【正文】 of efficiency and reduced emission. HCCI bustion can not only ensure both the high economic and dynamic quality of the engine, but also efficiently reduce the NOx and smoke emission. Moreover, one of the remarkable characteristics of HCCI bustion is that the ignition and bustion process are controlled by the chemical kinetics, so the HCCI ignition time can vary significantly with the changes of engine configuration parameters and operating conditions. In this work numerical scheme for the ignition and bustion process of DME homogeneous charge pression ignition is studied. The detailed reaction mechanism of DME proposed by American Lawrence Livermore National Laboratory (LLNL) and the HCT chemical kinetics code developed by LLNL are used to investigate the ignition and bustion processes of an HCCI engine fueled with DME. The new kinetic mechanism for DME consists of 79 species and 。為滿足嚴(yán)格的排放要求，研究人員在各個相關(guān)領(lǐng)域進(jìn)行了大量的研究工作，改進(jìn)發(fā)動機的燃燒系統(tǒng)作為一個重要解決途徑，也取得了一定進(jìn)展[1]。各編號之間上下對齊。請在文獻(xiàn)題目后給出文獻(xiàn)類型標(biāo)識（專著[M]、論文集[C]、學(xué)位論文[D]、報告[R]、期刊[J]、標(biāo)準(zhǔn)[S]、專利[P]，參考文獻(xiàn)不少于15條，其中外文資料不少于5篇[2] Brian Miller．A multiple modulator