engine to some extend. The fluctuations of NOX emissions
are not remarkable, when E10 is used. Hydrocarbon species
except ethanol, acetaldehyde and ethylene emissions are
decreased somewhat from ethanol–gasoline blends-fueled
motorcycle engine relative to gasoline-fueled motorcycle.
Additionally, the effect of ethanol addition to gasoline on
the improvement of aromatic emissions is not obvious.
For potential application to ethanol–gasoline-fueled
vehicles, the extensions of this study are to undertake
measures (such as prepare catalytic converters) for not only
the control of HC and NOX but also of hydrocarbon species,
such as ethanol, acetaldehyde, aromatics and so on.