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Emission Factor and Fuel Economy Calculation Using Vehicle Inspection and Maintenance Program  

Lee, Tae-Woo (National Institute of Environmental Research)
Keel, Ji-Hoon (National Institute of Environmental Research)
Park, Jun-Hong (National Institute of Environmental Research)
Eom, Myoung-Do (National Institute of Environmental Research)
Kim, Jong-Choon (National Institute of Environmental Research)
Lee, Dae-Yup (Department of Mechanical Engineering, Inha University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.17, no.5, 2009 , pp. 97-106 More about this Journal
Abstract
An objective of this study is to give practical information that could be used for calculating pollutant emission factors and fuel economy from Korean Inspection & Maintenance program, which has been using steady state acceleration simulation mode. Concentration results from I/M test is adequately converted to mass emission factors and fuel efficiency data, which have unit of g/km and km/L, respectively. Exhaust volume flow(EVF), which is for converting emission result from concentration to mass, is measured by tracer method in various vehicle speed - power condition. It is found that there is an apparent second order relationship between EVF and vehicle inertia weight. EVF is expressed in function of vehicle inertia weight in order to estimate EVF in I/M site without measuring device. Converted mass emission results from measured EVF and raw emission analyzer show a satisfactory agreement with those from conventional CVS-bag type measurement system. Mass emission factors and fuel efficiency from measured EVF and estimated EVF also show good agreement to each other. Considering that an I/M program has great advantages to recruit-based emission test in terms of the number of test vehicle, the information in this study can be used for developing an alternative procedure to collect more various data to establish national database of mobile emission factors and fuel economy, even though the driving cycle in I/M program is steady state cycle rather than transient cycle.
Keywords
Emission factor; Fuel economy; Inspection and maintenance, I/M; Exhaust volume flow, EVF; Acceleration simulation mode, ASM;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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