A reduced chemical kinetic mechanism for oxidation of n-butane was built through reaction rate analysis. The mechanism consisted of 80 species and 378 reactions and emphasized ignition progress. The reduced mechanism was used to simulate the consumption of fuel and oxygen

distribution of temperature and main products at pressure of 1 MPa

stoichiometric ratio of 1

temperature of 700 K and showed good agreement on ignition delay times with the detailed one in a wide range of pressure (0.1

1

2

3 MPa)

stoichiometric ratio (0.5

1

2) and temperature (650-1450 K)

which reflected the accuracy of the reduced mechanism.