Ramachandran, Elumalai and Krishnaiah, Ravi and Perumal Venkatesan, Elumalai and Medapati, Sreenivasa Reddy and Sabarish, Rajagopalan and Khan, Sher Afghan and Asif, Mohammad and Linul, Emanoil (2023) Experimental studies to reduce usage of fossil fuels and improve green fuels by adopting hydrogen−ammonia−biodiesel as trinary fuel for RCCI engine. ACS omega, 9 (1). A-J. E-ISSN 2470-1343
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Abstract
This study investigates the feasibility of hydrogen addition to achieve lower emissions and higher thermal efficiency in an ammonia−biodiesel-fueled reactivity-controlled compression ignition (RCCI) engine. A single-cylinder light-duty water-cooled compression ignition (CI) engine was adapted to run in RCCI combustion with port-injected ammonia and hydrogen as low reactive fuel (LRF) and direct-injected algal biodiesel as high reactive fuel (HRF). In our earlier study, the ammonia substitution ratio (ASR) was optimized as 40%. To optimize fuel and engine settings, hydrogen is added in quantities ranging from 5 to 20% by energy share. The combustion, performance, and emission characteristics were investigated for the trinary fuel operation. The result shows that the 20% hydrogen premixing with 40% ammonia−biodiesel RCCI operation increased the peak cylinder pressure (CP), peak heat release rate (HRR), and cumulative heat release rate (CHRR) by 15.12, 25.15, and 26.68%, respectively. Ignition delay (ID) and combustion duration (CD) were decreased by 15.53 and 11.24%, respectively. The combustion phasing angle was advanced by 4 °CA. The brake thermal efficiency (BTE) was improved by 15.49%, and brake-specific energy consumption (BSEC) was reduced by 21.92%. While the nitrogen oxide (NOx) level was significantly increased by about 31.82%, the hydrocarbon (HC), carbon monoxide (CO), smoke, and exhaust gas temperature (EGT) were reduced by 24.53, 28.16, 25.82, and 17.47% as compared to the optimized ASR40% combustion.
| Item Type: | Article (Journal) |
|---|---|
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ163.26 Energy conservation |
| Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): | Kulliyyah of Engineering Kulliyyah of Engineering > Department of Mechanical Engineering |
| Depositing User: | Prof. Dr. Sher Afghan Khan |
| Date Deposited: | 05 Jan 2024 10:39 |
| Last Modified: | 16 May 2024 12:30 |
| URI: | http://irep.iium.edu.my/id/eprint/109637 |
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