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Multi-Zone Kinetic Model of Controlled Auto Ignition Combustion
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 20, 2009 by SAE International in United States
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A multi-zone Controlled Auto Ignition (CAI) model for simulating the combustion and emissions has been developed and reported in this paper. The model takes into account the effects of the boundary layer, crevice volume, and blowby. In order to investigate the influences of in-cylinder inhomogeneity, the main cylinder chamber has been divided into multiple core zones with varying temperature and composition. Mass and energy transfer between neighbouring zones were modeled. A reduced chemical kinetic mechanism was implemented in each zone to simulate the CAI combustion chemistry and emission formation. An in-house code, the LUCKS (Loughborough University Chemical Kinetics Simulation), was employed to solve the coupled differential equations of the system. The model was validated against experimental results at various Internal Exhaust Gas Recirculation (IEGR) levels and was then used to analyze the thermal and chemical effect of the IEGR on the CAI combustion. Good agreement between modeling and experimental results in terms of major CAI combustion parameters and emissions (CO, HC, and NOx) has been achieved.
CitationChen, R. and Liu, Z., "Multi-Zone Kinetic Model of Controlled Auto Ignition Combustion," SAE Technical Paper 2009-01-0673, 2009, https://doi.org/10.4271/2009-01-0673.
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