Chemiluminescence emissions measurements of OH* and CH* are used to characterize the combustion of blends of methane and hydrogen in air in a constant volume combustion bomb, with two sets of initial conditions. The combined results of combustion development cover from 0.1 to 2.5 MPa. Burning velocity, heat release and unburned/burned gas temperatures are obtained from the pressure by using a two-zone thermodynamic combustion diagnostic model. Intensity of OH* and CH* increases with the initial temperature and the percentage of hydrogen, in parallel with the usual increase in burning velocity. The timings of the peaks of OH* and CH* chemiluminescence emissions are found to correlate respectively with the maximum rate of heat release and flame temperature. These results show that both chemiluminescence signals can be used to monitorize the burning process in combustion devices operating in the pressure range studied.

OH *和CH *的化学发光发射测量用于表征恒量燃烧弹中具有两组初始条件的甲烷和氢的混合物在空气中的燃烧。燃烧发展的综合结果覆盖了0.1到2.5 MPa。通过使用两区热力学燃烧诊断模型，可以从压力获得燃烧速度，放热和未燃烧气体的温度。OH *和CH *的强度随初始温度和氢百分比的增加而增加，而燃烧速度通常会升高。发现OH *和CH *化学发光发射峰的时间分别与最大放热速率和火焰温度相关。