A comparative study of combustion, emission, and performance characteristics of rice-bran-, neem-, and cottonseed-oil biodiesels with varying degree of unsaturation

Dhamodaran, Gopinath; Krishnan, Raishma; Pochareddy, Yashwanth Kutti; Pyarelal, Homeshwar Machgahe; Sivasubramanian, Harish; Ganeshram, Aditya Krishna

doi:10.1016/j.fuel.2016.09.062

Cited by 148 publications

(44 citation statements)

References 39 publications

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“…Both CO60CH40 and CO50CH50 biomixtures had the average ID and CD values as 4.0°CA and 28°CA at the full engine load condition. The effective heat energy of any fuel can be understood by the exhaust gas temperature (EGT) [60]. The higher the EGT, the lower the conversion of energy to useful work [43].…”

Section: Fuel Characterisationmentioning

confidence: 99%

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Combustion Characteristics of Cottonseed Biodiesel and Chicken Fat Biodiesel Mixture in a Multi-Cylinder Compression Ignition Engine

Masera

Hossain

2019

SAE Technical Paper Series

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Although waste animal fats such as chicken fat are promising alternative energy sources, biodiesels produced from these type of feedstocks hardly satisfies the EN14214 biodiesel standards. In this study, biomixtures were prepared by blending cottonseed biodiesel and chicken rendering fat biodiesel which were produced via transesterification method. Biodiesels were blended with each other at 60/40, 50/50 and 30/70 volume ratios to produce CO60CH40, CO50CH50 and CO30CH70 fuels. First, fuel properties of the neat biodiesels and novel biomixtures were measured and compared to European biodiesel standards and diesel. Then, the engine performance, combustion characteristics and exhaust emissions of these novel biomixture fuels were measured in a three-cylinder indirect injection diesel engine under various engine loads and at constant speed of 1500 rpm. The fuel characterisation showed that CO60CH40 and CO50CH50 biomixtures met the European standards. The Brake Specific Energy Consumption (BSEC) and Brake Thermal Efficiency (BTE) of all biomixtures were comparable with CO100, CH100 and diesel at the full engine load. The combustion results revealed that the maximum in-cylinder pressure and energy release values of the CO50CH50 were 4.2% and 4.4% higher than the diesel at full engine load because of optimised fuel properties of biomixture such as molecular structure, viscosity, cetane number and iodine value. CO50CH50 had 2.9% reduced CO2 and comparable CO emission compared to diesel, which were also 5.6% and 13% lower than cottonseed biodiesel respectively. However, NO emission of CO50CH50 was found 3.8% and 5.8% higher than diesel and cottonseed biodiesel. A 6.5% reduction on NO emission was observed when CO60CH40 biomixture fuel was used instead of diesel. To conclude, this research showed that blending of cottonseed and chicken fat biodiesels is a promising approach to meet the EN14214 standards, improve in-cylinder pressure, optimise energy release and reduce exhaust emissions. Blending of different biodiesels will be tested as a future work. Definitions/Abbreviations aTDC After top dead centre BSEC Brake specific energy consumption BS EN 14214 British & European biodiesel standards BSFC Brake specific fuel consumption BTE Brake thermal efficiency CA Crank angle CD Combustion duration CH100 Chicken biodiesel CN Cetane number CO Carbon monoxide CO2 Carbon dioxide CO100 Cottonseed biodiesel CO80CH20 80% cottonseed biodiesel blended with 20% chicken

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Section: Fuel Characterisationmentioning

confidence: 99%

“…The higher the EGT, the lower the conversion of energy to useful work [43]. Moreover, NOx emission and BSFC are likely to increase with the higher EGT [60].…”

Section: Fuel Characterisationmentioning

confidence: 99%

Combustion Characteristics of Cottonseed Biodiesel and Chicken Fat Biodiesel Mixture in a Multi-Cylinder Compression Ignition Engine

