Numerical simulation and parametric study of pre-chamber gas engine using computational fluid dynamics
Author(s):
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
burn conditions and stable combustion. Therefore, in the current research, the effect of rotation ratio, equivalence ratio and ignition time on pressure, temperature, engine output power and pollutant emissions of a pre-chambered gas engine was investigated using computational fluid dynamics. This research generally consists of three parts; in the first part, the combustion chamber geometry of an engine equipped with pre-chamber technology is drawn and gridded. In the second step, dynamic motion is given to the combustion chamber and the chamber is simulated in motoring mode (without combustion). In the third step, the combustion process inside the chamber was analyzed using Fluent software. This analysis, which included methods for solving the problem of computational network dynamics and the transfer of components due to combustion, provides the profiles of temperature and pressure, fuel consumption, output work, and other functional characteristics of the engine. Analysis of the effect of air fuel ratio showed that the best operating equivalence ratio at full load is 2, which is the equivalence ratio of the base engine. Also, the results showed that the ignition time of 12 and 15 degrees before the top dead point shows acceptable operating conditions. Ignition timing 12 showed lower NOx production and higher exhaust gas temperature compared to ignition timing 15.
Keywords:
Language:
Persian
Published:
Journal of Fuel and Combustion, Volume:16 Issue: 4, 2024
Pages:
61 to 80
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