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EFFECTS OF HHO GAS ON COMBUSTION EMISSIONS IN GASOLINE ENGINES
Navin Tiwari1, Jay Yadav
2, Shubham Singh
3, Shivam Patel
4
Student, Mechanical department, Laxmi institute of Technology, Sarigam-Valsad. Gujarat
Corresponding Author Detail:
Navin Tiwari
Student, Mechanical department,
Laxmi institute of Technology,
Sarigam-Valsad, Gujarat.
Internal Guide Detail:
Mr. Chetan Patel
Assistant Professor, Mechanical department,
Laxmi institute of Technology,
Sarigam-Valsad. Gujarat.
ABSTRACT
In this project, effects of HHO gas on combustion emission in gasoline engine are described
with experimental setup. Alternate fuel is important and it should be a fossil fuel .As we
spend1/3 of our economy for our vehicle and it also releases harmful gases which is
undesirable for our environment. Water is one of the free, cheapest and clean alternatives, it
can be combined with hydrogen gas which could be termed as HHO gas. To avoid these
drawbacks, some level of HHO is mixed with filtered air, which is after the air filter system
and before the engine is taken system of the vehicle. By applying this system we can control
the harmful wastes up to certain percentage. From the above description we can say that the
fuel efficiency and vehicle performance is increased. This is the safest method to give clean
and healthy environment to the next generation
KEYWORDS: Auto emissions, Brown’s gas (HHO), Fuel cell (FC), Nitrogen monoxide
(NO), Nitrogen oxides (NOX)
INTRODUCTION
The compact HHO generating device on a gasoline engine. The nitrogen oxides (NOx),
carbon monoxide (CO), and fuel consumption were reduced by 50%, 20%, and ∼30%,
respectively, with an addition of HHO gas. The effect of HHO addition on CI engines was
studied by Yilmaz et al.;An increase in engine torque by an average of 19.1%, a reduction in
CO and Hydrocarbons (HC) emissions, and Specific Fuel Consumption (SFC) by averages of
13.5%, 5%, and 14%, respectively have studied the effect of H2 enrichment on a SI methanol-
fueled engine, and reported an increase in Brake Mean Effective Pressure (Bmep) and both the
thermal and volumetric efficiencies, with 3% of H2 by volume of the intake air. the
experiment on a single cylinder SI gasoline engine while injecting H2 in the intake manifold
in volumetric fractions (Vf) of the intake air between 5% and 25%. The results reported a
continuous increase in Bmep and thermal efficiency, and a decrease in both HC and CO
emissions, with an increase in H2 fraction. Unfavorably, a corresponding increase in NOx was
reported with the rise in H2%. The experiment on a SI 4-cylinder gasoline engine to
investigate the performance of H2/gasoline blends. In most of the experiments, the engine
was operated in a city driving condition of 1400 rpm. Results in the general qualities offered
by H2 without any other modifications to the engine. Notably, the spark timing of the original
International Journal of Scientific Research in Engineering (IJSRE) Vol. 1 (3), March, 2017
IJSRE Vol. 1 (3), March, 2017 www.ijsre.in Page 82
gasoline operation was not modified, despite the predictable fast combustion of H2/gasoline.
The results demonstrate a most profound enhancement in Bmep and thermal efficiency in lean
conditions, and an increase in peak cylinder pressure and an advance in the corresponding
crank angle (CA) with the increase in H2% [4][5]
.
This paper illustrates what is the effect of the partial inclusion of the HHO gas into the
conventional S.I engine along with the petrol.As we know that current global economy faces
problems in the fossil fuels and fossil fuels end in the nearest future. Another reason is that,
these fossil fuels are also harmful for the environment. It affects the protection layer of the
earth i.e. Ozone layer as well as global warming effect & green house effects.Internal
combustion engine in which the combustion of fuel takes place inside the cylinder is known
as I.C engine, the procedure of combustion are directly the motive fluid. Petrol & Diesel
engine are the examples of this type, where the working substance is the product of
combustion.In this project we are using Spark Ignition Four Stroke I.C Engine. BASIC
WORKING OF Four Stroke Spark Ignition (S.I) Engine:Mainly, S.I engine working fuel is
petrol which also termed as Gasoline.Petrol engine takes air and petrol mixture at required
proposition which is taken into the intake manifold of an engine and ignited spark plug
when the charge is compressed. The four stroke S.I engine was introduced in 1876 by
Nicolaus August Otto.[3]
OBSERVATION
Load(kg) Petrol as a fuel
S1
S2
S1
-S2
Dru
m s
pee
d
RP
M
En
gin
e sp
eed
RP
M
Tim
e ta
ken
fo
r
10cc
of
fuel
to
be
consu
med
B.P
(KW
)
T.H
(%)
S.F
.C(k
J/K
W-
hr.
