Highlights We measured urban logistics transportation vehicles by a PEMS system. The emission concentrations show strong relationship with real-world driving conditions. The gaseous and particulate emission rates show growth trends with the increase of VSP and speed in real-world. The PM2.5 concentrations increase with the power ratings and decrease slightly at higher engine ratings.
Abstract On-road vehicle tests of three heavy duty diesel trucks were conducted by a portable emission measurement system (PEMS) in Chengdu, China. SEMTECH-ECOSTAR provided by Sensors Inc. was employed to detect gaseous emissions and MI2, an emissions measuring instrument powered by the Pegasor Particulate Sensor (PPS) was used to detect particulate emissions during the tests. The impacts of speed, acceleration and engine load on emissions were analyzed. The average nitrogen oxides (NOx) emission factors of the heavy duty diesel truck (HDDT), medium-duty diesel truck (MDDT), light duty diesel truck (LDDT) were 7.29, 5.29 and 5.53g/km. The particulate emission factors were 0.60, 0.30 and 0.14g/km respectively, higher than the similar reported in the previous studies. Both gaseous and particulate emission exhibit significant correlations with the change in vehicle speed, acceleration and power demand. The highest emission was generally in high VSPs and higher loads. High engine load caused by aggressive driving was the main factor of high emissions for the vehicles on real-world conditions.
Characteristics of gaseous and particulate pollutants exhaust from logistics transportation vehicle on real-world conditions
2015-01-01
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
REAL-TIME EMISSIONS OF GASEOUS POLLUTANTS FROM VEHICLES UNDER HETEROGENEOUS TRAFFIC CONDITIONS
DOAJ | 2023
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