The impact of different compression ratios on emissions, and combustion characteristics of a biodiesel engine
The current work investigated the combustion efficiency of biodiesel engines under diverse ratios of compression (15.5, 16.5, 17.5, and 18.5) and different biodiesel fuels produced from apricot oil, papaya oil, sunflower oil, and tomato seed oil. The combustion process of the biodiesel fuel inside t...
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AIMS Press
2024-08-01
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| Series: | AIMS Energy |
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| Online Access: | https://www.aimspress.com/article/doi/10.3934/energy.2024043 |
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| author | Hussein A. Mahmood Ali O. Al-Sulttani Hayder A. Alrazen Osam H. Attia |
| author_facet | Hussein A. Mahmood Ali O. Al-Sulttani Hayder A. Alrazen Osam H. Attia |
| author_sort | Hussein A. Mahmood |
| collection | DOAJ |
| description | The current work investigated the combustion efficiency of biodiesel engines under diverse ratios of compression (15.5, 16.5, 17.5, and 18.5) and different biodiesel fuels produced from apricot oil, papaya oil, sunflower oil, and tomato seed oil. The combustion process of the biodiesel fuel inside the engine was simulated utilizing ANSYS Fluent v16 (CFD). On AV1 diesel engines (Kirloskar), numerical simulations were conducted at 1500 rpm. The outcomes of the simulation demonstrated that increasing the compression ratio (CR) led to increased peak temperature and pressures in the combustion chamber, as well as elevated levels of CO2 and NO mass fractions and decreased CO emission values under the same biodiesel fuel type. Additionally, the findings revealed that the highest cylinder temperature was 1007.32 K and the highest cylinder pressure was 7.3 MPa, achieved by biodiesel derived from apricot oil at an 18.5% compression ratio. Meanwhile, the highest NO and CO2 mass fraction values were 0.000257524 and 0.040167679, respectively, obtained from biodiesel derived from papaya oil at an 18.5% compression ratio. This study explained that the apricot oil biodiesel engine had the highest combustion efficiency with high emissions at a compression ratio of 18:5. On the other hand, tomato seed oil biodiesel engines had low combustion performance and low emissions of NO and CO2 at a compression ratio of 15:5. The current study concluded that apricot oil biodiesel may be a suitable alternative to diesel fuel operated at a CR of 18:1. |
| format | Article |
| id | doaj-art-fb27824e0f0e4860b7d1342034dca964 |
| institution | Kabale University |
| issn | 2333-8334 |
| language | English |
| publishDate | 2024-08-01 |
| publisher | AIMS Press |
| record_format | Article |
| series | AIMS Energy |
| spelling | doaj-art-fb27824e0f0e4860b7d1342034dca9642025-01-24T01:35:01ZengAIMS PressAIMS Energy2333-83342024-08-0112592494510.3934/energy.2024043The impact of different compression ratios on emissions, and combustion characteristics of a biodiesel engineHussein A. Mahmood0Ali O. Al-Sulttani1Hayder A. Alrazen2Osam H. Attia3Department of Reconstruction and Projects, University of Baghdad, Baghdad, IraqDepartment of Water Resources Engineering, College of Engineering, University of Baghdad, Baghdad, IraqSchool of Mechanical and Mining Engineering, University of Queensland, QLD, 4072, AustraliaDepartment of Reconstruction and Projects, University of Baghdad, Baghdad, IraqThe current work investigated the combustion efficiency of biodiesel engines under diverse ratios of compression (15.5, 16.5, 17.5, and 18.5) and different biodiesel fuels produced from apricot oil, papaya oil, sunflower oil, and tomato seed oil. The combustion process of the biodiesel fuel inside the engine was simulated utilizing ANSYS Fluent v16 (CFD). On AV1 diesel engines (Kirloskar), numerical simulations were conducted at 1500 rpm. The outcomes of the simulation demonstrated that increasing the compression ratio (CR) led to increased peak temperature and pressures in the combustion chamber, as well as elevated levels of CO2 and NO mass fractions and decreased CO emission values under the same biodiesel fuel type. Additionally, the findings revealed that the highest cylinder temperature was 1007.32 K and the highest cylinder pressure was 7.3 MPa, achieved by biodiesel derived from apricot oil at an 18.5% compression ratio. Meanwhile, the highest NO and CO2 mass fraction values were 0.000257524 and 0.040167679, respectively, obtained from biodiesel derived from papaya oil at an 18.5% compression ratio. This study explained that the apricot oil biodiesel engine had the highest combustion efficiency with high emissions at a compression ratio of 18:5. On the other hand, tomato seed oil biodiesel engines had low combustion performance and low emissions of NO and CO2 at a compression ratio of 15:5. The current study concluded that apricot oil biodiesel may be a suitable alternative to diesel fuel operated at a CR of 18:1.https://www.aimspress.com/article/doi/10.3934/energy.2024043biodieselcfddiesel enginecompression ratio |
| spellingShingle | Hussein A. Mahmood Ali O. Al-Sulttani Hayder A. Alrazen Osam H. Attia The impact of different compression ratios on emissions, and combustion characteristics of a biodiesel engine AIMS Energy biodiesel cfd diesel engine compression ratio |
| title | The impact of different compression ratios on emissions, and combustion characteristics of a biodiesel engine |
| title_full | The impact of different compression ratios on emissions, and combustion characteristics of a biodiesel engine |
| title_fullStr | The impact of different compression ratios on emissions, and combustion characteristics of a biodiesel engine |
| title_full_unstemmed | The impact of different compression ratios on emissions, and combustion characteristics of a biodiesel engine |
| title_short | The impact of different compression ratios on emissions, and combustion characteristics of a biodiesel engine |
| title_sort | impact of different compression ratios on emissions and combustion characteristics of a biodiesel engine |
| topic | biodiesel cfd diesel engine compression ratio |
| url | https://www.aimspress.com/article/doi/10.3934/energy.2024043 |
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