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Global Journal of Science Frontier Research
Agriculture and Veterinary Sciences
Volume 12 Issue 8 Version 1.0
Type : Double Blind Peer Reviewed International Research Journal
Publisher: Global Journals Inc. (USA)
Online ISSN: 2249-4626 & Print ISSN: 0975-5896
Evaluation of Engine Parts Wear Using Nano Lubrication Oil
in Agricultural Tractors Nano lubrication
By Gh. Nasiri-Khuzani, M. A. Asoodar, M. Rahnama & H. Sharifnasab
University of Agriculture and Natural Resources Ramin, Khouzestan Iran
Abstract - Machinery management tries to control maintenance and operation costs by reducing
agricultural machinery damages as well. Today, nanotechnology has an important role in
reducing engine wear costs by using nano particles in engine oils. To study the effect of nano oil
on agricultural engines, performance of eight Massey Ferguson model 399, tractors
manufactured in Iran were studied. Each oil sample was analyzed by atomic absorption
spectrometry. In addition, Particle Quantifier (PQ), total base number (TBN), viscosity, fuel and
water pollution tests were also applied. The results showed that usage of nano diamond oil
additive in agricultural tractor engines would reduce wear in cylinders, gaskets, drive shafts,
gears, camshaft and valve mechanisms by 68 percent. Also reduced wear was shown in piston
ring, bearing, gaskets and exhaust valves by 64 percent. Furthermore, fuel consumption proved
a reduction of 21 percent compared to conventional oil use.
Keywords : Fuel; Nano-diamond; Particles; Tractor engines; Condition Monitoring, Wear;
Particle Quantifier.
GJSFR-D Classification : FOR Code: 070307, 070301
EvaluationofEnginePartsWearUsingNanoLubricationOilinAgriculturalTractorsNanolubrication
Strictly as per the compliance and regulations of :
Year 2012
© 2012. B. Abegaze. This is a research/review paper, distributed under the terms of the Creative Commons Attribution-
Noncommercial 3.0 Unported License http://creativecommons.org/licenses/by-nc/3.0/), permitting all non commercial use,
distribution, and reproduction in any medium, provided the original work is properly cited.

Evaluation of Engine Parts Wear Using Nano
Lubrication Oil in Agricultural Tractors
Nano lubrication
Gh. Nasiri-Khuzaniα
, M. A. Asoodarα
, M. Rahnamaα
& H. Sharifnasabσ
Abstract - Machinery management tries to control
maintenance and operation costs by reducing agricultural
machinery damages as well. Today, nanotechnology has an
important role in reducing engine wear costs by using nano
particles in engine oils. To study the effect of nano oil on
agricultural engines, performance of eight Massey Ferguson
model 399, tractors manufactured in Iran were studied. Each
oil sample was analyzed by atomic absorption spectrometry.
In addition, Particle Quantifier (PQ), total base number (TBN),
viscosity, fuel and water pollution tests were also applied. The
results showed that usage of nano diamond oil additive in
agricultural tractor engines would reduce wear in cylinders,
gaskets, drive shafts, gears, camshaft and valve mechanisms
by 68 percent. Also reduced wear was shown in piston ring,
bearing, gaskets and exhaust valves by 64 percent.
Furthermore, fuel consumption proved a reduction of 21
percent compared to conventional oil use.
Keywords : Fuel; Nano-diamond; Particles; Tractor
engines; Condition Monitoring, Wear; Particle Quantifier.
I. Introduction
egarding the remarkable role of nanoparticles on
oil efficiency, especially at high loads and
pressure, nanotechnology would be an important
technology by reducing damages served to engine and
saving costs of fuel consumption. As machinery
progressed, from steam engines to jet fighters,
lubrication became an interdisciplinary science involves
physics, chemistry, materials, fluid mechanics, and
contact mechanics. In particular, one of the first
proposed applications for new materials was lubrication
as friction reducing nano-bearings in Microsystems
(Stephen 2004). Decreasing the lubrication effects on
the engine parts, would reduce engine power and
increase the fuel consumption in agricultural machinery.
Condition monitoring and maintenance are two
essential components of the modern industry (Thirouard
et al. 1998). The purpose of condition monitoring is to
detect faults occurring in machinery maintenance; on
the other hand, is defined to maintain and extend, the
lifetime of machinery. With regard to monitoring
methods, oil analysis has been considered as an
Author α : Department of Agricultural Engineering, University of
Agriculture and Natural Resources Ramin, Khouzestan Iran.
