Record Display for the EPA National Library Catalog
RECORD NUMBER: 31 OF 4772
|OLS Field Name||OLS Field Data|
|Main Title||A guide to the emissions certification procedures for alternative fuel aftermarket conversions /|
|CORP Author||USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States). ;Environmental Protection Agency, Washington, DC (United States).|
|Publisher||National Renewable Energy Laboratory ; National Technical Information Service, U.S. Dept. of Commerce,|
|Report Number||NREL/TP-540-22757; AC36-83CH10093|
|Subjects||Natural gas vehicles--Pollution control devices--Certification--United States. ; Motor vehicles--Motors--Modification--Certification--United States. ; Motor vehicles--Motors--Exhaust gas--Standards ; Internal combustion engines, Spark ignition--Alternate fuels ; Air--Pollution--Law and legislation ; Automobiles--Fuel systems--Certification|
|Additional Subjects||Vehicles ; Fuel Substitution ; Natural Gas ; Liquefied Petroleum Gases ; Certification ; Pollution Control Equipment ; Recommendations ; EDB/330700 ; EDB/330800 ; EDB/290300|
|Collation||vi, 61 p. : ill. ; 28 cm.|
Emissions certification is still relatively new to the aftermarket vehicle conversion industry. Many in the industry think that as soon as a vehicle is converted to operate on compressed natural gas (CNG) or liquefied petroleum gas (LFG), it automatically runs as clean as or cleaner than it did on the conventional fuel. However, recent studies have shown that aftermarket conversions may not always reduce emissions. To achieve emissions benefits, the conversion equipment must be designed and calibrated specifically for the engine and emissions control system on which it has been installed, and the installation and setup must be performed so as to not adversely affect the vehicle's original emissions performance. The reason for certification, then, is to ensure that these criteria are met, that the vehicle continues to perform properly, and that it continues to satisfy all appropriate emissions standards throughout its useful life. The authors have prepared this guide to help equipment manufacturers, distributors, and installers understand the emissions certification process for aftermarket conversions. The guide gives an overview of the certification requirements established by the US EPA and by the state of California.
"January 1998." "U.S. Department of Energy (DOE), U.S. Environmental Protection Agency (EPA). Includes bibliographical references (p. 59-61).