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- W2044319682 abstract "Ionization in internal combustion engines produces a signal indicative of in-cylinder conditions that can be used for the feedback electronic control of the engine, to meet production goals in performance, fuel economy and emissions. Most of the research has been conducted on carbureted and port injection spark ignition engines where the ionization mechanisms are well defined. A limited number of investigations have been conducted on ionization in diesel engines because of its complex combustion process. In this study, a detailed ionization mechanism is developed and introduced in a 3-D diesel cycle simulation computational fluid dynamics (CFD) code to determine the contribution of different species in the ionization process at different engine operating conditions. The CFD code is coupled with DARS-CFD, another module used to allow chemical kinetics calculations. The three-dimensional model accounts for the heterogeneity of the charge and the resulting variations in the combustion products. Furthermore, the model shows the effects of varying fuel injection pressure and engine load on the ion current signal characteristics. Ion current traces obtained experimentally from a heavy duty diesel engine were compared to the 3-D model results. The results of the simulation indicate that some heavy hydrocarbons, soot precursors play a major role, in addition to the role of NOx in ionization in diesel combustion." @default.
- W2044319682 created "2016-06-24" @default.
- W2044319682 creator A5021029331 @default.
- W2044319682 date "2013-10-13" @default.
- W2044319682 modified "2023-10-16" @default.
- W2044319682 title "Modeling of Ion Current Signal in Diesel Combustion" @default.
- W2044319682 doi "https://doi.org/10.1115/icef2013-19090" @default.
- W2044319682 hasPublicationYear "2013" @default.
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