Influences of isomeric butanol addition on anti-knock tendency of primary reference fuel and toluene primary reference fuel gasoline surrogates
Influences of isomeric butanol addition on anti-knock tendency of primary reference fuel and toluene primary reference fuel gasoline surrogates
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异构丁醇添加对主要参考燃料和甲苯主要参考燃料汽油替代品抗爆倾向的影响
DOI：
10.1177/1468087419850704
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发表时间：
2021-01
影响因子：
2.5
通讯作者：
Zhen Huang
中科院分区：
文献类型：
--
作者：
Yunchu Fan;Yaozong Duan;Dong Han;Xinqi Qiao;Zhen Huang
在一台单缸协同燃料研究发动机上研究了丁醇异构体与两种汽油代用燃料（一级参比燃料和甲苯一级参比燃料）的混合物的抗爆性。考察了丁醇分子结构（正丁醇、异丁醇、仲丁醇和叔丁醇）和丁醇添加量对燃料研究法辛烷值的影响。实验结果表明，向PRF 80或TPRF 80中添加丁醇可以增加混合燃料的研究辛烷值，并且混合燃料的研究辛烷值与丁醇添加摩尔百分比的线性度高于与丁醇添加体积百分比的线性度。丁醇异构体的研究辛烷值提高效果随燃料组成的变化而变化，对于一级参比燃料，丁醇异构体的研究辛烷值提高效果为异丁醇>仲丁醇>正丁醇>叔丁醇;对于甲苯一级参比燃料，丁醇异构体的研究辛烷值提高效果为异丁醇>仲丁醇>叔丁醇>正丁醇。此外，丁醇/主要参考燃料混合物比丁醇/甲苯主要参考燃料混合物表现出更高的研究辛烷值。此后，我们试图阐明所观察到的不同丁醇/汽油替代混合物的抗爆震质量的基本燃料燃烧动力学。结果表明，在770 K、2 MPa的热力学条件下，混合燃料的研究辛烷值与计算的着火延迟时间的相关性最好，在此条件下的自燃反应敏感性分析表明，丁醇异构体被OH自由基抽氢反应抑制了燃料的反应性，因此当将丁醇加入到汽油替代物中时提高了燃料研究法辛烷值。与丁醇/基准燃料混合物相比，正庚烷的正敏感反应具有更高的重要性，而甲苯基准燃料/丁醇混合物对丁醇和异辛烷敏感反应的抑制作用降低，从而导致甲苯基准燃料/丁醇混合物的研究辛烷值低于丁醇/基准燃料混合物。
The anti-knock tendency of blends of butanol isomers and two gasoline surrogates (primary reference fuels and toluene primary reference fuels) was studied on a single-cylinder cooperative fuel research engine. The effects of butanol molecular structure (n-butanol, i-butanol, s-butanol and t-butanol) and butanol addition percentage on fuel research octane numbers were investigated. The experimental results revealed that butanol addition to either PRF80 or TPRF80 increased research octane numbers, and the research octane numbers of fuel blends showed higher linearity with the molar percentage than with the volumetric percentage of butanol addition. Furthermore, the research octane number boosting effects of butanol isomers were observed to change with the fuel compositions, that is, i-butanol >s-butanol >n-butanol >t-butanol for primary reference fuels and i-butanol >s-butanol >t-butanol >n-butanol for toluene primary reference fuels. In addition, butanol/primary reference fuel blends exhibited higher research octane numbers than butanol/toluene primary reference fuel blends. We thereafter tried to elucidate the underlying fuel combustion kinetics for the observed anti-knock quality of different butanol/gasoline surrogate blends. It was found that the measured research octane numbers of fuel blends showed the best correlation with the calculated ignition delay times at the thermodynamic condition of 770 K and 2 MPa, and the reaction sensitivity analysis in auto-ignition at this condition revealed that the H-abstraction reactions of butanol isomers by OH radical suppressed fuel reactivity, thus elevating the fuel research octane numbers when butanol was added to the gasoline surrogates. Compared with the butanol/primary reference fuel blends, the positive sensitive reactions related to n-heptane were of higher importance, while the inhibitive effects of sensitive reactions related to butanol and iso-octane decreased for the toluene primary reference fuel/butanol blends, thus leading to lower research octane numbers of the toluene primary reference fuel/butanol blends than those of the butanol/primary reference fuel blends.
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DOI：
--
发表时间：
2007
期刊：
--
影响因子：
--
作者：
M. Chaos;Z. Zhao;A. Kazakov;P. Gokulakrishnan;M. Angioletti;F. Dryer
通讯作者：
M. Chaos;Z. Zhao;A. Kazakov;P. Gokulakrishnan;M. Angioletti;F. Dryer
影响因子：
3.4
作者：
Harvey, Benjamin G.;Meylemans, Heather A.
通讯作者：
Meylemans, Heather A.
DOI：
10.4271/902135
发表时间：
1990-10
期刊：
SAE transactions
影响因子：
--
作者：
G. Konig;C. Sheppard
通讯作者：
G. Konig;C. Sheppard
影响因子：
4.4
作者：
Morgan, Neal;Smallbone, Andrew;Kalghatgi, Gautam
通讯作者：
Kalghatgi, Gautam
影响因子：
5.3
作者：
Christensen, Earl;Yanowitz, Janet;McCormick, Robert L.
通讯作者：
McCormick, Robert L.