Impact of Blow-By Gas and Endgap Ring Position on the Variations of Particle Emissions in Gasoline Engines

Particulate emission from internal combustion engines is a complex phenomenon that needs to be understood in order to identify its main factors. To this end, it appears necessary to study the impact of unburned gases, called blow-by gases, which are reinjected into the engine intake system. A series...

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Autores principales:	Vincent Berthome, David Chalet, Jean-François Hetet
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	blow-by backflow particles gasoline engine decanter Technology T
Acceso en línea:	https://doaj.org/article/2f91030a02574b30b6a6748fb6482a70
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spelling	oai:doaj.org-article:2f91030a02574b30b6a6748fb6482a702021-11-25T17:25:57ZImpact of Blow-By Gas and Endgap Ring Position on the Variations of Particle Emissions in Gasoline Engines10.3390/en142274921996-1073https://doaj.org/article/2f91030a02574b30b6a6748fb6482a702021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7492https://doaj.org/toc/1996-1073Particulate emission from internal combustion engines is a complex phenomenon that needs to be understood in order to identify its main factors. To this end, it appears necessary to study the impact of unburned gases, called blow-by gases, which are reinjected into the engine intake system. A series of transient tests demonstrate their significant contribution since the particle emissions of spark-ignition engines are 1.5 times higher than those of an engine without blow-by with a standard deviation 1.5 times greater. After analysis, it is found that the decanter is not effective enough to remove completely the oil from the gases. Tests without blow-by gases also have the advantage of having a lower disparity, and therefore of being more repeatable. It appears that the position of the “endgap” formed by the first two rings has a significant impact on the amount of oil transported towards the combustion chamber by the backflow, and consequently on the variation of particle emissions. For this engine and for this transient, 57% of the particulate emissions are related to the equivalence ratio, while 31% are directly related to the ability of the decanter to remove the oil of the blowby gases and 12% of the emissions come from the backflow. The novelty of this work is to relate the particles fluctuation to the position of the endgap ring.Vincent BerthomeDavid ChaletJean-François HetetMDPI AGarticleblow-bybackflowparticlesgasolineenginedecanterTechnologyTENEnergies, Vol 14, Iss 7492, p 7492 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	blow-by backflow particles gasoline engine decanter Technology T
spellingShingle	blow-by backflow particles gasoline engine decanter Technology T Vincent Berthome David Chalet Jean-François Hetet Impact of Blow-By Gas and Endgap Ring Position on the Variations of Particle Emissions in Gasoline Engines
description	Particulate emission from internal combustion engines is a complex phenomenon that needs to be understood in order to identify its main factors. To this end, it appears necessary to study the impact of unburned gases, called blow-by gases, which are reinjected into the engine intake system. A series of transient tests demonstrate their significant contribution since the particle emissions of spark-ignition engines are 1.5 times higher than those of an engine without blow-by with a standard deviation 1.5 times greater. After analysis, it is found that the decanter is not effective enough to remove completely the oil from the gases. Tests without blow-by gases also have the advantage of having a lower disparity, and therefore of being more repeatable. It appears that the position of the “endgap” formed by the first two rings has a significant impact on the amount of oil transported towards the combustion chamber by the backflow, and consequently on the variation of particle emissions. For this engine and for this transient, 57% of the particulate emissions are related to the equivalence ratio, while 31% are directly related to the ability of the decanter to remove the oil of the blowby gases and 12% of the emissions come from the backflow. The novelty of this work is to relate the particles fluctuation to the position of the endgap ring.
format	article
author	Vincent Berthome David Chalet Jean-François Hetet
author_facet	Vincent Berthome David Chalet Jean-François Hetet
author_sort	Vincent Berthome
title	Impact of Blow-By Gas and Endgap Ring Position on the Variations of Particle Emissions in Gasoline Engines
title_short	Impact of Blow-By Gas and Endgap Ring Position on the Variations of Particle Emissions in Gasoline Engines
title_full	Impact of Blow-By Gas and Endgap Ring Position on the Variations of Particle Emissions in Gasoline Engines
title_fullStr	Impact of Blow-By Gas and Endgap Ring Position on the Variations of Particle Emissions in Gasoline Engines
title_full_unstemmed	Impact of Blow-By Gas and Endgap Ring Position on the Variations of Particle Emissions in Gasoline Engines
title_sort	impact of blow-by gas and endgap ring position on the variations of particle emissions in gasoline engines
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2f91030a02574b30b6a6748fb6482a70
work_keys_str_mv	AT vincentberthome impactofblowbygasandendgapringpositiononthevariationsofparticleemissionsingasolineengines AT davidchalet impactofblowbygasandendgapringpositiononthevariationsofparticleemissionsingasolineengines AT jeanfrancoishetet impactofblowbygasandendgapringpositiononthevariationsofparticleemissionsingasolineengines
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Impact of Blow-By Gas and Endgap Ring Position on the Variations of Particle Emissions in Gasoline Engines

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