Izvestiya MGTU MAMI

The peer-review quarterly journal "Izvestiya MGTU "MAMI".


  • Moscow Polytechnic University
  • Eco-Vector




The main content of the Journal are scientific articles, scientific surveys, scientific reviews and ratings, as well as information on planned and held scientific events and its results.

Journal is publish scientific articles on the following topics:

  • 05.02.00 — Mechanical Engineering and Machine Science (Technical Sciences);
  • 05.04.00 — Power, Metallurgical and Chemical Engineering (Technical Sciences);
  • 05.05.00 — Transport Engineering, Mining Machinery Manufacturing, Machine Building (Technical Sciences);
  • 05.09.00 — Electrical Engineering.


  • Russian Science Citation Index
  • Google Scholar
  • CrossRef
  • Dimensions
  • Ulrich's Periodicals Directory


  • Manuscripts submission in English and/or Russian
  • Multilanguage publication mode
  • No obligatory APC and ASC
  • Subscription for print journal
  • Hybrid online access (subscription and Open Access articles)
  • Open Access articles publish with СС BY-NC-ND 4.0 International



Eco-Vector is a new publisher of the "Izvestiya MGTU "MAMI" journal

Posted: 28.01.2022

The Eco-Vector publishing house became one of the founders and became the publisher of the "Izvestiya MGTU "MAMI" journal. The journal was re-registered with Roskomnadzor and continues to be published quarterly in Open Access under the strict scientific guidance of the editor-in-chief and the entire editorial board.

Mass media registration certificate PI No. ФС 77 - 81899 dated 05.10.2021

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Vol 17, No 2 (2023)

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Heat engines

Ways to improve performance of an internal combustion engine regarding the loading conditions of vehicle transmission
Berdnikov A.A., Shangutov A.O., Shilonosov A.V.

BACKGROUND: Import substitution has become the most important direction of the development of the country's economy in the conditions of the sanctions policy. In this regard, high requirements are imposed on the production to ensure the competitiveness of automotive machinery. Automotive machinery is a key component of the country's economy that is confirmed by the growth of road transport. Meanwhile, growth of the vehicle fleet leads to increase in consuming of petroleum-derived fuel, which main disadvantage is emission of harmful substances, therefore, internal combustion engines of automotive machinery should ensure low fuel consumption and less emissions of harmful substances with exhaust gases. However, the engine operating modes largely depend on the loads generated in the vehicle transmission.

AIMS: To determine the possibilities of expanding the ranges of power regulation of an internal combustion engine of a vehicle, on the one hand, ensuring low fuel consumption and less emission of harmful substances with exhaust gases, and on the other hand, providing with the power required for a vehicle to move, regarding the type of transmission and propulsion.

METHODS: The analysis of possible conventional and unconventional operating cycles of an internal combustion engine is carried out. The method of mathematical modeling of the formation of torques in various types of vehicle transmission is used.

RESULTS: Possible ways of expanding the ranges of power regulation of an internal combustion engine providing with the required power, low fuel consumption and less emission of harmful substances with exhaust gases, as well as transmission layouts and processes of forming the required power in them to ensure the vehicle movement are considered.

CONCLUSIONS: The considered in the article approach of expanding the ranges of power regulation of an internal combustion engine of a vehicle makes it possible to conclude that it is necessary to use the principles of a scientific approach to the process of development of vehicle transmissions capable of controlling an internal combustion engine depending on loads, ensuring its operation with minimal fuel consumption and emission of harmful substances.

Izvestiya MGTU MAMI. 2023;17(2):97-106
pages 97-106 views
To the question of the description of the internal combustion engine in the mathematical model of the lifting system of the hovercraft (on the example of the ZMZ-51432.10 CRS engine)
Lepeshkin A.V., Nguyen V.

Introduction. It is known that about one third of the total capacity of the power plant of the hovercraft (SVP) is spent on the creation of an air cushion that ensures the rise of the main hull of the vessel. At the same time, in SVP, the source of mechanical energy, as a rule, is a diesel internal combustion engine (ICE). This article discusses one of the issues related to the creation of a mathematical model of the lifting system of the SVP, using: ICE, hydraulic transmission, axial fans and an air cushion nozzle scheme. Since in the vast majority of cases, the internal combustion engine performs its work in partial load modes, it becomes necessary to effectively control the power of the internal combustion engine in order to achieve its high efficiency in partial load modes.

