Second by second exhaust emissions data recorded during federal test procedures UDDS runs (for microcomputers). Data file
Second by second emission data for 80 FTP (Federal Test Procedures) UDDS Runs on 13 vehicles are included. Product gives the results of analyses using real-time dynamometer test emissions data from 13 passenger cars to examine variations in emissions during different speeds or modes of travel. The resulting data provided a way to separately identify idle, cruise, acceleration, and deceleration emissions for examining how emissions differ by vehicle speed during the cruise mode. To select a set of vehicles for the study, the hydrocarbon (HC)/time relationship was established for several vehicles operating on summer-grade fuel. Federal Test Procedure results were then produced and examined to identify normal emitters (clean vehicles). After these vehicles were selected, their second-by-second emission characteristics were analyzed. The FTP runs for cold start, hot start, and hot stabilized emissions (Bags 1, 2, and 3 of the FTP) were performed for each of the four driving cycles-acceleration, deceleration, idling, and cruise-and the fraction of overall emissions contributed by each mode was computed for the warmed-up portion of the driving cycle. A protocol was then developed for review of the FTP real-time data. Study results showed significant emissions differences relating to the travel mode.
- Research Organization:
- Environmental Protection Agency, Research Triangle Park, NC (United States). Air and Energy Engineering Research Lab.
- OSTI ID:
- 6956654
- Report Number(s):
- PB-94-501780/XAB
- Resource Relation:
- Other Information: Disk 1 through 3 contains data. Disk 4 contains Lotus 123 Spreadsheet. Files are compressed
- Country of Publication:
- United States
- Language:
- English
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