In order to study the combustion characteristics of aviation kerosene in the spark ignition aviation piston engine

an aviation piston engine test rig capable of simultaneously burning gasoline-aviation kerosene was reconstructed. And a three-dimensional simulation model of the engine combustion chamber was established. Using the combination of test and three-dimensional simulation

the difference of combustion characteristics between gasoline and aviation kerosene was studied. The result showed that under the condition of low speed and small load

the indicated mean effective pressure (IMEP) was less than 05 MPa; by adjusting the operating parameters such as ignition timing

the aviation kerosene can reach the combustion characteristics similar to gasoline; as the engine speed and load increased

the aviation kerosene combustion characteristics presented the extended flame retardation

the increased combustion duration

the reduced maximum pressure

and the burning center of gravity moved backward

accompanied by obvious knocking. Under high speed conditions

aviation kerosene combustion was affected by knocking

and the load can only be increased to 21%.