The Effect of Electromagnetization Fuel using Bioethanol-RON 90
Blends on Exhaust Emission Engine 125 CC
Tatun H. Nufus, Isnanda Nuriskasari, Arifia Ekayuliana, Andi Ulfiana, Emir Ridwan, Haidir Juna,
Irfan Choiri, Sri Lestari Kusumastuti
Mechanical Engineering and Electro Engineering, Politeknik Negeri Jakarta, Depok, Indonesia 16425
Keywords: Combustion, Electromagnet, Emission, Bioethanol,
RON 90.
Abstract: Research related to using bioethanol as a renewable energy that can be fuel substitution for gasoline with
hopefully can decreasing exhaust emission has been carried out by researchers. Beside that, most of the
researchers using magnetic fields to improve the quality of combustion for decreasing exhaust CO emission.
Therefore, the objective of this research was to determine the effect of electromagnetization fuel using
Bioethanol-RON 90 blends on exhaust emission engine 125 CC. The independent variable of the study is the
variation of the fuel composition based on percent volume and engine speed (RPM) while the dependent
variable is the exhaust gas emissions. Giving the electromagnetic effect causes the combustion efficiency
which is shown by the the reduced amount of incomplete combustion gas emissions. The combustion
efficiency occurs due to the effect of the phenomenon of fuel magnetization in the combustion chamber
causing polarization (due to magnetic induction) on hydrocarbon molecules. The results of this study is E20
(20% Bioethanol blend with 80% RON 90) is the best composition fuel. Using E20 with exposure
electromagnet at 3000 rpm can decrease approximately 47.37% carbon monoxide emission, increase
approximately 26% carbon dioxide, and decrease approximately 33.2 % oxygen emission.
1 INTRODUCTION
The incomplete combustion process is a problem
encountered in efforts to improve the performance of
gasoline engines. Poor fuel quality is one of the
factors causing imperfections the combustion system.
Various methods are used to solved that problems,
one of the method is by using environmentally
friendly biofuels such as bioethanol. The
characteristics of bioethanols as a fuel have the
advantages, it is low greenhouse effect, it can
decrease gas emission by up to 50% compared to
fossil fuel, ability to blend with gasoline
homogenously (Alper et al. 2015). Using the
bioethanol blended with gasoline was better than pure
gasoline because its renewability, less toxicity.
(Wibowo et al. 2019). Despite all those benefits, bio-
ethanol has some drawbacks due to its high viscosity
and octane number where the combustion process on
standard/gasoline engines cannot run completely. The
solution to this problem can be done by mixing
gasoline with bioethanol at certain levels and utilizing
electromagnetic fields.
The electromagnetic field installed on the fuel
pipe before the injector can improve the quality of
combustion which is indicated by decreasing the
emission levels of CO, NO and HC exhaust gases
(Nufus, Praeko, Setiawan, & Hermawan, 2017;
Kolhe, Shelke, & Khandare, 2014; Chaware 2015;
Okoronkwo et al. 2010). The electromagnetic field on
Hydrocarbon fuel can pulling away and stretching the
bond between molecules, even though the bonds
between H-C atoms are not separated from each
other, the strength of the bonds will be slightly
weakened due to stretching bond so that the hydrogen
and carbon atoms will be more easily attracted to
oxygen in the combustion process. Resulting in more
complete combustion and reduced levels of exhaust
emissions (Faris et al. 2012).
Based on those explanations, the objectivity of
this research is to study the effect of
electromagnetization fuel using Bioethanol-RON 90
blends on exhaust emission engine 125 CC. The
independent variable in this research is variation
composition fuel to analyze the ideal composition of
the mixture of bioethanol and RON 90 in order to
obtain optimal gasoline engine combustion
Nufus, T., Nuriskasari, I., Ekayuliana, A., Ulfiana, A., Ridwan, E., Juna, H., Choiri, I. and Kusumastuti, S.
The Effect of Electromagnetization Fuel using Bioethanol-RON 90 Blends on Exhaust Emission Engine 125 CC.
