哈尔滨工程大学学报2011，Vol.32Issue(7)：911-915,5.DOI:10.3969/j.issn.1007-7043.2011.07.013
相继增压柴油机切换点排放性能数值模拟研究
Numerical study on the emission performance of an STC diesel engine in switching conditions
摘要
Abstract
In order to study the difference of the emissions between 1TC and 2TC under the switching condition, a multi-dimensional numerical simulation model for the sequential turbo charging ( STC ) diesel engine was established by the software STAR-CD. The initial boundary condition of the model was calculated by the GT-POWER method. Based on the model, the cylinder temperature field and the emissions concentration field were compared when one or two turbos were operating in the same working condition. The curve of pressure inside cylinder, the curve of heat release rate and the curve of temperature inside cylinder were given. The model results showed that both the intake flowrate and pressure of 1TC were increased; the mixture formation of 1TC was more homogeneous and combustion was more complete than in the 2TC. Therefore, the average cylinder pressure of 1TC was higher than for 2TC, the average cylinder temperature of 1 TC was lower than for 2TC, and the NO, and soot emissions were less than in 2TC.关键词
相继增压柴油机/切换工况/排放性能/数值模拟Key words
STC diesel/switching condition/emission performance/numerical simulation分类
能源与动力引用本文复制引用
李昕光,王银燕..相继增压柴油机切换点排放性能数值模拟研究[J].哈尔滨工程大学学报,2011,32(7):911-915,5.基金项目
工信部基础研究基金资助项目(4010103010402). （4010103010402）