AIMS. The purpose of this study is to develop a mathematical description of the operation of the internal combustion engine both in external and partial modes of operation, for use in a mathematical model of the operation of the lifting system of the SVP.

Methods. In this study, a ZMZ-51432.10 CRS diesel engine is used for the lifting system of the hovercraft.

Results. Using the data obtained using the DIESEL-RK program for this ICE, in the Microsoft Excel environment, the corresponding trend lines were obtained for them by approximating the points that identify the partial characteristics of the engine with fourth-order polynomials, as well as the dependence of the coefficients of these polynomials on the control parameter of the ICE operation mode .

Conclusion. The developed mathematical description of engine operation can be integrated with various load models when simulating real systems using internal combustion engines as energy sources. This means that it can also be used in mathematical modeling of the SVP lifting system in the MATLAB Simulink package.
The approach proposed in this article makes it possible to build mathematical models of various systems using internal combustion engines, simplifying the study and saving computational time. Also, the results obtained can be of reference value.

Izvestiya MGTU MAMI. 2023;17(2):107-114
pages 107-114 views
Innovative developments on the use of hydrogen in transport internal combustion engines and power plants
Shabanov A.V., Dunin A.Y., Vanin V.K.

BACKGROUND: Innovative technologies and design solutions aimed at using hydrogen in internal combustion engines and hydrogen power plants are reviewed in the paper. The advantages of hydrogen fuel are shown and the main problems that Western automakers face and which determine the ways to solve problems in road transport are identified. In this regard, the method of using hydrogen energy in internal combustion engines and hydrogen power plants becomes a decisive factor.

AIMS: Search for a reasonable and effective method of using hydrogen in transport.

METHODS: The technologies of hydrogen production with the electrolysis method and on-board generation of hydrogen using hydrogen-containing components are considered. It is proposed to use ammonia as a hydrogen carrier reagent for operation in dual-fuel diesel internal combustion engines.

RESULTS: It is noted that ammonia, with a high level of hydrogen content in the molecule, is relatively safe, has a low cost and a significant volume of production. It is easier to store and transport compared to hydrogen. For internal combustion engines operating on hydrocarbon fuel, the use of ammonia and hydrogen, its derivative product, is attractive due to the need to remove highly toxic nitrogen oxides containing in the exhaust gases of diesel internal combustion engines.

One of the main problems of creating an environmentally friendly diesel engine associated with reducing the NOx content to an environmentally safe level is considered. A positive factor of using ammonia is the on-board production of hydrogen in the thermal reactor, as well as the possibility of organizing an effective process of neutralizing nitrogen oxides in a diesel engine.

CONCLUSIONS: The use of ammonia to generate hydrogen allows the diesel engine to implement the process of selective reduction of nitrogen oxides when ammonia is injected into the combustion chamber at the exhaust stroke. This method will significantly increase the efficiency of NOx neutralization in a diesel internal combustion engine due to the possibility of temperature regulation of the NOx neutralization reaction directly in the cylinder and in the exhaust system of the internal combustion engine.

Izvestiya MGTU MAMI. 2023;17(2):115-126
pages 115-126 views

Combined power plants

History of the scientific researches of the vehicles with hydrogen power units
Anisimov V.R., Klimov A.V.

BACKGROUND: Fuel cells are one of the promising directions in the development of electrified transport as it is capable of providing with mileage comparable to conventional vehicles powered by internal combustion engines, with no harmful emissions into the environment during the vehicle motion. The long-lasting process of development of fuel cells was associated with the inability to realize the potential of fuel cells and the availability of more accessible and reliable energy sources at that time. The present programs and measures to support electric vehicles and fuel cells set targets for reducing emissions of harmful gases and increasing the share of electric vehicles on the roads.

AIMS: The study of the history of the development of fuel cells and their relevance to the use in vehicles.

METHODS: The calculations to determine the specific parameters were performed with solving the differential equation of the force balance of vehicle motion using the numerical Euler method.

RESULTS: The results of the scientific research are the determination of specific parameters of power units and the analysis of the history of the development of fuel cells. By comparing the specific parameters, it was revealed that the most effective are combined power units on fuel cells. When using these power units, a 2.5-fold decrease in mass was recorded compared to other types of power units.

