摘要
对添加了均流装置的天然气汽车尾气催化转化器内的流场阻力特性进行了数值研究。结果表明:改变载体安装位置对催化器内的压力损失影响很明显。催化器内添加均流装置会增大催化器段的压力损失,但采用合理的均流装置会使催化器内压力损失增加得较小。组合式导流板造成的压力损失对发动机影响很小,均流装置可以显著改善催化器内的流场均匀性。采用合理的导流结构和安装位置可以使压力损失较小。
The steady flow resistance in the Three Catalytic Converters(TWC) with guide components of CNG(Compressed Natural Gas)cars is simulated.The location set guide flow equipment has great impact on pressure losing which can be adjusted to the optimal while adopting some measures.Pressure losing by adding combination flow-guide plate which can evidently improve flow field uniformity has a little impact on engine.Pressure losing will be small while adopting optimal location and guiding-flow construction.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第5期36-38,44,共4页
Journal of Chongqing University
基金
重庆市科技攻关项目(2002-07)
重庆市自然科学基金项目(2003-7956)
关键词
均流装置
催化转化器
阻力特性
数值模拟
guide flow device
catalytic converters
resistance characteristic
numerical simulation
