CAJ | 학술논문

在一款标定功率74kW、配置电控分配泵的欧Ⅲ柴油机基础上,通过采用第二代高压共轨(160MPa)燃油喷射装置、可变喷嘴截面涡轮增压器(VNT)等技术,并对关键零部件的局部结构设计予以优化改进.对喷油嘴伸出量(NTP)、喷油嘴流量、涡流比和涡轮增压器进行了综合性能匹配试验.结果表明,改进后的柴油机标定功率提升至98.2kW,排放满足欧Ⅳ法规,并且加装颗粒捕集器(DPF)后,具备从欧Ⅳ进一步升级至欧Ⅴ的潜能.
재일관표정공솔74kW、배치전공분배빙적구Ⅲ시유궤기출상,통과채용제이대고압공궤(160MPa)연유분사장치、가변분취절면와륜증압기(VNT)등기술,병대관건령부건적국부결구설계여이우화개진.대분유취신출량(NTP)、분유취류량、와류비화와륜증압기진행료종합성능필배시험.결과표명,개진후적시유궤표정공솔제승지98.2kW,배방만족구Ⅳ법규,병차가장과립포집기(DPF)후,구비종구Ⅳ진일보승급지구Ⅴ적잠능.
For a rated power 74kW, Euro Ⅲ prototype diesel engine equipped with electric distribution pump, the design of local structure for key parts was optimized and improved by using the second generation high-pressure (160MPa) common rail fuel injection device, variable nozzle geometry turbocharger (VNT) and other technology. The integrated performance matching experiment for nozzle tip protrusion(NTP), nozzle flow rate, swirl ratio and turbocharger was performed. The results show that the rated power of improved diesel engine can promote to 98.2kW, emission level can meet Euro Ⅳ emission standard, and it has a potential for further upgrade to Euro Ⅴ when the diesel particle filter (DPF) is used.