Performance analysis and optimization of a supercharged Miller cycle Otto engine |
| |
| Affiliation: | 1. Department of Mechanical Engineering, US Naval Academy, 121 Blake Road, Annapolis, MD 21402-5000, USA;2. Department of Mechanical Engineering, Yung Ta Institute of Technology and Commerce, Ping Tung, Taiwan, ROC;1. Dept of Mech Engg, KITS, Ramtek, 441106, India;2. Department of Mech Engg, VNIT, Nagpur, 440010 India;1. UNIOESTE, Western Paraná State University, Post-graduation Program, Master Course of Engineering Energy in Agriculture, Street University, 2069, School District, Cascavel, Paraná 85819-130, Brazil;2. UFPel, Federal University of Pelotas, Pos Graduation Program in Environmental Sciences, Street Benjamin Constant - Porto, Pelotas, Rio Grande do Sul 96010-440, Brazil;3. UFSC, Federal University of Santa Catarina, Post-graduation Program, Doctorate Course of Environmental Engineering, Tecnology Center – CTC, Trindade, Florianópolis, Santa Catarina 88040-900, Brazil;1. Department of Mechanical Engineering, Seoul National University,1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea;2. BK21 Plus Transformative Training Program for Creative Mechanical and Aerospace Engineers, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea;3. Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA |
| |
| Abstract: | One of the major alternatives of the Otto cycle has been examined to determine its potential for increased efficiency and net work power in the spark ignited internal combustion engine is to shorten the compression process relative to the expansion process by early close or late of intake valve. The modified Otto cycle is called Miller cycle. This paper deals with the analysis of a supercharged Otto engine adopted for Miller cycle operation. The Miller cycle shows no efficiency advantage and suffers a penalty in power output in the normally aspirated version. In the supercharged Otto engine adopted for Miller cycle version, it has no efficiency advantage but does provide increased net work output with reduced propensity to engine knock problem. Sensitivity analysis of cycle efficiency versus early close of intake valve and that of cycle net work versus early close of intake valve are performed. Optimization on the cycle efficiency is obtained. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
