煤层气发动机CO排放量数值模拟及试验  

Numerical calculation and experiment on CO emissions of spark ignition engine fueled with coal bed methane

作　　者：左承基[1] 钱叶剑[1] 顾红兰[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院,安徽合肥230009

出　　处：《热科学与技术》2005年第2期174-177,共4页Journal of Thermal Science and Technology

基　　金：国家自然科学基金资助项目 (5 0 0 760 12 )

摘　　要：根据化学反应动力学原理,建立了火花点火式变组分煤层气发动机CO的生成模型,该模型由碳氢燃料高温氧化生成CO以及CO在火焰中及火焰后氧化两部分组成。以MATLAB程序设计语言为应用平台,对CO的瞬时排放量进行了模拟计算,得到了发动机缸内CO的变化规律。同时,计算和分析了煤层气组分变化对CO排放的影响,并与实验结果进行了比较。研究结果证实,所建立的CO排放模型是合理的。理论和试验结果表明。Based on chemical reaction dynamics, a CO emission model of the spark ignition engines fueled with various components coal bed methane was developed in this paper. The CO emission model is consisted of the CO generation of carbon hydrogen fuel in high temperature oxide condition and the oxidation of CO in or after flame. The CO emission in cylinder was simulated based on the MATLAB platform. The effects of various components in coal bed methane on CO emission were calculated and analyzed. The results were compared with the experimental results. Results indicate that the emission model developed in this paper is reasonable. Increase of methane concentration in coal bed gas and the load of the engine can decrease the CO emission effectively.

关 键 词：煤层气发动机 排放量 数值模拟 MATLAB程序设计语言 动力学原理 化学反应 生成模型 火花点火 高温氧化 碳氢燃料 应用平台 模拟计算 变化规律 CO排放 组分变化 排放模型 研究结果 试验结果 甲烷浓度 后氧化 火焰 瞬时 

分 类 号：U464.174[机械工程—车辆工程] U469.11[交通运输工程—载运工具运用工程]