Name
Kokorev Gennady Dmitrievich
Scholastic degree
•
Academic rank
associated professor
Honorary rank
—
Organization, job position
Ryazan State Agrotechnological University named after P.A. Kostychev
Web site url
—
Articles count: 28
The article presents native and foreign bench-top
and board methods to test the automobile break
systems. One can find information about some
native trailer-break stands. We have analyzed their
advantages and drawbacks such as low information
capacity, high diagnostics processing time, low
quality of regulation and maintenance operations
due to big influence of the operator’s experience,
his knowledge and individual characteristics, and
great instability of manual test modes on the results
of the investigations. To remove these shortcomings
they have had some experiments at MADI in order
to develop the module to the brake qualities stand.
When using it one can have automatic diagnoses
and flow chart is presented in the article. Due to the
existing vehicles’ state inspection mode and
diagnostic means in our country there appeared new
stands for brakes control. One can attribute to these
devices a range of brake qualities stands developed
and produced at Novgorod plant GARO. These are
STS-3, STS-10 and STO series stands for cars,
trucks, buses and micro-buses. The article also
presents some foreign stands used in Russia such as
universal brake stands STM by META firm, the
break stand IW7 Eurosystem by MAHARUSSIA
firm. We have presented in the article the results of
the analysis of simple and complicated board means
of diagnosis as “Eftor-2”, “Effect”
The article presents an analysis of the existing approach
to automobiles technical maintenance in
agriculture. We have pointed out that in modern
conditions it is impossible to forecast the automobiles
maintenance operation frequency and as a
result its improvement as well. It is obvious that
one cannot achieve the considerable increase of
maintenance operation efficiency by separate means
and there exist the necessity to treat it as a system
and use the up-to-date methods to investigate and
improve complicated systems. We have made a
conclusion that the increase of maintenance operation
efficiency is not possible without some rational
strategy of maintenance operation and repair. We
have shown that the program of maintenance operation
and repair being an integral part of automobiles
technical maintenance has considerable effect on
maintenance and repair quality. As a result, there
is some necessity of the developed system of
parameters diagnosing and control in technical
maintenance and repair. We have shown that to
get sufficient diagnose information one needs
selection of the controlled parameters which
give maximum information about the object
technical status taking into account possible characteristics
of its operational faults. We have discovered
that in order to solve the task it is necessary to
have the object’s information pattern, calculation of
possible characteristics of the controlled object being
in good or bad order due to some parts fault,
evaluation of information brought by every parameter
and determining parameters to be diagnosed. We
have proposed to evaluate the parameters’ information
value with the help of information entropy as
uncertainty measure that is one of the main concepts
of the information theory. Because of solving
the task, we have got the aggregate of the controlled
automobile parameters orderable according to the
amount of information
The article presents a technical diagnostics of a car as a complex of goals and tasks connected with
trouble-shooting of mechanisms and systems in
order to eliminate them. We have considered the
stages of computer diagnostics of different
automobile systems such as diagnosing the engine,
the brake system, steering and suspension. We have
analyzed their components, the ways of troubleshooting
and elimination recommendations. The
article presents the main troubles transferred from
the electronic control unit. The article also presents
the stages of diagnosing the engine including
external examination, listening to abnormal noises,
checking the operating fluids and the engine
management system, diagnosing the basic engine
systems and checking the cylinders being filled.
The article contains the list of main troubles and
their reasons. One can also see diagnosing the brake
system, its defects and remedies. The article
presents diagnostics and repair of the suspender and
graphics describing the check of the dismantled
shock strut at the stand and tests of the shock strut
without being dismantled. We have analyzed
computer diagnostics and the problems it solves
Due to the deterioration of the ecological situation
in the world, population tends to eat organically
grown foods that are grown either without or with
minimal use of chemicals. The development of
agriculture in this direction leads ultimately to
organic agriculture. To improve the competitiveness of this direction, we need more
effective agricultural machines, especially in the
last phase of cultivation, namely at the stage of
harvesting. One of the most difficult scientific and
technical problems with the mechanical harvesting
of potatoes is not letting vegetable impurities and
tops to fall down in the hopper with the potato
tubers, which among other things will improve
operational efficiency technology. The article
reviewed the various methods for removing the
tops, as well as their advantages and disadvantages.
