Analysis of auto-ignition characteristics of low-alcohol/iso-octane blends using combined chemical kinetics mechanisms

Knocking combustion is mainly caused by auto-ignition of the end gas in spark-ignition (SI) engines. It not only leads to severe engine damage, but also can reduce thermal efficiency and constrain engine performance. As high-octane gasoline additives, the auto-ignition characteristics of low-alcohols, such as methanol, ethanol and n-butanol, and their blends with iso-octane fuels are analyzed under the conditions of the end gas. Moreover, the...