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  • Effect of combustion chamber shape on CNG engine in-cylinder flow and combustion process

    • 摘要：

      During the development of the low-emission 4102 CNG natural gas engine, its original combustion chamber and two additionally designed shapes of the combustion chamber, the wedge-shaped and the arc-shaped chambers were modelled and simulated with AVL FIRE code. The effects of the combustion chamber shape on the in-cylinder flow and the combustion process were studied comparatively. The simulation results show that in the engine with the arc-shaped combustion chamber, compared with that with the original combustion chamber, the velocities of the mixture around the spark plug are lower, the initial flame core is steadier, the flame propagation is faster, the combustion duration is shorter, and the maximum combustion pressure is 12.7% higher, all those demonstrate that the arc-shaped combustion chamber is beneficial to improving the natural gas engine performance.

    • 作者：

      Li Ping Yang;骏 李;Ying Gao;Xin Li;Li Yuan Wang

    • 刊名：

      Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition)

    • 在线出版时间：

      2007-11