Jet characteristics of CNG injector with MPI system |
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| Institution: | 1. State Nuclear Power Research Institute, Beijing 102209, PR China;2. School of Materials Science and Engineering, Beihang University, Beijing 100191, PR China;1. Institute of Thermal Energy Technology and Safety, National Research Center of Helmholtz Association, Karlsruhe Institute of Technology, 76344, Germany;2. Institute of Nuclear and New Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety, Tsinghua University, Beijing 100084, China;3. Department of Energy, Environmental and Chemical Engineering, Washington University in Saint Louis, MO 63130, United States |
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| Abstract: | A theoretical model is developed that assumes the natural gas transient jet can be characterized as a spherical vortex interacting with a steady-state jet. Schlieren photographs revealed a low-pressure gas jet's starting and extending process from the nozzle.Comparison between the model and experimental results for the tip penetration of round jet, show that both have similar characteristics, and the results show that the tip penetration is proportional to the square root of time. Moreover, when per-time calorific values of the injecting fuel are the same, the tip penetration of the gas jet is longer than that of gasoline. |
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