Introduction. The current regulatory documents do not enclose the safety assessment requirements for highly automated and unmanned automobile vehicles.

The purpose of the article was to analyze the current necessity of such an assessment. The proposed assessment method was to establish the requirements that must be imposed on highly automated and unmanned vehicles before they were released onto public roads.

Methodology and research methods. To agree on the requirements for the vehicles in Europe together with the UN Regulations attached to the 1958 Agreement, the safety requirements for highly automated and unmanned vehicles were considered both at the international World Forum, and on the regional level of the Eurasian Economic Union in the form of technical regulation “On the safety of wheeled vehicles funds” (TR CU 018/2011), as well as in Russia in the form of the Russian Federation Government decree of November 26, 2018 No. 1415 “On the conduct of an experiment on the pilot operation of highly automated vehicles on public roads”.

Scientific novelty lies in the proposed safety requirements that must be imposed on highly automated and unmanned vehicles before they are released onto public roads.

Practical significance. The results of the study can be used to improve the technical regulations of the Eurasian Economic Union in the field of automobiles and the development of the Russian Federation national legislative acts in this area.

Introduction. Currently, an intensive development is being carried out to create tracked vehicles equipped with traction motors, the use of which practically eliminates the mechanical drive (friction clutches or brakes) controls, organizing stepless rectilinear motion and rotation together with the partial kinetic recuperation of braking energy.

The purpose of the study was to conduct a comparative analysis of the electromechanical transmissions schemes of tracked vehicles with two traction electric motors.

Methodology and research methods. To provide the possibility of a electromechanical transmissions comparative analysis the article presented kinematic and power link equations which made it possible to describe in general terms the transmission-rotation mechanisms of tracked vehicles equipped with two traction motors. The following variants of the circuit design of the transmission were compared: on-board drive of the drive wheels, separate drive for rectilinear movement and rotation, joint drive for rectilinear movement and rotation. The criterion for evaluating electromechanical transmissions was the value of the installed capacity of electric motors (the product of the maximum moment and the maximum rotational speed of the rotor shaft), referred to the power costs necessary to ensure rectilinear motion. To carry out the calculations, a number of operational operating modes of tracked vehicles were formed.

Scientific novelty and results. The methods presented in this work allowed to conduct a comparative assessment of the applied various circuit decisions effectiveness of the transmission-rotation mechanisms in the developed tracked vehicles at the design stage. Their distinctive feature was the application of a single approach to the obtained solutions analysis. The result of the study was a scientifically based choice of rational schemes of transmission-rotation mechanisms for high-speed tracked vehicles with two traction electric motors.

Practical significance. In the framework of the article, a number of rational circuit solutions for the transmission-rotation mechanisms of tracked vehicles have been obtained, the use of which will reduce the total installed capacity of the traction electric drive and, accordingly, reduce the weight and size parameters of the electric motors used.

Introduction. Alternative energy sources are becoming increasingly relevant due to the rising cost of petroleum fuels and acute environmental problems. The most affordable alternative for Russia is natural gas. A number of studies have been carried out on the creation of a gas and gas-diesel engine for working on natural gas.

The purpose of the study was to create a method for the fuel supply calibrating of a gas engine using non-motor calibrations at a specialized experimental complex.

Methodology and research methods. The article describes and compares the traditional and proposed methods for calibrating the fuel supply of gas engines using non-motor calibration.

Scientific novelty and results. The proposed non-motor calibration technique has no analogues in the Russian Federation. The effectiveness of the innovation has been successfully tested. The article describes a new process for calibrating fuel supply step by step while demonstrating its efficiency in practice.

Practical significance. The application of the proposed methodology has reduced the volume and complexity of calibration work on the motor stand.

Introduction. When employing induction motors in powertrains of electric vehicles, one should take into account their energy efficiency, since a capacity of energy storage systems used in electric vehicles is limited. This implies choosing an electric drive control technique that satisfies criteria of both dynamic performance and minimum energy losses. This work describes an analysis of induction motor energy efficiency when considering two control techniques, namely the constant magnetic flux control (also known as the field-oriented control) and the constant slip control.

The purpose of the study is to assess the energy efficiency of an induction motor when it operates in a powertrain of an electric vehicle.

Methodology and research methods. Numerical investigation was conducted by means of electrodynamic equations describing a steady-state operation of the induction motor. A measure to compare energy efficiencies of the considered control techniques was introduced in the form of a quotient of the efficiency factors provided by these techniques and calculated for different values of the electromagnetic torque and the rotor’s frequency.

