CAJ | 학술논문

为了研究柴油,甲醇组合燃烧(DMCC)方式对发动机排放性能的影响,在增压中冷发动机上采用DMCC方式,对甲醛排放特性进行研究,另外在DMCC模式下对加装氧化催化转换器前后常规排放进行对比.结果表明:在各负荷下,甲醛排放均随着甲醇喷射量的增加而升高;在甲醇喷射量不变的情况下,甲醛排放随着负荷的增加明显降低.增压中冷发动机的NOx和碳烟及微粒排放同时大幅度下降,但HC和CO排放增加较多.加装氧化催化转化器后,HC和CO排放得到了大幅度降低,微粒排放也进一步减少.
위료연구시유,갑순조합연소(DMCC)방식대발동궤배방성능적영향,재증압중랭발동궤상채용DMCC방식,대갑철배방특성진행연구,령외재DMCC모식하대가장양화최화전환기전후상규배방진행대비.결과표명:재각부하하,갑철배방균수착갑순분사량적증가이승고;재갑순분사량불변적정황하,갑철배방수착부하적증가명현강저.증압중랭발동궤적NOx화탄연급미립배방동시대폭도하강,단HC화CO배방증가교다.가장양화최화전화기후,HC화CO배방득도료대폭도강저,미립배방야진일보감소.
Regulated emissions and formaldehyde emission from a turbocharged inter-cooled diesel engine with or without oxidation catalyst have been reported when the diesel/methanol compound combustion mode was used. The test results showed that formaldehyde emission increased with the increasing of methanol injection under all loads, while it obviously decreased with the increasing of engine load at a fixed methanol injection. The emissions of NOx and PM emissions were greatly reduced,while HC and CO emissions were dramatically increased．However,those unburned HC and CO were eliminated with the installation of a diesel oxidation catalyst converter(DOC),furthur reducing PM emission．