A Numerical Study on the Combustion Process and Emission Characteristics of a Natural Gas-Diesel Dual-Fuel Marine Engine at Full Load
This paper presents research on the combustion and emission characteristics of a four-stroke Natural gas–Diesel dual-fuel marine engine at full load. The AVL FIRE R2018a (AVL List GmbH, Graz, Austria) simulation software was used to conduct three-dimensional simulations of the combustion process and...
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2021-03-01
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| Online Access: | https://www.mdpi.com/1996-1073/14/5/1342 |
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| author | Van Chien Pham Jae-Hyuk Choi Beom-Seok Rho Jun-Soo Kim Kyunam Park Sang-Kyun Park Van Vang Le Won-Ju Lee |
| author_facet | Van Chien Pham Jae-Hyuk Choi Beom-Seok Rho Jun-Soo Kim Kyunam Park Sang-Kyun Park Van Vang Le Won-Ju Lee |
| author_sort | Van Chien Pham |
| collection | DOAJ |
| description | This paper presents research on the combustion and emission characteristics of a four-stroke Natural gas–Diesel dual-fuel marine engine at full load. The AVL FIRE R2018a (AVL List GmbH, Graz, Austria) simulation software was used to conduct three-dimensional simulations of the combustion process and emission formations inside the engine cylinder in both diesel and dual-fuel mode to analyze the in-cylinder pressure, temperature, and emission characteristics. The simulation results were then compared and showed a good agreement with the measured values reported in the engine’s shop test technical data. The simulation results showed reductions in the in-cylinder pressure and temperature peaks by 1.7% and 6.75%, while NO, soot, CO, and CO<sub>2</sub> emissions were reduced up to 96%, 96%, 86%, and 15.9%, respectively, in the dual-fuel mode in comparison with the diesel mode. The results also show better and more uniform combustion at the late stage of the combustions inside the cylinder when operating the engine in the dual-fuel mode. Analyzing the emission characteristics and the engine performance when the injection timing varies shows that, operating the engine in the dual-fuel mode with an injection timing of 12 crank angle degrees before the top dead center is the best solution to reduce emissions while keeping the optimal engine power. |
| first_indexed | 2024-03-09T06:02:02Z |
| format | Article |
| id | doaj.art-2745b6cd23564dc7a9d17937ce4a3a0d |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T06:02:02Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-2745b6cd23564dc7a9d17937ce4a3a0d2023-12-03T12:07:27ZengMDPI AGEnergies1996-10732021-03-01145134210.3390/en14051342A Numerical Study on the Combustion Process and Emission Characteristics of a Natural Gas-Diesel Dual-Fuel Marine Engine at Full LoadVan Chien Pham0Jae-Hyuk Choi1Beom-Seok Rho2Jun-Soo Kim3Kyunam Park4Sang-Kyun Park5Van Vang Le6Won-Ju Lee7Graduate School of Korea Maritime and Ocean University, 727, Taejong-ro, Yeongdo-gu, Busan 49112, KoreaDivision of Marine Systems Engineering, Korea Maritime and Ocean University, 727, Taejong-ro, Yeongdo-gu, Busan 49112, KoreaKorea Institute of Maritime and Fisheries Technology, 367, Haeyang-ro, Yeongdo-gu, Busan 49111, KoreaKorea Institute of Maritime and Fisheries Technology, 367, Haeyang-ro, Yeongdo-gu, Busan 49111, KoreaMachinery Service Department, Hyundai Global Service, 79, Centum Jungang-ro, Haeundae-gu, Busan 48058, KoreaDivision of Marine IT, Korea Maritime and Ocean University, 727, Taejong-ro, Yeongdo-gu, Busan 49112, KoreaMaritime Academy, Ho Chi Minh City University of Transport, No.2, Vo Oanh Str., Binh Thanh Dist., Ho Chi Minh 717400, VietnamDivision of Marine Engineering, Korea Maritime and Ocean University, 727, Taejong-ro, Yeongdo-gu, Busan 49112, KoreaThis paper presents research on the combustion and emission characteristics of a four-stroke Natural gas–Diesel dual-fuel marine engine at full load. The AVL FIRE R2018a (AVL List GmbH, Graz, Austria) simulation software was used to conduct three-dimensional simulations of the combustion process and emission formations inside the engine cylinder in both diesel and dual-fuel mode to analyze the in-cylinder pressure, temperature, and emission characteristics. The simulation results were then compared and showed a good agreement with the measured values reported in the engine’s shop test technical data. The simulation results showed reductions in the in-cylinder pressure and temperature peaks by 1.7% and 6.75%, while NO, soot, CO, and CO<sub>2</sub> emissions were reduced up to 96%, 96%, 86%, and 15.9%, respectively, in the dual-fuel mode in comparison with the diesel mode. The results also show better and more uniform combustion at the late stage of the combustions inside the cylinder when operating the engine in the dual-fuel mode. Analyzing the emission characteristics and the engine performance when the injection timing varies shows that, operating the engine in the dual-fuel mode with an injection timing of 12 crank angle degrees before the top dead center is the best solution to reduce emissions while keeping the optimal engine power.https://www.mdpi.com/1996-1073/14/5/1342natural gas (NG)dual-fuel (DF) enginecombustionemissionnumerical simulationcomputational fluid dynamics (CFD) |
| spellingShingle | Van Chien Pham Jae-Hyuk Choi Beom-Seok Rho Jun-Soo Kim Kyunam Park Sang-Kyun Park Van Vang Le Won-Ju Lee A Numerical Study on the Combustion Process and Emission Characteristics of a Natural Gas-Diesel Dual-Fuel Marine Engine at Full Load Energies natural gas (NG) dual-fuel (DF) engine combustion emission numerical simulation computational fluid dynamics (CFD) |
| title | A Numerical Study on the Combustion Process and Emission Characteristics of a Natural Gas-Diesel Dual-Fuel Marine Engine at Full Load |
| title_full | A Numerical Study on the Combustion Process and Emission Characteristics of a Natural Gas-Diesel Dual-Fuel Marine Engine at Full Load |
| title_fullStr | A Numerical Study on the Combustion Process and Emission Characteristics of a Natural Gas-Diesel Dual-Fuel Marine Engine at Full Load |
| title_full_unstemmed | A Numerical Study on the Combustion Process and Emission Characteristics of a Natural Gas-Diesel Dual-Fuel Marine Engine at Full Load |
| title_short | A Numerical Study on the Combustion Process and Emission Characteristics of a Natural Gas-Diesel Dual-Fuel Marine Engine at Full Load |
| title_sort | numerical study on the combustion process and emission characteristics of a natural gas diesel dual fuel marine engine at full load |
| topic | natural gas (NG) dual-fuel (DF) engine combustion emission numerical simulation computational fluid dynamics (CFD) |
| url | https://www.mdpi.com/1996-1073/14/5/1342 |
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