that utilizes a plurality of premixed fuel injectors to ignite a mixture of fuel and air during a lower range of engine operation.

Abstract: Combustion apparatus of the premix/fuel lean type which employ jet induced circulation to inhibit the formation of atmospheric pollutants.

Abstract: Combustion apparatus of the premix/fuel lean type which employ jet induced circulation to inhibit the formation of atmospheric pollutants.