||An investigation of remote sensing devices for chemical characterization of motor vehicle exhaust : final report /
Jones, Julian W. ;
Ripberger, C. T. ;
||ARCADIS Geraghty and Miller, Inc., Research Triangle Park, NC. ;Remote Sensing Technologies, Inc., Tucson, AZ. ;Hughes Santa Barbara Research Center, CA.;Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div.
|| National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Automobiles--Motors--Exhaust gas--Measurement. ;
Motor vehicles--Motors--Exhaust gas--Measurement. ;
Remote sensing. ;
Air pollution sampling ;
Exhaust emission measurement ;
Vehicle air pollution ;
Remote sensors ;
Mobile pollutant sources ;
Chemical analysis ;
Exhaust composition ;
Exhaust gases ;
Carbon monoxide ;
Nitrogen oxides ;
Driving system effect on exhaust emissions ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||xiii, 79 pages : illustrations ; 28 cm
||The report summarizes results of tests to (1) evaluate the accuracy and precision of two different remote sensing devices (RSDs) for measuring carbon monoxide (CO), hydrocarbons (HCs), and nitric oxide (NO), and (2) evaluating the capabilities of three RSDs for characterizing fleet emissions of NO. 'Puff' tests (in which simulated motor vehicle exhaust gas was repeatedly injected in bursts or puffs into the RSDs) were conducted. The accuracy and precision of data from these measurements, which showed a generally linear response over a range of concentrations, were in the order CO > HCs > NO. Subsequently, three vehicles were driven at constant speed on a dynamometer and on a test track. The average emissions data measured by the three RSDs at the track, when compared to the dynanmometer emissions data (which were used as the standard), in general showed just the opposite result; i.e., NO > HCs > CO. However, the test track data showed a considerable amount of variation. The three RSDs were tested for several hours on a freeway ramp in Raleigh, NC.
||Final report. "December 1998." Includes bibliographical references (pages 34-35). Microfiche.
||Research Triangle Park, NC:
||Prepared in cooperation with Remote Sensing Technologies, Inc., Tucson, AZ. and Hughes Santa Barbara Research Center, CA. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div.
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