The article makes a conclusion about the need for
potato top separators in harvesting machines. We
have also considered a promising device for
removing haulm, a conveyor with flexible fingers
on the bars and the clamping beater. Тhe most
short-lived structural element of the device for
removing haulm, reducing reliability of the device,
is flexible fingers mounted on rods. We have
proposed to use polyurethane as a material for
manufacturing flexible fingers
The article contains analysis of consumption of
the main natural resources and their use in the
automotive industry. It is noted that during the
manufacture of the car pollution is obtained in 2
times more than in exploitation. It defines the
essence of recycling process (autorecycling) and
its ecological components. Activity on autorecycling
was expressed through the index of recycling
efficiency. We have analyzed the global car
fleet and average annual amount of automotive
waste, million tons per year. We point out that
one of the economic components of recycling is
the use of parts and mechanisms of machines
ready for further use, by qualitative technical diagnostics
with use of diagnostics devices. The
problem of utilization technological effectiveness
of cars as set of the properties characterizing fitness
of a design to utilization at the minimum
costs of time, work, means, providing the minimum
negative impact on environment and the
maximum involvement of components of the
written-off equipment in processing or a reuse is
considered. The main definitions and factors defining
utilization technological effectiveness and
its main indicators are given. The main ways of
increasing of utilization technological effectiveness
of cars are offered and the conclusion is
drawn that simplifying dismantling of the car on
automobile components, reducing dismantle time,
time of draining of everything, the liquids and oils
applied at operation, applying environmentally
friendly materials, etc., the designer can increase
technological effectiveness of the car at utilization.
As a result of the solved task we have got
ecological and economic effect of vehicle recycling
Material and technical resources form the bulk of the
cost in the production of agricultural products and
determine the level of intensity of agricultural
development, productivity and competitiveness of the
industry. The most important role in agricultural
production has been given to transport operation, as the
performance and the quality of the implementation of
which depends directly on the amount and the grade of
the products. On intraeconomic transportation in the
APC RF, along with the car we widely use tractor
trucks. Unfortunately, in most cases for the
transportation of agricultural goods we use supersize
trucks, including construction purposes, with a high
axle loading. These vehicles need roads with improved
coating to each field. Here we may note substantial
shortcomings of transportation. Because of the
unnecessary displacements from combines to dump
trucks to the end of the field, the costs and the losses are increasing and the arrival of heavy machinery in the
field leads to soil compaction, which ultimately affects
the future harvest. The successful implementation of
agricultural work is strongly associated with the timely
and volume movement of a variety of materials, such as
animal feed, fertilizers, construction, and other loads. A
lot of these works needs roads; nevertheless, the quality
of agricultural roads and field work significantly affects
the timely and high-quality forage. Thus an important
part of any machinery tractor fleet of agricultural
production is taken by the presence of modern cars,
tractor-trailers and semi-trailers. Continuous growth in
the saturation of tractors carried out around the world,
improves the performance of tractor transport aggregate
by increasing their capacity and speed, either on the
road or in the field. However, if you increase the
saturation of tractors, it encounters problems related to
the deterioration of the controllability of the tractor and
transport unit. To address emerging when increasing the
saturation of tractors problems, we have proposed
devices, allowing reducing negative impact on the
production of elevated oscillatory processes, to increase
the permeability and straightness of movement of
tractor-transport unit
In recent years, in many countries around the
world, much attention is paid to the issues of
ensuring of rational use of energy resources,
due to a number of objective factors, chief
among which are: the lack of own energy
resources to meet domestic energy needs; the
sharp increase in the cost of production and the
production of energy resources; further growth
in energy needs; the presence of large potential
opportunities to reduce unproductive losses of
fuel and energy. In the world, the challenge
now is to ensure a gradual but steady transfer of
the economy on energy saving way of
development. To achieve the goal of reducing
energy costs we might use two ways: firstly, the
widespread introduction of energy saving
technologies, and secondly, the reduction of
material production, improving its quality and
service. In agriculture, the improvement of the
technological process can be carried out using
new tillage methods, improving the
organization of production and tools. Further
development of mechanization in agriculture
will contribute to further growth of
electrification in the agricultural sector, which
will significantly reduce the use of the most
expensive and limited energy resources. The
article offers a technique of the estimation of
the efficiency of consumption of energy in
agricultural production. In order to compare the
efficiency of machines in the cultivation and
harvesting of potatoes, there was conducted an
energy assessment of the operations of modern
technology. As variables, there were
investigated different operation modes of the
machine: working speed and working width,
depth of stroke of the working bodies. In the
process of evaluating energy operations,
modern technology to prepare the soil for
planting potatoes was determined humidity,
mechanical composition and soil type. As a
main factor in the analysis of technological
methods, we have taken the overall specific
energy consumption and specific energy
consumption for the digging below tuber
formation. Analysis of theoretical researches of
agricultural machinery has led to the conclusion
that the energy cost of implementing the
technological process in the machines of
different designs varies
The article shows the importance of math description
and grounding the function taking into account the
process of changing the parameter when developing
the methodology of automobile diagnosing. It is
pointed out that after all the prediction error and effort
depend on the choice of approximating function.
