Combustion Thermodynamics of Ethanol, n-Heptane, and n-Butanol in a Rapid Compression Machine with a Dual Direct Injection (DDI) Supply System
The development of internal combustion engines involves various new solutions, one of which is the use of dual-fuel systems. The diversity of technological solutions being developed determines the efficiency of such systems, as well as the possibility of reducing the emission of carbon dioxide and e...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-05-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/14/9/2729 |
| _version_ | 1797534685205626880 |
|---|---|
| author | Ireneusz Pielecha Sławomir Wierzbicki Maciej Sidorowicz Dariusz Pietras |
| author_facet | Ireneusz Pielecha Sławomir Wierzbicki Maciej Sidorowicz Dariusz Pietras |
| author_sort | Ireneusz Pielecha |
| collection | DOAJ |
| description | The development of internal combustion engines involves various new solutions, one of which is the use of dual-fuel systems. The diversity of technological solutions being developed determines the efficiency of such systems, as well as the possibility of reducing the emission of carbon dioxide and exhaust components into the atmosphere. An innovative double direct injection system was used as a method for forming a mixture in the combustion chamber. The tests were carried out with the use of gasoline, ethanol, n-heptane, and n-butanol during combustion in a model test engine—the rapid compression machine (RCM). The analyzed combustion process indicators included the cylinder pressure, pressure increase rate, heat release rate, and heat release value. Optical tests of the combustion process made it possible to analyze the flame development in the observed area of the combustion chamber. The conducted research and analyses resulted in the observation that it is possible to control the excess air ratio in the direct vicinity of the spark plug just before ignition. Such possibilities occur as a result of the properties of the injected fuels, which include different amounts of air required for their stoichiometric combustion. The studies of the combustion process have shown that the combustible mixtures consisting of gasoline with another fuel are characterized by greater combustion efficiency than the mixtures composed of only a single fuel type, and that the influence of the type of fuel used is significant for the combustion process and its indicator values. |
| first_indexed | 2024-03-10T11:33:56Z |
| format | Article |
| id | doaj.art-a705159412cb46cf84c9686efc2b274c |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T11:33:56Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-a705159412cb46cf84c9686efc2b274c2023-11-21T19:03:33ZengMDPI AGEnergies1996-10732021-05-01149272910.3390/en14092729Combustion Thermodynamics of Ethanol, n-Heptane, and n-Butanol in a Rapid Compression Machine with a Dual Direct Injection (DDI) Supply SystemIreneusz Pielecha0Sławomir Wierzbicki1Maciej Sidorowicz2Dariusz Pietras3Department of Combustion Engines and Transport, Faculty of Civil and Transport Engineering, Poznan University of Technology, pl. M. Sklodowskiej-Curie 5, 60-965 Poznan, PolandDepartment of Mechatronics, Faculty of Technical Sciences, University of Warmia and Mazury in Olsztyn, ul. Oczapowskiego 11, 10-710 Olsztyn, PolandAC S.A., ul. 42 Pulku Piechoty 50, 15-181 Białystok, PolandDepartment of Combustion Engines and Vehicles, Faculty of Mechanical Engineering and Computer Science, University of Bielsko-Biala, ul. Willowa 2, 43-309 Bielsko-Biała, PolandThe development of internal combustion engines involves various new solutions, one of which is the use of dual-fuel systems. The diversity of technological solutions being developed determines the efficiency of such systems, as well as the possibility of reducing the emission of carbon dioxide and exhaust components into the atmosphere. An innovative double direct injection system was used as a method for forming a mixture in the combustion chamber. The tests were carried out with the use of gasoline, ethanol, n-heptane, and n-butanol during combustion in a model test engine—the rapid compression machine (RCM). The analyzed combustion process indicators included the cylinder pressure, pressure increase rate, heat release rate, and heat release value. Optical tests of the combustion process made it possible to analyze the flame development in the observed area of the combustion chamber. The conducted research and analyses resulted in the observation that it is possible to control the excess air ratio in the direct vicinity of the spark plug just before ignition. Such possibilities occur as a result of the properties of the injected fuels, which include different amounts of air required for their stoichiometric combustion. The studies of the combustion process have shown that the combustible mixtures consisting of gasoline with another fuel are characterized by greater combustion efficiency than the mixtures composed of only a single fuel type, and that the influence of the type of fuel used is significant for the combustion process and its indicator values.https://www.mdpi.com/1996-1073/14/9/2729combustion enginesdual direct injectionalternative fuelscombustionheat release |
| spellingShingle | Ireneusz Pielecha Sławomir Wierzbicki Maciej Sidorowicz Dariusz Pietras Combustion Thermodynamics of Ethanol, n-Heptane, and n-Butanol in a Rapid Compression Machine with a Dual Direct Injection (DDI) Supply System Energies combustion engines dual direct injection alternative fuels combustion heat release |
| title | Combustion Thermodynamics of Ethanol, n-Heptane, and n-Butanol in a Rapid Compression Machine with a Dual Direct Injection (DDI) Supply System |
| title_full | Combustion Thermodynamics of Ethanol, n-Heptane, and n-Butanol in a Rapid Compression Machine with a Dual Direct Injection (DDI) Supply System |
| title_fullStr | Combustion Thermodynamics of Ethanol, n-Heptane, and n-Butanol in a Rapid Compression Machine with a Dual Direct Injection (DDI) Supply System |
| title_full_unstemmed | Combustion Thermodynamics of Ethanol, n-Heptane, and n-Butanol in a Rapid Compression Machine with a Dual Direct Injection (DDI) Supply System |
| title_short | Combustion Thermodynamics of Ethanol, n-Heptane, and n-Butanol in a Rapid Compression Machine with a Dual Direct Injection (DDI) Supply System |
| title_sort | combustion thermodynamics of ethanol n heptane and n butanol in a rapid compression machine with a dual direct injection ddi supply system |
| topic | combustion engines dual direct injection alternative fuels combustion heat release |
| url | https://www.mdpi.com/1996-1073/14/9/2729 |
| work_keys_str_mv | AT ireneuszpielecha combustionthermodynamicsofethanolnheptaneandnbutanolinarapidcompressionmachinewithadualdirectinjectionddisupplysystem AT sławomirwierzbicki combustionthermodynamicsofethanolnheptaneandnbutanolinarapidcompressionmachinewithadualdirectinjectionddisupplysystem AT maciejsidorowicz combustionthermodynamicsofethanolnheptaneandnbutanolinarapidcompressionmachinewithadualdirectinjectionddisupplysystem AT dariuszpietras combustionthermodynamicsofethanolnheptaneandnbutanolinarapidcompressionmachinewithadualdirectinjectionddisupplysystem |