KINETIC WALL QUENCHING OF METHANOL FLAMES WITH APPLICATIONS TO SPARK IGNITION ENGINES

摘要: A computer model was used to predict perpendicular flame quenching distances for methanol-air mixtures at a variety of conditions. detailed kinetic reaction mechanism has allowed the study aldehyde formation. Aldehydes were found increase an order magnitude over bulk gas concentrations as quenches but this concentration is insufficient account measured exhaust aldehydes. flow reactor showed additional aldehydes being formed from unburned quench layer when it mixes with hot gases during expansion and strokes. Quenching distance decreases increasing pressure wall temperature, increases lean very rich equivalence ratios recirculation. Water addition shows only slight in up 30% fuel by volume.