A simulation for numerical analysis of internal combustion engines, both spark-ignited and compressionignited systems, running on duel fuel of Hydrogen and any hydrocarbon developed is presented in this report. The program coded using Matlab is used to simulate various engine conditions and discern its effect on the emissions. The engine emissions, including species like NOx, CO, and CO2, in accordance with the extent of hydrogen fraction, the equivalence fuel-air ratio, combustion equilibrium temperature and pressure are simulated. The paper focuses on simulation of exhaust emissions while using H-CNG blend. Simulation attempts to find an optimum extent of dualfuelling, equivalence ratio, combustion temperature with regard to quality of emissions. Key words:Hydrogen,Matlab,CNG,emissions etc 1
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