Abstract: An engine model was built to analyze the properties and emission characteristics of Natural Gas Hydrate (NGH)-gasoline mixture using GT-Power simulation code based on the original data of the NGH sample test in China. Simulations were carried out on the same engine model with mixtures with six different ratios of NGH-gasoline. The engine with different ratios of NGH-gasoline was investigated on properties of power, economy and emission. The results indicate that  the engine power, torque and fuel consumption rate decrease, while the engine thermal efficiency increases with increasing ratio of NGH in the mixture fuel. The results also show that the CO emission reduces with the NO emission unobviously changed.

Key words:  engine, natural gas hydrate (NGH), performance, emission, GT-Power code