CONCLUSIONS: The use of fuel cells helps to reduce the weight of the power units and to improve the environmental safety of the vehicle. Fuel cells have undergone several long stages of development and reached their peak of development after the beginning of active space exploration. Currently, the development of hydrogen technologies is actively continuing, programs for the development of electrified transport have been issued in many countries, including the Russian Federation.

The authors note the relevance of scientific research in this area and assume that vehicles powered by electrochemical generators will receive their further development in the coming years.

Izvestiya MGTU MAMI. 2023;17(2):127-136
pages 127-136 views
Development of operation algorithm of electric drive of an electric vehicle in urban cycle
Klimov E.M., Fironov A.M., Maleev R.A., Zuev S.M.

BACKGROUND: Increasing energy efficiency of an electric vehicle is one of the most relevant issues at the current state of transport development. It is known that chemical current sources used in traction electric drive of vehicles have low specific power, low efficiency and high cost that makes the electric transport development difficult.

AIMS: Making the choice of strategy of manufacturing of electric vehicle with batteries.

METHODS: The mathematical models of various vehicle driving cycles, such as: the UNECE Regulation 83 urban cycle, NEDC, WLTC, JC08, EPA HWEET were used in the study that made possible to confirm adequacy of the developed structural model of the electric drive.

RESULTS: The structural layout of the traction electric drive of an electric vehicle with combined energy source has been developed; the algorithm of its operation in the urban driving cycle has been defined. Electric transport efficiency was assessed during the study. The analysis showed that vehicles with solely chemical on-board energy sources do not have any prospects due to unsatisfactory technical properties and consumer attributes. Review of capacitors was performed in order to define the possibility of using them as energy source for next-generation vehicles. The study revealed sufficient advantages of capacitors in many respects. Analysis of vehicle motion in urban cycle was performed in order to develop the optimal design. The electric drive layout with a lithium-ion traction battery as the main energy source and a capacitor as the additional energy source was chosen.

CONCLUSIONS: This solution makes it possible to develop the electric drive with optimal mass and dimensional parameters, to increase service life of energy storage and mileage without recharging of a vehicle. In addition, the combination of two electric energy accumulators and the developed algorithm of their operation makes it possible to achieve high efficiency of energy transferring.

Izvestiya MGTU MAMI. 2023;17(2):137-146
pages 137-146 views

Hydraulic and pneumatic systems

Method for selecting the damping characteristics of the pneumohydraulic suspension system of a wheeled vehicle
Sarach E.B., Krokhin M.E., Lychagov A.A., Smirnov I.A., Kositsyn B.B.

BACKGROUND: In the process of developing suspension systems for modern high-speed wheeled and tracked vehicles, having the selected optimal elastic characteristic curve of the suspension system, its unsatisfactory damping characteristic curve can have a significant negative impact on the overall operation of the suspension unit. Therefore, the search for a method for obtaining the optimal damping characteristic curve is a relevant task.

AIMS: Description the method for selecting the damping characteristic curve of a single-level pneumohydraulic spring for a wheeled vehicle considering the motion along tracks with a harmonic profile and a rough cobblestone road.

METHODS: The damping characteristic curve of the spring is selected using simulation mathematical modeling in the MATLAB/Simulink software, which makes it possible to take into account the nonlinearity of the suspension characteristics. In the process of building the characteristic curve, the limit values of the forces at the front wheels tires are fixed for the sections of the characteristic curve that operate with the valves of the pneumohydraulic spring turned off. Accelerations at the driver's seat and the pressure in the spring chamber are fixed for the sections of the characteristic curve that operate with the valves are turned on.

RESULTS: The results of the selection of an optimized damping characteristic curve showed an improved contact of the wheels with the surface and an increase in the stability of the vehicle, a decrease in vibration accelerations at low disturbance frequencies.

CONCLUSIONS: The practical value of the study lies in the possibility of using this method to develop suspension systems for new wheeled and tracked vehicles.

Izvestiya MGTU MAMI. 2023;17(2):147-156
pages 147-156 views
Modeling of the operation of a disc pump with the wall roughness consideration
Cheremushkin V.A., Lomakin V.O.

Background: at present, a small number of studies of disk pumps operating on a low-viscosity liquid have been conducted. In addition, among the existing works, numerical calculations are presented, which have a serious discrepancy with the experiments carried out. This article is devoted to numerical simulation of the operation of a disk pump on water, comparison of the calculation results with experimental data.

