Implementation of a Multi-Zone Numerical Blow-by Model and Its Integration with CFD Simulations for Estimating Collateral Mass and Heat Fluxes in Optical Engines

Nowadays reducing green-house gas emissions and pushing the fossil fuel savings in field of light-duty vehicles is compulsory to slow down climate change. To this aim, use new combustion modes dilution strategies increase stability operations rich diluent an effective technique reduce temperatures heat losses throttled operations. Since behavior those solutions highly differs from that typical market systems, fundamental analyses optical engines are mandatory order gain a deep understanding tune models for improving mutual support between experiments simulations. However, it known accessible suffer significant blow-by collateral flow due installation measure line. Thus, reliable custom model capable being integrated with both mono-dimensional three-dimensional simulations was developed validated against experimental data. The can work two different configurations: (a) stand-alone, aiming at providing macroscopic data on ignitable mixture mass loss/recover through piston rings; (b) combined, which CFD engine local analysis likely release induced by blow-by. Furthermore, once validated, effect speed charge phenomenon were simulated discussed stand-alone mode.