The effect of combustion type on exhaust emissions and thermal efficiency at partial load operating condition in heavy duty diesel engines

In heavy duty diesel engines, reductions of exhaust emissions and improvement in thermal efficiency have been strongly required from a view point of the prevention of air pollution and global warming. Premixed charge compression ignition (PCCI) can reduce NOx and Smoke simultaneously at partial load...

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Autor principal:	Takuya YAMAGUCHI
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2020
Materias:	heat engine compression ignition engine efficiency fuel economy premixed charge compression ignition diesel combustion Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/f4258bde318148c6ad822203dd98e635
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spelling	oai:doaj.org-article:f4258bde318148c6ad822203dd98e6352021-11-29T05:59:26ZThe effect of combustion type on exhaust emissions and thermal efficiency at partial load operating condition in heavy duty diesel engines2187-974510.1299/mej.19-00626https://doaj.org/article/f4258bde318148c6ad822203dd98e6352020-06-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/7/4/7_19-00626/_pdf/-char/enhttps://doaj.org/toc/2187-9745In heavy duty diesel engines, reductions of exhaust emissions and improvement in thermal efficiency have been strongly required from a view point of the prevention of air pollution and global warming. Premixed charge compression ignition (PCCI) can reduce NOx and Smoke simultaneously at partial load operating conditions in a diesel engine, and this type of combustion has been studied for a long time because it has the potential to reduce exhaust emissions compare to the conventional diesel combustion. Meanwhile, conventional diesel combustion (diffusion combustion) can also achieve low NOx and Smoke level by combining with high rate EGR and high fuel injection pressure in the past decade. In this paper, such conventional diesel combustion is referred to as the low temperature diesel combustion (LTDC). Although each combustion type has the characteristic regarding exhaust emissions and thermal efficiency in a diesel engine, there are few reports which investigated the effect of the difference between PCCI and LTDC on exhaust emissions and thermal efficiency in a modern heavy duty diesel engine. In this study, the experiments conducted to compare the exhaust emissions and thermal efficiency between PCCI and LTDC at brake mean effective pressure = 0.4 MPa in the heavy duty single cylinder diesel engine. For comparison of PCCI and LTDC, swirl ratio and fuel injection pressure that strongly effect on combustion was optimized in each combustion type. As the result of an experiment, it was found that the improvement of NOx by PCCI is large compared to LTDC, although PCCI has the problem to be solved such as the improvement of brake thermal efficiency.Takuya YAMAGUCHIThe Japan Society of Mechanical Engineersarticleheat enginecompression ignition engineefficiencyfuel economypremixed charge compression ignitiondiesel combustionMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 7, Iss 4, Pp 19-00626-19-00626 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	heat engine compression ignition engine efficiency fuel economy premixed charge compression ignition diesel combustion Mechanical engineering and machinery TJ1-1570
spellingShingle	heat engine compression ignition engine efficiency fuel economy premixed charge compression ignition diesel combustion Mechanical engineering and machinery TJ1-1570 Takuya YAMAGUCHI The effect of combustion type on exhaust emissions and thermal efficiency at partial load operating condition in heavy duty diesel engines
description	In heavy duty diesel engines, reductions of exhaust emissions and improvement in thermal efficiency have been strongly required from a view point of the prevention of air pollution and global warming. Premixed charge compression ignition (PCCI) can reduce NOx and Smoke simultaneously at partial load operating conditions in a diesel engine, and this type of combustion has been studied for a long time because it has the potential to reduce exhaust emissions compare to the conventional diesel combustion. Meanwhile, conventional diesel combustion (diffusion combustion) can also achieve low NOx and Smoke level by combining with high rate EGR and high fuel injection pressure in the past decade. In this paper, such conventional diesel combustion is referred to as the low temperature diesel combustion (LTDC). Although each combustion type has the characteristic regarding exhaust emissions and thermal efficiency in a diesel engine, there are few reports which investigated the effect of the difference between PCCI and LTDC on exhaust emissions and thermal efficiency in a modern heavy duty diesel engine. In this study, the experiments conducted to compare the exhaust emissions and thermal efficiency between PCCI and LTDC at brake mean effective pressure = 0.4 MPa in the heavy duty single cylinder diesel engine. For comparison of PCCI and LTDC, swirl ratio and fuel injection pressure that strongly effect on combustion was optimized in each combustion type. As the result of an experiment, it was found that the improvement of NOx by PCCI is large compared to LTDC, although PCCI has the problem to be solved such as the improvement of brake thermal efficiency.
format	article
author	Takuya YAMAGUCHI
author_facet	Takuya YAMAGUCHI
author_sort	Takuya YAMAGUCHI
title	The effect of combustion type on exhaust emissions and thermal efficiency at partial load operating condition in heavy duty diesel engines
title_short	The effect of combustion type on exhaust emissions and thermal efficiency at partial load operating condition in heavy duty diesel engines
title_full	The effect of combustion type on exhaust emissions and thermal efficiency at partial load operating condition in heavy duty diesel engines
title_fullStr	The effect of combustion type on exhaust emissions and thermal efficiency at partial load operating condition in heavy duty diesel engines
title_full_unstemmed	The effect of combustion type on exhaust emissions and thermal efficiency at partial load operating condition in heavy duty diesel engines
title_sort	effect of combustion type on exhaust emissions and thermal efficiency at partial load operating condition in heavy duty diesel engines
publisher	The Japan Society of Mechanical Engineers
publishDate	2020
url	https://doaj.org/article/f4258bde318148c6ad822203dd98e635
work_keys_str_mv	AT takuyayamaguchi theeffectofcombustiontypeonexhaustemissionsandthermalefficiencyatpartialloadoperatingconditioninheavydutydieselengines AT takuyayamaguchi effectofcombustiontypeonexhaustemissionsandthermalefficiencyatpartialloadoperatingconditioninheavydutydieselengines
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The effect of combustion type on exhaust emissions and thermal efficiency at partial load operating condition in heavy duty diesel engines

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