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Mobile Source Instrumented Vehicle Program
The objective of this program is to characterize mobile source emissions which are one of the largest sources of tropospheric ozone precursor emissions (CO, NOx, and Volatile Organic Compounds (VOCs)) in the U.S. Due to the dynamic operation of motor vehicles, emissions are highly variable as a function of the mode of operation which is influenced by the driver, the type of vehicle, the roadway grade and the passenger or other load carried or pulled by the vehicle.
The research test vehicle will be used to: 1) validate and improve algorithms in the Mobile Emissions Assessment System for Urban and Regional Evaluation (MEASURE) model as applied to the Research Triangle Park area; 2) correlate vehicle emissions data collected with remote sensing instrumentation and dynamometer facilities.
Research Test Vehicle
The research test vehicle is a modified 1993 Chevrolet Lumina Euro. Modifications have included the installation of gaseous analyzers for the measurement of tail pipe emissions of carbon monoxide, carbon dioxide, oxygen, hydrocarbons, and oxides of nitrogen. Control and operation of the gaseous analyzers, AC/DC power supplies, and data acquisition are conducted from within the back seat area. Moisture removal, calibration gas control, and sample controls are located in the trunk. Engine parameter data are collected for analysis with the emissions.
Additional U.S. EPA Resources
EPA's Office of Mobile Sources, Ann Arbor
Additional Resources Outside the U.S. EPA Domain
Georgia Institute of Technology: