Impact of Intake Charge Preheating on a Biogas Run Dual Fuel Diesel Engine Using Ternary Blends of Diesel-Biodiesel-Ethanol
Publication: Journal of Energy Engineering
Volume 144, Issue 3
Abstract
In the pursuit of minimizing a considerable amount of imported fossil diesel and greenhouse gas (GHG) emissions, green fuels like biodiesel, ethanol, and biogas can be used efficiently under dual fuel mode (DFM) of a diesel engine. The present study aims to investigate the performance, combustion, and emissions (designated as overall performance) of a DFM engine run on various ternary blends of diesel-biodiesel-ethanol (D-B-E) as the pilot (but primary) fuel and biogas as the secondary fuel. The blends chosen were D70-B20-E10, D75-B20-E5, D72-B20-E8, D77-B15-E8, D67-B25-E8, and D100-B0-E0, for which the numerical values represent the volume percentage of the individual component in the blends. The blends are designated as TB-1, TB-2, TB-3, TB-4, TB-5, and TB-0, respectively. All experiments were conducted with these blends at the intake charge preheating temperature of 55°C () and at the optimized total fuel-air equivalence ratio (). In order to have a direct comparison, experiments were also conducted without preheating the intake charge (WPI), and this is designated as TB-0-WPI. On the basis of the engine’s overall performance, the TB-3 blend is found to be optimum among the tested blends with preheating. The maximum brake thermal efficiency (BTE) of 26.73% is achieved with the TB-3 blend, which is 5.04% higher in contrast to TB-1. The highest drop of carbon monoxide (CO) and hydrocarbon (HC) were 86.23 and 83.97%, respectively, in contrast to TB-0-WPI, whereas the maximum reduction as compared to pure diesel of 63.04% of oxides of nitrogen () is achieved with TB-0-WPI.
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Journal of Energy Engineering
Volume 144 • Issue 3 • June 2018
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©2018 American Society of Civil Engineers.
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Received: Sep 19, 2017
Accepted: Nov 22, 2017
Published online: Mar 30, 2018
Published in print: Jun 1, 2018
Discussion open until: Aug 30, 2018
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