Affiliation:
1. Dayananda Sagar College of Engineering, Department of Automo
2. National Institute of Technology Karnataka, Department of Me
3. RV Institute of Technology and Management, Department of Mec
Abstract
<div class="section abstract"><div class="htmlview paragraph">In this work, the impact of hexanol/diesel/biodiesel blend on engine
characteristics of a common rail direct injection (CRDI) diesel engine was
studied. Biodiesel is more viscous in nature and higher cetane count, hexanol
has a lower viscosity and cetane count. The drawbacks of both biodiesel and
hexanol can be overcome by blending both hexanol and biodiesel with diesel fuel
in the right proportion. Tests were carried out using a 4-stroke CRDI engine
with two cylinders. Biodiesel and 1-hexanol were blended in a ratio of 10% each
by volume with diesel and compared with B10D90 and B20D80 blends. It was noted
that the addition of hexanol enhances the combustion characteristics of the
engine. At 20% load H10B10D80 showed71.34 bar which is highest compared to other
fuels in the test. The blends had a positive effect on emissions, there was
drastic reduction in NOx was noticed, also HC and CO emission was lower than
diesel emissions. The lowest CO, and HC emission is obtained for H10B10D80,
which is 66%, 92% lower at 60% load compared to baseline readings. However, the
blend had a slight negative effect on performance in contrast to diesel. The
higher latent heat of vaporization of hexanol led to low temperature combustion
contributing to the lowest NOx emissions. The combination of both hexanol and
Pongamia biodiesel with diesel showed an effective reduction in greenhouse
gases. Which will also reduce the dependency on fossil fuels. The lower carbon
content of 1-hexanol contributes towards carbon neutrality. Overall, the hexanol
and biodiesel are sustainable alternatives to the diesel fuel.</div></div>