Scientific novelty and results. A method is proposed, which allows for an analysis of induction motors in respect of the energy efficiency provided by the constant magnetic flux control and the constant slip control, based on a quotient of the calculated efficiency factors. Furthermore, a connection is revealed between the electromagnetic torque exerted by the stator current and the power losses in the motor. The work justifies the selection criteria for the control technique and essential design parameters of an induction motor intended for an electric traction drive of a vehicle.

The practical significance of the work is constituted by the recommendations given on the selection of a control technique and design features of an induction motor taking into account its energy efficiency.

Introduction. Polycyclic aromatic hydrocarbons (PAHs), including benz-α-pyrene (BaP) and aldehydes (RCHO), are highlighted in the list of substances contained in the diesel engines exhaust gas. The specific toxicity of these compounds exceeds the toxicity of CO, HC, NO_x emissions by several orders of magnitude, as well as of dispersed particles normalized by modern environmental standards. Because of the analysis complexity the methods of eliminating the real toxicological BaP and RCHO hazards remain poorly understood.

The purpose of the study was to develop a method of BaP and RCHO analysis in diesel exhaust gas. Methodology and research methods. The article presents the results of the analytical means development to estimate BaP and RCHO emissions in some domestic diesel engines exhaust gases. To determine PAHs in diesel engines exhaust gas by the Shpolsky method the operation of sample preparation was improved and an original methodology of separate and total control using 2,4-dinitrophenylhydrazine was proposed to analyze RCHO.

Scientific novelty and results. To determine separate and integral (UN Regulation No. 49) emissions of BaP and RCHO from the exhaust gas of the D-120, MMZ-245.9 and YaMZ-236A diesel engines that are widespread in the Russian Federation the above analytical methods were used. Studies have shown that the toxicological effect of BaP and RCHO emissions is comparable to NO_x emissions, and therefore, their neutralization is necessary. The technology of catalytic oxidation of BaP and RCHO on alumina-platinum and alumina-palladium metal-block catalysts was proposed to solve this problem.

Practical significance. The complex of studies showed that being processed by such catalysts, the integral emission of BaP and aldehydes in exhaust gas decreased by more than 80%. The results of the work were confirmed by the catalytic neutralization of diesel exhaust gases converted to work on dimethylether.

Introduction. Economic growth, urbanization and the development of road transport have led to environmental pollution. At the same time, air pollution by solid particles which are not exhaust by vehicles in operation is of great importance.

The purpose of the study was to review the main types of environmental pollution made by vehicles in operation; analyze the problematic issues of estimating not-exhaust emissions.

Methodology and research methods. In the work the method of system domestic and foreign studies analysis of the main environmental pollution types, including by road transport, was used.

Scientific novelty and results. The article summarized the latest research data on the main types of environmental pollution and put forward problematic issues on the study of not exhaust emissions of vehicles in operation.

Practical significance. The article identified the problems for studing not exhaust emissions, the solution of which will help in determining the main directions of reduce particulate emissions of vehicles in their operation.

Introduction. Hydrogen, being a motor fuel, is of particular interest as a means to study the characteristics of the internal combustion engine working processes.

The purpose of the study was to identify promising areas for the hydrogen use as a fuel.

Methodology and research methods. Since the beginning of our century, very intensive research has been launched on the creation of fuel cell (FC) vehicles. Electrochemical generators based on FC technologies do not emit harmful substances, in addition, they are almost silent during operation.

Results. 15 years ago non-profit partnership “The National Association of Hydrogen Energy (NAHE)” came up with a proposal aimed at creating a legislative and regulatory regulation system to outstrip the market for hydrogen technologies and FC technologies both in our country and the world, as a whole.

Practical significance. In 2007, a Federal Law No. 496165-4 “Technical Regulations for the Safety of Devices and Systems Designed for the Production, Storage, Transportation and Use of Hydrogen” draft was submitted to the State Duma. In this regard, in 2008 at the NAHE initiative the Federal Agency for Technical Regulation and Metrology established the specialized Technical Committee for Standardization TC 029 “Hydrogen Technologies”, mirroring the ISO Technical Committee of the same name (ISO/TC 197), and which in 2010–2020 has developed a system of 33 national and interstate standards most of which were identical to international ISO and IEC standards.