HISTORICAL DEVELOPMENT OF HEAVY DUTY GASOLINE ENGINE DYNAMOMETER EMISSIONS TEST CYCLE AND EMISSIONS STANDARD

This record of the development of Federal regulations covering heavy-duty (HD) gasoline-fueled engines also seeks to answer the following questions: how stringent are truck emission standards? have truck emission standards reduced truck air pollution? how do federal regulations control truck emissions? does federal emission test procedure sample engine emissions representative of those emitted during actual use of trucks? and why are not trucks tested on a chassis dynamometer like passenger cars? Passenger cars are similarly used and average about the same passenger load. Trucks on the other hand do not have such similarities. The basis for truck engine emission is horsepower-hours, and the emission test measures the grams of emissions produced while the engine is accomplishing a given amount of work. The implementation of more stringent standards for heavy trucks is planned. The results of the Ethyle survey, Survey of Truck and Bus Operating Modes in Several Cities is outlined, and the conclusions drawn are listed. Highlights of the 1975 model year federal truck gasoline engine emission testing regulations are presented, and truck emission results are compared with those of passenger cars.

  • Corporate Authors:

    Motor Vehicles Manufacturers Association

    320 New Center Building
    Detroit, MI  United States  48202
  • Publication Date: 1975

Media Info

  • Features: Appendices; Figures; Tables;
  • Pagination: 37 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00133954
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 13 1976 12:00AM