Effect of air preheating, exhaust gas re-circulation and hydrogen enrichment on biodiesel/methane dual fuel engine

An experimental study was carried out to investigate the effect of intake air pre-heating, exhaust gas re-circulation, and hydrogen enrichment on performance, combustion, and emission characteristics of CH4/waste cooking oil biodiesel fuelled compression ignition engine in dual fuel mode. Methyl est...

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Main Authors: Mohanasundaram Kavin Robert, Govindan Nagarajan
Format: Article
Language:English
Published: VINCA Institute of Nuclear Sciences 2021-01-01
Series:Thermal Science
Subjects:
ch4
Online Access:http://www.doiserbia.nb.rs/img/doi/0354-9836/2021/0354-98362000146M.pdf
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spelling doaj-33f555c6cd4847b38c65e3778d98659e2021-04-09T10:16:31ZengVINCA Institute of Nuclear SciencesThermal Science0354-98362334-71632021-01-01251 Part B44946410.2298/TSCI191024146M0354-98362000146MEffect of air preheating, exhaust gas re-circulation and hydrogen enrichment on biodiesel/methane dual fuel engineMohanasundaram Kavin Robert0Govindan Nagarajan1Internal Combustion Engineering Division, Department of Mechanical Engineering, College of Engineering, Anna University, Chennai, IndiaInternal Combustion Engineering Division, Department of Mechanical Engineering, College of Engineering, Anna University, Chennai, IndiaAn experimental study was carried out to investigate the effect of intake air pre-heating, exhaust gas re-circulation, and hydrogen enrichment on performance, combustion, and emission characteristics of CH4/waste cooking oil biodiesel fuelled compression ignition engine in dual fuel mode. Methyl ester derived from waste cooking oil was used as a pilot fuel which was directly injected into the combustion chamber at the end of the compression stroke. The CH4/hydrogen-enriched methane was injected as the main fuel in the intake port during the suction stroke using a low pressure electronic port fuel injector which is controlled by an electronic control unit. The experiments were conducted at a constant speed and at the maximum load. Experimental results indicated that the increase in energy share of gaseous fuel extends the ignition delay. With air preheating the thermal efficiency increased to 49% and 55% of CH4 and hydrogen-enriched CH4 energy share, respectively. The CO and HC emissions were higher in CH4 combustion with biodiesel when compared to the conventional diesel operation at full load and a reduction in CO and HC was observed with air preheating. Lower NOx were observed with gaseous fuel combustion and it further reduced with exhaust gas re-circulation but NOx increased by preheating the intake air. Improvement in thermal efficiency with a reduction in HC and CO was observed with hydrogen-enriched CH4.http://www.doiserbia.nb.rs/img/doi/0354-9836/2021/0354-98362000146M.pdfhydrogen enriched ch4ch4exhaust gas re-circulationair pre-heatingpremixed combustionperformancecombustionemissions
collection DOAJ
language English
format Article
sources DOAJ
author Mohanasundaram Kavin Robert
Govindan Nagarajan
spellingShingle Mohanasundaram Kavin Robert
Govindan Nagarajan
Effect of air preheating, exhaust gas re-circulation and hydrogen enrichment on biodiesel/methane dual fuel engine
Thermal Science
hydrogen enriched ch4
ch4
exhaust gas re-circulation
air pre-heating
premixed combustion
performance
combustion
emissions
author_facet Mohanasundaram Kavin Robert
Govindan Nagarajan
author_sort Mohanasundaram Kavin Robert
title Effect of air preheating, exhaust gas re-circulation and hydrogen enrichment on biodiesel/methane dual fuel engine
title_short Effect of air preheating, exhaust gas re-circulation and hydrogen enrichment on biodiesel/methane dual fuel engine
title_full Effect of air preheating, exhaust gas re-circulation and hydrogen enrichment on biodiesel/methane dual fuel engine
title_fullStr Effect of air preheating, exhaust gas re-circulation and hydrogen enrichment on biodiesel/methane dual fuel engine
title_full_unstemmed Effect of air preheating, exhaust gas re-circulation and hydrogen enrichment on biodiesel/methane dual fuel engine
title_sort effect of air preheating, exhaust gas re-circulation and hydrogen enrichment on biodiesel/methane dual fuel engine
publisher VINCA Institute of Nuclear Sciences
series Thermal Science
issn 0354-9836
2334-7163
publishDate 2021-01-01
description An experimental study was carried out to investigate the effect of intake air pre-heating, exhaust gas re-circulation, and hydrogen enrichment on performance, combustion, and emission characteristics of CH4/waste cooking oil biodiesel fuelled compression ignition engine in dual fuel mode. Methyl ester derived from waste cooking oil was used as a pilot fuel which was directly injected into the combustion chamber at the end of the compression stroke. The CH4/hydrogen-enriched methane was injected as the main fuel in the intake port during the suction stroke using a low pressure electronic port fuel injector which is controlled by an electronic control unit. The experiments were conducted at a constant speed and at the maximum load. Experimental results indicated that the increase in energy share of gaseous fuel extends the ignition delay. With air preheating the thermal efficiency increased to 49% and 55% of CH4 and hydrogen-enriched CH4 energy share, respectively. The CO and HC emissions were higher in CH4 combustion with biodiesel when compared to the conventional diesel operation at full load and a reduction in CO and HC was observed with air preheating. Lower NOx were observed with gaseous fuel combustion and it further reduced with exhaust gas re-circulation but NOx increased by preheating the intake air. Improvement in thermal efficiency with a reduction in HC and CO was observed with hydrogen-enriched CH4.
topic hydrogen enriched ch4
ch4
exhaust gas re-circulation
air pre-heating
premixed combustion
performance
combustion
emissions
url http://www.doiserbia.nb.rs/img/doi/0354-9836/2021/0354-98362000146M.pdf
work_keys_str_mv AT mohanasundaramkavinrobert effectofairpreheatingexhaustgasrecirculationandhydrogenenrichmentonbiodieselmethanedualfuelengine
AT govindannagarajan effectofairpreheatingexhaustgasrecirculationandhydrogenenrichmentonbiodieselmethanedualfuelengine
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