[1]鹿盈盈,裴毅强,刘一泽,等.转速对柴油机中负荷预混压燃燃烧和排放的影响[J].内燃机学报,2022,(06):495-503.
　Lu Yingying,Pei Yiqiang,Liu Yize,et al.Effect of Speed on PCCI Combustion and Emissions in a Diesel Engine at Medium Load[J].,2022,(06):495-503.
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转速对柴油机中负荷预混压燃燃烧和排放的影响
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《内燃机学报》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2022年06
页码:
495-503
栏目:
出版日期:
2022-11-25

文章信息/Info

Title:
Effect of Speed on PCCI Combustion and Emissions in a Diesel Engine at Medium Load
作者:
鹿盈盈; 裴毅强; 刘一泽; 范超
1. 南京工业大学 机械与动力工程学院，江苏 南京 211816；2. 天津大学 内燃机燃烧学国家重点实验室，天津 300350
Author(s):
Lu Yingying; Pei Yiqiang; Liu Yize; Fan Chao
1. School of Mechanical and Power Engineering，Nanjing Tech University，Nanjing 211816，China；2. State Key Laboratory of Engines，Tianjin University，Tianjin 300350，China
关键词:
重型柴油机; 预混压燃; 中负荷; 多脉冲喷油定时; 排放
Keywords:
heavy-duty diesel engine; premixed charge compression ignition; medium load; multi-pulse injection timing; emissions
分类号:
TK401
文献标志码:
A
摘要:
试验和数值模拟研究了进气压力、转速、多脉冲喷油定时对重型柴油机中负荷预混压燃(PCCI)燃烧和排放的影响．结果表明：进气增压有助于提高指示热效率(ITE)，减小燃烧损失．转速提高使得高温着火时刻推迟，过浓混合气质量分数降低；NOx、碳烟、CO和未燃碳氢(UHC)排放均降低；ITE升高，燃烧损失降低，排气损失升高．多脉冲喷油定时推迟使得混合时间缩短，过浓混合气质量分数提高，初始碳烟生成量增加，但在混合空间和燃烧温度的共同作用下，碳烟、CO和UHC排放均降低，NOx排放变化不大；ITE升高，燃烧损失降低，排气损失升高．
Abstract:
Effects of intake pressure，engine speed and multi-pulse injection timing on premixed charge compression ignition(PCCI)combustion and emissions were studied on a heavy-duty diesel engine at medium load. Results show that，intake boost helps increase the indicated thermal efficiency(ITE) and decrease the combustion loss. With increasing the engine speed，the high temperature ignition timing is retarded，the ITE and the exhaust loss are increased，but the mass fraction of over-rich mixture，the combustion loss and all emissions including NOx，soot，CO and unburned hydrocarbon(UHC) are decreased. With the delay of multi-pulse injection timing，the mixing timing is shortened，the mass fraction of over-rich mixture and the initial soot generation are increased. However，due to the combined effects of mixture space and combustion temperature，the ITE and the exhaust loss are increased，the combustion loss and the soot，CO and UHC emissions are decreased，while the NOx emissions are little changed.

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更新日期/Last Update: 2022-11-25