LAPSE:2023.32184
Published Article
LAPSE:2023.32184
Combustion Thermodynamics of Ethanol, n-Heptane, and n-Butanol in a Rapid Compression Machine with a Dual Direct Injection (DDI) Supply System
April 19, 2023
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.
Keywords
Alternative Fuels, combustion, combustion engines, dual direct injection, heat release
Suggested Citation
Pielecha I, Wierzbicki S, Sidorowicz M, Pietras D. Combustion Thermodynamics of Ethanol, n-Heptane, and n-Butanol in a Rapid Compression Machine with a Dual Direct Injection (DDI) Supply System. (2023). LAPSE:2023.32184
Author Affiliations
Pielecha I: Department of Combustion Engines and Transport, Faculty of Civil and Transport Engineering, Poznan University of Technology, pl. M. Sklodowskiej-Curie 5, 60-965 Poznan, Poland [ORCID]
Wierzbicki S: Department of Mechatronics, Faculty of Technical Sciences, University of Warmia and Mazury in Olsztyn, ul. Oczapowskiego 11, 10-710 Olsztyn, Poland [ORCID]
Sidorowicz M: AC S.A., ul. 42 Pulku Piechoty 50, 15-181 Białystok, Poland [ORCID]
Pietras D: Department of Combustion Engines and Vehicles, Faculty of Mechanical Engineering and Computer Science, University of Bielsko-Biala, ul. Willowa 2, 43-309 Bielsko-Biała, Poland [ORCID]
Journal Name
Energies
Volume
14
Issue
9
First Page
2729
Year
2021
Publication Date
2021-05-10
Published Version
ISSN
1996-1073
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Original Submission
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PII: en14092729, Publication Type: Journal Article
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LAPSE:2023.32184
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doi:10.3390/en14092729
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Apr 19, 2023
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