Recent developments in laser-induced incandescence (LII) for soot diagnostics in high-pressure laminar flames and engine-like Diesel combustion

The analysis of sootformation and oxidation is essential for Diesel engine development to meet future pollutant emission reduction requirements. In recent years laser-induced incandescence(LII) has developed to a powerful tool for sootdiagnostics in flames, even in the challenging environment of Diesel combustion. This work presents some recent applications of LII for sootparticle sizing in high pressure combustionenvironments including premixed laminar ethylene/air flames, diesel combustionin a constant volume spray combustionchamber and in- cylinder engine combustion, with some emphasis on challenges in modeling time-resolved LII signal transients in these environments.