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    Energy, Exergy, and Emission Analysis of Biofuels in Compression Ignition Engine with Camphor Oil as Premixing Fuel
    (Wiley-V C H Verlag Gmbh, 2024) Gurusamy, Manikandaraja; Ponnusamy, Chandrasekaran; Varuvel, Edwin Geo
    This article aims to study the impact of camphor oil premixing with intake air on compression ignition (CI) engine characteristics powered with jatropha oil and cottonseed oil. The experiment is conducted on the direct injection compression engine attached to the premixing setup. The investigation reveals that premixing of camphor oil with cottonseed oil and jatropha oil escalates the thermal brake efficiency to 35.02% and 33.62% and brings down the brake-specific energy consumption to 10.27 and 10.70 kJ kWh-1. At all loading conditions, the premixing of camphor oil and the rise of camphor oil in premixing proportions increase the volumetric efficiency and cut the exhaust gas temperature. 20% premixing of camphor oil with cottonseed oil and jatropha oil drops the smoke opacity emissions by 22.23% and 11.86% and NO emission by 23.27% and 14.59%, respectively, at full load conditions. Further, it shows a 27.60% and 21.14% hike in CO emissions and a 31.34% and 31.87% hike in HC emissions at full load conditions. The in-cylinder pressure, heat release rate, and mean gas temperature increase with increasing the energy share of camphor oil in premixing. Overall, the premixing of camphor oil shows better CI engine attributes except HC and CO emissions. The premixing of camphor oil in air intake systems while compression ignition engines are powered with biofuels elevates the thermal efficiency, volumetric efficiency, and exergy efficiency and curtails nitric oxide and smoke emissions while increasing carbon monoxide and hydrocarbon emissions.image (c) 2023 WILEY-VCH GmbH
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    Experimental investigation of features of CI engine fueled with blends of camphor oil with biomass waste simarouba glauca oil
    (Taylor & Francis Inc, 2024) Gurusamy, Manikandaraja; Vijayaragavan, Mathanraj; Varuvel, Edwin Geo
    This research article examines engine performance characteristics using three different volumetric blending ratios of high-viscosity Simarouba glauca seed oil and low-viscosity camphor oil: 30% Simarouba glauca oil with 70% camphor oil (S30C70), 50% Simarouba glauca oil with 50% camphor oil (S50C50), and 70% Simarouba glauca oil with 30% camphor oil (S70C30). At full load, the thermal efficiency of S30C70 was found to be 8.18, 5.64, and 4.09% higher than that of S70C30, S50C50, and diesel fuel. In comparison to S70C30, S50C50, and diesel, the energy usage for brakes was determined to be 7.54, 5.34, and 3.64% lower. At high loading circumstances, S30C70 emits 57% less CO than the basic fuel value. Similar to the basic fuel, smoke and hydrocarbon emissions are trending downward. In comparison to base diesel, NO emission for the S30C70 fuel mix was about 20.33% higher under heavier loading situations. The maximum in-cylinder peak pressure and rate of pressure increase are exhibited in S30C70, which has a lower cetane number. The S30C70 fuel blend offers higher fuel exergy, relative efficiency, sustainability index, and exergy efficiency due to its low viscosity. The S30C70 fuel blend was found to have lower entropy than all other combinations tested. When a higher volume of camphor oil is added to the blended fuel, the performance characteristics of the diesel engine increase significantly.