Diomin, R.

Gorbunov, N.

Kovtanets, M.

Горбунов, М.І.

Горбунов, Н.И.

Дьомін, Р.Ю.

Дёмин, Р.Ю.

Ковтанец, М.В.

Ковтанець, М.В.

eEast-UkrNUIR (Electronic Volodymyr Dahl East Ukrainian National University Institutional Repository)

22  _________________________________________________________
Globalization of scientific and educational space. Innovations of transport.
Problems, experience, prospects.
CONCEPTION OF CREATION OF CONTROL SYSTEM
COUPLING OF NEW GENERATION
Gorbunov N., Kovtanets M., Diomin R.
Volodymyr Dahl East Ukrainian National University
The aim of the Ukrainian Railways to ensure high-speed traffic and
the increasing traction of locomotives require modernization of the existing
rolling stock and developing advanced systems to improve efficiency, ener-
gy saving, traction and braking characteristics of locomotives.
One of the advanced systems mentioned above is the sand system,
which is designed to improve the cohesion coefficient of wheels and rails
and reduce the probability of skidding. Study of the sand systems designs
and their work allowed to identify the main shortcomings that affected the
locomotive and the road economy, and also negatively affect the environ-
ment. Given these shortcomings, the authors have developed, tested and
brought to the model samples two promising directions control traction
rails: 1 – modernization of the existing sand system that will allow jet-
abrasive effect on the surface of the rolling element, wherein a pulse shape
to adjust the performance is used and, thus, reduce the consumption of abra-
sive material up to 3-7 times, depending on the operating conditions; 2 – to
clean the railways with the brand new dry ice granules supplying system.
Obvious advantages of the second direction contribute to increasing
its spread as in the industrial sector as in the service sector. Cleaning with
dry ice granules surfaces of wheel and rail from a "third body" has the fol-
lowing advantages: dry ice is environmentally friendly solid phase of car-
bon dioxide (CO2) with a temperature of -79°C, owing to these unique
properties after contact with surfaces it heats up and sublimates (evaporates)
into the atmosphere, does not require disposal of "secondary waste"; dry ice
granules do not damage the surface, which after sublimation of the granules
remain dry, which reduces the coefficient of friction due to the presence of
water and does not affect sensitive electrical equipment.
The efficiency and intensity of cleaning with dry ice granules is pro-
vided by three effects: mechanical – compressed air flow with the dry ice
granules impacts the surface at a speed of about 100 m/s, performing the
removal of impurities; heat – heat exchange between the surface and the ice
granules causes a intensive local cooling and fragility of contamination,
causing thermal shock; freeze – formed through the cracks the dry ice gran-
ules penetrate into the layers of dirt and sublimate in them into more than
400 times expansion after fast change of the phase state, thereby forming a
rarefaction wave and there is a complete separation of contaminants.
____________________________________________________________23
Globalization of scientific and educational space. Innovations of transport.
Problems, experience, prospects.
The feasibility of using dry ice granules is confirmed by the per-
formed laboratory tests, analysis of basic and applied research, which shows
that when cleaning surfaces covered by oil pollution, this method is most ef-
fective.
The authors have obtained patents for utility models and inventions
of Ukraine in developed research areas. The search of scientific and indus-
trial organizations for joint research, prototyping and participation in grants
is conducted.


Conception of creation of control system coupling of new generation

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Conception of creation of control system coupling of new generation

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