E-email: Ghasemnasiri63@gmail.com
Author σ: Scientific Board of Agricultural Engineering Research
Institute, Karaj, Alborz Iran. E-mail: hsharifnasab@yahoo.com
and effective approach because of its capability to
reveal the wearing condition of the machinery through
the analysis of oil properties and wearing particles
(Yuan et al. 2002). Generally, recently replaced
components will experience a period of higher wear
known as running-in until reaching wearing pattern,
under higher load conditions. Wearing will keep
increasing, especially if the component is in contact with
another part. Many factors control the quantification of
these reactions, such as operating conditions (e.g.,
temperature and humidity distance shipping) and
composition of the lubricating oil (Macia et al. 2003).
The lubrication layer changes during the engine cycle
from the piston ring motions, oil film evaporation and the
like; therefore, it affects the piston ring lubricant
condition. In fact, major portion of oil consumption
arises from bore distortion and poor piston ring sealing
resulting from ring and bore wear. Clearly, aluminum
exhibits a transition from mild to high wear when the
nominal contact stress exceeds a threshold value
(Venkataraman and Sundararajan 1996). Application of
newer technology and/or materials is being explored to
achieve this goal. By employing nanomaterial, much of
this objective could be achieved. Nanoscale materials
have received much concern in recent years due to their
outstanding properties compared to those of micron-
size counterparts. Due to the remarkable tribological
properties of nanoparticles, together with their good
self-repair function against the worn surface and also
their environ mental-friendly property, they have been
known as excellent candidates for traditional lubricant
additives, especially at severe frictional conditions, such
as high temperature, high load and sliding speed (Sun-
qing et al. 1999). Nano-lubrication therefore can be
defined as the art and science necessary to control
adhesion, friction, and wear of surfaces coming into
contacts at the micro/nano-scale (Stephen 2004). A lot
of research has been conducted on the tribological
performance of diamond nanoparticles (He- long et al.
2007; Chou and lee 2008). For example, by adding Cu
nanoparticles into oil, the average wear scar diameter of
the stationary balls at room temperature, 50 ºc, 80 ºc,
110 ºc and 140 ºc was reduced by 13%, 16%, 21%, 23%
and 25%, respectively. Therefore friction coefficient was
reduced by 5%, 8%, 10%, 15% and 20%, respectively.
Accordingly, this indicates that the higher the
R
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temperature, the better the tribological properties of Cu
nanoparticles will be (Gubarevich et al., 2004). It was
expected that nano-diamond additive could be increase
the oil productivity in the engine, specially at high
pressure and loads for agricultural operations. Also, this
Y additive was shown to be able to reduce the wear in
tractor engines. Basically, the reduction of damages by
the use of nanotechnology are not only able to reduce
the repair and maintenance costs, but they are also able
to control the timelines costs.
II. Material and Methods
The experiments were performed at Agro-
industry Amir Kabir company which is located in south
of Ahwaz, Khouzestan province, Iran. The Agricultural
land available in this company which was used for the
purpose of this study was about 12000 hectares. In this
company there were about 300 Massey Ferguson model
399 tractors being used for sugar cane transportation .
Each tractor carried a file , in which all maintenance and
repairing were recorded.
a) Research Methodology
Eight Massey Ferguson model 399 tractors
were used for this research . These tractors were equal
regarding operating conditions . The analysis of data in
this study was performed by using a completely
randomized block design . Each block of experiment
was based on hours and years of operation and
maintenance conditions. Engine model was four-stroke
and also water-cooled Perkins diesel 1006. Tractors
were working about six months in a year (at an average
of 10 to 16 hours a day). They were being used for soil
preparation and sugarcane transportation in high dust
haze conditions. If tractors stopped due to a failure:
repair and timeliness costs were measured. The first oil
sampling after 120 hours of operation was taken from
each tractor while Behran azarakhsh oil (base oil) was
used in tractor engines. The samplings were performed
immediately after the engine was turned off. Nano oil
was used in the four engines and Behran turbo diesel oil
in the other engines with equal characteristics .
Samplings were taken at 65, 90, 115, 150 hours of the
operation. Finally, each sample was analyzed by atomic
absorption, while viscosity, pollution of water, and fuel
were also measured. The spectrometric test was
conducted to measure chemical elements in the
particles and also to recognize amount and types of
chemical compounds. Spectroscopy is a technique for
detecting and quantifying the presence of elements in
the oil and is based on the ASTM D -6595 standard.
Spectroscopy benefits from the fact that each element
has a unique atomic structure. Therefore, when no two
elements have the same pattern of spectral lines , the
elements can be differentiated. Indeed, the intensity of
the emitted light is proportional to the quantity of the
element present in the sample allowing the
concentration of that element to be determined. The
Particle Quantifier (PQ) is a ferrography screening tool.
