摘要
在现有的化油器式汽油机结构不做变动和调整的情况下,研究了4种比例的乙醇汽油对发动机动力性、经济性和排放性的影响。研究表明:汽油机使用乙醇汽油,随燃料中乙醇添加比例的增加,过量空气系数逐渐增大;发动机的最大功率有所降低;燃料消耗率逐渐增加,能量消耗率变化不大;CO排放在中低负荷没有明显变化,在高负荷逐渐减少;HC排放逐渐减少;NOx排放在中低负荷逐渐减少,在高负荷逐渐增加。
Without modification and adjustment of a carburetor engine, four ethanol-gasoline blends with different ethanol contents were studied for engine power performance, fuel economy and emission behavior. The results show that the engine power output decreases a little as the proportion of ethanol increases, because the excess air ratio is gradually increased. The brake specific energy consumption is equivalent while the brake specific fuel consumption gradually increases. Judged by the engine emission behavior, CO emission gradually decreases at the high load, but is equivalent at the mid-low load; HC emission gradually decreases; and NO_x emission gradually increases at the high load while decreases at the mid-low load.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2005年第1期24-28,共5页
Journal of Jilin University:Engineering and Technology Edition
基金
"973"国家重点基础研究规划项目(2001CB209206).
关键词
动力机械工程
乙醇汽油
化油器发动机
发动机性能
排放
power machinery engineering
ethanol-gasoline blends
carburetor engine
engine performance
emissions performance
