Experiments and CFD Modeling of Direct Injection Gasoline HCCI Engine Combustion 2002-01-1925
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.
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. Download Citation
Author(s):
Song-Charng Kong, Craig D. Marriott, Christopher J. Rutland, Rolf D. Reitz
Affiliated:
University of Wisconsin-Madison
Pages: 16
Event:
Future Car Congress
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Homogeneous Charge Compression Ignition (HCCI) Engines-PT-94
Related Topics:
Diesel / compression ignition engines
HCCI engines
Nitrogen oxides
Ignition timing
Combustion and combustion processes
Computational fluid dynamics
Simulation and modeling
Engine cylinders
Gasoline
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