The wrong choice of the function can bring to naught
all the efforts to manage safety margin and other parameters
of cars elements. One can find the requirements
to math description and grounding the function
of the parameter change. Based on the analysis of
factors influencing the process of parameters change
and requirements to math description of this process
we have noticed that it is necessary to approximate
the change (increase) of the state variable by the
chance ordered function with increasing realizations.
One can consider the parameter change realization
both strictly and not as a monotone function ranging
from zero to the limit change of the parameter. We
have mentioned that the fore-quoted reasoning with
the account of two groups of factors make possible to
investigate the parameter change at this or that moment
of work as a sum of two random values. We
have made a conclusion that they usually express the
link between the change rate (for instance, detail
wear rate) and the readings of the material properties
and functioning conditions (metal skin hardness, unit
loading on the detail surface, its relative rate of
movement) by the functional determined dependence
got as a result of lab tests or theoretical study. In the
conclusion, one can see that the analysis of the results
of math description of the process of the parameter
change is sufficient enough
While mechanical harvesting of potatoes, about
20-40% of the tubers get damages. Dynamic
loads, injuries of the tubers, causing internal
damage – which is browning of the flesh of the tuber, which occurs in the process of its storage.
At the same time, ways to express control of
damage to potato tubers will allow both
reducing damage during harvest, and promptly
sending damaged potatoes for recycling before
the results of mechanical stress for the tubers
during harvesting. The definition of internal
damage to the potatoes is possible because of
the analysis of the different elasticity of the
tissues of damaged and undamaged tubers. The
value of overpressure of the device is chosen
such way that during deformation of tubers
there mainly has been compression of the
damaged tissues of the tuber, with the least
turgor. The degree of damage of samples of
tubers is determined by the ratio of the volume
of damaged tissues of tubers to the total volume
of the sample. We have given the mechanical
properties of tissues of tubers, fruits and root
vegetables, their structure, dimensional
characteristics, it can be assumed that the use of
this method of determining internal damage
possible for apples, carrots, beets and harvest of
other crops. Use of damage control will enable
timely identification of hidden damage and
make it possible to eliminate their causes,
which lead to increase loss products
Fruit harvesting is the final and decisive
operation in the general work plan for growing
fruit, which largely determines the qualitative
and quantitative indicators of production and
economy of industry in general. Increasing
productivity by improving the safety of fruits
and vegetables is a priority and not an easy task.
For example, the use of cleaning technologies
with the use of machinery for harvesting of
apples by shaking can significantly reduce the
time of gathering fruit compared to hand
harvesting. This technology may be applicable,
if the fruit is grown for the manufacture of
juices, jams, etc. Currently, in several European
countries and in the USA, they widely use fruit
harvesting platforms and machines. The leader
in the production of fruit harvesting platforms is
Italy. To reduce the damage to fruit in
agriculture, the analysis of the traumatic factors
is of great importance, with the analysis of
available machines and their subsequent
modernization with the aim of improving the
reliability and quality of harvesting and
transport process, taking into account of the
algorithm for solving these problems, the
creation of new varieties of fruits and
vegetables suitable for machine processing,
strict compliance with deadlines and agronomic
requirements for the performed technological
operations, taking into account the savings of
energy and resources when using mobile
technology. In addition to the modernization of
the machines for efficient operation, it is
necessary to improve also the scheme of
planting of gardens and methods of cultivation,
transfer horticulture to intensive way of
development