Numerical prediction of research octane numbers via a quasi-dimensional two-zone cylinder model
Sustainably produced synthetic fuels offer great potential for a fast reduction of the greenhouse gas emissions of the transport sector. For an immediate application within the existing infrastructure and vehicle fleet, synthetic fuels need to comply with existing standards such as the EN 228 for ga...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-09-01
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| Series: | Applications in Energy and Combustion Science |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666352X2200022X |
| _version_ | 1811275324319596544 |
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| author | Samuel Schlichting Torsten Methling Patrick Oßwald Julia Zinsmeister Uwe Riedel Markus Köhler |
| author_facet | Samuel Schlichting Torsten Methling Patrick Oßwald Julia Zinsmeister Uwe Riedel Markus Köhler |
| author_sort | Samuel Schlichting |
| collection | DOAJ |
| description | Sustainably produced synthetic fuels offer great potential for a fast reduction of the greenhouse gas emissions of the transport sector. For an immediate application within the existing infrastructure and vehicle fleet, synthetic fuels need to comply with existing standards such as the EN 228 for gasoline. Beyond these standards and with optimized fuel design, certain properties can be improved compared to conventional fuels. For this purpose, methods for evaluating the properties are needed.This work discusses the development of a simplified numerical quasi-dimensional two-zone cylinder model, combined with chemical kinetic models, for the estimation of octane numbers. The model emulates fuel specific operating conditions of the standardized procedure for the determination of octane numbers in the cooperative fuel research engine with variable compression ratios. The two zones represent the burned and unburned in-cylinder volume and are modeled with homogeneous reactors. The octane numbers are determined by the identification of the critical compression ratio, for which premature ignition occurs in the unburned reactor.A two-zone cylinder model is validated against experimental data for various primary reference fuels, blended with toluene, ethanol, isobutanol and ethyl tert-butyl ether. The successful application of different kinetic models is demonstrated and enables the application on a wide range of fuels. It is shown that the simulated research octane numbers are in good agreement with the experimental data. |
| first_indexed | 2024-04-12T23:36:40Z |
| format | Article |
| id | doaj.art-43816b36d4e5416e892554af6cc1913d |
| institution | Directory Open Access Journal |
| issn | 2666-352X |
| language | English |
| last_indexed | 2024-04-12T23:36:40Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Applications in Energy and Combustion Science |
| spelling | doaj.art-43816b36d4e5416e892554af6cc1913d2022-12-22T03:12:07ZengElsevierApplications in Energy and Combustion Science2666-352X2022-09-0111100079Numerical prediction of research octane numbers via a quasi-dimensional two-zone cylinder modelSamuel Schlichting0Torsten Methling1Patrick Oßwald2Julia Zinsmeister3Uwe Riedel4Markus Köhler5Institute of Combustion Technology, German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, Germany; Correspondence to: German Aerospace Center, Pfaffenwaldring 38-40, 70569 Stuttgart, Germany.Institute of Combustion Technology, German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, GermanyInstitute of Combustion Technology, German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, GermanyInstitute of Combustion Technology, German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, GermanyInstitute of Low-Carbon Industrial Processes, German Aerospace Center (DLR), Walther-Pauer-Straße 5, 03046 Cottbus, GermanyInstitute of Combustion Technology, German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, GermanySustainably produced synthetic fuels offer great potential for a fast reduction of the greenhouse gas emissions of the transport sector. For an immediate application within the existing infrastructure and vehicle fleet, synthetic fuels need to comply with existing standards such as the EN 228 for gasoline. Beyond these standards and with optimized fuel design, certain properties can be improved compared to conventional fuels. For this purpose, methods for evaluating the properties are needed.This work discusses the development of a simplified numerical quasi-dimensional two-zone cylinder model, combined with chemical kinetic models, for the estimation of octane numbers. The model emulates fuel specific operating conditions of the standardized procedure for the determination of octane numbers in the cooperative fuel research engine with variable compression ratios. The two zones represent the burned and unburned in-cylinder volume and are modeled with homogeneous reactors. The octane numbers are determined by the identification of the critical compression ratio, for which premature ignition occurs in the unburned reactor.A two-zone cylinder model is validated against experimental data for various primary reference fuels, blended with toluene, ethanol, isobutanol and ethyl tert-butyl ether. The successful application of different kinetic models is demonstrated and enables the application on a wide range of fuels. It is shown that the simulated research octane numbers are in good agreement with the experimental data.http://www.sciencedirect.com/science/article/pii/S2666352X2200022XOctane numberTwo-zone cylinder modelReactor networkSynthetic fuels |
| spellingShingle | Samuel Schlichting Torsten Methling Patrick Oßwald Julia Zinsmeister Uwe Riedel Markus Köhler Numerical prediction of research octane numbers via a quasi-dimensional two-zone cylinder model Applications in Energy and Combustion Science Octane number Two-zone cylinder model Reactor network Synthetic fuels |
| title | Numerical prediction of research octane numbers via a quasi-dimensional two-zone cylinder model |
| title_full | Numerical prediction of research octane numbers via a quasi-dimensional two-zone cylinder model |
| title_fullStr | Numerical prediction of research octane numbers via a quasi-dimensional two-zone cylinder model |
| title_full_unstemmed | Numerical prediction of research octane numbers via a quasi-dimensional two-zone cylinder model |
| title_short | Numerical prediction of research octane numbers via a quasi-dimensional two-zone cylinder model |
| title_sort | numerical prediction of research octane numbers via a quasi dimensional two zone cylinder model |
| topic | Octane number Two-zone cylinder model Reactor network Synthetic fuels |
| url | http://www.sciencedirect.com/science/article/pii/S2666352X2200022X |
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