Comparative study of some experimental methods to characterize the combustion process in a SI engine |
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| Affiliation: | 1. Monitoring and Laboratory Division, California Air Resources Board, 1900 14th Street, Sacramento, CA 95811, USA;2. Environmental Science & Engineering, Institute of the Environment and Sustainability, University of California, Los Angeles, La Kretz Hall, Suite 300, Los Angeles, CA 90095-1496, USA;3. Emissions Compliance, Automotive Regulations and Science Division, California Air Resources Board, 9528 Telstar Avenue, El Monte, CA 91731, USA;4. Environmental Health Sciences, Fielding School of Public Health, University of California, Los Angeles, 650 Charles E. Young Drive South, Los Angeles, CA 90095, USA;5. Division of Atmospheric Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV 89512, USA;6. Department of Mechanical Engineering, University of Alberta, 5-1C Mechanical Engineering Building, Edmonton, Alberta, Canada T6G 2G8;7. Center for Environmental Research and Technology (CE-CERT), Bourns College of Engineering, University of California, Riverside, 1084 Columbia Avenue, Riverside, CA 92507, USA;1. School of Automobile, Chang''an University, Xi''an 710064, PR China;2. Beijing Polytechnic, Beijing 100026, PR China;1. Department of Mechanical Engineering, Faculty of Engineering and Technology, Nile Valley University, P.O Box 26, Atbara, Sudan;2. Department of Mechanical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia;1. Department of Mechanical Engineering, The Hong Kong Polytechnic University, Kowloon, Hung Hom, Hong Kong, China;2. Key Laboratory for Power Machinery and Engineering of M.O.E, Shanghai Jiao Tong University, China;3. School of Energy and Environment, City University of Hong Kong, Hong Kong, China;4. Department of Electromechanical Engineering, University of Macau, Macau, China |
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| Abstract: | Seven common methods based on in-cylinder data, usually applied to determine the combustion parameters (ignition delay and combustion duration), are compared using in-cylinder data provided from a natural gas spark ignition engine operating under lean conditions. The influence of three engine operating parameters: spark advance, throttle opening and fuel/air equivalence ratio, on combustion parameters are tested using every method and the results are compared. The application of these methods on average and individual cycles is also performed. The advantages and disadvantages of these methods are presented and discussed. Some methods can be used only for the ignition delay determination. A comparison with a motor-cycle, so a specific experimental device, is necessary for three methods. Others are very sensitive to noise, or can be used only in some restricted area of engine operating conditions. One method needs calculations based on several experimental assumptions. |
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