The toxic fuel is harmful to human health and environment in earth, so that simulation is studied to find the relation of inflamer and time and temperature in Engine is important now. CO and NO is searched with the mass ratio and find the NO is bigger than CO under certain time. Meantime the more value of them contains the more emitted gas will be with the consuming of 7.6lit/h. The CO and NO will incline when their concentration incline from 0.2% to 4%. CO with the engine internal diameter being 87mm is higher than its 75mm. The big one has higher value than the small one. With the increasing temperature the inflamer is high, the temperature is big since the power is big too. It is found that x which is times of RT (room temperature) pressure increases when the temperature increases. Meantime it increases when cylinder length decreases.