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Impact of hydrogen enrichment on the emission, combustion, and performance of dual-fuel engine fuelled with Karanja biodiesel.

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Title: Impact of hydrogen enrichment on the emission, combustion, and performance of dual-fuel engine fuelled with Karanja biodiesel.
Authors: Katre, Sakhi1 (AUTHOR), Baredar, Prashant1 (AUTHOR), Dwivedi, Gaurav1 (AUTHOR) gdiitr2005@gmail.com, Shukla, Anoop Kumar2 (AUTHOR)
Source: International Journal of Hydrogen Energy. Aug2025, Vol. 161, pN.PAG-N.PAG. 1p.
Subjects: Biodiesel fuels, Alternative fuels, Combustion efficiency, Sustainable transportation, Dual-fuel engines, Greenhouse gas mitigation, Fuel switching, Automotive engineering
Abstract: The present research was carried out to ascertain how a biodiesel blend fuel was affected by hydrogen enrichment levels of 5 %, 10 %, 15 %, and 20 % of the nozzle capacity. Karanja biodiesel reduces unburned carbon monoxide and hydrocarbon emissions by 2.83 % and 3.61 %, respectively in comparison to diesel while increasing the emissions of nitrogen oxide (NO x) by 4.73 %. On the brake thermal efficiency and specific fuel consumption, diesel showed better performance than biodiesel. On addition of 20 % hydrogen, the thermal efficiency rises. The use of hydrogen gas in biodiesel blend also improves combustion properties thus increasing the cylinder pressure, temperature and heat release rate. The analysis of the results shows that carbon monoxide emissions were reduced by 16.25 % for K 20 H 20. Similarly, hydrocarbon emissions were also seen to have reduced. In contrast, nitrogen oxide emissions raised by 23.23 % for K 20 H 20. The use of Karanja biodiesel along with hydrogen enrichment for the diesel engine showed significant reduction in the pollutant with enhanced efficiency. This research enhances our understanding of the nexus between renewable fuels and hydrogen enrichment and engine technology with promising prospects for progress in sustainable mobility and environment. • Pure diesel (D100), Karanja biodiesel blend (K20), and hydrogenated blends (H 5 , H 10 , H 15 , and H 20) were investigated. • Performance, Combustion and Emission characteristics evaluated for different blends. • K 20 H 20 blend showed 16.25 % and 23.23 % reduction in carbon monoxide and nitrogen oxide emissions. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:The present research was carried out to ascertain how a biodiesel blend fuel was affected by hydrogen enrichment levels of 5 %, 10 %, 15 %, and 20 % of the nozzle capacity. Karanja biodiesel reduces unburned carbon monoxide and hydrocarbon emissions by 2.83 % and 3.61 %, respectively in comparison to diesel while increasing the emissions of nitrogen oxide (NO x) by 4.73 %. On the brake thermal efficiency and specific fuel consumption, diesel showed better performance than biodiesel. On addition of 20 % hydrogen, the thermal efficiency rises. The use of hydrogen gas in biodiesel blend also improves combustion properties thus increasing the cylinder pressure, temperature and heat release rate. The analysis of the results shows that carbon monoxide emissions were reduced by 16.25 % for K 20 H 20. Similarly, hydrocarbon emissions were also seen to have reduced. In contrast, nitrogen oxide emissions raised by 23.23 % for K 20 H 20. The use of Karanja biodiesel along with hydrogen enrichment for the diesel engine showed significant reduction in the pollutant with enhanced efficiency. This research enhances our understanding of the nexus between renewable fuels and hydrogen enrichment and engine technology with promising prospects for progress in sustainable mobility and environment. • Pure diesel (D100), Karanja biodiesel blend (K20), and hydrogenated blends (H 5 , H 10 , H 15 , and H 20) were investigated. • Performance, Combustion and Emission characteristics evaluated for different blends. • K 20 H 20 blend showed 16.25 % and 23.23 % reduction in carbon monoxide and nitrogen oxide emissions. [ABSTRACT FROM AUTHOR]
ISSN:03603199
DOI:10.1016/j.ijhydene.2025.150647