| 冷起动时甲醇掺烧液化气发动机的甲醛和未燃甲醇排放 |
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| 引用本文： | 宫长明,李骏,于秀敏,王忠,刘巽俊.冷起动时甲醇掺烧液化气发动机的甲醛和未燃甲醇排放[J].西安交通大学学报,2010,44(5). |
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| 作者姓名： | 宫长明 李骏 于秀敏 王忠 刘巽俊 |
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| 作者单位： | 1. 吉林大学汽车动态模拟国家重点实验室,130022,长春
2. 中国第一汽车集团公司技术中心,130011,长春 |
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| 摘 要： | 基于单循环燃料喷射控制策略及冷起动,在一台125mL单缸电控喷射点燃式发动机上,试验研究了LPG(液化石油气)与甲醇循环喷射量的质量比和LPG迟后甲醇喷射时刻对甲醇掺烧LPG发动机甲醛和未燃甲醇排放的影响.甲醇掺烧LPG发动机中LPG仅起辅助起动作用.试验结果表明:增大LPG与甲醇循环喷射量质量比可使甲醇掺烧LPG发动机着火性能改善,未燃甲醇排放减少,甲醛排放增多;合理控制LPG迟后甲醇喷射时刻可显著改善着火性能,减少未燃甲醇排放,而甲醛排放稍有增加;LPG迟后甲醇在曲轴转角为276°时(上止点前)喷射,缸内最大压力达4.46MPa,未燃甲醇的体积分数减小到1173×10-6.甲醇掺烧LPG发动机时起动工况的甲醛和未燃甲醇排放量随LPG与甲醇循环喷射量的质量比和LPG迟后甲醇喷射时刻的变化呈相反的变化趋势.
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| 关 键 词： | 点燃式发动机 液化石油气 冷起动 |
Emissions of Formaldehyde and Unburned Methanol from a Methanol Engine with Liquefied Petroleum Gas as Ignition Improver During Cold Start |
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| GONG Changming,LI Jun,YU Xiumin,WANG Zhong,LIU Xunjun.Emissions of Formaldehyde and Unburned Methanol from a Methanol Engine with Liquefied Petroleum Gas as Ignition Improver During Cold Start[J].Journal of Xi'an Jiaotong University,2010,44(5). |
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| Authors: | GONG Changming LI Jun YU Xiumin WANG Zhong LIU Xunjun |
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| Institution: | GONG Changming1,LI Jun2,YU Xiumin1,WANG Zhong1,LIU Xunjun1(1.State Key Laboratory of Automobiles Dynamic Simulation,Jilin University,Changchun 130022,China,2.Research ,Development Center,China First Automobile Works Group Corporation,Changchun 130011,China) |
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| Abstract: | The effects of the mass ratio of injected liquefied petroleum gas(LPG)to methanol and the LPG injection timing delay relative to the methanol injection timing on the formaldehyde and the unburned methanol emissions of a methanol blended with LPG engine during cold start were experimentally investigated using the single-cycle methanol injection strategy on an engine with fuel injection spark-ignition controlled electronically.The LPG offers only a function of supplementing start in methanol blended with LPG ... |
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| Keywords: | spark-ignition methanol engine liquefied petroleum gas cold start |
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