1977-02-01

Exhaust Emission Levels of In-Use 1975 & 1976 California Automobiles 770169

Exhaust emission data for 1975 and 1976 California automobiles were generated, using the Federal Test Procedure, at the time of their delivery and after the vehicle engines had matured.
The emission test results indicate the degree of emissions control acheived compared to pre-1966 uncontrolled automobiles. Also differences between green and mature engines and the statistical differences in the test data are described.
Conclusions discuss statistical trends of the results and how the data relates to current and possible future vehicle emissions, ambient air quality reductions and other related trade-off factors.

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