The PQ gives an index value that is not size dependant.
This trendable value can assist in identifying large
ferrous worn particles, whose size is greater than 10μm.
This index helps to confirm growing normal wear, the
onset of aggressive wear or the prospect of eminent
catastrophic failure. Other indicators were viscosity and
viscosity index (VI). The kinematic viscosity of the
lubrication oil was measured at 40°C, in mm2/s and
were based on the ASTM D445 standard . Analysis of oil
samples were calculated and oil type effect was studied
on the engine’s worn parts . Also, fuel consumption was
measured using the full tank method in all the
experimental stages.
III. Results
The characteristics of engine wear, TBN and
fuel consumption were investigated after using nano
and turbo oils in Massey Ferguson model 399 tractors.
a) Iron (Fe)
Effect of oil type on Fe wear ratio was significant
(P≤0.05). Results showed that the use of nano diamond
in agricultural tractor engines as an oil additive reduced
Iron wear. The average ratio of Fe wear ni turbo oil and
nano-oil as shown in Figure 1. The effect of time on the
Fe worn particles was significant≤ (0P.01) and they
were increased when engine operation was longer.
According to Table 1, the use of turbo oil after 150h
reduced the Fe wear 1.21 ppm compared to base oil
with 120 h operation while this amount was 19 ppm
where nano oil was applied.
b) Chromium (Cr)
The analysis of variance showed a significant
effect (P≤0.05) of oil type on Cr wear in tractor engines.
According to Figure 1 the meaning of Cr wear effect in
tractor engines for turbo-oil was more than that of
nanooil. According to Table 1, the use of turbo oil after
150h reduced the Cr wear by 0.24 ppm in comparison
with base oil after 120 h operation while this reduction
was 1.12 ppm with the use of nano oil.
c) Particle Quantifier (PQ)
Inspection of the analysis of variance showed
that the effects of oil type and time on PQ in tractor
engines were significant (P≤0.05) and (P≤0.01),
respectively. Figure 1 shows higher PQ index for turbo-
oil compared to nano-oil. The use of turbo oil after 150h
increased the PQ index to 0.88 ppm compared to base
oil while this reduction was 17 ppm when nano oil was
used (Table-1). 3
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Fig.1 : Mean of different effect of oil type measuring
friction on Engine parts
d) Viscosity
The effect of oil type on viscosity rate was
significant (P≤0.05). Results showed that the use of
nano diamond in agricultural tractor engines as an oil
additive reduced the viscosity loss. Effect of time on the
viscosity ratio was significant (P≤0.01). According to
Table 1, the loss of Viscosity was 21.25 cSt with the use
of nano oil after 150h, compared to base oil with 120h of
operation also the loss increased by 13.5 cSt with the
use of turbo oil in comparison with base oil.
Fig. 2 : Mean of different effect of oil type measuring
viscosity
Table 1 : The effect of oil type on wear and viscosity in
Massey Ferguson 399 model tractors
Oil
type
Base
(120h)
Turbo
(150h)
Base
(120h)
Nano
(150h)
Fe 17.5 16.29 38 19
Cr 0.68 0.44 1.75 0.63
PQ 11 11.88 27 10
Vis. @ 40
°C-cSt
164.2 150.7 157 178.3
e) Fuel Consumption
Results showed that the effect of oil type on fuel
consumption was significant (P ≤0.05). According
toFigure 3 the reduction of fuel consumption was 1.1
litr/h were nano oil was used after 150h of noitarepo
compared to base oil with 120h.
Fig. 3 : Mean of different effect of oil type on fuel
consumption in Massey Ferguson 399 model tractors
IV. discussion
Oil type affects engine components wear and
fuel consumption. The nano-oils had less opportunity to
contact the metal surface because of the presence of
nanoparticles, whereas conventional oil is in direct
contact with the metal surfaces. Lee et al. (2009) found
that the friction coefficient of the nano-oil was less than
that pure oil over the entire orbiting speed ranges
between 300 and 3000 rpm. Consequently, reduction of
the Fe particles wear had an important effect on
reducing engine parts damages, for example cylinders,
gaskets, drive shaft, wheel gear, the desire cam, and
valve mechanism. This can therefore reduce the cost of
repairing engine parts. Ginzburg et al. (2002) and
Rapoport et al. (2002) reported that the fullerene
particles suspended in the nano-oil had spherical
structure and played a role as ball-bearings on the
friction surfaces, this phenomena was identified by the
lower friction coefficient of nano-oil compared to regular
oil. The presence of nano-particles in oil reduced the
metal-metal contact in tractor engines. Due to the
applied high Cr in engine component; reduction in
friction effect by nano-oil was significant. It is assumed
that carbon nanoparticles were coated on the frictional
surfaces so that the presence of nanoparticles between
the frictional surfaces seemed to prevent metal contact.
