Cycle-to-Cycle Variation of the Combustion Process in a Diesel Engine Fueled with Rapeseed Oil—Diethyl Ether Blends
The application of rapeseed oil (RO) blends with diesel fuel and/or alcohols and/or ethers is known to significantly affect the combustion process. Aiming to further investigate the effects of rapeseed oil in a blend with diethyl ether (DEE) on this process, the coefficient of variation of the mean...
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| Format: | Article |
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MDPI AG
2023-01-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/2/720 |
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| author | Krzysztof Górski Ruslans Smigins Jonas Matijošius Dimitrios Tziourtzioumis |
| author_facet | Krzysztof Górski Ruslans Smigins Jonas Matijošius Dimitrios Tziourtzioumis |
| author_sort | Krzysztof Górski |
| collection | DOAJ |
| description | The application of rapeseed oil (RO) blends with diesel fuel and/or alcohols and/or ethers is known to significantly affect the combustion process. Aiming to further investigate the effects of rapeseed oil in a blend with diethyl ether (DEE) on this process, the coefficient of variation of the mean indicated pressure (<i>COV<sub>MIP</sub></i>) of a 2.5l direct injection diesel engine was calculated. The analysis of the experimental results revealed the repeatability of the combustion process variability of diesel fuel (DF), rapeseed oil (RO), and DEE/RO blends containing up to 20% DEE. In these cases, the <i>COV<sub>MIP</sub></i> does not exceed 4%. Additionally, it became obvious that for a higher content of DEE in blend with RO, the cyclic repeatability of the mean indicated pressure (<i>MIP</i>) was reduced. Thus, the values of <i>COV<sub>MIP</sub></i> for fuels containing 30 and 40% of DEE by vol. in blend with RO were even three times higher than the values obtained for the reference fuel i.e., DF. The results indicate that the increased content of DEE in the mixture with RO is disadvantageous as it leads to excessive unevenness of the engine operation compared to its fueling with DF. The observed deterioration of the combustion process is caused by the vapor locks, which are formed due to the evaporation of volatile DEE in the fuel line, leading to the interrupted operation of the fuel injector. |
| first_indexed | 2024-03-09T12:52:41Z |
| format | Article |
| id | doaj.art-34b51e469a164198a0a390db21032599 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T12:52:41Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-34b51e469a164198a0a390db210325992023-11-30T22:03:05ZengMDPI AGEnergies1996-10732023-01-0116272010.3390/en16020720Cycle-to-Cycle Variation of the Combustion Process in a Diesel Engine Fueled with Rapeseed Oil—Diethyl Ether BlendsKrzysztof Górski0Ruslans Smigins1Jonas Matijošius2Dimitrios Tziourtzioumis3Faculty of Mechanical Engineering, Kazimierz Pulaski University of Technology and Humanities in Radom, ul. Chrobrego 45, 26-600 Radom, PolandFaculty of Engineering, Latvia University of Life Sciences and Technologies, J. Cakstes Blvd 5, LV3001 Jelgava, LatviaDepartment of Automobile Engineering, Faculty of Transport Engineering, Vilnius Gediminas Technical University, J. Basanavičiaus Str. 28, LT-03224 Vilnius, LithuaniaDepartment of Industrial Engineering and Management, International Hellenic University, 14th km Thessaloniki, 570 01 Nea Moudania, GreeceThe application of rapeseed oil (RO) blends with diesel fuel and/or alcohols and/or ethers is known to significantly affect the combustion process. Aiming to further investigate the effects of rapeseed oil in a blend with diethyl ether (DEE) on this process, the coefficient of variation of the mean indicated pressure (<i>COV<sub>MIP</sub></i>) of a 2.5l direct injection diesel engine was calculated. The analysis of the experimental results revealed the repeatability of the combustion process variability of diesel fuel (DF), rapeseed oil (RO), and DEE/RO blends containing up to 20% DEE. In these cases, the <i>COV<sub>MIP</sub></i> does not exceed 4%. Additionally, it became obvious that for a higher content of DEE in blend with RO, the cyclic repeatability of the mean indicated pressure (<i>MIP</i>) was reduced. Thus, the values of <i>COV<sub>MIP</sub></i> for fuels containing 30 and 40% of DEE by vol. in blend with RO were even three times higher than the values obtained for the reference fuel i.e., DF. The results indicate that the increased content of DEE in the mixture with RO is disadvantageous as it leads to excessive unevenness of the engine operation compared to its fueling with DF. The observed deterioration of the combustion process is caused by the vapor locks, which are formed due to the evaporation of volatile DEE in the fuel line, leading to the interrupted operation of the fuel injector.https://www.mdpi.com/1996-1073/16/2/720rapeseed oildiesel fueldiethyl ethercombustion processrenewable fuels |
| spellingShingle | Krzysztof Górski Ruslans Smigins Jonas Matijošius Dimitrios Tziourtzioumis Cycle-to-Cycle Variation of the Combustion Process in a Diesel Engine Fueled with Rapeseed Oil—Diethyl Ether Blends Energies rapeseed oil diesel fuel diethyl ether combustion process renewable fuels |
| title | Cycle-to-Cycle Variation of the Combustion Process in a Diesel Engine Fueled with Rapeseed Oil—Diethyl Ether Blends |
| title_full | Cycle-to-Cycle Variation of the Combustion Process in a Diesel Engine Fueled with Rapeseed Oil—Diethyl Ether Blends |
| title_fullStr | Cycle-to-Cycle Variation of the Combustion Process in a Diesel Engine Fueled with Rapeseed Oil—Diethyl Ether Blends |
| title_full_unstemmed | Cycle-to-Cycle Variation of the Combustion Process in a Diesel Engine Fueled with Rapeseed Oil—Diethyl Ether Blends |
| title_short | Cycle-to-Cycle Variation of the Combustion Process in a Diesel Engine Fueled with Rapeseed Oil—Diethyl Ether Blends |
| title_sort | cycle to cycle variation of the combustion process in a diesel engine fueled with rapeseed oil diethyl ether blends |
| topic | rapeseed oil diesel fuel diethyl ether combustion process renewable fuels |
| url | https://www.mdpi.com/1996-1073/16/2/720 |
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