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Analysis and Optimization of Operational and Pollutant Attributes of Diesel Engine with CnT-Infused Orange Peel Biodiesel-Diesel Blend Fuel

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Journal of Thermal science 2024年第2期33卷 761-778页

作者： Ranjeet RAI R.R.sAHOO Mechanical Engineering Department GLA UniversityMathura281406India Mechanical Engineering Department IIT(BHU)Varanasi221005India

The current study is performed to find sustainable solutions for the future of transportation and environmental well-being.Both conventional methods and experimental design table(L16 Orthogonal Array)techniques have been employed to examine and optimize a diesel-powered engine's operational and pollutant parameters.The L16 Orthogonal Array is obtained through Taguchi's experimental design approach using Minitab 16 software.The experimental design incorporated three control variables,namely engine speed,fuel type,and engine load,each with four levels.The operational parameters,namely brake thermal efficiency(BTE)and brake specific fuel consumption(BsFC),as well as the emission characteristics,including hydrocarbon(HC),carbon monoxide(CO),nitrogen oxide(nO),and smoke emissions,were acquired using the L16 orthogonal array(OA) and subsequently examined.The utilization of methodologies such as signal-to-noise(s/n) ratio and grey analysis was employed to determine the optimal operational state of the engine to achieve maximum performance while minimizing emissions.The engine's ideal state of operation,in terms of BTE and BsFC,was determined to be at 75% engine load,1000 r/min engine speed,and using 10^(-4)(in vol) carbon nanotube incorporated 20% orange peel biodiesel(OPB20CnT100) blended fuel(A3-B1-C4).The study indicated that engine load significantly influenced BTE and BsFC,with 84.05% and 87.79% contribution factors,respectively.At 25% engine load,1000 r/min,and OPB20CnT100 fuel(A1-B1-C4) CO,smoke,nO,and HC emissions were the lowest.Engine load affects emissions the most.Engine BsFC increased 3.10% and nO emissions 1.77%.BTE,CO,smoke,and HC emissions decreased by 1.9%,12.29%,47.05%,and 47.22%,respectively,at optimal operating conditions concerning diesel fuel.This study shows that Taguchi-Grey's experimental design optimizes diesel engine operational and pollutant attributes.The outcomes revealed that orange peel biodiesel infused with CnT can replace diesel fuel in an environmentally friendly way.This alternative

关键词： Taguchi-Grey method OPB20CnT100 transesterification s/n ratio GRG HC CO and nO

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The polarization characteristics of single shot nanosecond laser-induced breakdown spectroscopy of Al

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Chinese Physics B 2013年第4期22卷 281-285页

作者：刘佳陶海岩高勋郝作强林景全 Changchun University of science and Technology

The polarization-resolved laser-induced breakdown spectroscopy （PRLIBs） technique, which can significantly reduce the polarized emission from laser plasma by placing a polarizer in front of the detector, is a powerful tool to improve the line-to-continuum ratio in LIBs applications. It is shown that the continuum emission from the plasma produced through ablating an Al sample by nanosecond laser pulses is much more polarized than the discrete line emission with the singlepulse PRLIBs technique. The effects of laser fluence and detection angle on the Al polarization spectrum are systematically explored experimentally. The calculated result of the polarization spectrum as a function of laser fluence shows that it is in agreement with the experimental observations.

关键词： polarization-resolved laser-induced breakdown spectroscopy laser plasma s/n ratio

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Investigation of ductile iron casting process parameters using Taguchi approach and response surface methodology

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China Foundry 2016年第5期13卷 352-360页

作者： A. Johnson santhosh A. R. Lakshmanan Dept of Mechanieal Engineering PPG Institute of Technology Coimbatore India Dept of Mechanical Engineering PSG College of Technology Coimbatore India

To find the optimized levels of various casting parameters in the ductile iron casting, various casting defects and the rejection rate were observed from a medium scale foundry. The controlled values of different casting parameters such as pouring temperature, inoculation, carbon equivalent, moisture content, green compression strength, permeability and mould hardness were selected. Three different melts of metal with 0.4wt.%, 0.6wt.%, and 0.8wt.% inoculation(Fe-si-Mg alloy and post inoculant) were produced using a 1-ton capacity coreless medium frequency induction furnace. L-27 orthogonal array with 3-level settings were chosen for the analysis. Responses for each run were observed. The signal-to-noise(s/n) ratio for each run was calculated using the Taguchi approach, and the optimized levels of different casting parameters were identified based on the s/n ratio. The analysis of variance for the casting acceptance percentage concludes that inoculation is the most significant factor affecting the castings' quality with a contribution percentage of 44%; an increase in inoculation results in a significant improvement in acceptance percentage of ductile iron castings. The experiment results showed that with the optimized parameters, the rejection rate was reduced from 16.98% to 6.07%.

关键词： optimized levels casting parameters s/n ratio Taguchi approach AnOVA ‘F’-Test

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