Abstract: Ethanol is an alcohol, the same found in beer and wine. It is made by fermenting any biomass high in carbohydrates (starches, sugars, or celluloses) through a process similar to brewing beer. Ethanol is mostly used as a fuel additive to cut down a vehicle's carbon monoxide and other smog-causing emissions. But flexible-fuel vehicles, which run on mixtures of gasoline and up to 85% ethanol, are now available. This paper deals with the use of gasoline-ethanol mixtures at a small four-stroke engine of internal combustion that is used for the movement of a small alternative generator. The mixtures that were used are: gasoline, gasoline-10%ethanol, gasoline-20%ethanol, gasoline-30%ethanol, gasoline-40%ethanol, gasoline-50%ethanol, gasoline-60%ethanol, gasoline-70%ethanol gasoline-80%ethanol gasoline-90%ethanol and 100% ethanol. During the use of these mixtures it was observed CO and HC emissions decrease when the percentage of ethanol in the fuel was increased, without any engine malfunction and under different load conditions (without load conditions and under full electrical load conditions). There was an exception with the mixtures: gasoline-90%ethanol and 100%ethanol for which the engine malfunctioned and the HC emissions were increased. It is important to mention that the ethanol that was used was 95ο alcoholic degrees and not 100% pure ethanol. Furthermore, during the use of the mixtures of gasoline-ethanol there was a small increase of fuel consumption when the percentage of the ethanol in the fuel was increased.

 

Brief Biography of the Speaker:
Born in Athens, Greece
Citizenship: Greek
e-mail: xarapat@agro.duth.gr
Titles

• Mechanical Engineer, Ph.D. (Democitus University of Thrace-Greece), Assoc. Professor on University of Thrace-Greece
  Present Responsibilities

• Member of Technical Chamber of Greece

• Member of Electrical and Mechanical Engineering Association.

• Member of Combustion Institute of Greece
  Participations

Took part in many research programs, which referred to biofuels, gas emissions, antipollution technology.
Research domains
Biofuels and their use in internal combustion engines, power variation from the use of biofuels, gas emissions and mechanical damages.