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首页> 外文期刊>Energy & fuels >Effects of Inlet Pressure and Octane Numbers on Combustion and Emissions of a Homogeneous Charge Compression Ignition (HCCI) Engine
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Effects of Inlet Pressure and Octane Numbers on Combustion and Emissions of a Homogeneous Charge Compression Ignition (HCCI) Engine

机译：进气压力和辛烷值对均质增压压缩点火（HCCI）发动机燃烧和排放的影响

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摘要

The influence of inlet pressure (P_(in)) and octane numbers on combustion and emissions of a homogeneous charge compression ignition (HCCI) engine was experimentally investigated. The tests were carried out in a modified four-cylinder direct injection diesel engine. Four fuels with different research octane number (RON) were used during the experiments: 90-RON, 93-RON, and 97-RON primary reference fuel (PRF) blend and a commercial gasoline, 94.1-RON(G). The inlet pressure conditions were set to give 0.1, 0.15, and 0.2 MPa of absolute pressure. The results indicate that, with the increase of inlet pressure, the start of combustion (SOC) advances and the cylinder pressure increases. The effects of the PRF octane number on SOC are weakened as the inlet pressure increased. However, the difference of SOC between gasoline and PRF is enlarged with the increase of the inlet pressure. The successful HCCI operating range is extended to the upper and lower load as the inlet pressure increased. The maximum achievable load of gasoline is higher than that of PRF with the cases of supercharging. The HC and NO_x emissions of the HCCI engine decrease when supercharging is employed, while CO emissions increase remarkably. The PRF octane number has little effect on HC, CO, and NO_x emissions when supercharging is employed. Nevertheless, the HC and CO emissions of gasoline are higher than those of PRF with supercharging.
机译：实验研究了进气压力（P_（in））和辛烷值对均质压燃式（HCCI）发动机燃烧和排放的影响。测试是在改良的四缸直喷柴油发动机上进行的。实验过程中使用了四种具有不同研究辛烷值（RON）的燃料：90 RON，93 RON和97 RON的一级参考燃料（PRF）混合燃料和商用汽油94.1-RON（G）。将入口压力条件设定为给出0.1、0.15和0.2MPa的绝对压力。结果表明，随着进气压力的增加，燃烧开始（SOC）提前，气缸压力增加。随着入口压力的增加，PRF辛烷值对SOC的影响减弱。但是，随着进气压力的增加，汽油和PRF之间的SOC差增大。 HCCI的成功运行范围随着入口压力的增加而扩大到上下负载。在增压情况下，汽油的最大可达到负载高于PRF。当采用增压时，HCCI发动机的HC和NO_x排放降低，而CO排放显着增加。使用增压时，PRF辛烷值对HC，CO和NO_x排放影响很小。尽管如此，带增压的汽油的HC和CO排放量仍高于PRF。

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  • 来源
    《Energy & fuels》 |2008年第4期|p.2207-2215|共9页
  • 作者

    Haifeng Liu; Mingfa Yao; Bo Zhang; Zunqing Zheng;

  • 作者单位

    State Key Laboratory of Engines, Tianjin University, Tianjin, 300072, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 TK-;
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