汽车工程
汽車工程
기차공정
Automotive Engineering
2015年
11期
1232-1239
,共8页
双燃料发动机%排放模型%替代率%喷油正时%可靠性
雙燃料髮動機%排放模型%替代率%噴油正時%可靠性
쌍연료발동궤%배방모형%체대솔%분유정시%가고성
dual fuel engine%emission model%replacement rate%injection timing%reliability
利用GT-power软件建立了柴油天然气双燃料发动机工作过程仿真模型,用偏最小二乘回归方法建立NOX ,HC,CO和烟度排放模型,研究燃料替代率和喷油提前角对发动机可靠性和排放的影响。以发动机可靠性作为优化约束条件,兼顾动力性和排放,对各工况的替代率和喷油提前角进行优化。把优化后的替代率和喷油提前角脉谱图嵌入发动机电子控制单元中,通过台架试验对替代率和喷油提前角进一步优化,最终得到满足可靠性、动力性、经济性和排放的最优替代率和喷油提前角。
利用GT-power軟件建立瞭柴油天然氣雙燃料髮動機工作過程倣真模型,用偏最小二乘迴歸方法建立NOX ,HC,CO和煙度排放模型,研究燃料替代率和噴油提前角對髮動機可靠性和排放的影響。以髮動機可靠性作為優化約束條件,兼顧動力性和排放,對各工況的替代率和噴油提前角進行優化。把優化後的替代率和噴油提前角脈譜圖嵌入髮動機電子控製單元中,通過檯架試驗對替代率和噴油提前角進一步優化,最終得到滿足可靠性、動力性、經濟性和排放的最優替代率和噴油提前角。
이용GT-power연건건립료시유천연기쌍연료발동궤공작과정방진모형,용편최소이승회귀방법건립NOX ,HC,CO화연도배방모형,연구연료체대솔화분유제전각대발동궤가고성화배방적영향。이발동궤가고성작위우화약속조건,겸고동력성화배방,대각공황적체대솔화분유제전각진행우화。파우화후적체대솔화분유제전각맥보도감입발동궤전자공제단원중,통과태가시험대체대솔화분유제전각진일보우화,최종득도만족가고성、동력성、경제성화배방적최우체대솔화분유제전각。
A working process simulation model for diesel / natural gas dual fuel engine is established with GT-power software, and an emission models of NOx , HC, CO and soot is created by using partial least squares re-gression algorithm. The effects of fuel replacement rate and injection timing on the reliability and emission of engine is studied. Concurrently considering the power performance and emission of engine, with reliability as constraint, an optimization is conducted on replacement rate and the advance angle of fuel injection in different conditions. With the map of optimized replacement rate and fuel injection angle embedded into the electrically controlled unit of en-gine, the replacement rate and fuel injection angle are further optimized by bench test, with the optimal replacement rate and injection angle meeting the requirements of reliability, power, fuel economy and emission performances ob-tained in the end.
