A Tabulated Chemistry Multi-Zone Combustion Model of HCCI Engines Supplied with Pure Fuel and Fuel Blends

Homogeneous charge compression ignition is considered a promising solution to face the increasing regulations imposed by legislator in transport sector, thanks pollutant and CO2 emissions reduction. In this work, quasi-dimensional multi-zone HCCI model integrated with 1D commercial software developed validated. It based on control mass Lagrangian approach computes mixture chemistry evolution through offline tabulation of chemical kinetics (tabulated kinetic ignition). Thus, simulation can predict auto-ignition reduced computational effort high accuracy. Multi-zone schematization mimics typical thermal stratification engines, controlling combustion evolution. The coupled sub-models for estimation. Initially, tabulated validated against solver applied constant-volume homogeneous reactor, considering various fuel blends. then used simulate operations four engines using different fuels (hydrogen, methane, n-heptane, n-heptane/toluene/ethanol blend), under boundary conditions. predictivity demonstrated pressure traces, heat release rate, noxious emissions. numerical results showed adequately agree measured counterparts (average relative error 1.3% in-cylinder peak, average absolute 0.95 CAD peak angle, 8.4% uHCs emissions, below 1 ppm NOx emissions) only adapting study. methodology proved be reliable tool investigate operation an engine, applicable development new engine architecture.