DOI: 10.5220/0010508400230026
In Proceedings of the 9th Annual Southeast Asian International Seminar (ASAIS 2020), pages 23-26
ISBN: 978-989-758-518-0
Copyright
c
2021 by SCITEPRESS – Science and Technology Publications, Lda. All rights reserved
23
performance, refer to the result of exhaust gas
emissions from engines which is affected by
electromagnetic field treatment in the fuel line.
2 RESEARCH METHOD
The engine that used for the research is a gasoline
motorcycle with a 125 cc cylinder capacity injection
system, engine specifications shown in Table 1. The
strong magnetic field used was 1419 Gauss. While the
fuels used are E0 (100% RON 90), E10 (10%
bioethanol and 90% RON 90), E15 (15% bioethanol
and 85% RON 90), E20 (20% bioethanol and 80%
RON 90), E25 (25% bioethanol and 75% RON 90)
and E30 (30% bioethanol and 70% RON 90). The fuel
specifications used are presented in Table 2. The test
were performed at different engine speeds of 1500,
2000, 2500, and 3000 rpm.
The research begins by calibrating the equipment
needed, examining gasoline engine components such
as lubricating oil, lubricating oil filters and material
filters. Next, all the instruments are strung together as
shown in Figure 1. Gas emission from mixed fuel
combustion will be characterized using gas analyzer
Stargas 898.
Table 1. Gasoline Engine Specifications (Yamaha, 2020)
Engine Type 4 Stroke, SI Engine,
DOHC, Air Coole
d
Bore x Stroke 52.4 x 57.9 mm
Volume 125 cc
Compression Ratio 9.5 : 1
Maximum Powe
r
7 kW / 8000 rpm
Maximum Torque 9.6 Nm / 5500 rp
m
I
g
nition S
y
stem TCI/ Fuel In
j
ection
Table 2. Fuel Specifications (Agathou & Kyritsis, 2012)
Propert
y
RON 90 Bioetanol
Formula (liquid) C
8
H
18
C
2
H
5
OH
Molecular
wei
g
ht (
g
/mol)
11.15 46.07
Densit
(k
/m3) 765 785
Heat of
vaporization
(kJ/k
g
)
305 840
Stoichiometric
air-fuel ratio by
mass
14.6 9
Research octane
numbe
r
90 108.6
Figure 1 Installation the Instruments
3 RESULTS AND DISCUSSION
Clusters in hydrocarbons (due to non-polar) cause the
phenomenon of incomplete combustion due to the
difficulty of oxygen entering the hydrocarbons, thus
producing CO gas and carbon residues both in
exhaust gas and in the combustion chamber walls..
Therefore, one way to analyze the effectiveness of
perfect combustion due to the effects of fuel
magnetization is by emission testing. Based on Figure
2, it can be seen that the effect of the fuel
magnetization phenomenon on the combustion
chamber causes polarization (due to magnetic
induction) on hydrocarbon molecules, so that what
used to be a cluster (non-polar) becomes a decluster.
Figure 2. Fuel Magnetization Process in the Combustion
Chamber
Declusterization of hydrocarbon molecules due to
the effect of magnetic induction will cause a
reduction in exhaust emissions from incomplete
combustion, such as (CO, CO
2
, HC, and O
2
).
Emission test results on the combustion of gasoline
RON 90 with the variation of bioethanol blended 0%,
10%, 15%, 20%, 25%, and 30%, with the
phenomenon of electromagnetization in the
combustion chamber are shown in Figure 3, 4, 5, and
6.
Figure 3 showed the value emission of carbon
monoxide from the engine. It can be seen that the
increase of engine speed cause increasing emission of
carbon monoxide. The effect of electromagnetization
fuel is a reduction in CO emissions. According to the
chart above , the maximum value emission of carbon
monoxide is using E20 without exposure
ASAIS 2020 - Annual Southeast Asian International Seminar
24
electromagnet at 3000 rpm. On the other side, using
E20 with exposure electromagnet at 3000 rpm can
decrease approximately 47.37% carbon monoxide.
