INVESTIGATION AND ASSESSMENT OF LIGHT-DUTY-VEHICLE EVAPORATIVE EMISSION SOURCES AND CONTROL

This study has assessed the effectiveness of current Evaporative Control Systems (ECS) and has shown the feasibility of various hardware approaches which control evaporative emissions to a very low level. The performance of ECS's in current use was evaluated by using the Sealed Housing for Evaporative Determinations (SHED) procedure on twenty 1973-75 cars with representative control systems. The measured emissions ranged from 0.5 to 30.6 grams per test, and the twenty car average was 8.7 grams per test. Hardware was then developed to improve ECS performance. Six production vehicles were modified to demonstrate the feasibility of improving current systems. These modifications were successful in lowering the evaporative emissions to less than 2.0 grams per test for each of the six modified vehicles. This six car group consisted of vehicles manufactured by General Motors, Ford, Chrysler, American Motors, Volvo and Mazda; and the costs of required hardware has been estimated at $2, $2, $6, $2, $2, and $25, respectively.

• Corporate Authors:

  Exxon Research and Engineering Company

  US Highway 1 and Park Avenue
  Linden, NJ  United States  07036

  Environmental Protection Agency

  Emission Control Technology Division, 2565 Plymounth Road
  Ann Arbor, MI  United States  48105
• Authors:
  • CLARKE, P J
• Publication Date: 1976-6

Media Info

• Pagination: 150 p.

Subject/Index Terms

• TRT Terms: Air filters; Air quality management; Automobiles; Carburetors; Delivery vehicles; Equipment; Evaporation; Evaporative emissions; Exhaust gases; Fuel tanks; Hydrocarbons; Light trucks; Pollutants
• Old TRIS Terms: Air pollution control devices; Evaporation control; Evaporative emission control
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00143663
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: EPA/460/3-76/014 Final Rpt.
• Contract Numbers: EPA-68-03-2172
• Files: TRIS
• Created Date: Nov 17 1977 12:00AM