摘要
利用化学反应动力学软件建立二甲醚均质压燃燃烧模型,研究了压缩比和进气掺入CO2对二甲醚均质燃烧的影响。结果表明:增大压缩比加快了二甲醚基元反应速率,使着火提前,燃烧压力、温度上升;进气中加入CO2可以延迟着火时刻,降低缸内压力和温度;CO2对二甲醚均质压燃高温燃烧阶段影响更大。
By using chemical reaction dynamics software to set up dimethyl ether homogeneous compression combustion model, this paper researches effect of compression ratio and intake air with CO2 on dimethyl ether homogeneous combustion. The result shows that increasing compression ratio quickens reaction velocity of dimethyl ether basic element, makes ignition in advance and raise the combustion pressure and temperature. Intake air with CO2 can delay ignition time and lower in-cylinder pressure and temperature. The effect of CO2 on dimethyl ether homogeneous compression ignition during high-temperature combustion is more.
出处
《内燃机》
2010年第1期12-15,共4页
Internal Combustion Engines
基金
四川省教育厅资助科研项目(2006ZD028)