The increasing percentage bioethanol in the fuel can
decrease emission of carbon monoxide from engine,
it proved by the lowest value emission of carbon
monoxide in 3000 rpm with E30 with or without
exposure electromagnet.
1500 2000 2500 3000 3500
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
CO (%)
RPM
E0
E0 Magnet
E10
E10 Magnet
E15
E15 Magnet
E20
E20 Magnet
E 25
E 25 Magnet
E 30
E 30 Magnet
Figure 3 Carbon Monoxide Emission Testing Results
Figure 4 showed the value emission of carbon dioxide
from the engine. It can be seen that the effect
electromagnetization of fuel is a increasing carbon
dioxide emissions, this phenomenon indicates that
increasing complete combustion reaction. According
to the chart above, the best increasing emission of
carbon dioxide is using E20 with exposure magnet at
3000 rpm, that can increase approximately 26%
carbon dioxide.
1500 2000 2500 3000 3500
0
2
4
6
8
10
12
CO2 (%)
RPM
E0
E0 Magnet
E10
E10 Magnet
E15
E15 Magnet
E20
E20 Magnet
E 25
E 25 Magnet
E 30
E 30 Magnet
Figure 4 Carbon Dioxide Emission Testing Results
Figure 5 showed the value emission of hydro carbon
from the engine. It can be seen that the increase of
engine speed cause increasing emission of hydro carbon,
except at 3000 rpm. The effect of
electromagnetization fuel is a reduction in HC
emissions. According to the chart above , the
maximum value emission of hydro carbon is using
E10 without exposure electromagnet at 2500 rpm. On
the other side, using E10 with exposure
electromagnet at 2500 rpm can decrease
approximately 61.16 % hydro carbon. The lowest
value emission of hydro carbon in 3000 rpm with E30
with exposure electromagnet.
Figure 6 showed the value emission of oxygen
from the engine. It can be seen that the effect
magnetization of fuel is a decreasing oxygen
emissions, this phenomenon indicates that increasing
complete combustion reaction. According to the chart
above, the lowest emission of oxygen is using E20
with exposure magnet at 3000 rpm, that can decrease
approximately 33.2 % oxygen emission.
1500 2000 2500 3000 3500
0
50
100
150
200
250
300
350
400
450
500
550
600
650
HC (PPM)
RPM
E0
E0 Magnet
E10
E10 Magnet
E15
E15 Magnet
E20
E20 Magnet
E 25
E 25 Magnet
E 30
E 30 Magnet
Figure 5 Hydro Carbon Emission Testing Results
1500 2000 2500 3000 3500
0
2
4
6
8
10
12
14
16
18
O2 (%)
RPM
E0
E0 Magnet
E10
E10 Magnet
E15
E15 Magnet
E20
E20 Magnet
E 25
E 25 Magnet
E 30
E 30 Magnet
Figure 6 Oxygen Emission Testing Results
The Effect of Electromagnetization Fuel using Bioethanol-RON 90 Blends on Exhaust Emission Engine 125 CC
25
4 CONCLUSION
Based on the results of electromagnetization testing
of RON 90 fuel types with bioethanol mixture
variations, the following results are obtained:
1. There is a decrease in exhaust emissions (CO
and HC) from engines that use a mixture of
RON 90 + bioethanol which is affected by the
treatment of electromagnetic fields
(magnetization) of the fuel.
2. The effect of electromagnetization can
increased combustion efficiency which is
shown by the increase in emission carbon
dioxide and decrease in emission oxygen from
engine.
3. The best composition of fuel and engine speed
to produce complete combustion with low
exhaust emission is E20 (20% Bioethanol with
80% RON 90 at 3000 rpm), the effect of
electromagnetization fuel E20 at 3000 rpm can
decrease approximately 47.37% carbon
monoxide emission, increase approximately
26% carbon dioxide, and decrease
approximately 33.2 % oxygen emission.
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