Influence of biogas mixing parameters on the combustion and emission characteristics of diesel RCCI engine

Reactivity-controlled compression ignition (RCCI) combustion involves in-cylinder fuels blending of varying reaction rates to enhance the combustion magnitude by stratification. Nitrogen oxides (NOx) and soot control techniques increase carbon monoxide (CO) and unburned-hydrocarbon (UHC) emissions i...

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Autores principales:	Mior A. Said, Ibrahim B. Dalha, Zainal A. Abdul Karim, Mohammed El-Adawy
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	RCCI combustion Port mixing distance Port swirl ratio Biogas Biogas injection pressure Emissions trade-off Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/48fe5f994da54a0c9dfdd8c28b270019
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spelling	oai:doaj.org-article:48fe5f994da54a0c9dfdd8c28b2700192021-11-18T04:45:26ZInfluence of biogas mixing parameters on the combustion and emission characteristics of diesel RCCI engine1110-016810.1016/j.aej.2021.06.052https://doaj.org/article/48fe5f994da54a0c9dfdd8c28b2700192022-02-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1110016821004154https://doaj.org/toc/1110-0168Reactivity-controlled compression ignition (RCCI) combustion involves in-cylinder fuels blending of varying reaction rates to enhance the combustion magnitude by stratification. Nitrogen oxides (NOx) and soot control techniques increase carbon monoxide (CO) and unburned-hydrocarbon (UHC) emissions in RCCI at low loads. A modified injection and proper Biogas mixing may reduce further CO, UHC, and trade-off with other emissions. The effects of loads (5.5 and 6.5 bar IMEP), port mixing distances (0–100%), swirl ratios (0–80%), and biogas pressures (1–4 bar) on the mixture distribution and emissions were evaluated experimentally, at 1600 rpm. Exergy analysis and combustion kinetics were applied for more understanding of emissions attributes. The process at 5.5 bar IMEP improves mixture homogeneity, uniform fuel stratification and reduces emissions across the mixing intervals. Injection at valve reduces CO, UHC, and NOx emissions by 11.54%, 9.38%, and 33.75% at 5.5 bar IMEP. Operating at the valve, 80% swirl ratio and 1 bar pressure further reduce the UHC (115.77 ppm), NOx (3.89 ppm), and PM (5.29 ppm) emissions by 1.94%, 49.94%, and 77.42%, than normal airflow. Thus, injecting biogas of low pressure at the valve amidst a stream of swirling air contributes to trade-off reduction techniques at low load.Mior A. SaidIbrahim B. DalhaZainal A. Abdul KarimMohammed El-AdawyElsevierarticleRCCI combustionPort mixing distancePort swirl ratioBiogasBiogas injection pressureEmissions trade-offEngineering (General). Civil engineering (General)TA1-2040ENAlexandria Engineering Journal, Vol 61, Iss 2, Pp 1479-1497 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	RCCI combustion Port mixing distance Port swirl ratio Biogas Biogas injection pressure Emissions trade-off Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	RCCI combustion Port mixing distance Port swirl ratio Biogas Biogas injection pressure Emissions trade-off Engineering (General). Civil engineering (General) TA1-2040 Mior A. Said Ibrahim B. Dalha Zainal A. Abdul Karim Mohammed El-Adawy Influence of biogas mixing parameters on the combustion and emission characteristics of diesel RCCI engine
description	Reactivity-controlled compression ignition (RCCI) combustion involves in-cylinder fuels blending of varying reaction rates to enhance the combustion magnitude by stratification. Nitrogen oxides (NOx) and soot control techniques increase carbon monoxide (CO) and unburned-hydrocarbon (UHC) emissions in RCCI at low loads. A modified injection and proper Biogas mixing may reduce further CO, UHC, and trade-off with other emissions. The effects of loads (5.5 and 6.5 bar IMEP), port mixing distances (0–100%), swirl ratios (0–80%), and biogas pressures (1–4 bar) on the mixture distribution and emissions were evaluated experimentally, at 1600 rpm. Exergy analysis and combustion kinetics were applied for more understanding of emissions attributes. The process at 5.5 bar IMEP improves mixture homogeneity, uniform fuel stratification and reduces emissions across the mixing intervals. Injection at valve reduces CO, UHC, and NOx emissions by 11.54%, 9.38%, and 33.75% at 5.5 bar IMEP. Operating at the valve, 80% swirl ratio and 1 bar pressure further reduce the UHC (115.77 ppm), NOx (3.89 ppm), and PM (5.29 ppm) emissions by 1.94%, 49.94%, and 77.42%, than normal airflow. Thus, injecting biogas of low pressure at the valve amidst a stream of swirling air contributes to trade-off reduction techniques at low load.
format	article
author	Mior A. Said Ibrahim B. Dalha Zainal A. Abdul Karim Mohammed El-Adawy
author_facet	Mior A. Said Ibrahim B. Dalha Zainal A. Abdul Karim Mohammed El-Adawy
author_sort	Mior A. Said
title	Influence of biogas mixing parameters on the combustion and emission characteristics of diesel RCCI engine
title_short	Influence of biogas mixing parameters on the combustion and emission characteristics of diesel RCCI engine
title_full	Influence of biogas mixing parameters on the combustion and emission characteristics of diesel RCCI engine
title_fullStr	Influence of biogas mixing parameters on the combustion and emission characteristics of diesel RCCI engine
title_full_unstemmed	Influence of biogas mixing parameters on the combustion and emission characteristics of diesel RCCI engine
title_sort	influence of biogas mixing parameters on the combustion and emission characteristics of diesel rcci engine
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/48fe5f994da54a0c9dfdd8c28b270019
work_keys_str_mv	AT miorasaid influenceofbiogasmixingparametersonthecombustionandemissioncharacteristicsofdieselrcciengine AT ibrahimbdalha influenceofbiogasmixingparametersonthecombustionandemissioncharacteristicsofdieselrcciengine AT zainalaabdulkarim influenceofbiogasmixingparametersonthecombustionandemissioncharacteristicsofdieselrcciengine AT mohammedeladawy influenceofbiogasmixingparametersonthecombustionandemissioncharacteristicsofdieselrcciengine
_version_	1718425037379207168

Influence of biogas mixing parameters on the combustion and emission characteristics of diesel RCCI engine

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