Optimization of hydrogen induced combustion and thermal characteristics in simarouba methyl ester-diesel blends for enhanced HCCI engine performance

Optimization of hydrogen induced combustion and thermal characteristics in simarouba methyl ester-diesel blends for enhanced HCCI engine performance

This investigation examines how a Homogeneous Charge Compression Ignition (HCCI) engine on combustion, performance, and emissions are influenced by a number of input parameters, including as Diesel/Biodiesel blend ratios, load, Hydrogen-Induced Flow Rate and injection timing (premixed low-temperatur...

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Bibliographic Details
Main Authors: M. Prabhahar, S. Prakash, Haiter Lenin Allasi, Edwin Geo Varuvel, Anand Kumar Ram, Sujeet Kumar
Format: Article
Language:English
Published: Elsevier 2025-09-01
Series:Case Studies in Thermal Engineering
Subjects:
Hydrogen-induced flow rate
Injection timing
Simarouba methyl ester
Performance
Environment
Online Access:http://www.sciencedirect.com/science/article/pii/S2214157X25008585
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Summary:This investigation examines how a Homogeneous Charge Compression Ignition (HCCI) engine on combustion, performance, and emissions are influenced by a number of input parameters, including as Diesel/Biodiesel blend ratios, load, Hydrogen-Induced Flow Rate and injection timing (premixed low-temperature combustion mode with early direct injection). The results, which were obtained using Response Surface Methodology (RSM), show that the best combinations of these factors significantly enhance combustion efficiency and lower emissions. A 20 % Diesel/Fuel blend, 15 kgf load, 3 lpm HIFR, and 18°BTDC injection timing results in a peak combustion pressure of 61.55 bar, while a 20 % blend, 12 kgf load, 0 lpm HIFR, and 22°BTDC produces the maximum heat release rate (HRR) of 68.33 J/deg. Similar conditions give the highest Brake Thermal Efficiency (BTE) of 30.92 %, while 20 % blend, 9 kgf load, 10 lpm HIFR, and 22°BTDC, the lowest Brake Specific Fuel Consumption (BSFC) of 0.342 kg/kWh. Additionally, emissions were optimized: CO by 0.112 %, HC by 44 ppm, NOx by 534 ppm and smoke decreased by 17 %. These results highlight how crucial it is to make exact parameter changes in order to maximize engine performance and reduce environmental effect.
ISSN:2214-157X

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