As more nanoparticles were added to the coated area,
the microstructure of the coating became finer and more
compact (Erb 1995). Chromium was highly used in
engine components as rings, tapered roller bearings,
gaskets and exhaust valves. Piston ring dynamics is
very important for the lubricant characteristic of
reciprocating engines which leads to the consequences
a
a
a
b
b
b
0
0.5
1
1.5
2
2.5
3
3.5
4
Fe Cr PQ
Ratio
of
wear
in
nano
and
turbo
oil
to
base
oil
(ppm/ppm)
Oil type
Turbo
Nano
a
b
0
0.2
0.4
0.6
0.8
1
1.2
1.4
Turbo Nano
Ratio
of
viscosity
in
nano
and
turbo
oil
to
base
oil
(40º
C,
in
mm
2
/s)
Oil type
a
b
0
0.2
0.4
0.6
0.8
1
1.2
Turbo Nano
Ratio
of
fuel
consumption
in
nano
and
turbo
oil
to
base
oil
Oil type
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of engine wear and amount of lubricating oil

consumption (Wannatong et al. 2007). As a result, the
nanoparticles reduced friction in these engine parts
through better lubrication. It appears less metal contacts
occur with the presence of nanoparticles in the oil
suspension. This is because nanoparticles, which were
inserted between the friction surfaces, improved the
lubrication performance by increasing viscosity and
preventing contact between the metal surfaces. Effect of
nano-oil in reducing PQ showed nanodiamond additive
could play an important role in better lubrication and
reduced damages and parts wear in tractor engines.
Very high friction coefficients can occur in practical
mechanical contact when there is a breakdown or
absence of lubrication. It can be seen that the wear scar
diameter and friction coefficient of oil containing
nanoparticles are lower than those of pure oil. Hsiao et
al (2009) previously reported a large reduction in the
friction appeared after adding 2% or/and 3% of the
nano-diamond a tnacirbuldditive to a base oil. The
nano-additive reduced the risk of direct metal–metal
contact hence achieving a very positive tribological role
against surface adhesion, wear, and eventually global
friction. In other zones of the same lubricated contact; it
could be found that a nano-film did completely separate
the contacting surfaces (Hsiao et al. 2009; Van Alsten
and Granick 1988). This reveals that the addition of
nano-diamond additive is beneficial to postpone or even
avoid scuffings during the test. The viscosity of oil
changes with temperature. The frictional heat raises the
temperature of the interface and the oil. Frictional heat
makes the temperature at contact spots to rise
continuously. It appears that the temperature of oil
containing nanoparticles is lower. Viscosity affects heat
generation in bearings, gears, pistons, etc., due to
internal fluid friction. Furthermore, formation of
lubricating films, rate of oil consumption, starting of
machines at various temperatures, is all affected by
viscosity (Saurabh 2005). The dispersion nano-diamond
particles in oil collected the oil cells with dimensions
about 6 microns, increased the viscosity of the
lubrication, and created a thin layer on the surface. Also
better heat transfer with use of nano-diamond particles
in engine oil reduced the viscosity loss, increased the
stability of lubricating, and reduced the oil drip. Nano-
diamond as additives in oil can effectively improve the
lubricating properties of oil. The nano diamond by
increasing of the lubrication and insulation improved the
engine efficiency and reduced the fuel consumption in
tractor engines.
V. Conclusion
In summary, nano-diamond particle resulted in
an improvement of anti-scuffing performance in the
engine oil. Using of nano diamond in agricultural tractor
engines as an oil additive was able to reduce the wear in
valve mechanism by 68 percent . Also this additive
reduced the wear in rings, the bearings, gaskets and
exhaust valve by 64 percent. This could indirectly
indicate that the nano-oil enhanced the characteristics
of the antiwear and friction resistance on the engine
parts. As a result of various tests, the nano-particles in
lubrication oil improved the lubricating performance on
the friction surfaces by reducing wear on metal surface.
Durability of the nano-oil utilized in agricultural tractor
engines was 22 percent more than turbo-oil. Also fuel
consumption was reduced 21 percent compared to
conventional oil.
Acknowledgments
The authors thank Dr. M. Ghasemi-arnamkhasti
for critical reading of the manuscript and Dr. Hamdi and
Mr. Soleimani for collaboration in this work.
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