Effects of Inlet Pressure and Octane Numbers on Combustion and Emissions of a Homogeneous Charge Compression Ignition (HCCI) Engine
Effects of Inlet Pressure and Octane Numbers on Combustion and Emissions of a Homogeneous Charge Compression Ignition (HCCI) Engine
复制标题
DOI：
10.1021/ef800197b
复制
发表时间：
2008-06
期刊：
影响因子：
5.3
通讯作者：
Haifeng Liu;M. Yao;Bo Zhang;Zunqing Zheng
中科院分区：
文献类型：
--
作者：
Haifeng Liu;M. Yao;Bo Zhang;Zunqing Zheng
试验研究了进气压力(Pin)和辛烷值对均质压燃(HCCI)发动机燃烧和排放的影响。试验在改装的四缸直喷柴油机上进行。实验中使用了四种不同研究辛烷值(RON)的燃料：90-RON、93-RON和97-RON主参考燃料(PRF)和商用汽油94.1-RON(G)。入口压力条件被设置为提供0.1、0.15和0.2兆帕的绝对压力。结果表明，随着进气压力的增加，发动机的起燃提前，缸内压力增大。随着进气压力的增加，重油辛烷值对SOC的影响减弱。但随着进气压力的增加，汽油的SOC与PRF的SOC之差增大。随着进口压力的增加，均质压燃的工作范围扩展到上、下负荷。可达到的最大值..。
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 ...