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Numerical Assessment of Controlling the Interval between Two Heat-Release Peaks for Noise Reduction in Split-injection PCCI Combustion
Technical Paper
2015-01-1851
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In PCCI combustion with multiple injections, the mechanism having two heat release peaks which has a favorable characteristic of reducing noise is studied using numerical tool of single- and also multi-zone model of CHEMKIN PRO. In the present investigation, the physical issues, such as variations in the equivalent ratio and temperature caused by the fuel injection are simplified first so that the key issues of chemical reaction occurred in the combustion chamber can be extracted and are discussed in detail. The results show that the interval of two heat-release peaks can be controlled and as the number of zones of the calculation increases, the change in the timing of a heat release peak is increased but over three-zones, it is not affected any more. This indicates that to study about complex diesel combustion phenomena, three-to four-zone model shall give sufficiently accurate results.
Authors
Citation
Nishi, M., Ikeda, H., Iida, N., Kuzuyama, H. et al., "Numerical Assessment of Controlling the Interval between Two Heat-Release Peaks for Noise Reduction in Split-injection PCCI Combustion," SAE Technical Paper 2015-01-1851, 2015, https://doi.org/10.4271/2015-01-1851.Also In
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