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Performance and emissions characteristics of a common rail direct injection diesel engine powered by ignition enhancer-biodiesel blends

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Abstract

Bioenergy and exploitation from waste offer an appealing alternate method for minimizing the severity of environmental risks while compensating for fossil fuel needs. In detail, this research examined the process of transesterifying waste seed oil obtained from the Kabra plant to fuel a common rail direct injection diesel engine. The oxygenated additive dimethyl carbonate was used as an ignition enhancer. The experiments were performed by blending dimethyl carbonate (up to 20%) in the biodiesel blend to analyze the engine outcome parameters in standard operational procedures. The experiment results revealed that the maximum cylinder pressure in pure biodiesel was 1.73% greater than diesel. More dimethyl carbonate in the biodiesel blend produced a 20.54% higher heat release rate than diesel. The brake thermal brake efficiency improved by 17.75% in dimethyl carbonate 20% blend than pure biodiesel at a higher load. The higher proportion of dimethyl carbonate blend increased 4.2% oxides of nitrogen (NOx) emissions. It decreased 31.5% smoke opacity, 36.36% hydrocarbon (HC) emissions, and 35.6% carbon monoxide (CO) emissions than diesel at maximum load. This research concluded that the smoke opacity, CO emissions, and HC emissions persisted lower for all the test fuels than baseline diesel fuel, with a slight rise in NOx emissions. Further, the TOPSIS optimization technique found that the dimethyl carbonate 20% blend is suitable for diesel engine operation. Hence, the fuel generated from Kabra biodiesel was a feasible diesel substitute in this investigation.

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Abbreviations

ASTM:

American society for testing of materials

B100:

Biodiesel

B50:

Diesel 50% + Biodiesel 50% by volume

B50 + DMC10:

90% By volume biodiesel blend + 10% by volume dimethyl carbonate

B50 + DMC15:

85% By volume biodiesel blend + 15% by volume dimethyl carbonate

B50 + DMC20:

80% By volume biodiesel blend + 20% by volume dimethyl carbonate

bTDC:

Before Top Dead Centre

BP:

Brake Power

BSEC:

Brake specific energy consumption

BTE:

Brake thermal efficiency

CO:

Carbon monoxide emissions

CRDI:

Common rail direct injection

CA:

Crank angle

ECU:

Electronic control unit

FTIR:

Fourier transform infrared

FFA:

Free fatty acid

HRR:

Heat release rate

HC:

Hydrocarbon

MGT:

Mean gas temperature

NOx:

Oxides of nitrogen

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Acknowledgement

No specific grant for this research was provided by funding organizations in the public, private, or nonprofit sectors.

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Authors

Contributions

SS was involved in the investigation and supervision. RJ contributed to the project administration and resource. PD assisted in the methodology, interpretation, and extracted fuel, conducted the experiments, and wrote the manuscript.

Corresponding author

Correspondence to P. Duraisamy.

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There are no conflicts of interest or competing to declare.

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Editorial responsibility: Rui Zhao.

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Duraisamy, P., Subramani, S. & Jayabal, R. Performance and emissions characteristics of a common rail direct injection diesel engine powered by ignition enhancer-biodiesel blends. Int. J. Environ. Sci. Technol. 20, 12251–12266 (2023). https://doi.org/10.1007/s13762-023-04891-z

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  • DOI: https://doi.org/10.1007/s13762-023-04891-z

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