Study of combustion and emission of a SI engine at various CR fuelled with different ratios of biobutanol/hydrogen fuel |
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| Affiliation: | 1. Department of Aeronautical and Automobile Engineering, Manipal Institute of Technology, Manipal, Udupi, Karnataka, 57104, India;2. Department of Mechanical Engineering, National Institute of Technology Karnataka, Shrinivasnagar, Surathkal, Mangalore, Karnataka, 575025, India;1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;2. Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, Tianjin 300350, China;3. Zhejiang Institute of Tianjin University, Ningbo, Zhejiang, 315201, China;1. Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Tarapacá, Avda. General Velásquez 1775, Arica, Chile;2. University Centre for Research & Development, Department of Mechanical Engineering, Chandigarh University, Mohali, Punjab, 140413, India;3. Department of Chemical Engineering, Lebanese American University, Byblos, Lebanon;4. Centre of Excellence in Transportation Electrification and Energy Storage, Hydro-Québec, 1806, Boul. Lionel-Boulet, Varennes J3X 1S1, Canada;5. School of Chemical and Energy Engineering Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, UTM Johor Bahru, Johor, Malaysia;6. Centre of Hydrogen Energy, Institute of Future Energy, 81310, UTM Johor Bahru, Johor, Malaysia;7. Universidad Autónoma de Chile, Chile;1. Department of Chemical Engineering, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka-shi, Fukuoka, 819-0395, Japan;2. Department of Materials and Life Science, Faculty of Science and Technology, Seikei University, 3-3-1 Kichijoji-kitamachi, Musashino-shi, Tokyo, 180-8633, Japan;3. Research Center for Synchrotron Light Applications, Kyushu University, 6-1 Kasuga-koen, Kasuga-shi, Fukuoka, 816-8580, Japan;1. LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s/n, Porto, 4200-465, Portugal;2. ENEA, Energy Technologies and Renewable Sources Department, Via Anguillarese 301, Rome, 00123, Italy;3. ALiCE – Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s/n, Porto, 4200-465, Portugal;4. ENEA, Fusion and Technology for Nuclear Safety and Security Department, Via E. Fermi 45, Frascati, 00044, Italy;1. Department of Electronics and Communication Engineering, Vel Tech Rangarajan Dr Sagunthala R&D Institute of Science and Technology, Chennai, Tamil Nadu, 600062, India;2. Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India;3. Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India;4. Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamil Nadu, 602105, India;5. Department of Biotechnology, Faculty of Science & Humanities, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India;6. Department of Biosciences, Saveetha School of Engineering, SIMATS, Chennai, Tamil Nadu, 602105, India;7. University Centre for Research and Development & Department of Civil Engineering, Chandigarh University, Gharuan, Mohali, Punjab, 140413, India;8. School of Engineering, Lebanese American University, Byblos, Lebanon |
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| Abstract: | The global requirement is shifting to territorial independence of energy sources, and the introduction of alcohols and biofuels are the primary sectors. Recently agriculture products-based ethanol has replaced a larger portion of gasoline. Butanol is another impressive fuel in the same chain, much better than ethanol in many parameters. Butanol has certain limitations, too, such as higher latent heat and low heating value. Therefore, biobutanol/hydrogen is tested experimentally at various compression ratios (CR) in the present study. Brake thermal efficiency was not significantly changed by CR at 90% butanol, while CR is more impressive with increasing hydrogen. The flame development period was reduced by 34%, while the flame propagation phase was reduced by 29% by increasing CR to 15 and hydrogen to 25%. Peak pressure and heat release rate surged by 12.89% and 12.32% and advanced by 6°CA. The coefficient of variations is also reduced by 21% by increasing CR to 15 and hydrogen to 30%. Higher hydrogen faced combustion difficulties due to increasing stratification and heterogeneity during combustion. Unlikely to trend, Tmax (peak cylinder temperature) and NOx were continuously increased with CR and hydrogen due to increased fuel quantity and larger mass burning before TDC. However, CO and HC emissions were reduced by CR due to increased BTE (brake thermal efficiency) and reduced by hydrogen due to less HC supply. A slight increase in HC and CO was noticed for higher hydrogen due to local heterogeneity and disassociation at high temperatures. |
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| Keywords: | Biobutanol Hydrogen Compression ratio Combustion Emissions SI Engine |
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