Effects of H2 and CO enrichment on the combustion, emission and performance characteristics of spark ignition natural gas engine
Effects of H2 and CO enrichment on the combustion, emission and performance characteristics of spark ignition natural gas engine
复制标题
H2和CO富集对火花点火式天然气发动机燃烧、排放和性能特性的影响
DOI：
10.1016/j.fuel.2016.06.077
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发表时间：
2016-11
期刊：
影响因子：
7.4
通讯作者：
Zhen Huang
中科院分区：
文献类型：
--
作者：
Zhuoyao He;Zhan Gao;Lei Zhu;Shujing Li;Ang Li;Wugao Zhang;Zhen Huang
燃料重整是改善内燃机性能的一种有吸引力的途径。重整气的主要成分是H2、CO、co2和N2。对重整气中各组分的详细了解对于判断或更好地利用重整气和重整技术是必不可少的。本文研究了重整气中主要可燃物h2o和CO对稀燃火花点火天然气发动机性能的影响。结果表明，添加h2o和CO可以改善缸内燃烧，使发动机运行平稳，提高发动机热效率。随着h2o2和CO的加入，缸内压力峰值和放热速率峰值增加，火焰发展持续时间和快速燃烧持续时间以及CovIMEP降低。然而，与H2相比，CO的效率较低。h2o对发动机THC排放的影响不显著，而CO的加入由于淬火和缝隙效应，有显著增加发动机THC排放的趋势。由于缸内温度升高，h2h和CO均有加重发动机nox排放的趋势，而h2h的影响更为明显。层流火焰速度模拟表明，h2和CO的加入提高了O、H和OH自由基浓度，从而改善了火焰的传播和燃烧过程，从而提高了燃料-空气混合物的层流火焰速度。相比之下，添加h2o2的层流火焰速度高于添加CO的层流火焰速度。本文的研究表明，重整气中的h2h和CO对改善发动机燃烧和有效热效率都有一定的作用，而h2h的作用更大。
Fuel reforming is an attractive way for improving the performances of internal combustion engine. The primary components of the reformed gas are H2, CO, CO2and N2. A detailed knowledge of each component in reformed gas is essential for judging or making better use of the reformed gas as well as reforming technologies. In this paper, the influences of the major combustibles of the reformed gas, H2and CO, on the performances of a lean burn spark ignition natural gas engine are investigated. Results indicate that addition of H2and CO could improve in-cylinder combustion, smooth engine operation and increase engine thermal efficiency. With the addition of H2and CO, both the peaks of in-cylinder pressure and heat release rate increase, flame development duration and rapid combustion duration as well as CovIMEP decrease. However, CO is less effective compared with H2. The influence of H2on engine THC emission is insignificant while addition of CO tends to increase engine CO emission remarkably owing to the quenching and crevice effect. Both H2and CO tend to worsen engine NOxemission due to the increased in-cylinder temperature while the effect of H2is more distinct. The simulation of laminar flame speed manifests that addition of H2and CO increase O, H and OH radical concentration and hence improve the flame propagation and the combustion process, resulting in improved laminar flame speed of the fuel-air mixtures. In compare, H2addition leads to higher laminar flame speed than CO addition does. The whole investigation of this paper implies that both H2and CO in the reformed gas are effective in improving engine combustion and effective thermal efficiency while H2is more effective.
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影响因子：
1.2
作者：
T. Alger;B. Mangold
通讯作者：
T. Alger;B. Mangold
DOI：
10.4271/2007-01-0219
发表时间：
2007-04
期刊：
--
影响因子：
--
作者：
J. Waldman;Dennis G. Nitz;Tanet Aroonsrisopon;D. Foster;M. Iida
通讯作者：
J. Waldman;Dennis G. Nitz;Tanet Aroonsrisopon;D. Foster;M. Iida
DOI：
10.4271/982483
发表时间：
1998-10
期刊：
SAE transactions
影响因子：
--
作者：
J. Willand;R. Nieberding;G. Vent;Christian Enderle
通讯作者：
J. Willand;R. Nieberding;G. Vent;Christian Enderle
影响因子：
9
作者：
F. Hagos;A. A. Aziz-A.;S. Sulaiman
通讯作者：
F. Hagos;A. A. Aziz-A.;S. Sulaiman
影响因子：
7.2
作者：
D. Yap;S. Peucheret;A. Megaritis;M. Wyszyński;Hongming Xu
通讯作者：
D. Yap;S. Peucheret;A. Megaritis;M. Wyszyński;Hongming Xu