A mathematic model of basic ignition advance angel is built according to double - district burn model and the turbulent flame behavior propagation model . through the emulational calculation , we can get the initial ignition advance angel map graph of the motorcycle ’ s efi system , and the results also showed well consistent with the stand experimental results which adopted the domestic 125ml motorcycle gasoline engine 在結(jié)合汽油機(jī)雙區(qū)燃燒模型和湍流火焰?zhèn)鞑ツP偷幕A(chǔ)上,建立了基本點(diǎn)火提前角數(shù)學(xué)模型,運(yùn)用在國產(chǎn)125ml摩托車發(fā)動(dòng)機(jī)上,仿真得出此發(fā)動(dòng)機(jī)電控噴射系統(tǒng)的初始點(diǎn)火map圖。