Comparison between LIF Measurements and Modeling Predictions of OH-HCHO During HCCI Mode Combustion Development 2007-24-0019
The present study investigates formaldehyde (HCHO) and hydroxyl radical (OH) Laser-Induced Fluorescence (LIF) in an optical HCCI (Homogeneous Charge Compression Ignition) engine fuelled with pure n-heptane and a mixture of Primary-Reference-Fuels (PRF25) at a fixed equivalence ratio (0.3) from a simulated EGR (Exhaust Gas Recirculation) rate of 10% and 50%. OH and HCHO fluorescence images are superimposed to the Heat Release Rate (HRR). The results show that these two species are complementary markers of the HCCI combustion process. A zero-dimensional single zone model with a detailed kinetic scheme is also developed and combustion simulations are compared to the HRR, OH and HCHO experimental data. A good agreement is obtained.
Citation: Dubreuil, A., Mounaïm-Rousselle, C., Foucher, F., and Dagaut, P., "Comparison between LIF Measurements and Modeling Predictions of OH-HCHO During HCCI Mode Combustion Development," SAE Technical Paper 2007-24-0019, 2007, https://doi.org/10.4271/2007-24-0019. Download Citation
A. Dubreuil, C. Mounaïm-Rousselle, F. Foucher, P. Dagaut
LME - Université d'Orléans - France
8th International Conference on Engines for Automobiles