Comparative engine performance and emission analysis of CNG and gasoline in a retrofitted car engine |
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| Authors: | M.I. Jahirul H.H. Masjuki R. Saidur M.A. Kalam M.H. Jayed M.A. Wazed |
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| Affiliation: | 1. School of Engineering and Built Environment, CQUniversity, Rockhampton, QLD 4702, Australia;2. Department of Mechanical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;3. Department of Engineering Design and Manufacture, University of Malaya, 50603 Kuala Lumpur, Malaysia;4. Department of Mechanical Engineering, Chittagong University of Engineering & Technology, 4349 Chittagong, Bangladesh;1. Department of Mechanical Engineering, B. V. B. College of Engineering and Technology, Hubballi, 580 031, Karnataka, India;2. Department of Mechanical Engineering, S. D. M. College of Engineering and Technology, Dharwad, 580 002, Karnataka, India;3. Department of Industrial and Production Engineering, B. V. B. College of Engineering and Technology, Hubballi, 580 031, Karnataka, India;4. Department of Mechanical Engineering, Dr. M B Shetty Institute of Technology Moodabidri, Karnataka, India;1. Department of Mechanical Convergence Engineering, Hanyang University Graduate School, 17 Haengdang-dong, Seongdong-gu, Seoul 04763, Republic of Korea;2. School of Mechanical Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 04763, Republic of Korea;1. Department of Mechanical Engineering, Amirkabir University of Technology, 424 Hafez Avenue, P.O. Box 15875-4413, Tehran, Iran;2. University of Southern Queensland, Toowoomba, 4350 QLD, Australia;1. Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi, 110016, Delhi, India;2. Mechanical Engineering Department, The NorthCap University, Sector – 23A, Gurugram, 122017, Haryana, India;1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China;2. Key Laboratory of Operation Safety Technology on Transport Vehicles, Ministry of Transport, Beijing 100088, China;3. College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China;1. Uludag University, Faculty of Engineering and Architecture, Dept. of Mechanical Eng., Bursa, Turkey;2. Uludag University, Faculty of Engineering and Architecture, Dept. of Automotive Eng., Bursa, Turkey |
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| Abstract: | A comparative analysis is being performed of the engine performance and exhaust emission on a gasoline and compressed natural gas (CNG) fueled retrofitted spark ignition car engine. A new 1.6 L, 4-cylinder petrol engine was converted to the computer incorporated bi-fuel system which operated with either gasoline or CNG using an electronically controlled solenoid actuated valve mechanism. The engine brake power, brake specific fuel consumption, brake thermal efficiency, exhaust gas temperature and exhaust emissions (unburnt hydrocarbon, carbon mono-oxide, oxygen and carbon dioxides) were measured over a range of speed variations at 50% and 80% throttle positions through a computer based data acquisition and control system. Comparative analysis of the experimental results showed 19.25% and 10.86% reduction in brake power and 15.96% and 14.68% reduction in brake specific fuel consumption (BSFC) at 50% and 80% throttle positions respectively while the engine was fueled with CNG compared to that with the gasoline. Whereas, the retrofitted engine produced 1.6% higher brake thermal efficiency and 24.21% higher exhaust gas temperature at 80% throttle had produced an average of 40.84% higher NOx emission over the speed range of 1500–5500 rpm at 80% throttle. Other emission contents (unburnt HC, CO, O2 and CO2) were significantly lower than those of the gasoline emissions. |
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