A Diesel Engine with a Catalytic Piston Surface to Propel Small Aircraft at High Altitudes—A Theoretical Study

摘要: Due to the oxygen shortage at high altitudes, use of diesel engines in small aircraft is limited a low ceiling level. Here, we propose significantly extend level by introducing an in-cylinder steam reforming system. In this arrangement, fuel direct-injection assembly comprises two-stage process. first stage, blend methanol and water injected into hot previously compressed cylinder charge onto catalyst. Residual heat absorbed due evaporation steam-reforming process produce hydrogen. second with lower ignition temperature than hydrogen initiate combustion, while (from stage) released through oxidation. Essentially, exploited extra fuel, which increases cycle efficiency. content increased additional atoms that are included particular molecules. These when decomposed during We show owing addition cylinder, flight can be extended from 5000 9000 ft, indicated efficiency increase up 6%.