)
25 6 19
271
1045
32
0.9
5
10.1
1
0.8
48
25 6 19
5988
2310
25
2.1
16.6
0.5
1
25 5 20
806
3116
23
2.9
8
22.8
0.3
7
25 5 20
1109
4287
22
4.1 29
0.2
95
25 5 20
1406
5435
13
5.2
22.3
0.3
8
International Journal of Scientific Research in Engineering (IJSRE) Vol. 1 (3), March, 2017
IJSRE Vol. 1 (3), March, 2017 www.ijsre.in Page 83
SCOPE OF WORK:
As advantages and conclusion states that this is useful device which should be implement in
every vehicle. Design of electrolyzer unit of SI engine, CI engine, Multi cylinder engine,
Using more safety device like cut-off switch in on/of switch to prevent electrolyze to run
unnecessarily.
With detailed experimental analysis & with some modification of engine makes more
usefulness of HHO than the HHO used in the conventional engine.
Make modifications in valve timing can make efficient use of HHO in the engine. As in
conventional S.I engine the valve timing diagram is set to the limit of air-fuel ratio. But in
this case adding supplementary fuel HHO along with the air-fuel mixture not set to the
conventional valve timing. So if try to improve valve timing of an engine taking
consideration of HHO as supplementary fuel.
OBJECTIVE
Expected Gains In Mileage:
• Could gain between 30%-50% for most petrol driven cars
• The gains are largely dependent on the maker of our vehicle and engine size. The bigger
the engine, the greater the gains that will be seen. These gains will be achieved with no
modifications to engine.
S1
S2
Dru
m s
pee
d
RP
M
En
gin
e sp
eed
RP
M
Tim
e ta
ken
fo
r 1
0cc
fuel
co
nsu
med
B.P
(KW
)
T.H
(%)
Sfc
(kj/
kw
-hr.
)
25 6
30
2
11
68
36
1.0
6
12
.41
0.6
78
25 6
64
1
24
78
28
2.2
5
20
.62
0.4
1
25 5
86
6
33
48
27
3.2
28
.1
0.3
01
25 5
11
36
43
92
25
4.2
34
.3
0.2
45
25 5
14
87
57
52
15
5.5
26
.04
0.3
23
20
20
20
19
19
S1
-S2
Load(KG) Petrol + HHO as fuel
International Journal of Scientific Research in Engineering (IJSRE) Vol. 1 (3), March, 2017
IJSRE Vol. 1 (3), March, 2017 www.ijsre.in Page 84
Increased Power:
• Engine will run much smoother with an increase in power of about 10% because of the
better combustion, as a result of the combination of fuel and HHO being burnt together.
• HHO burns 200 times faster than petrol helping your fuels burn rate increase resulting in
a more complete burn. This actually makes your engine run cooler which also means less
engine wear.
• The better burn of your fuel is what gives the economy.
CONCLUSION
The Petrol engine performance and emission analysis are conducted with Petrol + HHO and
petrol respectively. Thus the performance and emission analysis results are compared after
conducting the tests with petrol on „Reduction of fuel consumption in gasoline + HHO and
petrol respectively. The following conclusions are observed as follows:
• Use of HHO in gasoline engine increases the power output of the engine around 5.7%.[3]
• The HHO gas kit can be easily constructed and easily integrated with existing engines at
low cost[3]
.
• Thermal Efficiency increases around 5%[3]
• The engine tended to run richer under higher loads[1]
• Introduction of HHO led to increase power and torque[1]
• The combustion efficiency has been enhanced when HHO gas has been introduced to
the air/fuel mixture, consequently reducing fuel consumption[2]
.
REFERENCES
1. “Reduction of fuel consumption in gasoline engines by introducing HHO gas into intake
manifold”. Article in International Journal of Hydrogen Energy 35, 2010, published by
Ammar A. Al-Rousan, Department of mechanical engineering, Faculty of Engineering,
Mutah, Al-Karak 61710 Jordan. Article was published on 30th
august 2010.
2. “Effect of HHO on four Stroke Petrol Engine Performance”, a research paper submitted
in 9th
South African Conference on Computational and Applied Mechanics Somerset
West in 2014 by Daniel M. Madyira, Wayne G. Harding, Department of Mechanical
Engineering Science, Faculty of Engineering & the Built Environment, University of
Johannesburg, Auckland Park 2006, Johannesburg.dmadyira@uj.ac.za
3. “Experimental Analysis of Hydro Enhanced Automobile Engine”. A journal published in
International Journal of Emerging Technology and Advanced Engineering Website:
www.ijetae.com (ISSN 2250-2459, ISO 9001:2008 Certified Journal, Volume 4, Issue 8,
and in 2014) by VikasSonthalia, Mohan RadheshMallya, Aksah
4. Sonthalia&K.S.Sridhar, Department of mechanical engineering, PESIT,100ft. Ring road,
Banashankari 3rd
stage, bengaluru-560085.
5. A.A. Al-Rousan,Reduction of fuel consumption in gasoline engines by introducing HHO
gas into intake manifold,Int. J. Hydrogen Energy, 35 (2010),
6. S.e.A. Musmar, A.A. Al-Rousan,Effect of HHO gas on combustion emissions in gasoline
engines,Fuel, 90 (10) (2011).
International Journal of Scientific Research in Engineering (IJSRE) Vol. 1 (3), March, 2017
IJSRE Vol. 1 (3), March, 2017 www.ijsre.in Page 85
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