Optimization of Marine Two-Stroke Diesel Engine Based on Air Intake Composition and Temperature Control
The influence of gas intake temperature, composition and the volume concentration of each gas component on diesel engine combustion, emission and the output power was studied by building a calculation model of the B&W 6S35ME-B9 marine two-stroke low-speed diesel engine, followed by a comprehensi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/13/2/355 |
| _version_ | 1797482715261435904 |
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| author | Xianzhong He Qinming Tan Yuehong Wu Cunfeng Wei |
| author_facet | Xianzhong He Qinming Tan Yuehong Wu Cunfeng Wei |
| author_sort | Xianzhong He |
| collection | DOAJ |
| description | The influence of gas intake temperature, composition and the volume concentration of each gas component on diesel engine combustion, emission and the output power was studied by building a calculation model of the B&W 6S35ME-B9 marine two-stroke low-speed diesel engine, followed by a comprehensive optimization exploration. The results showed that under 295 K and 18.5% O<sub>2</sub> of intake gas, the engine’s NOx emission is only 4.5 g/kWh and reduced to 58% from the normal air gas intake condition. Moreover, their power output is very similar. In addition, the effect of CO<sub>2</sub> or H<sub>2</sub>O added into the intake of the diesel engine on the performance of the diesel engine can be compensated by reducing the intake temperature. At the intake temperature of 295 K, the engine’s NOx emission with 20.58% O<sub>2</sub>, 77.42% N<sub>2</sub> and 2% H<sub>2</sub>O is 8.62 g/kWh, and 9.06 g/kWh under 20.79% O<sub>2</sub>, 78.21% N<sub>2</sub> and 2% CO<sub>2</sub>. It is lower than 11.77 g/kWh, which is under normal intake conditions (315 K, 21%O<sub>2</sub> and 79%N<sub>2</sub>). The power output is also similar to the normal intake condition. Therefore, the comprehensive optimization of gas intake temperature, composition and concentration can effectively optimize the diesel engine’s performance in terms of combustion, emission and power output. The research results have an important reference value for the optimization of diesel engine performance. |
| first_indexed | 2024-03-09T22:37:25Z |
| format | Article |
| id | doaj.art-1ad41b67af30454d9b84354092b2dc1b |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-09T22:37:25Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-1ad41b67af30454d9b84354092b2dc1b2023-11-23T18:46:20ZengMDPI AGAtmosphere2073-44332022-02-0113235510.3390/atmos13020355Optimization of Marine Two-Stroke Diesel Engine Based on Air Intake Composition and Temperature ControlXianzhong He0Qinming Tan1Yuehong Wu2Cunfeng Wei3Merchant College, Shanghai Maritime University, Shanghai 201306, ChinaMerchant College, Shanghai Maritime University, Shanghai 201306, ChinaChina Classification Society, Zhoushan 316004, ChinaChina Shipbuilding Power Engineering Institute, Shanghai 200120, ChinaThe influence of gas intake temperature, composition and the volume concentration of each gas component on diesel engine combustion, emission and the output power was studied by building a calculation model of the B&W 6S35ME-B9 marine two-stroke low-speed diesel engine, followed by a comprehensive optimization exploration. The results showed that under 295 K and 18.5% O<sub>2</sub> of intake gas, the engine’s NOx emission is only 4.5 g/kWh and reduced to 58% from the normal air gas intake condition. Moreover, their power output is very similar. In addition, the effect of CO<sub>2</sub> or H<sub>2</sub>O added into the intake of the diesel engine on the performance of the diesel engine can be compensated by reducing the intake temperature. At the intake temperature of 295 K, the engine’s NOx emission with 20.58% O<sub>2</sub>, 77.42% N<sub>2</sub> and 2% H<sub>2</sub>O is 8.62 g/kWh, and 9.06 g/kWh under 20.79% O<sub>2</sub>, 78.21% N<sub>2</sub> and 2% CO<sub>2</sub>. It is lower than 11.77 g/kWh, which is under normal intake conditions (315 K, 21%O<sub>2</sub> and 79%N<sub>2</sub>). The power output is also similar to the normal intake condition. Therefore, the comprehensive optimization of gas intake temperature, composition and concentration can effectively optimize the diesel engine’s performance in terms of combustion, emission and power output. The research results have an important reference value for the optimization of diesel engine performance.https://www.mdpi.com/2073-4433/13/2/355marine diesel enginecombustionemissionlow temperature intakeoxygen reduction |
| spellingShingle | Xianzhong He Qinming Tan Yuehong Wu Cunfeng Wei Optimization of Marine Two-Stroke Diesel Engine Based on Air Intake Composition and Temperature Control Atmosphere marine diesel engine combustion emission low temperature intake oxygen reduction |
| title | Optimization of Marine Two-Stroke Diesel Engine Based on Air Intake Composition and Temperature Control |
| title_full | Optimization of Marine Two-Stroke Diesel Engine Based on Air Intake Composition and Temperature Control |
| title_fullStr | Optimization of Marine Two-Stroke Diesel Engine Based on Air Intake Composition and Temperature Control |
| title_full_unstemmed | Optimization of Marine Two-Stroke Diesel Engine Based on Air Intake Composition and Temperature Control |
| title_short | Optimization of Marine Two-Stroke Diesel Engine Based on Air Intake Composition and Temperature Control |
| title_sort | optimization of marine two stroke diesel engine based on air intake composition and temperature control |
| topic | marine diesel engine combustion emission low temperature intake oxygen reduction |
| url | https://www.mdpi.com/2073-4433/13/2/355 |
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