Simulation of the operating process of a spark ignition engine powered by carbon-free fuel
Abstract
The results of mathematical modeling of the operating process of a spark-ignition engine when running on gasoline and two carbon-free fuels: hydrogen and ammonia are presented. To carry out the computational study, a software package developed at MADI was used. The heat release process in the engine combustion chamber was modeled using the formula proposed by Wiebe. For each of the fuels under study, the index m of the Wiebe formula was determined. The choice of the value of m was carried out based on the condition of coincidence of experimental and calculated data on the maximum cycle pressure and the highest rate of pressure increase. At the second stage of computational studies, the impact on the performance of a spark-ignition engine from switching to hydrogen and ammonia was assessed. The composition of the mixture in this study was assumed to be stoichiometric. With the transition to hydrogen, the maximum value of the heat release rate increases by 17.5% compared to gasoline, while with ammonia it increases by 1.6%. Engine operation on ammonia has the highest hourly fuel consumption, which is 2.6 times higher than that of gasoline and 6.2 times higher than that of hydrogen.
About the Authors
Van Dung Nguyen
MADI
Russian Federation
Russian Federation
postgraduate
Andrey Yu. Dunin
MADI
Russian Federation
Russian Federation
Doctor of Sciences (Technical), associate professor
Elmira U. Akhmetzhanova
MADI
Russian Federation
Russian Federation
postgraduate
Andrey M. Petrov
MADI
Russian Federation
Russian Federation
postgraduate
Dmitry S. Konyushkov
MADI
Russian Federation
Russian Federation
postgraduate
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Review
Рецензент: М.Г. Шатров, д-р техн. наук, проф., МАДИ
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