【摘要】 针对自然吸气式车用６１１０ 型直喷柴油机，研究了喷油压力、喷油嘴类型、喷油嘴孔径和喷油嘴孔数对直喷柴油机的性能和排放的影响。试验结果表明，提高喷油压力、采用ＶＣＯ多孔数小孔径喷油嘴更有利于６１１０ 型柴油机在动力性、经济性不恶化情况下满足欧洲Ⅰ排放法规更多还原

【Abstract】 WT10.5,10.]The effects of injection pressure,injection nozzle type and diameter and number of injection nozzle holes on performance and exhaust emissions of a naturally aspirated, automotive and direct injection diesel engine 6110 were studied. However, the sufficient fuel injection pressure can only be set up by the strong enough pressure source(injection pump)and small enough total area of injection nozzle orifices under the allowable injection duration. The experimental results show that increasing injection pressure and incorporating an injection nozzle with VCO more holes and small hole diameter are helpful for the 6110 diesel engine to meet EURO Ⅰ emission limits without penalty of power performance and fuel economy.更多还原