Measures to improve anti-knock quality for four-stroke ignited kerosene aviation engine

A one-dimensional performance simulation for a four-stroke ignited turbocharging aviation engine with different fuels was made by an engine performance simulation software GT-Power to optimize the anti-knock quality. Through the reasonable adjustment of the compression ratio, boost pressure, air-fuel ratio, cylinder diameter, ignition timing, knock tendency of the engine using the new fuel was optimized, and engines main output parameters were roughly maintained. When replacing the No.93 gasoline fuel with a new type fuel of 61 octane number, the power can reach 89% of the original power output after using the method without expanding the diameter of the cylinder and 95% after using the method of expanding the diameter of the cylinder; the specific fuel consumption increased about 5.4% and 6.1%, respectively; and the exhaust temperature increased about 11.4% and 13.4%, respectively.