中国电机工程学报
中國電機工程學報
중국전궤공정학보
ZHONGGUO DIANJI GONGCHENG XUEBAO
2014年
8期
1268-1275
,共8页
陈俊杰%王华%刘志超%盛伟%温小萍
陳俊傑%王華%劉誌超%盛偉%溫小萍
진준걸%왕화%류지초%성위%온소평
微型发动机%催化燃烧%燃烧特性%微动力机电系统
微型髮動機%催化燃燒%燃燒特性%微動力機電繫統
미형발동궤%최화연소%연소특성%미동력궤전계통
micro engine%catalytic combustion%combustion characteristics%power micro electro mechanical system
为了解催化对微型发动机燃烧室内甲烷燃烧特性的影响，采用甲烷和空气的预混合气体，对在活塞上表面和燃烧室顶部涂有 Pt-La/γ-Al2O3催化剂的微型发动机的催化燃烧特性进行了实验研究及数值模拟，对比分析了有、无催化燃烧时微型发动机的燃烧特性。结果表明：催化燃烧可以提高燃烧效率，着火时刻会有大幅度的提前，微型发动机具有更高的输出功率和能量密度；催化燃烧可以降低燃料的着火温度，扩展微燃烧的可燃界限。
為瞭解催化對微型髮動機燃燒室內甲烷燃燒特性的影響，採用甲烷和空氣的預混閤氣體，對在活塞上錶麵和燃燒室頂部塗有 Pt-La/γ-Al2O3催化劑的微型髮動機的催化燃燒特性進行瞭實驗研究及數值模擬，對比分析瞭有、無催化燃燒時微型髮動機的燃燒特性。結果錶明：催化燃燒可以提高燃燒效率，著火時刻會有大幅度的提前，微型髮動機具有更高的輸齣功率和能量密度；催化燃燒可以降低燃料的著火溫度，擴展微燃燒的可燃界限。
위료해최화대미형발동궤연소실내갑완연소특성적영향，채용갑완화공기적예혼합기체，대재활새상표면화연소실정부도유 Pt-La/γ-Al2O3최화제적미형발동궤적최화연소특성진행료실험연구급수치모의，대비분석료유、무최화연소시미형발동궤적연소특성。결과표명：최화연소가이제고연소효솔，착화시각회유대폭도적제전，미형발동궤구유경고적수출공솔화능량밀도；최화연소가이강저연료적착화온도，확전미연소적가연계한。
In order to understand the catalysis effect on the combustion characteristics inside combustion chamber of micro engine, catalytic combustion characteristics of methane/air mixture were investigated experimentally and numerically by using the catalysts (Pt-La/γ-Al2O3). The comparative study of non-catalytic and catalytic combustion was carried out to clarify combustion characteristics of the micro engine. The results show that the combustion efficiency is improved and the ignition timing is advanced greatly by catalytic combustion. The output power and the energy density of micro engine can be improved by catalytic combustion. The ignition temperature of the fuel is reduced and the micro-combustion limits are extended by catalytic combustion.
