Record Display for the EPA National Library Catalog
RECORD NUMBER: 100 OF 108Main Title | Summary of ECTD Emission Laboratory Correlation Programs Fiscal Year 1974. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Author | Lowery., Richard E. ; | |||||||||||
CORP Author | Environmental Protection Agency, Ann Arbor, Mich. Standards Development and Support Branch. | |||||||||||
Year Published | 1974 | |||||||||||
Report Number | CORR-74-10; | |||||||||||
Stock Number | PB-270 592 | |||||||||||
Additional Subjects | Motor vehicles ; Exhaust emissions ; Data acquisition ; Laboratories ; Methodology ; Test facilities ; Correlation ; Dynamometers ; Dynamic tests ; Regression analysis ; Vehicles ; Variations ; Accuracy ; Data processing ; Test methods | |||||||||||
Holdings |
|
|||||||||||
Collation | 21p | |||||||||||
Abstract | This report summarizes the results of ECTD 1974 laboratory vehicle emission correlation programs, with conclusions relative to the state of current emission laboratory correlation. Data are presented and analyzed which show site-to-site correlation demonstrated during ECTD programs. Regression analyses are presented which detect the effect of barometric pressure and ambient humidity on correlation results. Other factors influencing the degree of site-to-site correlation, namely dynamometer characteristics, vehicle variability, CVS accuracy, and gas analysis accuracy, are presented and discussed. |