摘要
Abstract
In order to explore the influence of physicochemical properties of coal liquefaction diesel on actual vehicle emissions and fuel consumption,three types of oil products were selected:petroleum-based China Ⅵ diesel(G6),diesel from direct coal liquefaction(DDCL),and a blended diesel comprising both direct and indirect coal liquefaction products(DBCL).Real-driving tests were conducted on a China Ⅵ-compliant diesel vehicle using the Portable Emission Measurement System(PEMS)in accordance with GB 17691-2018.The results indicate that among the three fuels,DDCL exhibits the lowest sulfur content,polycyclic aromatic hydrocarbon(PAH)content,kinematic viscos-ity,and t90/t95 distillation temperature,which makes it excellent in terms of fuel emission and fuel consumption performance.Specifically,the lower sulfur and PAH contents contribute to reduced for-mation of harmful pollutants,while the lower kinematic viscosity and t90/t95 temperature enhance fuel atomization and combustion efficiency.In terms of emission performance,compared to G6 diesel,NOx emissions from DDCL and DBCL decrease by 63.82％and 39.11％,respectively;PN emissions from DDCL decrease by 40.54％;and CO emissions from DDCL and DBCL decrease by 97.24％and 96.02％,respectively.Regarding fuel consumption,the fuel consumption per 100 kilo-meters for DDCL and DBCL is reduced by 7.81％and 2.34％,respectively,compared to G6 diesel.关键词
煤液化柴油/理化特性/柴油车PEMS/排放/油耗Key words
coal liquefaction diesel/physicochemical properties/diesel vehicle PEMS/emission/fuel consumption分类
交通工程
