摘要
在一台ZS1100柴油机上，以碳质纳米颗粒氧化石墨烯（GO）、多壁碳纳米管（MWCNT）和石墨烯（GR）作为燃料添加剂（25×10-6和100×10-6）分别加入生物柴油柴油掺混燃料中，研究了柴油机的燃烧特性、经济性能和炭烟排放特性。结果表明，柴油中掺混20%体积比的生物柴油改善了燃烧过程，各负荷下滞燃期缩短，CA50提前，炭烟排放降低，但燃油消耗率最大增加了4.2%，热效率降低了2.1%。3种碳质纳米燃料添加剂的加入都优化了掺混燃料的燃烧，缩短了滞燃期，改善了燃油经济性，对比发现，添加100×10-6的MWCNT后，缸压峰值最大提高了0.334 MPa，放热率峰值提高了17.9%，同时燃油消耗率最大降低5.0%，热效率提高4.4%。3种碳质纳米燃料添加剂的加入都降低了炭烟排放，且MWCNT和GR在高浓度时效果更加明显，其中100×10-6的MWCNT效果最显著，炭烟排放最大降低了17.2%。
Abstract
Carbonaceous nanoparticles graphene oxide (GO), multiwalled carbon nanotubes (MWCNT) and graphene (GR) were taken as fuel additives and added to biodiesel and diesel blends at 25×10-6 and 100×10-6 respectively. Then the combustion characteristics, economic performance and soot emissions were studied on a ZS1100 diesel engine. The results show that the blends with 20% volume of biodiesel improves the combustion process, shortens the flame retardation period, advances the CA50, and reduces soot emissions at each load, but leads to the increase of specific fuel consumption by 4.2% and the reduction of thermal efficiency by 2.1%. All the three carbonaceous nanofuel additives optimize the combustion, shorten the flame retardation period, and improve fuel economy. According to the comparison, the maximum cylinder pressure peak increases by 0.334 MPa, the peak heat release rate increases by 17.9%, the specific fuel consumption reduces by 5.0% at most, and the thermal efficiency increases by 4.4% after adding 100×10-6 MWCNT. In addition, the three carbonaceous nanofuel additives all reduce soot emissions. The reduction is more obvious at high concentrations of MWCNT and GR and reaches the optimal of 17.2% at 100×10-6 MWCNT.
关键词
柴油机 /
生物柴油 /
碳质纳米颗粒 /
燃料添加剂 /
燃烧 /
炭烟
郭亚泰，卫将军，滕勤，王井山，李德亮，曾杨.
碳质纳米燃料添加剂对柴油机性能影响的试验研究[J]. 车用发动机. 2022, 0(4): 17-21
GUO Yatai,WEI Jiangjun,TENG Qin,WANG Jingshan,LI Deliang,ZENG Yang.
Effects of Carbonaceous Nano-Fuel Additives on Diesel Engine Performance[J]. Vehicle Engine. 2022, 0(4): 17-21
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
