Authors :
Umeuzuegbu J.C; Ezennajiego E.E; Onukwuli O.D
Volume/Issue :
Volume 5 - 2020, Issue 11 - November
Google Scholar :
http://bitly.ws/9nMw
Scribd :
https://bit.ly/3aEpTBB
Abstract :
Biodiesel is emerging as the promising choice
for compression ignition engine due to its renewable,
environmentally friendly and biodegradable nature, with
superior emission characteristics. However, the true test of
the suitability of biodiesel in a diesel engine lies with
engine evaluated performance and emission test. This
research work focused on the engine performance
evaluation and emission test of gmelina seed oil fatty acid
methyl ester (GSOFAME) or bidiesel on diesel engine.
GSOFAME was produced using methanol and sodium
hydroxide (NaOH) catalyst. The physiochemical property
of the biodiesel was determined based on American
standards for testing and materials (ASTM). The engine
performance was carried out on Perkins 4:108 4 stroke
diesel engine using GSOFAME, diesel and their blends.
The fuel properties of the GSOFAME which are within the
ASTM standard limits were determined as density
874kgm3
, kinematic viscosity 4.975mm2
s
-1
at 400C, cetane
number 64.2, flash point 1780C, cloud point 5
0C, pour
point 30C, acid value 0.24mgKOHg-1
, calorific value
38.33MJ/Kg. The engine performance evaluation revealed
that the BSFC of the blends decreased with increase in
engine speed and attained minimum value at 1600rpm for
B0-B40 and 1800rpm for B60-B100 and then started
increasing with increase in speed. The BTH and BP
increased with increase in engine speed and attained
maximum values at1600rpm for B0-B40 and 1800rpm for
B60-B100 and then started decreasing with increase in
engine speed. Again the BSFC decreased with increase in
engine load and attained minimum value at 70% of the
maximum load or 70kg and then started increasing with
increase in load. The BTH and BP increased with increase
in engine load and peaked at 70% of the maximum load
when they started decreasing with increase in load. The
results showed that the BSFC, BTH and BP of B20 are
close to that of B0. However the BTH of B20 and blends
with less biodiesel fraction proved superior to that of B0
by exhibiting higher BTH. The engine emission test shows
that CO, HC and NOx emission increased with increase in
load for B0-B100. At a specific load, CO and HC decrease
with increase biodiesel fraction while NOx emission
increased with increase in biodiesel fraction. The overall
result shows that B20 and blends with less biodiesel
fraction can be used directly in a diesel engine without any
engine modification. Again the low emission from
GSOFAME shows that it will have minor negative impact
on the environment
Keywords :
Engine Emission Test, Engine Performance Test, Engine Load, GSOFAME, Transesterification
Biodiesel is emerging as the promising choice
for compression ignition engine due to its renewable,
environmentally friendly and biodegradable nature, with
superior emission characteristics. However, the true test of
the suitability of biodiesel in a diesel engine lies with
engine evaluated performance and emission test. This
research work focused on the engine performance
evaluation and emission test of gmelina seed oil fatty acid
methyl ester (GSOFAME) or bidiesel on diesel engine.
GSOFAME was produced using methanol and sodium
hydroxide (NaOH) catalyst. The physiochemical property
of the biodiesel was determined based on American
standards for testing and materials (ASTM). The engine
performance was carried out on Perkins 4:108 4 stroke
diesel engine using GSOFAME, diesel and their blends.
The fuel properties of the GSOFAME which are within the
ASTM standard limits were determined as density
874kgm3
, kinematic viscosity 4.975mm2
s
-1
at 400C, cetane
number 64.2, flash point 1780C, cloud point 5
0C, pour
point 30C, acid value 0.24mgKOHg-1
, calorific value
38.33MJ/Kg. The engine performance evaluation revealed
that the BSFC of the blends decreased with increase in
engine speed and attained minimum value at 1600rpm for
B0-B40 and 1800rpm for B60-B100 and then started
increasing with increase in speed. The BTH and BP
increased with increase in engine speed and attained
maximum values at1600rpm for B0-B40 and 1800rpm for
B60-B100 and then started decreasing with increase in
engine speed. Again the BSFC decreased with increase in
engine load and attained minimum value at 70% of the
maximum load or 70kg and then started increasing with
increase in load. The BTH and BP increased with increase
in engine load and peaked at 70% of the maximum load
when they started decreasing with increase in load. The
results showed that the BSFC, BTH and BP of B20 are
close to that of B0. However the BTH of B20 and blends
with less biodiesel fraction proved superior to that of B0
by exhibiting higher BTH. The engine emission test shows
that CO, HC and NOx emission increased with increase in
load for B0-B100. At a specific load, CO and HC decrease
with increase biodiesel fraction while NOx emission
increased with increase in biodiesel fraction. The overall
result shows that B20 and blends with less biodiesel
fraction can be used directly in a diesel engine without any
engine modification. Again the low emission from
GSOFAME shows that it will have minor negative impact
on the environment
Keywords :
Engine Emission Test, Engine Performance Test, Engine Load, GSOFAME, Transesterification
