Record Display for the EPA National Library Catalog
RECORD NUMBER: 1424 OF 4800Main Title | Emission Laboratory Correlation Study Between EPA and Audi-NSU Auto Union. | |||||||||||
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CORP Author | Environmental Protection Agency, Ann Arbor, Mich. Standards Development and Support Branch. | |||||||||||
Year Published | 1974 | |||||||||||
Report Number | CORR-74-8; | |||||||||||
Stock Number | PB-270 563 | |||||||||||
Additional Subjects | Exhaust emissions ; Motor vehicles ; Dynamic tests ; Air pollution ; Test facilities ; Comparison ; United States ; West Germany ; Hydrocarbons ; Carbon monoxide ; Nitrogen oxides ; Dynamometers ; Correlations ; Differences ; Research vehicles | |||||||||||
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Collation | 15p | |||||||||||
Abstract | This report presents the results of a laboratory correlation study between EPA and Audi-NSU Auto Union of Germany. An attempt is made to isolate equipment, procedure, and ambient differences which affect the degree of emission result correlation. A research vehicle was tested at both Audi and EPA with regard to HC emission correlation, with attention to some discrepancies in measurements of CO and NOx. Differences in dynamometers and ambient conditions seemed to be the most important factors affecting the degree of emission correlation. |