EVALUATION OF CVS TEST PROCEDURES

The effect of CVS test parameters other than temperature on exhaust emissions was determined. Dynamometer inertia weight, road load horsepower, vehicle engine tune adjustments and smoothing the emission test driving schedule parameters were evaluated. Actual vehicle road load horsepower was measured by coast-down time and engine manifold vacuum. Tests were performed on 50 1968 through 1975 model year vehicles. 1975 and Modified 1972 Federal Test Procedures were used. Observed differences in exhaust emission and fuel economy test results were tested for statistical significance.

• Corporate Authors:

  Automotive Environmental Systems, Incorporated

  7300 Bolsa Avenue
  Westminster, CA  United States  92683

  California Air Resources Board

  1001 I Street, P.O. Box 2815
  Sacramento, CA  United States  95812
• Authors:
  • Runner, T
• Publication Date: 1976-2

Media Info

• Pagination: 136 p.

Subject/Index Terms

• TRT Terms: Air pollution; Automobiles; Carbon monoxide; Data tables; Dynamometers; Exhaust gases; Fuel consumption; Gas analysis; Horsepower; Ignition systems; Information processing; Maintenance; Measuring instruments; Monitoring; Nitric oxide; Nitrogen oxides; Quality control; Regulations; Spark ignition engines; Standards; Statistical analysis; Testing; Tests
• Uncontrolled Terms: Experimental design; Monitors
• Subject Areas: Data and Information Technology; Design; Energy; Highways; Law; Maintenance and Preservation; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 00136511
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: Final Rpt., ARB-R-4-726-76-42
• Contract Numbers: ARB-4-726
• Files: TRIS
• Created Date: Jul 13 1976 12:00AM