Impact of road grade on real driving emissions from two Euro 5 diesel vehicles

被引:67
作者
Costagliola, Maria Antonietta [1 ]
Costabile, Marianeve [1 ]
Prati, Maria Vittoria [1 ]
机构
[1] Italian Natl Res Council, Ist Motori, Viale Marconi 4, I-80125 Naples, Italy
关键词
Road grade; Nitrogen oxides; Carbon dioxide; Vehicle Specific Power; RDE test; FUEL CONSUMPTION; PASSENGER VEHICLES; ENERGY-CONSUMPTION; EXHAUST EMISSIONS; NOX EMISSIONS; CO2; EMISSIONS; WORLD; NEDC; CARS;
D O I
10.1016/j.apenergy.2018.09.108
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
On-road real driving emissions (RDE) testing was used to study the effects of many parameters not taken into account by laboratory testing but which can greatly influence vehicle pollutant emissions. Among these, road grade plays a key role. This paper investigates the effects of positive and negative road grades on the exhaust emissions of two Euro 5 diesel vehicles. Both vehicles were tested in the laboratory on the chassis dynamometer and on the road along a mixed route in Naples (Italy). The circuit includes urban, extra-urban and motorway driving in order to comply with Euro 6 RDE requirements. Laboratory testing aimed to assess emissions during current type approval driving cycles; on-road tests using portable analysers were used to determine real emissions as a function of road gradient. Vehicle Specific Power (VSP) analysis revealed that with respect to positive road grades, negative ones explain a higher share of total VSP. For - 4% to + 5% road gradients, the percentage variation of carbon dioxide emissions is linearly correlated with variations in slope. The same correlation for nitrogen oxides is vehicle dependent and well explained by a second-order polynomial function.
引用
收藏
页码:586 / 593
页数:8
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