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Impact of Combined Effects of Injection Pressure and EGR on Modified Stationary Engine Fuelled with Biodiesel Blend Made of Waste Feedstock Oils

  • Research Article-Mechanical Engineering
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Abstract

The aim of this present work was to investigate the combined effects of injection pressure and exhaust gas recirculation (EGR) on the combustion, performance and emission characteristics in a modified stationary diesel engine. Biodiesel blend (BDB) method also has been approached in this present work to improve the fuel properties by mixing two feedstock of different saturated fatty acid composition. Biodiesel blend was prepared from waste feedstock oils of waste cooking oil and chicken fat oil. A new method of raw bio-oil mixing has been carried out for BDB production and reduced the production cost. The engine was tested with three injection pressures (300, 400 and 500 bar) and two different EGR rates (10% and 20%) at full load, and experimental results were compared with biodiesel conventional combustion (BDC) mode. The outcomes showed that the amount of oxygen presents in biodiesel blend is not enough to support the combustion at high EGR rate of 20%. High injection pressure of 500 bar with the minimum amount of 10% EGR operating condition, named as P500E10, offered the high brake thermal efficiency of 34.93%, which is 11.56% higher than BDC. Nitric oxide emissions, the major constrain for biodiesel usage in engine applications, also reduced at P500E10 by 2.56% as compared to BDC. The overall experimental results showed that the BDB prepared with waste feedstocks would be an impressive alternative resource for engine applications along with suitable injection pressure and EGR rate.

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Abbreviations

BDB:

Biodiesel blend

BDC:

Biodiesel conventional combustion

BSFC:

Brake-specific fuel consumption

BTE:

Brake thermal efficiency

CFO:

Chicken fat oil

CFB:

Chicken fat oil biodiesel

CD:

Combustion duration

CN:

Cetane number

EGR:

Exhaust gas recirculation

ID:

Ignition delay

RBOB:

Raw bio-oil blend

SFA:

Saturated fatty acid

USFA:

Unsaturated fatty acid

WCO:

Waste cooking oil

WCOB:

Waste cooking oil biodiesel

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Acknowledgements

The authors wish to express their heartfelt thanks to Head of Department, Mechanical engineering, Kings College of Engineering, Pudukkottai, Affiliated to Anna University, Chennai, for their support to complete this research.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Kings College of Engineering, Punalkulam, Pudukkottai, Affiliated to Anna University, Chennai, Tamilnadu, 600025, India

    M. Anto Alosius & Pushparaj Thomai

  2. Internal Combustion Engineering Division, Department of Mechanical Engineering, College of Engineering Guindy, Anna University, Chennai, Tamilnadu, 600025, India

    Justin Jacob Thomas

  3. Department of Mechanical Engineering and Design, Aston University, Birmingham, B47ET, UK

    Vikas Sharma

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MAA performed conceptualization, methodology, investigation, writing—original draft. PT was involved in writing—review & editing and supervision. JJT done methodology, investigation, writing—review & editing. VS performed formal analysis and visualization and provided resources.

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Alosius, M.A., Thomai, P., Thomas, J.J. et al. Impact of Combined Effects of Injection Pressure and EGR on Modified Stationary Engine Fuelled with Biodiesel Blend Made of Waste Feedstock Oils. Arab J Sci Eng 48, 12389–12405 (2023). https://doi.org/10.1007/s13369-023-07795-9

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