Eriko Matsumura

The Spray Feature of Direct Injection Gasoline Engine with Super High Spatial Resolution Photography

11:00 JSAE20159091 / SAE2015-01-1788 An Investigation of the Effects of Fuel Concentration Inhomogeneity on HCCI Combustion Fuel Concentration of Pre-mixture Using LIF Measurement Hiroshi Mizokami, Mina Nishi, Norimasa Iida, Keio University FD2: Diesel Fuel Control (1) Room G (Conference Room 3K), 3F East Bldg. Chairpersons: Kohtaro Hashimoto, Honda R&D Co., Ltd. Takahiro Sako, Osaka Gas Co., Ltd. Alexandra Fersner, Afton Chemical

Reduction of Reaction Mechanism for n -Tridecane Based on Knowledge of Detailed Reaction Paths

A detailed chemical kinetic mechanism for n-tridecane generated by KUCRS, contains 1493 chemical species and 3641 elementary reactions. Reaction paths during ignition process for n-tridecane in air computed using the detailed mechanism, were analyzed with the initial temperatures of 650 K, 850 K, and 1100 K in the τ1 dominant, negative temperature coefficient, and non-τ1 regions, respectively. Based on full knowledge derived from the reaction path analysis, a reduced mechanism containing 49 species and 85 reactions, was developed and validated. The reduced mechanism includes C3H7, C2H5, and CH3 as representative fragmental alkyl radicals, C7H14, C3H6, and C2H4 as representative alkenes, and C3H7CHO and CH2O as representative aldehydes. Ignition delay times with different initial temperatures between 600 K and 1200 K using the reduced mechanism, and their dependences on pressure and equivalence ratio agree well with those using the detailed mechanism. The profiles of fuel, CH2O, H2O2, and CO concentrations agree roughly with those using the detailed mechanism.