Evaluating mobile monitoring of on-road emission factors by comparing concurrent PEMS measurements.

ABSTRACT: Many countries have adopted portable emissions measurement system (PEMS) testing in their latest regulations to measure real-world vehicular emissions. However, its fleetwide implementation is severely limited by the high equipment costs and lengthy setup procedures, posing a need to develop more cost-effective, efficient emission measurement methods, such as mobile chasing tests. We conducted conjoint PEMS-chasing experiments for twelve heavy-duty diesel vehicles (HDDTs) to evaluate the accuracy of mobile measurement results. Two data processing approaches were integrated to automate the calculations of fuel consumption-based emission factors of nitrogen oxides (NO_X). With a total of 245 plume chasing tests conducted, and then averaged by vehicle and road types, we found that t

SUBMITTER: Wang H 

PROVIDER: S-EPMC7778828 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature