Abstract
Hydrogen additives to Simarouba glauca vegetable oil (SO) are a common method for addressing the difficulties in combustion caused by SO’s poor physical qualities. This research intends to examine parameters such as performance, emission, and combustion characteristics when hydrogen is used as a direct/indirect addition in a SO-fuelled compression ignition (CI) engine. Hydrogen was directly introduced along with intake air until the knocking limit. Experiment was conducted at different load conduction with SO. Through the hydrotreatment process, hydrogen was used in a roundabout way to convert SO to green diesel. Hydrotreated Simarouba vegetable oil (HTSO) enhanced brake thermal efficiency by 23% at full load, whereas direct hydrogen induction improved it by 9% at knock limit. Hydrogen induction resulted in higher NOx emissions than HTSO, at the expense of a slight rise in smoke emissions. Addition of hydrogen lowered both HC and CO emissions directly and indirectly.
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Data availability
All the research data used in the study are available in the manuscript.
Abbreviations
- CI:
-
Compression ignition
- CO:
-
Carbon monoxide
- EGR:
-
Exhaust gas recirculation
- HVO:
-
Hydrotreated vegetable oil
- HC:
-
Hydrocarbon
- HTSO:
-
Hydrotreatment Simarouba oil (green diesel)
- SO:
-
Simarouba glauca Oil
- SOC:
-
Start of combustion
- NOx:
-
Oxide of nitrogen
- BTE:
-
Brake thermal engineering
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Pelluru suresh contributed to answering the reviewers’ comments. The final manuscript was verified by Dr. Mathanraj V. Further, all authors read and approved the final manuscript for submission.
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Highlights
• Simarouba oil with direct and indirect (Green Diesel) Hydrogen induction were investigated as alternative fuel.
• Simarouba green diesel is converted by hydrotreatment process from Simarouba glauca oil and which is investigated.
• Simarouba oil is a reasonable alternative fuel for diesel engines.
• Hydrogen enrichment in inlet manifold changes the engine emissions for both fuels.
• The presence of hydrogen leaves unchanged the auto-ignition delay of the base fuels.
• Operating characteristics of test fuels were evaluated experimentally.
• H2 enrichment is a promising alternative for diesel engines which reduced pollution in atmosphere.
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Suresh, P., Vijayaragavan, M. Experimental investigation on use of hydrotreated Simarouba oil (green diesel) and hydrogen gas in a dual-fuel CI engine. Environ Sci Pollut Res 30, 36033–36043 (2023). https://doi.org/10.1007/s11356-022-24829-1
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DOI: https://doi.org/10.1007/s11356-022-24829-1