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边界条件对乙醇HCCI发动机燃烧的影响
Influence of boundary condition on combustion of ethanol HCCI engine
【摘要】 利用发动机循环模拟软件BOOST,并使用详细的化学反应动力学机理,建立了乙醇HCCI发动机的单区模型。模拟计算结果与试验结果吻合得较好。利用该模型研究了气门流量系数和缸内壁面温度对燃烧的影响。模拟计算结果表明,该HCCI发动机的气门流量系数不宜取得很大,在较小的流量系数下HCCI的燃烧变得柔和;而改变壁面温度相当于对进气加热,促进了燃烧。
【Abstract】 Combined the engine cycle simulation software BOOST and the detailed mechanism of ethanol chemical reaction kinetics,a single-zone model of ethanol HCCI engine was established.Comparing the simulation results with the test results showed a good consistency,especially in calculating the ignition timing.Simulation by the model indicates that decreasing the intake and exhaust valve flow coefficients of this HCCI engine could make the combustion of ethanol HCCI engine gentler,while increasing the temperature of the cylinder wall means heating the intake charge,leading to the promotion of the combustion.
【Key words】 power machinery and engineering; homogeneous charge compression ignition(HCCI); BOOST; CHEMKIN; flow coefficient; cylinder wall temperature;
- 【文献出处】 吉林大学学报(工学版) ,Journal of Jilin University Engineering and Technology Edition , 编辑部邮箱 ,2007年01期
- 【分类号】TK401
- 【被引频次】3
- 【下载频次】282