CA6102型汽油和天然气发动机燃烧过程模拟计算及爆震预测  

Simulation of Combustion and Knock Prediction in CNG and Gasoline CA6102 Engines

作　　者：姚喜贵[1] 刘延超[2] 张磊佳 王宇 孙红旗[1] 孙济美[4] 

机构地区：[1]佳木斯大学机械工程学院,佳木斯市154007 [2]佳木斯公路管理处,佳木斯市154002 [3]木斯大学化学与药学院实验师 [4]吉林工业大学汽车学院,长春市130025

出　　处：《农业机械学报》2000年第3期15-18,23,共5页Transactions of the Chinese Society for Agricultural Machinery

摘　　要：将计算焰前反应的化学反应动力学模型、燃烧模型及紊流火焰传播模型相结合 ,建立了燃料焰前反应的化学动力学模型和点火式天然气发动机和汽油机双区燃烧模型。用该模型能较好地模拟两机的燃烧过程 ,并能实现爆震预测。用此模型对 CA6 10 2型发动机燃用天然气和汽油分别进行模拟计算 ,计算结果与试验结果吻合较好。A turbulent flame propagation model was established based on a combination of the double area combustion model and the reduced kinetic model for CNG and gasoline engines. The combustion model is available to simulate the combustion process, predict the knock in spark ignition engines, and analyse some factors ( ratio of compression, temperature of intake gases) influencing knock of engines. The CA6102 engine was changed into spark ignition CNG engine and the experiment was carried out on it. The simulated results on CA6102 automotive gasoline and CNG engines agree well with the corresponding experimental data, which proves that it is feasible in gasoline and CNG engines. It provides a theoretical bases for studying CNG and gasoline engines as well as their combustion process and predicting the knock in spark ignition engines.

关 键 词：双燃料发动机 爆震预测 燃烧模型 汽油 天然气 

分 类 号：U464.114[机械工程—车辆工程] U463.173[交通运输工程—载运工具运用工程]