Aims: to determine the factors affecting the convergence of the main characteristics with experimental data when performing CFD calculations on a low-viscosity liquid.

Methods: in this paper, a numerical modeling method based on the solution of discrete analogs of the basic equations of hydrodynamics is used. To compare CFD calculations with the experiment, a test bench was created on which two configurations of the impeller were studied.

Results: it is shown that for this type of dynamic machines, it is important to take into account the influence of the roughness of solid walls when modeling their operation on a low-viscosity liquid, since it has a significant effect on the characteristics of the disk pump. The obtained characteristics are compared with experimental data, as well as flow patterns in the flow part.

Conclusions: based on the results of the article, it can be argued that taking into account roughness in numerical calculations of a dynamic pump has a positive effect on convergence with experimental data.

Izvestiya MGTU MAMI. 2023;17(2):157-164
pages 157-164 views

Transport and transport-technological complexes

Experience in the use of microcontroller platforms and computer technologies in experimental researches of automotive and tractor machinery
Esakov A.E., Bernatskii V.V., Esenovskii-Lashkov M.Y.

BACKGROUND: The current level of research and development work involves the use of systems based on programmable electronics. At the current level of engineering, the development of these systems is expedient to carry out using specialized software. At the same time, a systemic approach to the methodology for using the mentioned tools has not been fully formed yet, which necessitates the consideration of the relevant issues of theory and practice.

AIMS: The attempt to form the principles of the mentioned systemic approach, based on the idea of the integrated hardware and software use, where the complementarity of their capabilities ensures the appearance of a pronounced emergence.

METHODS: The article contains an analytical review and categorization of modern tools that allow to support research in their preparation, carrying out and results processing. As a particular example of their successful combined application, a computerized educational laboratory installation designed by the authors for balancing and calibrating the torque measurement system at a driveshaft of a passenger car is considered.

RESULTS: The article materials contain a description of design and an operation principle of the mentioned installation, a consistent consideration of those specific tools that were used in its development, а information regarding the basic capabilities, the most significant characteristics and features of these tools, as well as the trial tests results and their interpretation.

CONCLUSIONS: The approach described by the authors makes it possible to rationally approach the solution of problems related to the development and use of data measurement systems for experimental studies of automotive and tractor machinery.

Izvestiya MGTU MAMI. 2023;17(2):165-178
pages 165-178 views
Topological optimization of the load-bearing structure of the safety cage
Zhitelev D.A., Pozdnyakov T.D., Sulegin D.A.

BACKGROUND: The conducted study of the stress-strain state of the safety cage developed in compliance with the requirements of the Russian Automotive Federation (RAF) showed that the structure does not meet the requirements of deformation after side impact. Therefore, the basic design demands additional study with the use of state-of-the-art approaches of development.

AIMS: This paper considers the issue of finding the optimal design of a racing car safety cage based on topological optimization in order to meet the rigidity requirements while minimizing the mass.

METHODS: To implement the topological optimization method, mathematical modeling was carried out using the Structural Optimization module of the Ansys software package. Tests regulated by the RAF were selected to test the effectiveness of the optimized design. To evaluate the results, a comparison of the results of test simulation before and after optimization was made.

RESULTS: The mass of the optimized design has decreased by 6% relative to the original. Rigidity of the structure with loading at main and front rollbars remained the same. Deformation of the optimized design with side loading of the main rollbar was reduced by 98%.

CONCLUSIONS: The results of modeling the tests regulated by the RAF showed that the design of the safety cage, developed on the basis of the material pseudo-density map obtained as a result of topological optimization, meets the requirements for permissible deformation. Further study of the stress-strain state of the safety cage should be carried out in conjunction with the finite element model of the vehicle to take into account the loads arising as a result of body deformation.

Izvestiya MGTU MAMI. 2023;17(2):179-186
pages 179-186 views

Electrotechnical complexes and systems

Mathematical model of the moment distribution algorithm along the axes of an electric vehicle with a two-motor type
Zavatsky A.M., Debelov V.V., Malyshev A.N., Keller A.V.

