江苏大学学报（自然科学版）2012，Vol.33Issue(4)：390-395,6.DOI:10.3969/j.issn.1671-7775.2012.04.004
柴油机燃烧过程的数值模拟及燃烧室改进
Numerical simulation for combustion process of diesel engine and improvement of combustion chamber
摘要
Abstract
In order to improve the mixture formation and combustion quality in combustion chamber of DLH1105 diesel engine, the cylinder spray and combustion process were numerically simulated. Three combustion chambers of open combustion chamber, toroidal combustion chamber and reentrant combustion chamber were designed at constant compression ratio. 3-D numerical simulation of the three type combustion chambers were achieved by STAR-CD software to obtain flow field, distribution of fuel mass fraction and temperature field in the diesel engine cylinder. The simulation result shows that cylinder spray and combustion process are consistent with those of visualized experiment, which means that the method of computational simulation is reliable. Reentrant combustion chamber has strong squish with long swirl period, which results in better mixture gas and combustion performance than those of toroidal combustion chamber and open combustion chamber. The pressure and temperature in reentrant combustion cylinder are high with low shoot formation and high NO amount.关键词
直喷式柴油机/燃烧室/高速摄影/数值模拟/燃油质量分数分布/温度场Key words
DI diesel engine/combustion chamber/high-speed photography/numerical simulation/distribution of fuel mass fraction/temperature field分类
能源科技引用本文复制引用
潘剑锋,卢青波,王谦,万彦辉,张梦云..柴油机燃烧过程的数值模拟及燃烧室改进[J].江苏大学学报（自然科学版）,2012,33(4):390-395,6.基金项目
江苏省科技支撑计划项目(SBE201000356) （SBE201000356）
江苏高校优势学科建设工程项目 （）
江苏省"六大人才高峰"项目(2011-ZBZZ-27) （2011-ZBZZ-27）
