重型柴油机燃用不同柴油替代燃料的性能研究

Performance Study on Different Diesel Alternative-fuels for Heavy Duty Diesel Engine

对重型柴油机燃用纯柴油、体积混合比例为1:9的天然气合成油(GTL柴油)与柴油混合燃料(G10)、体积混合比例为1:9的生物柴油与柴油混合燃料(BD10)、纯GTL柴油(G100)及纯生物柴油(BD100)5种燃料的动力性、经济性及燃烧特性进行了研究。结果表明,BD10、G10与纯柴油有相似的燃烧特性,额定转速下G100的缸内工作压力增大,BD100的缸内工作压力显著降低;G10油耗较之BD10降低2.43%,功率较之BD10平均高2.78%;与燃用纯柴油的油耗相比,G100平均降低2.62%,BD100平均高出13%;除NOx排放外,生物柴油在降低CO、HC、PM的排放上均有所改善。

Study was carried out to investigate power performance, fuel economy and combustion characteristics of five fuels： pure diesel for diesel engine, blended fuel G10 mixed up with natural gas synthetic oil （GTL diesel fuel） and diesel fuel with mixing ratio of 1：9, blended fuel BD10 mixed up with biodiesel and diesel fuel with mixing ratio of 1：9, pure GTL diesel fuel G100 and pure biodiesel BD100, The study results indicate that G10 and BD10 fuel achieve similar combustion characteristics. At rated revolutions a considerable increase in cylinder operating pressure of G100 fuel can be observed while a remarkable decline of operating pressure inside cylinder with BD100 fuel. Compared with BD10 fuel, fuel consumption of G10 fuel is 2.43% lower and power is 2.78% higher. Compared with pure diesel fuel, fuel consumption of G100 is 2.62% lower while BD100 is 13% higher. In addition to NOx emission, biodiesel also see some improvements in CO, HC and PM emission.