Multi‐objective optimization of injection timing, pressure, and alcohol share in CRDI engines and comparative analysis of ethanol and isoamyl alcohol blends using the Taguchi GRA method.
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| Title: | Multi‐objective optimization of injection timing, pressure, and alcohol share in CRDI engines and comparative analysis of ethanol and isoamyl alcohol blends using the Taguchi GRA method. |
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| Authors: | Yadav, G. Praveen Kumar1,2 (AUTHOR) praveenkumaryadav.me@gprec.ac.in, Muvvala, Pullarao1 (AUTHOR), Reddy, R. Meenakshi2 (AUTHOR) |
| Source: | Environmental Progress & Sustainable Energy. Mar/Apr2026, Vol. 45 Issue 2, p1-17. 17p. |
| Subjects: | Ethanol as fuel, Alcohols (Chemical class), Multi-objective optimization, Internal combustion engines |
| Abstract: | This study presents a comparative optimization of ethanol and isoamyl alcohol as oxygenated additives in cottonseed biodiesel‐diesel (B20) blends for a common‐rail direct injection (CRDI) engine. An integrated Taguchi‐Gray Relational Analysis (GRA) approach was employed to optimize three key parameters—injection timing (IT), injection pressure (IP), and alcohol share—to enhance performance and minimize emissions. The results demonstrate that an injection timing of 27°CA bTDC was optimal for minimizing emissions with both alcohols. The optimum combination for ethanol blends was a 15% share at 200 bar IP, whereas for isoamyl alcohol, a 25% share at 240 bar IP yielded the best results. Analysis of variance (ANOVA) revealed that injection timing was the most influential parameter for controlling CO, HC, and smoke emissions in ethanol blends, while the ethanol proportion significantly affected brake thermal efficiency (BTE) and brake‐specific fuel consumption (BSFC). For isoamyl alcohol blends, injection pressure was the dominant factor for BTE, and the alcohol share had the greatest impact on BSFC and NOx. The study concludes that ethanol is more effective for emission reduction, while isoamyl alcohol offers superior combustion efficiency. This work provides a novel dual‐alcohol comparison under identical CRDI conditions, offering valuable insights for implementing sustainable biodiesel‐alcohol blends. [ABSTRACT FROM AUTHOR] |
| Copyright of Environmental Progress & Sustainable Energy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 192556166 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Multi‐objective optimization of injection timing, pressure, and alcohol share in CRDI engines and comparative analysis of ethanol and isoamyl alcohol blends using the Taguchi GRA method. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Yadav%2C+G%2E+Praveen+Kumar%22">Yadav, G. Praveen Kumar</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> praveenkumaryadav.me@gprec.ac.in</i><br /><searchLink fieldCode="AR" term="%22Muvvala%2C+Pullarao%22">Muvvala, Pullarao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Reddy%2C+R%2E+Meenakshi%22">Reddy, R. Meenakshi</searchLink><relatesTo>2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Environmental+Progress+%26+Sustainable+Energy%22">Environmental Progress & Sustainable Energy</searchLink>. Mar/Apr2026, Vol. 45 Issue 2, p1-17. 17p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Ethanol+as+fuel%22">Ethanol as fuel</searchLink><br /><searchLink fieldCode="DE" term="%22Alcohols+%28Chemical+class%29%22">Alcohols (Chemical class)</searchLink><br /><searchLink fieldCode="DE" term="%22Multi-objective+optimization%22">Multi-objective optimization</searchLink><br /><searchLink fieldCode="DE" term="%22Internal+combustion+engines%22">Internal combustion engines</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This study presents a comparative optimization of ethanol and isoamyl alcohol as oxygenated additives in cottonseed biodiesel‐diesel (B20) blends for a common‐rail direct injection (CRDI) engine. An integrated Taguchi‐Gray Relational Analysis (GRA) approach was employed to optimize three key parameters—injection timing (IT), injection pressure (IP), and alcohol share—to enhance performance and minimize emissions. The results demonstrate that an injection timing of 27°CA bTDC was optimal for minimizing emissions with both alcohols. The optimum combination for ethanol blends was a 15% share at 200 bar IP, whereas for isoamyl alcohol, a 25% share at 240 bar IP yielded the best results. Analysis of variance (ANOVA) revealed that injection timing was the most influential parameter for controlling CO, HC, and smoke emissions in ethanol blends, while the ethanol proportion significantly affected brake thermal efficiency (BTE) and brake‐specific fuel consumption (BSFC). For isoamyl alcohol blends, injection pressure was the dominant factor for BTE, and the alcohol share had the greatest impact on BSFC and NOx. The study concludes that ethanol is more effective for emission reduction, while isoamyl alcohol offers superior combustion efficiency. This work provides a novel dual‐alcohol comparison under identical CRDI conditions, offering valuable insights for implementing sustainable biodiesel‐alcohol blends. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Environmental Progress & Sustainable Energy is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/ep.70272 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 17 StartPage: 1 Subjects: – SubjectFull: Ethanol as fuel Type: general – SubjectFull: Alcohols (Chemical class) Type: general – SubjectFull: Multi-objective optimization Type: general – SubjectFull: Internal combustion engines Type: general Titles: – TitleFull: Multi‐objective optimization of injection timing, pressure, and alcohol share in CRDI engines and comparative analysis of ethanol and isoamyl alcohol blends using the Taguchi GRA method. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Yadav, G. Praveen Kumar – PersonEntity: Name: NameFull: Muvvala, Pullarao – PersonEntity: Name: NameFull: Reddy, R. Meenakshi IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar/Apr2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 19447442 Numbering: – Type: volume Value: 45 – Type: issue Value: 2 Titles: – TitleFull: Environmental Progress & Sustainable Energy Type: main |
| ResultId | 1 |
