In-Cylinder Heat Transfer Characteristics of Hydrogen Fueled Engine: A Steady State Approach
M. M. Rahman, Khalaf I. Hamada, M. M. Noor, Rosli A. Bakar, K. Kadirgama and M. A. Maleque
DOI : 10.3844/ajessp.2010.124.129
American Journal of Environmental Sciences
Volume 6, Issue 2
This study presents in-cylinder heat transfer characteristics of a single cylinder port injection Hydrogen fueled Internal Combustion Engine (H2ICE) using a steady state approach. Problem statement: The differences in characteristics between hydrogen and hydrocarbon fuels are led to the difference in the behavior of physical processes during engine cycle. One of these processes is the in-cylinder heat transfer. Approach: One dimensional gas dynamic model was used to describe the heat transfer characteristics of the engine. The engine speed was varied from 2000-5000 rpm, crank angle from -40° to +100°, while Air-Fuel Ratio (AFR) was changed from stoichiometric to lean limit. Results: The simulated results showed higher heat transfer rate but lower heat transfer to total fuel energy ratio with increasing the engine speed. The in-cylinder pressure and temperature were increased with decreasing AFR and increasing engine speed. The in-cylinder air flow rate was increased linearly with increasing engine speed as well as air fuel ratio. Conclusion/Recommendations: The results showed that the AFR has a vital effect on characteristics variation while the engine speed has minor effect. These results can be utilized for the study of combustion process, fuel consumption, emission production and engine performance.
© 2010 M. M. Rahman, Khalaf I. Hamada, M. M. Noor, Rosli A. Bakar, K. Kadirgama and M. A. Maleque. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.