| 不同燃烧模式下正庚烷燃烧发动机排气超细颗粒特性 |
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| 引用本文： | 刘炜,黄震.不同燃烧模式下正庚烷燃烧发动机排气超细颗粒特性[J].上海交通大学学报,2011,45(6):837-841. |
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| 作者姓名： | 刘炜 黄震 |
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| 作者单位： | (1.上海交通大学 动力机械与工程教育部重点实验室,上海 200240；
2.深圳创新集团投资有限公司 博士后工作站,广东 深圳 518048) |
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| 基金项目： | 教育部高校博士点基金项目(20070248024) |
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| 摘 要： | 在改造的发动机上研究了正庚烷缸内直喷压燃（CIDI）、进气道喷射均质压燃（HCCI）以及进气道 气缸喷射复合燃烧（CCCI）3种燃烧模式的发动机排气超细颗粒特性.结果表明，排气超细颗粒数浓度-粒径分布曲线随预混合率变化显著；CIDI燃烧时，排气超细颗粒以积聚模态微粒为主.随着预混合率的增大，排气积聚模态微粒数浓度明显降低,而核模态数浓度则显著增大;正庚烷HCCI燃烧时发动机排气超细颗粒以核模态微粒为主，积聚模态微粒数浓度很低;正庚烷CCCI和HCCI燃烧时发动机排气总颗粒数浓度明显较CIDI燃烧时高.排气核模态数浓度与HC排放明显相关.
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| 关 键 词： | 燃烧模式 排气 超细颗粒 正庚烷 |
| 收稿时间： | 2010-05-05 |
Effects of Combustion Modes on Exhaust Particle Size Distributions from a Diesel Engine Fueled with n-Heptane |
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| LIU Wei,HUANG Zhen.Effects of Combustion Modes on Exhaust Particle Size Distributions from a Diesel Engine Fueled with n-Heptane[J].Journal of Shanghai Jiaotong University,2011,45(6):837-841. |
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| Authors: | LIU Wei HUANG Zhen |
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| Institution: | ( 1. Key Laboratory for Power Machinery and Engineering of Ministry of Education,Shanghai Jiaotong University, Shanghai 200240, China； 2. Postdoctoral Working Station, Shenzhen Capital Group Co., Ltd, Shenzhen 518048, Guangdong, China) |
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| Abstract: | Effect of combustion modes(including compression ignition direct injection(CIDI),homogeneous charge compression ignition(HCCI) and compound charge compression ignition(CCCI) combustion) on NSDs of exhaust particles from engines fuelled with n-heptane was studied.The results indicate that the structure of NSDs for n-heptane changes with premixed ratio(rp) obviously.The accumulation mode dominates in CIDI case.With the increase of rp,the accumulation mode decreases,the nucleation mode increases significantly.... |
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| Keywords: | combustion mode exhaust ultrafine particle n-heptane |
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