适用于HCCI发动机的异辛烷氧化的化学动力学模型(Ⅱ)——一个新的骨架机理  

A Chemical Kinetics Model of Iso-Octane Oxidation for HCCI Engine (Ⅱ)——A new skeleton mechanism

作　　者：贾明[1] 解茂昭[1] 

机构地区：[1]大连理工大学动力工程系,辽定大连116024

出　　处：《内燃机学报》2006年第4期295-301,共7页Transactions of Csice

基　　金：国家基础研究重点规划项目子课题(2001CB209201)。

摘　　要：构造了一个包括40种组分和69个反应的异辛烷氧化的骨架机理,该机理可以较准确计算着火点、燃烧速率以及HC、CO和NO_x的排放,适用于HCCI发动机的多维模型的计算。通过与激波管、速压机、喷射搅拌反应器和HCCI发动机实验数据的比较表明,该反应机理在不同温度、压力和当量比下,尤其在高压、稀薄的反应条件下具有很好的性能。在HCCI发动机的单区模型计算中骨架机理计算结果与Curran等人的详细机理计算结果基本相同。A skeleton mechanism for iso-octane oxidation including 40 species and 69 reactions was developed. This mechanism could predict ignition timing, burning rate and emissions of HC, CO and NOx of homogeneous charge compression ignition （HCCI） engines, and can be applied to multi-dimensional CFD model. Comparisons between calculations and experiments including shock tube, rapid compression machine, jet stirred reactor and HCCI engine indicate the good predictability of this mechanism over wide range of temperature, pressures and equivalence ratios, especially under high pressure and lean equivalence ratio conditions. Applying the skeleton mechanism to the single zone model of HCCI engines showed that the results gave the same prediction with those from the detailed mechanism developed by Curran.

关 键 词：异辛烷 化学动力学模型 均质压燃(HCCI)发动机 

分 类 号：TK401[动力工程及工程热物理—动力机械及工程]