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Quasidimensional Simulation with Multi-zone Combustion Model for Homogeneous GDI Engine Emissions and Knocking  

Lee, Jaeseo (포항공과대학교, 기계공학과)
Huh, Kang Y. (포항공과대학교, 기계공학과)
Kwon, Hyuckmo (현대기아자동차, 파워트레인 해석팀)
Park, Jae In (현대기아자동차, 파워트레인 해석팀)
Publication Information
Journal of the Korean Society of Combustion / v.18, no.1, 2013 , pp. 7-12 More about this Journal
A quasidimensional program is developed for a four stroke cycle homogeneous GDI (Gasoline Direct Injection) engine. It includes models for spray, burning rate and chemistry to predict knock and emissions. With early injection a homogeneous GDI engine goes through spark ignited, turbulent premixed combustion as in PFI (Port Fuel Injection) engines. The cylinder charge is divided into unburned and burned zone with the latter divided into multiple zones of equal mass to resolve temperature stratification. Validation is performed against measured pressure traces, NOx and CO emissions at different load and RPM conditions. Comparison is made between an empirical knock model and predictions by the chemistry model in this work.
Homogeneous gasoline direct injection(GDI) engine; Quasidimensional analysis; Knocking; NOx and CO;
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