Worldwide view of automotive emission standards and their impact on air quality and fuel consumption

This paper is no 79002. Current automotive emission standards, as well as future standards whether mandated, proposed, or recommended in major industrial areas of the world are compared graphically to the emission levels of cars before emission standards were imposed. Studies of the relationship between exhaust emission levels and air quality coupled with a cost benefit analysis show that "common sense" levels of: co = 16g/km, (26g/mile) hc = 1.7G/km, (2. 7g/mile) nox = 1.9G/km, (3.0G/mile) are justified in terms of meeting realistic ambient air quality goals. Analysis of US epa and Canadian new car certification data and US epa consumer car surveillance data shows that Canadian non catalytic cars have lower fuel and overall energy consumption than cars equipped with catalytic devices. Catalytic cars have slightly lower energy consumption than non catalytic cars when meeting the more stringent US emission standards. Non catalytic cars were found to provide lower co, probably lower hc, and equal nox emissions in service compared with catalytic cars. Thus, non catalytic cars would be most advantageous in meeting the "common sense" emission levels in service (a).


  • English

Media Info

  • Pagination: 46P

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Filing Info

  • Accession Number: 01438340
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Aug 24 2012 9:30PM