航空活塞汽油机燃烧特性优化

In order to optimize the combustion characteristics of a two-stroke aviation piston gasoline engine, the influence of spark plug position, spark plug number and spark plug arrangement on combustion was studied. The simulation model of the gasoline engine combustion chamber was established by using Pro-E and AVL Fire software. The correctness of the model was verified by the in-cylinder pressure data. The different spark plug positions and different spark plug numbers were simulated and the results were analyzed. The results show that the double spark plug arrangement scheme is more beneficial to the rapid combustion of tissue than the single spark plug arrangement scheme,helping to promote combustion and heat release, shorten the duration of combustion; spark plug asymmetric arrangement scheme is more favorable than the symmetrical arrangement scheme for flame formation and diffusion.