Muhammad Mansha and Hassan Javed S.

pp. 545 - 554

Abstract

In this work, a detailed kinetic reaction mechanism, consisting of 208 reactions and 79 species, has been developed to
describe the oxidation of simple hydrocarbon fuel (natural gas) in IC engine. The performance of the proposed mechanism
is tested using simulation, tool CHEMKIN 4.1.1, and experimental measurements. The simulation results of the proposed
reaction scheme were compared with those of reference mechanisms (GRI v3.0 and Konnov 0.5 version) as well as experimental data. Based upon simulation results, it can be concluded that the proposed mechanism shows good concordances
with GR I3.0 mechanism especially in the prediction of temperature, pressure, and major product species (H₂O, CO₂) profiles
at stoichiometric conditions (φ= 1.0). Although, there are some discrepancies among each predicted profile, the proposed
detailed mechanism is good to describe the oxidation of natural gas in IC engine. The experimental data also showed favorable results for prediction of major product species (CO₂
, H₂O & CO) at various engine operating speeds in idle mode.