The research focuses on finding planning methods based on measuring and monitoring the
basic indicators of internal combustion engines (Diesel engines) in order to determine the
critical case of the engines, which determines the expected time for t
he engine or for some
of its basic parts to be sent for comprehensive maintenance.
The wear ratio of one of the basic components of the engine was also determined, we also
chose the diameter of the cylinder and the corrosion that happens to it in order to
determine the engine's lifetime and determine the moment when the engine should be sent
for comprehensive maintenance.
By observing a large number of engines put in repair in the industrial area in Lattakia,
which are 30 engines of different types of diesel and gasoline, and with different
capacities, it was noticed that about 15% of these engines were not exploited and invested
the entire work period designed for them. Also it was noticed that 20% of them have
stopped working because of the severe corrosion of parts, components and mechanics of
these engines, which led to their damage and their inability to do their work on a regular
basis. This has contributed to increased consumption of fuel and Lubricating materials,
which causes damage to the national economy.
The proposed planning method for determining the critical case of the engine when
comparing the schematic results with the practical results of the engines has proved its
efficiency and accuracy with an error rate of no more than 6% This allows it to be applied
and adopted as an effective way to determine the actual lifetime of the engine and compare
it with the life time of investing the engine mentioned in the manufacturer's catalogs when
operating the engine under normal conditions.
In this study, a simulation of the MTR-22MW reactor and a study
of standard and mixed fuel combustion using the Codes GETERA
and MCNP5.
The Results of the simulation showed that the operation time of the
reactor in the case of standard fuel is 274 days and if the use of
mixed fuel is 135 days.
The research focused on the conclusion of a mathematical model to determine the
proportion of nitrogen oxides emitted from the internal combustion engine based on the
equations of chemical interaction of direct and reverse the conventional fuel wit
h the use of
many of the correction coefficients, as well as the possibility of developing this model.
Search to find out the concentration of nitrogen oxides NO changes resulting from the
combustion of fuel in internal combustion engines that run on diesel fuel and gasoline
adopted, during work time, and then transform this relationship to calculate the ratio of the
concentrations according to the angle of rotation of the engine crankshaft.
In recent years the interest in renewable energy resources is increasing.
Ethanol is considered as one of the promising alternative fuels. It has many
advantages that make it an excellent motor fuel, Ethanol combustion
relatively yields much lower
amounts of poisonous carbon monoxide (that is
very important in crowded cities), and it is also CO2-neutral in regards to
the greenhouse effect. In comparison with gasoline, ethanol needs less
amount of air for combustion, so the stoichiometric ratio for gasoline is
15:1, but for ethanol is 9:1.
The burning velocity and flame structure of ethanol –air mixtures over a
wide range of pressure and temperature have been studied using both a
constant volume spherical and a cylindrical chamber with end windows. A
thermodynamic model was used to calculate the burning velocity from the
measured dynamic pressure rise in the spherical chamber. Photographic
observations were made through the end windows in the cylindrical
chamber. Smooth and cracked flames were all observed by using a highspeed
camera.