CAJ | 학술논문

　　利用发动机尾气中余热使水蒸气汽化的方式，通过进气道喷水蒸气参与燃烧的方法，对车用柴油机性能影响进行了研究。实验证明，改造后柴油机的油耗率并不能明显降低；当转速低于1800rpm时，扭矩低于原机，但当高于1800rpm时,扭矩会有所提高，提高的最大幅度达57.4%；柴油机排烟温度比原有状态略有降低；在100%负荷时，NOx排放由9.0g/kWh降为7.1g/kWh，降幅为22.2%；CO排放随负荷变化略有起伏，但总体趋势还是减小的；HC排放比原机有所降低，降低幅度最大为3.7%。此方法具有对柴油机改动小，喷水系统相对独立的优点。
　　이용발동궤미기중여열사수증기기화적방식，통과진기도분수증기삼여연소적방법，대차용시유궤성능영향진행료연구。실험증명，개조후시유궤적유모솔병불능명현강저；당전속저우1800rpm시，뉴구저우원궤，단당고우1800rpm시,뉴구회유소제고，제고적최대폭도체57.4%；시유궤배연온도비원유상태략유강저；재100%부하시，NOx배방유9.0g/kWh강위7.1g/kWh，강폭위22.2%；CO배방수부하변화략유기복，단총체추세환시감소적；HC배방비원궤유소강저，강저폭도최대위3.7%。차방법구유대시유궤개동소，분수계통상대독립적우점。
using the exhaust gas of diesel engine to heat the water to vapor, by injecting the vapor into inlet channel to join combustion, the performance of vehicle diesel engine has been researched. The experiments results demonstrate that after transforming, the diesel engine fuel consumption rate cannot reduce markedly. when rotate speed is below 1800rpm, the torque is lower than the original machine. while the rotate speed is bigger than 1800rpm, the torque will increase and the maximum advance is 57.4%, exhaust temperature of diesel engine is slightly lower than the original state.When engine work in rated load, the NOx can be reduced from 9.0 g/kWh to 7.1g/kWh by 22.2%; the CO will fluctuate with the load change,but the trend is decrease.The HC emission is lower than original engine, the maximum reduction is 3.7%. This method has the advantages such as small modify of the engine and the injection system is relatively independent.