烷烃的定容喷射自燃研究

In this study, spray auto-ignition experiments were carried out on a constant volume combustion chamber for some alkanes like n-paraffins with different chain length, cyclohexane, n-butyl cyclohexane, and isooctane. The auto-ignition qualities of n-heptane, isooctane and n-decane under different initial chamber temperature were investigated in details. Results showed that n-paraffins’ reaction activity was relatively high. Meanwhile, the auto-ignition characteristics differed significantly with different molecular structure. Adding n-decane with various volume fractions to Standard Blended Fuel and product gasoline would improve the fuel reaction activity to varying degrees. At last, the functional groups effects were formulated to simulate the relationship between molecular topology and auto-ignition quality.

Constant Volume Spray Auto-ignition Study of Alkanes

Spray auto-ignition experiments were carried out in a constant volume combustion chamber for some pure alkanes(n-paraffins with different chain length, cyclohexane, n-butyl cyclohexane, and isooctane) and blends of n-decane with Standard Blended Fuel(isooctane/n-heptane) and product gasoline. Test results showed that the reaction activity of n-paraffins was relatively high. Meanwhile, the auto-ignition characteristics differed significantly with the molecular structures of alkanes. Adding different volume fractions of n-decane to Standard Blended Fuel and product gasoline could improve the fuel reaction activity at varying degree. Finally, functional groups effects were used to simulate the relationship between the molecular topology and the auto-ignition quality.