汽车技术
汽車技術
기차기술
AUTOMABILE TECHNOLOGY
2014年
5期
58-61
,共4页
乙醇%均质压燃%燃烧稳定性%循环变动
乙醇%均質壓燃%燃燒穩定性%循環變動
을순%균질압연%연소은정성%순배변동
Ethanol%Homogeneous charge compression ignition%Combustion stability%Cyclical variation
研究了进气温度、过量空气系数和发动机转速对乙醇HCCI燃烧稳定性和循环变动的影响。试验结果表明，随着进气温度的升高，循环变动变小，最高燃烧压力的分布较为集中；随着过量空气系数的增大，循环变动变大，最高燃烧压力的分布较为分散；随着转速的增大，循环变动变小，最高燃烧压力的平均值变大，最高燃烧压力分布集中。对于乙醇燃料，进气温度为160℃、过量空气系数为2时，1200r/min是较优的转速。
研究瞭進氣溫度、過量空氣繫數和髮動機轉速對乙醇HCCI燃燒穩定性和循環變動的影響。試驗結果錶明，隨著進氣溫度的升高，循環變動變小，最高燃燒壓力的分佈較為集中；隨著過量空氣繫數的增大，循環變動變大，最高燃燒壓力的分佈較為分散；隨著轉速的增大，循環變動變小，最高燃燒壓力的平均值變大，最高燃燒壓力分佈集中。對于乙醇燃料，進氣溫度為160℃、過量空氣繫數為2時，1200r/min是較優的轉速。
연구료진기온도、과량공기계수화발동궤전속대을순HCCI연소은정성화순배변동적영향。시험결과표명，수착진기온도적승고，순배변동변소，최고연소압력적분포교위집중；수착과량공기계수적증대，순배변동변대，최고연소압력적분포교위분산；수착전속적증대，순배변동변소，최고연소압력적평균치변대，최고연소압력분포집중。대우을순연료，진기온도위160℃、과량공기계수위2시，1200r/min시교우적전속。
The effects of intake temperature, excess air coefficient and engine speed on combustion stability and cyclical variation of ethanol HCCI are studied in this paper. Test results show that, with the increase of intake temperature, the cyclical variation becomes smaller and distribution of the peak combustion pressure becomes concentrated; with the increase of excess air coefficient, the cyclical variation becomes bigger and distribution of the peak combustion pressure becomes relatively dispersed; while with the increase of engine speed, the cyclical variation becomes smaller, the average of the peak combustion pressure becomes bigger, and distribution of the peak combustion pressure becomes concentrated. For ethanol fuel, 1200rpm is an ideal engine speed when intake temperature reaches 160℃and excess air coefficient is 2.
