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Experiments and CFD Modeling of Direct Injection Gasoline HCCI Engine Combustion
Technical Paper
2002-01-1925
ISSN: 0148-7191, e-ISSN: 2688-3627
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Event:
Future Car Congress
Language:
English
Abstract
The present study investigated HCCI combustion in a heavy-duty diesel engine both experimentally and numerically. The engine was equipped with a hollow-cone pressure-swirl injector using gasoline direct injection. Characteristics of HCCI combustion were obtained by very early injection with a heated intake charge. Experimental results showed an increase in NOx emission and a decrease in UHC as the injection timing was retarded. It was also found that optimization can be achieved by controlling the intake temperature together with the start-of-injection timing. The experiments were modeled by using an engine CFD code with detailed chemistry. The CHEMKIN code was implemented into KIVA-3V such that the chemistry and flow solutions were coupled. The model predicted ignition timing, cylinder pressure, and heat release rates reasonably well. The NOx emissions were found to increase as the injection timing was retarded, in agreement with experimental results. Computed CO and HC emissions trends were also in agreement with the measured data.
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Citation
Kong, S., Marriott, C., Rutland, C., and Reitz, R., "Experiments and CFD Modeling of Direct Injection Gasoline HCCI Engine Combustion," SAE Technical Paper 2002-01-1925, 2002, https://doi.org/10.4271/2002-01-1925.Also In
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