Thermal Characteristics Investigation of the Internal Combustion Engine Cooling-Combustion System Using Thermal Boundary Dynamic Coupling Method and Experimental Verification
The engine cooling system must be able to match up with the stable operating conditions so as to guarantee the engine performance. On the working cycle level, however, the dynamic thermo-state of engines has not been considered in the cooling strategy. Besides, the frequent over-cooling boiling insi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-08-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/11/8/2127 |
| _version_ | 1811263025717444608 |
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| author | Junhong Zhang Zhexuan Xu Jiewei Lin Zefeng Lin Jingchao Wang Tianshu Xu |
| author_facet | Junhong Zhang Zhexuan Xu Jiewei Lin Zefeng Lin Jingchao Wang Tianshu Xu |
| author_sort | Junhong Zhang |
| collection | DOAJ |
| description | The engine cooling system must be able to match up with the stable operating conditions so as to guarantee the engine performance. On the working cycle level, however, the dynamic thermo-state of engines has not been considered in the cooling strategy. Besides, the frequent over-cooling boiling inside the gallery changes the cooling capacity constantly. It is necessary to study the coupling effect caused by the interaction of cooling flow and in-cylinder combustion so as to provide details of the dynamic control of cooling systems. To this end, this study develops a coupled modeling scheme of the cooling process considering the interaction of combustion and coolant flow. The global reaction mechanism is used for the combustion process and the multiphase flow method is employed to simulate the coolant flow considering the wall boiling and the interphase forces. The two sub-models exchange information of in-cylinder temperature, heat transfer coefficient, and wall temperature to achieve the coupled computation. The proposed modeling process is verified through the measured diesel engine power, in-cylinder pressure, and fire surface temperature of cylinder head. Then the effects of different cooling conditions on the cyclic engine performances are analyzed and discussed. |
| first_indexed | 2024-04-12T19:37:31Z |
| format | Article |
| id | doaj.art-4c7d095cdb4a43318fbf3767e925ac09 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-12T19:37:31Z |
| publishDate | 2018-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-4c7d095cdb4a43318fbf3767e925ac092022-12-22T03:19:10ZengMDPI AGEnergies1996-10732018-08-01118212710.3390/en11082127en11082127Thermal Characteristics Investigation of the Internal Combustion Engine Cooling-Combustion System Using Thermal Boundary Dynamic Coupling Method and Experimental VerificationJunhong Zhang0Zhexuan Xu1Jiewei Lin2Zefeng Lin3Jingchao Wang4Tianshu Xu5State Key Laboratory of Engine, Tianjin University, Tianjin 300072, ChinaState Key Laboratory of Engine, Tianjin University, Tianjin 300072, ChinaState Key Laboratory of Engine, Tianjin University, Tianjin 300072, ChinaState Key Laboratory of Engine, Tianjin University, Tianjin 300072, ChinaState Key Laboratory of Engine, Tianjin University, Tianjin 300072, ChinaState Key Laboratory of Engine, Tianjin University, Tianjin 300072, ChinaThe engine cooling system must be able to match up with the stable operating conditions so as to guarantee the engine performance. On the working cycle level, however, the dynamic thermo-state of engines has not been considered in the cooling strategy. Besides, the frequent over-cooling boiling inside the gallery changes the cooling capacity constantly. It is necessary to study the coupling effect caused by the interaction of cooling flow and in-cylinder combustion so as to provide details of the dynamic control of cooling systems. To this end, this study develops a coupled modeling scheme of the cooling process considering the interaction of combustion and coolant flow. The global reaction mechanism is used for the combustion process and the multiphase flow method is employed to simulate the coolant flow considering the wall boiling and the interphase forces. The two sub-models exchange information of in-cylinder temperature, heat transfer coefficient, and wall temperature to achieve the coupled computation. The proposed modeling process is verified through the measured diesel engine power, in-cylinder pressure, and fire surface temperature of cylinder head. Then the effects of different cooling conditions on the cyclic engine performances are analyzed and discussed.http://www.mdpi.com/1996-1073/11/8/2127engine performancecooling systemmultiphase flowcombustiondynamic coupling |
| spellingShingle | Junhong Zhang Zhexuan Xu Jiewei Lin Zefeng Lin Jingchao Wang Tianshu Xu Thermal Characteristics Investigation of the Internal Combustion Engine Cooling-Combustion System Using Thermal Boundary Dynamic Coupling Method and Experimental Verification Energies engine performance cooling system multiphase flow combustion dynamic coupling |
| title | Thermal Characteristics Investigation of the Internal Combustion Engine Cooling-Combustion System Using Thermal Boundary Dynamic Coupling Method and Experimental Verification |
| title_full | Thermal Characteristics Investigation of the Internal Combustion Engine Cooling-Combustion System Using Thermal Boundary Dynamic Coupling Method and Experimental Verification |
| title_fullStr | Thermal Characteristics Investigation of the Internal Combustion Engine Cooling-Combustion System Using Thermal Boundary Dynamic Coupling Method and Experimental Verification |
| title_full_unstemmed | Thermal Characteristics Investigation of the Internal Combustion Engine Cooling-Combustion System Using Thermal Boundary Dynamic Coupling Method and Experimental Verification |
| title_short | Thermal Characteristics Investigation of the Internal Combustion Engine Cooling-Combustion System Using Thermal Boundary Dynamic Coupling Method and Experimental Verification |
| title_sort | thermal characteristics investigation of the internal combustion engine cooling combustion system using thermal boundary dynamic coupling method and experimental verification |
| topic | engine performance cooling system multiphase flow combustion dynamic coupling |
| url | http://www.mdpi.com/1996-1073/11/8/2127 |
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