Masera

Hossain

2019

SAE Technical Paper Series

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“…Generally, biodiesel fuel properties depend on its raw material [27]. Biodiesel possesses some variations in its physicochemical properties with respect to conventional diesel fuel.…”

Section: Introductionmentioning

confidence: 99%

Alexandrian Laurel for Biodiesel Production and its Biodiesel Blends on Performance, Emission and Combustion Characteristics in Common-Rail Diesel Engine

Teoh

How

et al. 2020

Processes

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A two-step transesterification process was employed in the biodiesel production from non-edible Alexandrian Laurel. The key physicochemical properties of the Alexandrian Laurel biodiesel (ALB), diesel and blends of both fuels were compared and analyzed. The effects of blending biodiesel (ALB) and petroleum diesel on engine performance, combustion and exhaust emissions were investigated in a turbocharged, high-pressure common-rail diesel engine under six different speed operations and at full load conditions. The test fuels comprised a conventional diesel fuel and four different fuel blends of ALB. The results showed relatively close physicochemical properties of ALB and its blends when compared with petroleum diesel. However, the use of ALB-blended fuel resulted in penalties engine brake power, brake specific fuel consumption (BSFC) despite slightly improved brake thermal efficiency (BTE). Brake specific nitrogen oxide (BSNOx) was found worsened with higher ALB content in the blends. Nonetheless, consistent improvements in brake specific carbon monoxide (BSCO), brake specific carbon dioxide (BSCO2), and smoke were noticed when ALB blends were used. Additionally, ALB blends contributed to reduction in peak combustion pressure, peak heat release rate (HRR) and combustion duration. In general, the findings suggest satisfactory operation with ALB biodiesel-diesel blends in an unmodified diesel engine.

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“…They found a slight rise in NOx emissions and a sharp reduction in total HC and smoke opacity emissions. Dhamodaran et al [24] compared biodiesels of rice bran, cottonseed, and neem oils with varying degrees of unsaturation. All of those feedstocks reduced the CO and PM emissions.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on fuel properties and engine characteristics of biodiesel produced from Eruca sativa

2019

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This paper aims to consider the potential of Eruca sativa (ES) crops, which is a plant with a short production cycle and drought tolerance, for biodiesel feedstock source and to compare exhaust emissions and engine performance of using its biodiesel blends with pure diesel. Thus, ES methyl ester was produced through a transesterification reaction by using KOH as a catalyst. The fatty acid composition of ES biodiesel was determined by FTIR and GC-MS analysis and its properties were compared with ASTM biodiesel standard and regular diesel. The GC-MS analysis showed that oleic and palmitic acids were the main compounds in ES methyl ester. Then, biodiesel blends were injected into a single-cylinder 4-stroke diesel engine at various speeds. Experimental tests revealed that using ES methyl ester led to reductions in HC and CO emissions substantially and NOx emissions moderately, whereas there was a minor rise in CO 2 emissions. Moreover, a slight decrease in engine power and an increase in specific fuel consumption (5.3%) occurred, which are acceptable due to the reduction of exhaust emissions. Based on the results, ES biodiesel has the capability to apply in CI engines and to diminish emissions.

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A comparative study of combustion, emission, and performance characteristics of rice-bran-, neem-, and cottonseed-oil biodiesels with varying degree of unsaturation

Cited by 148 publications

References 39 publications

Combustion Characteristics of Cottonseed Biodiesel and Chicken Fat Biodiesel Mixture in a Multi-Cylinder Compression Ignition Engine

Combustion Characteristics of Cottonseed Biodiesel and Chicken Fat Biodiesel Mixture in a Multi-Cylinder Compression Ignition Engine

Alexandrian Laurel for Biodiesel Production and its Biodiesel Blends on Performance, Emission and Combustion Characteristics in Common-Rail Diesel Engine

Experimental investigation on fuel properties and engine characteristics of biodiesel produced from Eruca sativa

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