Monitoring Exhaust Emissions of A Direct Injection Diesel Engine Fueled With Linseed Oil Biodiesel – Hydrogen Dual Fuel
K. Udaya Sri1, B S N Murthy2, N. Mohan Rao3

1K. Udaya Sri*, Department of Mechanical Engineering, KG Reddy College of Engineering and Technology, Moinabad, (Telangana), India.
2B S N Murthy, Department of Mechanical Engineering, Gandhi Institute of Technology and Management, GITAM University, Vishakapatnam, (Andhra Pradesh), India.
3N. Mohan Rao, Department of Mechanical Engineering, Jawaharlal Nehru Technological University, Kakinada, (Andhra Pradesh), India.

Manuscript received on April 09, 2021. | Revised Manuscript received on April 14, 2021. | Manuscript published on April 30, 2021. | PP: 42-49 | Volume-10 Issue-6, April 2021 | Retrieval Number: 100.1/ijitee.F87650410621| DOI: 10.35940/ijitee.F8765.0410621
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Abstract: This study presents an experimental and analytical investigation on the effects of using methyl ester of linseed oil (MELO)-diesel blend of B10, B20, and B30 with hydrogen injection of 5%, 10%, and 15% in a VCR (Variable Compression Ratio) diesel engine, operated with the compression ratios (CRs) of 15, 16, 17, and 18 on DFM (duel fuel mode). This study also gives emphasis on the optimized emissions of CO, CO2, NO, and smoke, when the engine was operated with MELO-diesel blends, and hydrogen injections with the variation in engine load, crank angle (CA), using response surface methodology (RSM) with the help of MINITAB programming. During the analysis it was observed that the emissions of CO, CO2, O2, NO, and smoke were found to be a function of biodiesel blends, compression ratios, load, and percentage of hydrogen injection. The research results report that, the dual fuel mode of diesel MELO 20% blend with hydrogen injection of about 10% gave optimized results in terms of performance and exhaust emissions, while the optimized CR was 17. The engine was smoothly operated with B20-H10-CR17 over lower emissions compared to diesel, throughout the load spectrum. 
Keywords: Diesel Engine, Methyl ester of linseed oil (MELO), Response surface methodology (RSM), Hydrogen, Dual fuel.