A KINETIC EXAMINATION OF THE EFFECTS OF THE PRESENCE OF SOME GASEOUS FUELS AND PREIGNITION REACTION PRODUCTS WITH HYDROGEN ON ITS AUTOIGNITION CHARACTERISTICS IN ENGINES

摘要

The paper describes the results of an analytical approach that models in full the reaction rate development in a motored engine of fuel mixtures of hydrogen with CH_4 and C_3H_8 in air while in the presence of exhaust gas recirculation. It is shown that the presence of these fuels with hydrogen can modify significantly the rates of reactions leading to autoignition which control the tendency of spark ignition engines to knock. It is also shown that exhaust gas recirculation can modify significantly the autoignition behaviour of hydrogen and its mixtures with methane or propane in engines.