Volume 02 Issue 12-2022
18
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
02
I
SSUE
12
Pages:
18-26
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
METADATA
IF
–
7.356
A
BSTRACT
In this article, the increase in the thermal load of engines running on gas fuel is considered. Simply put,
after starting a cold engine, it first heats up, after which the processes of keeping the heat within the
specified limits of the cooling system are studied.
K
EYWORDS
Gas, engine, heat, system, cooling, air, liquid.
I
NTRODUCTION
As a rule, many modern engines operate in the
coolant heating range, which is on average 85-
100 ℃. This means that the cooling system does
not allow the coolant temperature to fall below
the minimum mark and exceed the maximum
limit [1-4]. The operating temperature of the
engine must be kept constant because with such
heating technical fluid shaves the necessary fluid,
the spaces between the parts of the internal
combustion engine will come to the design norm
as a result of thermal expansion, and fuel will be
consumed and burn most efficiently, etc.
Journal
Website:
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Copyright:
Original
content from this work
may be used under the
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commons
attributes
4.0 licence.
Research Article
THE MAIN FACTORS THAT INCREASE THE THERMAL LOAD
OF GAS ENGINES
Submission Date:
December 01, 2022,
Accepted Date:
December 05, 2022,
Published Date:
December 13, 2022
Crossref doi:
https://doi.org/10.37547/ijasr-02-12-03
Dilshod Tursunov
Assistant, Fergana Polytechnic Institute, Fergana, Uzbekistan
Volume 02 Issue 12-2022
19
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
02
I
SSUE
12
Pages:
18-26
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
METADATA
IF
–
7.356
Given the above, it is clear that a healthy cooling
system will always strive to maintain operating
temperature [5-9]. At the same time, certain
malfunctions can cause the motor to overheat
both in summer and in winter [10-17].
T
HE MAIN PART
The only thing is that in the cold season, the
maximum efficiency of the cooling system is not
required due to the low outside air temperature.
In this case, as a rule, the appearance of certain
problems can be ignored until the outside
temperature rises.
Thus, engine overheating usually results in
cooling systems. The list of main reasons should
include:
1.
coolant leak;
2.
violation of the integrity of the system;
3.
obstruction of coolant circulation;
4.
failure of elements of the cooling system;
Leaks and depressurization lead to a decrease in
the level of coolant in the cooling system, airlocks
and so on. A drop in the level in the expansion
tank is clearly a cause for diagnosis. Pipes and
hoses may burst, seals may be damaged, etc., and
fluid may leak out. If the situation is urgent, then
you can use the "stop-leak" type. In addition, in
some cases, repairing the radiator will help [18-
29].
Let's look at the deterioration of the coolant
circulation through the channels. As a rule, the
main reason is a radiator is clogged from the
inside. The truth is that using poor quality, timely
replacement filling liquids or ordinary water in
the cooling system leads to the formation of scale
in the cells of the radiator, and the accumulation
of pollutants and deposits.
In addition, the outside of the cooling radiator can
also be covered with a layer of dust and fluff. As a
result, heat transfer in the radiator deteriorates,
and together with clogged cells, the coolant does
not cool properly. Therefore, it is necessary to
periodically wash the radiator both inside and
outside [30-37].
If we talk about breakdowns, a malfunction or
complete failure of the pump will cause the liquid
to stop circulating normally through the channels
of the cooling system. This can be caused by a
malfunction of the base driver, etc. To check, it is
recommended to carry out maintenance and
change this element strictly according to the
rules.
As for the thermostat, the function of this element
is to transfer coolant from a small circle (engine
cooling jacket) to a large circle (through the
radiator). Usually, when the engine warms up, the
liquid circulates only in a small circle, after a
certain warm-up, the thermostat opens a large
circle [38-46]. If such an opening does not occur
or the thermostat does not open completely, then
the cooling water will enter a large circle and will
not be able to cool in the radiator. As a result, the
engine overheats. It should also be added that
engine overheating can occur for other reasons.
For example, cooling fan failure or low speed or
maximum speed will usually cause the engine to
"boil".
Volume 02 Issue 12-2022
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International Journal of Advance Scientific Research
(ISSN
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2750-1396)
VOLUME
02
I
SSUE
12
Pages:
18-26
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
METADATA
IF
–
7.356
You can also highlight the situations that occur. In
this case, coolant leaking into the engine oil or
gases from the combustion chamber begins to
enter the cooling system [47-56].
Overheating of the engine is the carelessness of
car owners who forget to remove the plug when
it gets hot. For example, if the external
temperature is left below 3-5 degrees, the
internal combustion engine can still overheat.
If the driver overheated the engine: consequences
for the engine. As a rule, experts distinguish
several options for overheating the engine:
-
weak or local;
-
average overheating of the motor;
-
severe overheating, resulting in failure and/or
jamming of the internal combustion engine;
Figure 1. Engine burns due to overheating
In different cases, the consequences will depend
on how much overheating is allowed. If the
temperature rose but did not reach a critical level,
and the driver noticed the problem in time and
quickly turned off the device, there is a high
probability that the engine will remain in good
condition.
As a rule, in this case, the cause is the failure of the
fan, the deterioration of the pump or the clogging
of the thermostat.
If, before stopping, the overheated engine was
running and did not jam, such overheating can be
considered average. However, if steam is visible
from under the hood, the temperature of the
internal combustion engine on the instrument
scale has risen to the red zone, and the
consequences can be much more serious.
It's not just about being tired cylinder head
gaskets, but also about the destruction, melting,
deformation, the appearance of the mating plane
of the cylinder head, valve plates, etc.
Sudden stalling of the engine is a sign of critical
overheating. In this case, the device may simply
stop due to damage to its parts and assemblies.
Volume 02 Issue 12-2022
21
International Journal of Advance Scientific Research
(ISSN
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2750-1396)
VOLUME
02
I
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12
Pages:
18-26
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
METADATA
IF
–
7.356
Also, the piston can be stuck, which is manifested
in the form of a sharp knock and a stoppage of the
internal combustion engine.
The consequences of such excessive heat are fatal,
melting and burning of the pistons occur, the
molten material flows onto the cylinder walls.
Engine oil overheats and cokes, loaded friction
pairs are destroyed, and crankshafts melt. In
some cases, it can break, pistons can go through
the wall of the cylinder block, and so on.
As you can see, in the second case, rebuilding such
an engine is usually not economically feasible. It
turns out that an overheated and damaged engine
requires a complete replacement with a new or
contract power unit.
How to protect the engine from overheating. Most
cars have a separate coolant temperature gauge
located on the dashboard. However, not all
drivers manage to notice the increase in heating
in time and stop the engine while driving.
We also note that some cars are additionally
equipped with an audible alarm that indicates an
unacceptable increase in temperature, but this
option is available only in some modern vehicles
and even not always. Therefore, it is necessary to
notice the characteristic signs in the movement
that may indicate overheating.
C
ONCLUSION
First of all, you should develop the habit of
periodically monitoring the temperature of the
coolant on the dashboard while driving.
A low level of antifreeze or antifreeze in the
system will prevent hot air from coming out of the
furnace. Also, when the coolant is boiling, there
will be no hot air supply from the interior heater.
As a result of boiling, an airlock is formed in the
system.
Overheating of the internal combustion engine
causes it to appear in the engine. Engine knocking
is characterized by a characteristic sound of
"calling" when pressing the gas pedal. In parallel,
the engine begins to lose a lot of power, which we
can often detect by the appearance of extraneous
knocks and noises.
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