Abstract |
Since Vespa scooter models were of interest to EPA because of their unique body design (and thus possibly different road load characteristics) and because of recent advertised claims of lower pollutant levels, tests were performed at the EPA Emissions Laboratory in Ann Arbor, Michigan. The test procedure for this motorcycle consisted of coast down tests to determine road load horsepower, followed by emission tests. The modified driving cycle for motorcycles with displacements less than 170cc was used. The motorcycle was carried through all portions of the driving cycle. The average mass emissions along with the proposed interim and final motorcycle emission standards are presented. |