<p>The environmental and economic assessment of alternative fuels is essential for sustainable usage in transportation. Compressed Natural Gas (CNG) is widely used as an alternative fuel all over the world. The present work compared the environmental and economic impact of CNG and conventional fossil fuel, gasoline. Experiments were conducted at different operating conditions of the engine fuelled with gasoline and CNG. The fuels' environmental impact was evaluated with the regulated and unregulated pollutants coming out of the engine exhaust. For economic assessment, annual fuel consumption and associated fuel cost were compared under similar engine operating conditions. The economic cost associated with the environmental impact was calculated based on carbon dioxide emissions and compared using carbon pricing. It was found that a CNG fueled engine has 12.7% lower fuel consumption than the gasoline engine, which leads to 56% lower fuel cost. It is due to the cumulative effect of higher calorific value and the lower fuel price of CNG compared to gasoline. Additionally, average environment emission and associated cost due to carbon dioxide (CO<sub>2</sub>) emission reduced by 29% using CNG over gasoline. This study shows that CNG can lead to lesser fuel consumption and associated fuel and environmental cost than gasoline.</p>

Environment and Economic Assessment of CNG and Gasoline Engines: An Experimental Analysis

Paper Proceedings: https://asmedigitalcollection.asme.org/ICEF/ICEF2021/volume/85512

ASME 2021 Internal Combustion Engine Division Fall Technical Conference (ICEF2021)

Supporting the need among researchers worldwide for additional online and multimedia content, ASME now offers the ASME Conference Video Collection. This platform will collect and provide long-term access to conference presentation videos, encompassing all technology areas within ASME's technical conference and events program. About 30,000-40,000 engineers across all mechanical engineering and related disciplines participate in ASME conferences each year. This includes authors of approximately 6,000 to 8,000 technical papers published by ASME, the majority of whom also submit video presentations for our virtual conferences. The video collection will be available as an add-on to existing product packages or as a separate subscription.