Effect of the geometrical shapes of the helical-spiral shroud intake valve on swirl generation in cylinder of diesel engine
Improving combustion efficiency for diesel engines is an important requirement to save fuel and lower exhaust gas toxicity. In this study, the effect of the geometric shape of the helical-spiral shroud intake valve (HSSIV) for the swirl generation in a diesel engine cylinder was studied, which has i...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-06-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123023002591 |
| _version_ | 1797802814610604032 |
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| author | Sung Gong Choe Tong Ho Choe In Chol Ho Myong Hak Mun Il Jun Kim Jong Hun Ri Ryong Uhn Jong Yong Chol Kim |
| author_facet | Sung Gong Choe Tong Ho Choe In Chol Ho Myong Hak Mun Il Jun Kim Jong Hun Ri Ryong Uhn Jong Yong Chol Kim |
| author_sort | Sung Gong Choe |
| collection | DOAJ |
| description | Improving combustion efficiency for diesel engines is an important requirement to save fuel and lower exhaust gas toxicity. In this study, the effect of the geometric shape of the helical-spiral shroud intake valve (HSSIV) for the swirl generation in a diesel engine cylinder was studied, which has important significance in improving the combustion efficiency in a diesel engine.In this study, helical-spiral shroud (HSS) are classified into convex, flat, and concave types according to the installation angle on the intake valve, and their influence on the swirl generation in the cylinder are comparatively analyzed using the computational fluid dynamics (CFD) method. As a result, it is considered that HSSIV with convex shape generates the best swirl and tumble effect in the engine cylinder. The Model 1 with convex shape has a swirl ratio value of 32.5 which is 3.8 times larger at 80CAD, and the tumble ratio value is 48.2 which is 4.5 times larger at 130CAD, compared to Model 0 with no shroud. The findings and results of this study were applied to the diesel engine, but they can also be applied to gasoline engines, and can also be applied to research subjects that need to generate a swirl in the fluid flow path without additional energy consumption and reduction in the volumetric efficiency of the fluid. |
| first_indexed | 2024-03-13T05:11:22Z |
| format | Article |
| id | doaj.art-ccec21a806374f8789d3b22135e42c32 |
| institution | Directory Open Access Journal |
| issn | 2590-1230 |
| language | English |
| last_indexed | 2024-03-13T05:11:22Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj.art-ccec21a806374f8789d3b22135e42c322023-06-16T05:11:01ZengElsevierResults in Engineering2590-12302023-06-0118101132Effect of the geometrical shapes of the helical-spiral shroud intake valve on swirl generation in cylinder of diesel engineSung Gong Choe0Tong Ho Choe1In Chol Ho2Myong Hak Mun3Il Jun Kim4Jong Hun Ri5Ryong Uhn Jong6Yong Chol Kim7Department of Information Science and Technology, Kim Chaek University of Technology, Pyongyang, Democratic People's Republic of KoreaDepartment of Transport Mechanical Engineering, Pyongyang University of Mechanical Engineering, Pyongyang, Democratic People's Republic of Korea; Corresponding author.Department of Information Science and Technology, Kim Chaek University of Technology, Pyongyang, Democratic People's Republic of KoreaDepartment of Mechanics, KIM IL, SUNG University, Pyongyang, Democratic People's Republic of KoreaDepartment of Transport Mechanical Engineering, Pyongyang University of Mechanical Engineering, Pyongyang, Democratic People's Republic of KoreaDepartment of Transport Mechanical Engineering, Pyongyang University of Mechanical Engineering, Pyongyang, Democratic People's Republic of KoreaInstitute of Mechanical Design, Pyongyang University of Mechanical Engineering, Pyongyang, Democratic People's Republic of KoreaDepartment of Chemistry, University of Science, Pyongyang, Democratic People's Republic of KoreaImproving combustion efficiency for diesel engines is an important requirement to save fuel and lower exhaust gas toxicity. In this study, the effect of the geometric shape of the helical-spiral shroud intake valve (HSSIV) for the swirl generation in a diesel engine cylinder was studied, which has important significance in improving the combustion efficiency in a diesel engine.In this study, helical-spiral shroud (HSS) are classified into convex, flat, and concave types according to the installation angle on the intake valve, and their influence on the swirl generation in the cylinder are comparatively analyzed using the computational fluid dynamics (CFD) method. As a result, it is considered that HSSIV with convex shape generates the best swirl and tumble effect in the engine cylinder. The Model 1 with convex shape has a swirl ratio value of 32.5 which is 3.8 times larger at 80CAD, and the tumble ratio value is 48.2 which is 4.5 times larger at 130CAD, compared to Model 0 with no shroud. The findings and results of this study were applied to the diesel engine, but they can also be applied to gasoline engines, and can also be applied to research subjects that need to generate a swirl in the fluid flow path without additional energy consumption and reduction in the volumetric efficiency of the fluid.http://www.sciencedirect.com/science/article/pii/S2590123023002591Helical-spiral shroud intake valveDiesel engineSwirl ratioCFD modelIn-cylinder flow |
| spellingShingle | Sung Gong Choe Tong Ho Choe In Chol Ho Myong Hak Mun Il Jun Kim Jong Hun Ri Ryong Uhn Jong Yong Chol Kim Effect of the geometrical shapes of the helical-spiral shroud intake valve on swirl generation in cylinder of diesel engine Results in Engineering Helical-spiral shroud intake valve Diesel engine Swirl ratio CFD model In-cylinder flow |
| title | Effect of the geometrical shapes of the helical-spiral shroud intake valve on swirl generation in cylinder of diesel engine |
| title_full | Effect of the geometrical shapes of the helical-spiral shroud intake valve on swirl generation in cylinder of diesel engine |
| title_fullStr | Effect of the geometrical shapes of the helical-spiral shroud intake valve on swirl generation in cylinder of diesel engine |
| title_full_unstemmed | Effect of the geometrical shapes of the helical-spiral shroud intake valve on swirl generation in cylinder of diesel engine |
| title_short | Effect of the geometrical shapes of the helical-spiral shroud intake valve on swirl generation in cylinder of diesel engine |
| title_sort | effect of the geometrical shapes of the helical spiral shroud intake valve on swirl generation in cylinder of diesel engine |
| topic | Helical-spiral shroud intake valve Diesel engine Swirl ratio CFD model In-cylinder flow |
| url | http://www.sciencedirect.com/science/article/pii/S2590123023002591 |
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