Effect of addition of hydrogen and TiO2 in gasoline engine in various exhaust gas recirculation ratio |
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| Affiliation: | 1. Department of Aeronautical Engineering, Sathyabama Institute of Science and Technology, India;2. Department of Mechanical Engineering, Nizwa College of Technology, Muscat, Oman;3. Department of Mechanical Engineering, University of Wyoming, USA;1. College of Science, Northeast Agricultural University, Harbin, Heilongjiang, 150030 PR China;2. Department of Chemistry, College of Science, Northeast Forestry University, Harbin 150040, PR China;1. Department of Mathematics, Karnatak University, Pavate Nagar, Dharwad, 580003, India;2. Department of Computer Science (MCA), KLE Technological University, BVB Campus, Hubli, 580031, India;1. I.E. Tamm Theory Department, P.N. Lebedev Physical Institute of Russian Academy of Sciences, Moscow 119991, 53 Leninskii prosp., Russian Federation;2. Far Eastern Federal University, 8 Suhanova St., Vladivostok 690950, Russia;3. KIT – Karlsruhe Institute of Technology, Institute of Technical Thermodynamics, Engelbert-Arnold-Strasse 4, Building 10.91, D-76131, Karlsruhe, Germany;1. Department of Physics, Siddaganga Institute of Technology, Tumkur, Karnataka, 572103, India;2. Department of Physics, Karnatak University Dharwad, Karnataka, 580003, India;1. Polymers and Functional Materials Division, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, 500007, Telangana, India;2. Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India;3. Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, 500007, Telangana, India |
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| Abstract: | The effects of hydrogen ratios on combustion and emission characteristics of gasoline engine were studied under different exhaust gas recirculation (EGR), ignition timing and ignition pressure. The test performed in a modified gasoline direct ignition engine at different hydrogen ratios of 0%, 5%, 10% and 25%. In addition, the EGR rate set to 0%, 5%, 10% and 20% to study the combustion and emission characteristics. Addition to the different hydrogen fractions, 5% of TiO2 is added to increase the combustion characteristics with reduced emission. Regarding the results of the current study, the engine torque increases by 15% due to the addition of hydrogen in gasoline, while mechanical efficiency is improved by achieving a large throttle opening. At the same time, NOx emission decreased by 62% compared to the unmodified engine due to the influence of EGR, hydrogen ratio and high oxygen concentration TiO2. Moreover, the emission of CO and HC also reduced due to the influence of hydrogen fuel. Additionally, few more tests are taken to monitor the effect of the injection pressure for the hydrogen fuel. Higher injection reports higher effective thermal efficiency at 4 MPa and lower NOx. Reasonable injection pressure results in shorten flame development period. |
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| Keywords: | Hydrogen direct injection Combustion Gasoline engine Emission Exhaust gas recirculation |
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