The Evaluation of Retrofit Devices for the Improvement of Fuel Economy and Emissions

Document Number: 840498

Date Published: February 1984

Author(s):
Merrill W. Korth - U.S. Environmental Protection Agency, Ann Arbor, MI
J. T. White III - U.S. Environmental Protection Agency, Ann Arbor, MI
Ralph C. Stahman - U.S. Environmental Protection Agency, Ann Arbor, MI

Abstract:
The U.S. Environmental Protection Agency has evaluated and reported on the effectiveness of fuel economy retrofit devices for many years. Originally, such products were marketed as emission improvers but with pressures of the oil embargo in the early 1970's most devices began to be promoted to benefit fuel economy. For the most part, such devices are not effective and do not measure up to the claims made by their advertisers. Of over ninety devices evaluated by EPA, only five have improved fuel economy without increasing emission levels. Four other devices modestly improved fuel economy but caused emissions to increase to the point that installation of the devices was determined by EPA to be tampering under the provisions of the Clean Air Act. In general, even those few devices that improved fuel economy were not cost effective

File Size: 1331K
Product Status: In Stock

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