Effects of nozzle geometry on direct injection diesel engine combustion process |
| |
| Authors: | R. Payri F.J. Salvador J. Gimeno J. de la Morena |
| |
| Affiliation: | 1. Swiss Federal Institute of Technology, Switzerland;2. University of Kaiserslautern, Germany;1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China;2. College of Environmental and Energy Engineering, Key Laboratory of Beijing on Regional Air Pollution Control and Beijing Laboratory of New Energy Vehicles, Beijing University of Technology, Beijing 100124, China;3. Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing 100081&100124, China;1. Department of Mechanical Engineering, Marmara University, 34722 Istanbul, Turkey;2. Department of Automotive Engineering, Kocaeli University, 41380 Izmit, Turkey;3. Alternative Fuels R&D Center, Kocaeli University, 41275 Izmit, Turkey;1. School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China;2. Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China;1. National Institute of Advanced Industrial Science and Technology, Energy Technology Research Institute, 1-2-1, Namiki, Tsukuba, Ibaraki 305-8564, Japan;2. Argonne National Laboratory, Advanced Photon Source, 9700 S Cass Ave, Argonne, IL 60439, USA;3. DENSO CORPORATION, 1-1, Showa-cho, Kariya-shi, Aichi-ken 448-8661, Japan |
| |
| Abstract: | The aim of the current article is to link nozzle geometry, and its influence on spray characteristics, with combustion characteristics in the chamber. For this purpose, three 6-hole sac nozzles, with different orifices degree of conicity, have been used. These nozzles had been geometrically and hydraulically characterized in a previous publication, where also a study of liquid phase penetration and stabilized liquid length in real engine conditions has been done. In the present work, CH and OH chemiluminescence techniques are used to thoroughly examine combustion process. CH-radicals are directly related to pre-reactions, which take place once the fuel has mixed with air and it has evaporated. On the other hand, OH-radicals data provide information about the location of the flame front once the combustion has begun. The analysis of all the results allows linking nozzle geometry, spray behaviour and combustion development. In particular, CH-radicals have shown to appear together with vapor spray, both temporally and in their location, being directly related to nozzle characteristics. Additionally, analysis of ignition delay is done form OH measurements, including some correlations in terms of chamber properties, injection pressure and nozzle diameter. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
