Fuel NOx refers to ,deutz F4L912 engine NOx produced by a series of oxidation – reduction reactions in ,deutz F4L912 engine combustion process. It is ,deutz F4L912 engine primary source of NOx in ,deutz F4L912 engine combustion process of coal. ,deutz F4L912 engine generation of fuel NOx has multiple complicated processes, and ,deutz F4L912 engine reaction kinetics model used in ,deutz F4L912 engine study has more than 200 reactions. Type fuel NOx combustion temperature, excess air coefficient, both fuel properties such as impact, but also affected by ,deutz F4L912 engine combustion conditions of fuel air mixture in ,deutz F4L912 engine process of, ,deutz F4L912 engine y affect ,deutz F4L912 engine combustion chamber of local free radicals concentration distribution, thus ,deutz F4L912 engine formation of NOx and reduction. ,deutz F4L912 engine formation mechanism of ,deutz F4L912 engine particle refers to ,deutz F4L912 engine dispersed liquid or solid matter in ,deutz F4L912 engine air, and its particle size is molecular, namely, 0.0002 ~ 500 mu m, including aerosol, smoke, dust, fog and carbon smoke.