A Rapid Compression Machine Study of 2-Phenylethanol Autoignition at Low-To-Intermediate Temperatures

To meet the increasing anti-knocking quality demand of boosted spark-ignition engines, fuel additives are considered an effective approach to tailor fuel properties for satisfying the performance requirements. Thus, screening/developing bio-derived fuel additives that are best-suited for advanced sp...

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Autores principales:	Ruozhou Fang, Chih-Jen Sung
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	2-phenylethanol autoignition low temperature chemistry rapid compression machine Technology T
Acceso en línea:	https://doaj.org/article/4adaf158dc5a4837be76f4921a0e4ea9
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id	oai:doaj.org-article:4adaf158dc5a4837be76f4921a0e4ea9
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spelling	oai:doaj.org-article:4adaf158dc5a4837be76f4921a0e4ea92021-11-25T17:28:08ZA Rapid Compression Machine Study of 2-Phenylethanol Autoignition at Low-To-Intermediate Temperatures10.3390/en142277081996-1073https://doaj.org/article/4adaf158dc5a4837be76f4921a0e4ea92021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7708https://doaj.org/toc/1996-1073To meet the increasing anti-knocking quality demand of boosted spark-ignition engines, fuel additives are considered an effective approach to tailor fuel properties for satisfying the performance requirements. Thus, screening/developing bio-derived fuel additives that are best-suited for advanced spark-ignition engines has become a significant task. 2-Phenylethanol (2-PE) is an attractive candidate that features high research octane number, high octane sensitivity, low vapor pressure, and high energy density. Recognizing that the low temperature autoignition chemistry of 2-PE is not well understood and the need for fundamental experimental data at engine-relevant conditions, rapid compression machine (RCM) experiments are therefore conducted herein to measure ignition delay times (IDTs) of 2-PE in air over a wide range of conditions to fill this fundamental void. These newly acquired IDT data at low-to-intermediated temperatures, equivalence ratios of 0.35–1.5, and compressed pressures of 10–40 bar are then used to validate the 2-PE model developed by Shankar et al. (2017). It is found that this literature model greatly overpredicts the current RCM data. The comparison of experimental and simulated results also provides insights into 2-PE autoignition behaviors at varying conditions. Further chemical kinetic analyses demonstrate that the absence of the O<sub>2</sub>-addition pathway of β-<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mover><mi mathvariant="normal">R</mi><mo>.</mo></mover></semantics></math></inline-formula> radical in the 2-PE model of Shankar et al. (2017) could account for the model discrepancies observed at low-to-intermediated temperatures.Ruozhou FangChih-Jen SungMDPI AGarticle2-phenylethanolautoignitionlow temperature chemistryrapid compression machineTechnologyTENEnergies, Vol 14, Iss 7708, p 7708 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	2-phenylethanol autoignition low temperature chemistry rapid compression machine Technology T
spellingShingle	2-phenylethanol autoignition low temperature chemistry rapid compression machine Technology T Ruozhou Fang Chih-Jen Sung A Rapid Compression Machine Study of 2-Phenylethanol Autoignition at Low-To-Intermediate Temperatures
description	To meet the increasing anti-knocking quality demand of boosted spark-ignition engines, fuel additives are considered an effective approach to tailor fuel properties for satisfying the performance requirements. Thus, screening/developing bio-derived fuel additives that are best-suited for advanced spark-ignition engines has become a significant task. 2-Phenylethanol (2-PE) is an attractive candidate that features high research octane number, high octane sensitivity, low vapor pressure, and high energy density. Recognizing that the low temperature autoignition chemistry of 2-PE is not well understood and the need for fundamental experimental data at engine-relevant conditions, rapid compression machine (RCM) experiments are therefore conducted herein to measure ignition delay times (IDTs) of 2-PE in air over a wide range of conditions to fill this fundamental void. These newly acquired IDT data at low-to-intermediated temperatures, equivalence ratios of 0.35–1.5, and compressed pressures of 10–40 bar are then used to validate the 2-PE model developed by Shankar et al. (2017). It is found that this literature model greatly overpredicts the current RCM data. The comparison of experimental and simulated results also provides insights into 2-PE autoignition behaviors at varying conditions. Further chemical kinetic analyses demonstrate that the absence of the O<sub>2</sub>-addition pathway of β-<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mover><mi mathvariant="normal">R</mi><mo>.</mo></mover></semantics></math></inline-formula> radical in the 2-PE model of Shankar et al. (2017) could account for the model discrepancies observed at low-to-intermediated temperatures.
format	article
author	Ruozhou Fang Chih-Jen Sung
author_facet	Ruozhou Fang Chih-Jen Sung
author_sort	Ruozhou Fang
title	A Rapid Compression Machine Study of 2-Phenylethanol Autoignition at Low-To-Intermediate Temperatures
title_short	A Rapid Compression Machine Study of 2-Phenylethanol Autoignition at Low-To-Intermediate Temperatures
title_full	A Rapid Compression Machine Study of 2-Phenylethanol Autoignition at Low-To-Intermediate Temperatures
title_fullStr	A Rapid Compression Machine Study of 2-Phenylethanol Autoignition at Low-To-Intermediate Temperatures
title_full_unstemmed	A Rapid Compression Machine Study of 2-Phenylethanol Autoignition at Low-To-Intermediate Temperatures
title_sort	rapid compression machine study of 2-phenylethanol autoignition at low-to-intermediate temperatures
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4adaf158dc5a4837be76f4921a0e4ea9
work_keys_str_mv	AT ruozhoufang arapidcompressionmachinestudyof2phenylethanolautoignitionatlowtointermediatetemperatures AT chihjensung arapidcompressionmachinestudyof2phenylethanolautoignitionatlowtointermediatetemperatures AT ruozhoufang rapidcompressionmachinestudyof2phenylethanolautoignitionatlowtointermediatetemperatures AT chihjensung rapidcompressionmachinestudyof2phenylethanolautoignitionatlowtointermediatetemperatures
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A Rapid Compression Machine Study of 2-Phenylethanol Autoignition at Low-To-Intermediate Temperatures

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