集成排气歧管缸盖的设计与优化
|
摘要
研究集成排气歧管(integrated exhaust manifold,IEM)缸盖的技术特点,对IEM缸盖排气道的结构选型、水套流场分布及结构优化、排气道热应力分析及结构优化、排气系统和冷却系统的热管理优化以及IEM缸盖与发动机在排放与暖风性能上的优化匹配等进行系统的分析,制定IEM缸盖的设计和结构优化措施。试验表明,优化后的缸盖热负荷明显降低,排放、冷起动阶段暖风性能得到改善。
The design development of integrated exhaust manifold(IEM) cylinder head is discussed. The key indicators of IEM cylinder head are established and verified by a series of experiments including the structure selection of exhaust passage, the flow distribution and structure optimization of water jacket, the thermal stress analysis and structure optimization of the exhaust port, the thermal management optimization of the exhaust system and cooling system as well as the optimized matching between emission and heater performance. Combined with the test verification, the key indexes of IEM cylinder head design and development are established.
The design development of integrated exhaust manifold(IEM) cylinder head is discussed. The key indicators of IEM cylinder head are established and verified by a series of experiments including the structure selection of exhaust passage, the flow distribution and structure optimization of water jacket, the thermal stress analysis and structure optimization of the exhaust port, the thermal management optimization of the exhaust system and cooling system as well as the optimized matching between emission and heater performance. Combined with the test verification, the key indexes of IEM cylinder head design and development are established.
引文
[1]KOJIMA S.Development of high-performance and low-emission gasoline engine[C].SAE Technical Paper 2008-01-0608,2008.
[2]徐德阳.汽油机缸盖鼻梁区水套沸腾传热研究[D].长春:吉林大学,2016.
[3]慕金华,李亚南.1.5 L汽油机气缸盖冷却水套的结构改进与分析[J].内燃机与动力装置,2014,31(3):19-22.
[4]TAO B.CFD Homogeneous mixing flow modeling to simulate subcooled nucleate boiling flow[C]//[S.l.]:[s.n.].SAE Technical Papers,2004-01-1512,2004.
[5]CHEN M,WANG Y,WU W,et al.Thermal-mechanical fatigue prediction of aluminum cylinder head with integrated exhaust manifold of a turbo charged gasoline engine[C]//[s.l.]:[s.n.].SAE Technical Papers,2016-01-1085,2016.
[6]赵福全.汽油车近零排放技术[M].北京:机械工业出版社,2010.
[7]K·库荷尔巴茨.具有集成排气岐管的发动机设备:102099558 A[P].2011-06-15.
[8]TAYLOR J,FRASER N,WIESKE P.Water cooled exhaust manifold and full load EGR technology applied to a downsized direct injection spark ignition engine[J].SAE International Journal of Engines,2010,3(1):225-240.
[9]RAY H,PETER M,MARCUS F,et al.Exhaust system thermal management:a process to optimize exhaust enthalpy for cold start emissions reduction[C].SAE Technical Papers,2017-01-0141,2017.
[10]TURNER J,PEARSON R,CURTIS R,et al.Improving fuel economy in a turbocharged DISI engine already employing integrated exhaust manifold technology and variable valve timing[C]//[S.l.]:[s.n.].SAE Technical Papers,2008-01-2449,2008.
[2]徐德阳.汽油机缸盖鼻梁区水套沸腾传热研究[D].长春:吉林大学,2016.
[3]慕金华,李亚南.1.5 L汽油机气缸盖冷却水套的结构改进与分析[J].内燃机与动力装置,2014,31(3):19-22.
[4]TAO B.CFD Homogeneous mixing flow modeling to simulate subcooled nucleate boiling flow[C]//[S.l.]:[s.n.].SAE Technical Papers,2004-01-1512,2004.
[5]CHEN M,WANG Y,WU W,et al.Thermal-mechanical fatigue prediction of aluminum cylinder head with integrated exhaust manifold of a turbo charged gasoline engine[C]//[s.l.]:[s.n.].SAE Technical Papers,2016-01-1085,2016.
[6]赵福全.汽油车近零排放技术[M].北京:机械工业出版社,2010.
[7]K·库荷尔巴茨.具有集成排气岐管的发动机设备:102099558 A[P].2011-06-15.
[8]TAYLOR J,FRASER N,WIESKE P.Water cooled exhaust manifold and full load EGR technology applied to a downsized direct injection spark ignition engine[J].SAE International Journal of Engines,2010,3(1):225-240.
[9]RAY H,PETER M,MARCUS F,et al.Exhaust system thermal management:a process to optimize exhaust enthalpy for cold start emissions reduction[C].SAE Technical Papers,2017-01-0141,2017.
[10]TURNER J,PEARSON R,CURTIS R,et al.Improving fuel economy in a turbocharged DISI engine already employing integrated exhaust manifold technology and variable valve timing[C]//[S.l.]:[s.n.].SAE Technical Papers,2008-01-2449,2008.