Abstract
AbstractThe control of ignition is one of the most critical issues in HCCI engines. It has been shown that using fuel additives play a significant role in reducing engine emission to satisfy the mandated EPA regulation. In this paper, the effect of additives such as hydrogen (H2), hydrogen peroxide (H2O2), formaldehyde (CH2O) and ethane (C2H6) on the control of ignition in natural gas HCCI engines has been investigated. The SENKIN code used to simulate the in-cylinder chemical reactions. The overall engine was modelled in the engine cycle simulation code, GT-Power. Then, the combustion results from SENKIN were transferred to the engine model to investigate the overall engine performance characteristics of the HCCI engine using a developed interface code that linked the SENKIN to GT-Power. The computational model was validated by available experimental data. The results showed that the calculated data were relatively in good agreement with the experimental data. It was found that an additive free mixture w...
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