BACKGROUND: The development of electric and hybrid vehicles is impossible without the creation of schemes in which torque is generated by electric motors independently on the front and rear axles or on each wheel and the best dynamics is achieved. The development of a function for distributing torque between the axles or wheels of a car is a relevant technical task.

AIMS: Creation of a mathematical model for the torque distribution requested by the driver to the front and rear electric motors in order to assist the course stability system and counteract wheel slip when driving in a turn close to drifting/skidding or driving on surfaces with a low or variable grip coefficient.

METHODS: The algorithm model was built in the MATLAB/Simulink environment, was tested in the model-in-the-loop mode on a simulation model developed in the Simcenter Amesim environment, was tested in the hardware-in-the-loop mode on the LabCar real-time machine (ETAS GmbH) and was tested in a vehicle.

RESULTS: The function based on the abovementioned methods was built in MATLAB/Simulink. Testing in simulation mode on the simulation model developed in Simcenter Amesim was performed and the initial values of calibration parameters were determined. Implementation of the function into the software structure of the prototype and compilation of the executable C-code for the master file loaded into the control unit were completed. Testing of the function implemented into the control unit on the LabCar real-time test rig was carried out. After eliminating the shortcomings identified at the previous stages of testing, calibrations and tests of the function integrated into the vehicle were carried out, which showed the effectiveness of the described torque distribution model.

CONCLUSIONS: The practical value of the study lies in the possibility of using the proposed control laws to develop systems for torque distribution between the axles or wheels of modern vehicles.

Izvestiya MGTU MAMI. 2023;17(2):187-194
pages 187-194 views
Influence of switching sequences on the neutral point voltage balance in a three-level voltage source invertor
Shishkov A.N., Dudkin M.M., Le V.

BACKGROUND: Ensuring the voltage balance of the neutral point of the DC link within acceptable limits is one of the mandatory requirements during the operation of a three-level autonomous neutral point clamped voltage source inverter. It is known that neutral point voltage imbalance can adversely affect the operation of the inverter and the load at all, lead to the failure of both power switches and capacitors in the DC link. Neutral point voltage imbalance mostly often occurs due to the asymmetry of the nominal values of DC capacitors, inconsistent properties of switching devices, asymmetric three-phase load, and also due to the imperfection of the converter control algorithm.

AIMS: Selection of the optimal switching sequence that ensures the smallest deviation of the neutral point voltage and the number of switching of power switches in a three-level voltage source inverter.

METHODS: For an objective comparison of the considered switching sequences and their influence on the neutral point voltage balance, a simulation model of a three-level neutral point clamped voltage source inverter was developed in the MATLAB/Simulink software. To control this inverter, a space vector modulation method was used with three different switching sequences: five-segment, seven-segment and standard.

RESULTS: The topology of a three-level neutral point clamped voltage source inverter is presented. The experimental dependencies of the neutral point voltage deviation error was taken with a change in the modulation coefficient, the frequency of the fundamental harmonic at the inverter output, and load characteristics for three different switching sequences.

CONCLUSIONS: In this paper, the influence of the basic vectors and the influence of switching sequences on the neutral point voltage balance are studied. Combinations of states of large and zero basic vectors do not affect the neutral point voltage. For the medium basic vectors, the neutral point voltage can increase or decrease depending on the operating conditions of the inverter. The small basic vectors significantly affect the neutral point voltage. Considering the abovementioned, the seven-segment sequence that ensures both the optimal balance of the neutral point voltage and the level of switching losses should be considered as the best switching sequence for a three-level inverter.

Izvestiya MGTU MAMI. 2023;17(2):195-206
pages 195-206 views


In memory of Sergey V. Bakhmutov
Arseniev S.E.

On April 7, 2023, our colleague, Doctor of Technical Sciences, Professor, Honorary Worker of Higher Professional Education, Deputy General Director for Science of the Central Research Automobile and Automotive Institute (NAMI), a member of the editorial boards of the “Tractors and Agricultural Machines” and “Izvestiya “MAMI”” journals Sergey V. Bakhmutov passed away.
Sergey V. Bakhmutov was a prominent specialist in the following scientific fields: vehicle dynamics, active safety, optimization of design parameters, highly automated transport and technological facilities.
He was the author and co-author of about 170 scientific papers, including 20 books, 22 certificates of authorship and patents for inventions and utility models.

Izvestiya MGTU MAMI. 2023;17(2):207-208
pages 207-208 views

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