Abstract
Due to the popularity of diesel engines, utilization of fossil fuel has increased. However, fossil fuel resources are depleting and their prices are increasing day by day. Additionally, the emissions from the burning of petroleum-derived fuel is harming the global environment. This work covers the performance and emission parameters of a biogas-diesel dual-fuel mode diesel engine and compared them to baseline diesel. The experiment was conducted on a single-cylinder and four-stroke DI diesel engine with a maximum power output of 2.2 kW by varying engine load at a constant speed of 1500 RPM. The diesel was injected as factory setup, whereas biogas mixes with air and then delivered to the combustion chamber through intake manifold at various flow rates of 2, 4, and 6 L/min. At 2 L/min flow rate of biogas, the results were found to have better performance and lower emission, than that of the other flow; with an average reduction in BTE, HC, and NOx by 11.19, 0.52, and 19.91%, respectively, and an average increment in BSFC, CO, and CO2 by 11.81, 1.05, and 12.8%, respectively, as compared to diesel. The diesel replacement ratio was varied from 19.56 to 7.61% at zero engine load and 80% engine load with biogas energy share of 39.6 and 16.59%, respectively.
Highlights
11.81, 1.05, and 12.8%, respectively, as compared to diesel
A Geotech biogas analyzer was used to analyze the composition of raw biogas obtained from cow dung; all of its constituents are given in Table 1 below, and the raw biogas sample was taken using a Glucose bag
Biogas energy share (BGES) indicates whether biogas is a high-density or low-density fuel by the amount of energy it contributes to the total energy required in dual fuel mode
Summary
11.81, 1.05, and 12.8%, respectively, as compared to diesel. The diesel replacement ratio was varied from 19.56 to 7.61% at zero engine load and 80% engine load with biogas energy share of 39.6 and. The global energy demand is rising swiftly due to the increase in population and the continuous growth of industrialization, which leads to an increase in the usage of fossil fuels. The positive achievements in terms of efficiency associated with it are overshadowed by its high emission drawbacks Due to these reasons on the demand as well as the effect of petroleum-derived fuels, searching and utilizing an alternate fuel for diesel engines have become a prominent research area. Alternative fuels release a smaller amount of emissions when used in internal combustion engines as compared to conventional fuels, Bhuimbar and Kumarappa [7]. Biogas is a good gaseous alternative fuel to replace petroleum-derived fuels, Ayade and Academic Editors: Javier Ereña
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