EVALUATING ENVIRONMENTAL EFFECTS OF BIOETHANOL-GASOLINE BLENDS IN USE A SI ENGINE

Year 2016, Issue: 4, 36 - 41, 01.12.2016

Ahmet Necati Özsezen

Abstract

Bioethanol produced from sugarcane is anticipated to make a major input on transportation fuel markets. In this
paper, the environmental effects of bioethanol-gasoline blends were evaluated in use a spark ignition (SI) engine.
The bioethanol used in this study was produced by a sugar refinery in Turkey. To determine the exhaust
emissions of bioethanol and gasoline blends, SI engine operated at different engine test conditions, and also the
test results of bioethanol-gasoline blends compared with those of pure gasoline. The experimental results showed
that when the test engine was fueled with bioethanol-gasoline blends, CO and unburned HC emissions
decreased, but CO2 and NOx emissions increased. At the same time, the results indicated that the air-fuel
equivalence ratio increased with the increase of bioethanol percentages in fuel blends.

Keywords

Bioethanol, spark ignition engine, performance, emission