【摘要】 在单缸直喷柴油机上燃用生物柴油混合燃料进行动力性与经济性、燃烧与排放特性试验。研究表明:与燃用纯生物柴油相比,发动机燃用生物柴油醇类混合燃料功率降低;有效燃油消耗率增加,有效能量消耗率降低;燃烧压力曲线后移,小负荷时峰值压力降低,中高负荷时峰值压力增加;CO与碳烟排放浓度降低(掺混甲醇效果更好)、HC排放略有增加但绝对值低、NOX排放基本保持不变。更多还原

【Abstract】 Power performance,economical nature,combustion and emission characteristics are tested on a single- cylinder direct-injection diesel engine fueled with biodiesel blended fuel. The research shows that compared with the pure biodiesel fuel,the power ratio of the engine fueled with the biodiesel alcohol blended fuel is lower. Effective fuel consumption rate is increased,and the effective energy consumption is reduced. After the shift of the combustion pressure curve,the peak pressure is decreased when the load is small,and the peak pressure is increased during the middle and high load. Emission concentration of CO,carbon smoke decreased( better mixed with methanol). HC emissions increase slightly but the absolute value is low. NOxemissions remain essentially unchanged.更多还原