| 摘要 |
<p>PURPOSE:To improve combustion efficiency of mixture in a gas turbine engine in which a preheater is provided in the upstream of a catalyst combustor. CONSTITUTION:An electric preheater 45 connected to a power source 44 is provided in a small diameter part 42 on the upstream side of a catalyst combustor 12, and a catalyst carrying part 46 to carry a catalyst and a fuel nozzle 47 are provided at the downstream side. At a time of engine start, suction air sucked through an air inlet 421 is heated by a preheater 45 until the air temperature becomes higher than a catalyst activation temperature. The high temperature air is mixed with fuel jetted from the fuel nozzle 47, and then supplied to the catalyst carrying part 46, where it comes into contact with the catalyst so that it burns. The fuel supplied from the fuel nozzle 47 is mixed with the high temperature airstream having passed through the preheater 45. By this, vaporization of the fuel is promoted and uniform mixture of air and fuel is obtained. Thus. combustion efficiency is greatly improved.</p> |
