The article contains analysis of public-private partnership perspectives for transportation sector of Russia in terms of improvement of transport infrastructure quality.
The article describes strength calcualtion on the casted axle housing of the truck using FEM-software and its further form optimization with topology optimization software, performed for RD center of KAMAZ JSC. The optimization provided 17% mass reduction of the casting.
The article considers the problems of reliability of the basic units of the front axle of the truck by means of change of angle of a plane of rotation of steered wheels at curvilinear movement. The authors show the calculations proving reality and practicability of realization of reliability increase.
The paper considers mechanical characteristics of automotive tyres. The authors show that influence of lateral force on a wheel not only causes lateral deformation of the tyre, but also increases her normal deflection.
The article considers the mathematical model of engine start system with a starter supplied from capacitive energy storage.
Article is dedicated to study of the influence of damping in running gear units and stabilization arm of steerable wheels on their free vibrations.
The article tells about requirements to magnetic system galvano-magnetic gauges, critical parametres, characteristics and principles of work of the newest encoders produced by known firms in this area. The authors give comparisons magnetic-resistive gauges with gauges on Hall effect. The paper includes examples of use of the Hall effect in development of magnetic system of the contactless throttle position sensor for LADA 110 and LADA Kalina.
The article is about development of methods for improving of acoustic characteristics of diesel engines. This article gives proof of the necessity to create the highly effective muffler for diesels. The authors also offer ways of improvement of the design of the mufflers.
The article is about the method of a value of harmful impact to a soil of all-wheel drive vehicle considering the basic destroying factors deformation and shift of a ground. The authors make analysis of the basic design features of the vehicle influencing formation of a track.
In a hybrid electric vehicle (HEV), IC engine can be operated independently (to a certain extent) of vehicle's speed and power demand. Therefore, there is a substantial flexibility in adjusting HEV's fuel consumption and emissions by varying ICE's operating point. Due to high complexity and non-linearity of hybrid powertrain's characteristics it is necessary to use some mathematical tool to derive an optimal combination of ecological and energy consumption properties of HEV. It is generally accepted that dynamic programming (DP) is well suited for such a task. A DP routine based on the HEV's model was developed and implemented in MATLAB/Simulink environment. A number of runs were executed. Results have revealed an apparent trade-off between fuel effectiveness of HEV and NOx emissions. Based on comprehensive analysis of results, certain ways to deal with this trade-off were offered.
The article analyses the role of information-measuring systems in improving of wheeled and tracked vehicles testing process
The resulting data of the analytical review that been held during research engineering against State contract № П1131 02.06.2010 are described in this article. Submitted data characterize present status of the issue and define problems that appear in case of designing multi-drived wheeled vehicles with off-road capability and become basics for development of methods for building automatic adapting controlling systems for adjusting transmissions for that kind of vehicles.
The article describes the classification of the interferences influencing on work of station of power supply systems.
The influence of dimethyl ether additive in methane−air mixture on the combustion process of HCCI engine is reported. Computational experiment has been conducted on two models of the working process of HCCI engine. One of them is a single-zone chemical-kinetic model and the other is a mathematical model based on formal chemical kinetics. The results of the numerical experiment are supported by data from full-scale experiment.
Now the motor industry is guided by work with system suppliers therefore there is important an exact formulation of technical requirements to knots and car systems. The article presents the information about test equipment for definition characteristic force-displacement on a clutch pedal.
This paper presents a method to study of the influence of structural parameters on the dynamic load in the mechanical automotive transmission with hybrid power unit (HPI). The results calculation dynamic loads in the branches of UAZ 5153 parallel hybrid drivetrain are presented.
The authors propose the variant of model of the intake system a particular type, taking into account the specificity of high-speed internal combustion engine. The basis of this model is the principle of converting the acoustic impedance. The algorithm of this model is formed on the basis of joint consideration of the equations of conservation the impulse, mass balance and condition. The model is characterized by flexibility and can be used to analyze of the charge state in any local area of the intake system a complex configuration or the whole system. The proposed procedure for modeling of unsteady gas flow at the intake causes the possibility of finding a limit increasing the torque of internal combustion engine at a predetermined section of its speed.
The article analyses conditions of lubrication film formation in the friction pair gap of face seal.
The article considers the multipurpose regulator of pressure for generating installations of new generation. Application of a new regulator of pressure allows to exclude the additional rectifier from the scheme of generating installation that essentially raises its reliability and reduces cost. Besides the multipurpose regulator provides the lowered frequencies of excitation of the generator and expansion of diagnostic functions, especially indications of the raised pressure of a network, breakage of a phase conclusion or malfunction выпрямительного the block. The system of protection of the regulator of pressure is essentially expanded also at occurrence of emergencies, thermal protection in particular is entered. Application in the target cascade of a multipurpose regulator of pressure of the field transistor and high-speed Shotki diode has allowed to reduce factor of pulsations of target pressure and a range of change of instant values of pressure.
If the vehicle has individual drives of the leading wheels, and their traction loads or friction conditions are asymmetric, the stability of strait-line motion needs difference of theoretical speeds of both sides. This difference cannot be programmed before, and can be made by the driver within manual operation, but automatic or remote control needs automatic correction on the base of trajectory measuring. There is a similar problem connected with automatic correction of turning control high-speed truck vehicles under conditions of possible skidding. We consider as the most comfortable using of angle speed sensors.
The paper presents an application suite STABCON 2.0 designed to solve multiobjective optimization tasks for improving the active safety of the vehicles. Universal software MOVI is used as an optimization module.
The paper describes a two-phase method of multiobjective task solution in mechanical engineering according to steerability and stability criteria. The method allows to solve tasks involved in automotive design subject to roadway covering characteristics in the driver-vehicle-road system. The paper describes laws of suspension adjustment by stiffness and damping parameters subject to various road conditions.
This article presents the research results for influence of electrochemical machining parameters for 1201 alloy on the values of the arithmetic mean deviation Ra of the surface profile and select the best mode of electrochemical treatment of 1201 alloy in the experimental setup EU5.
The spectral luminescence properties of poly-p-xylylene films irradiated by impulse UV- laser were studied. It was shown that the UV-laser irradiation to leads to the effective formation of new optical emission centers in the polymer chain. The fluorescence band of these centers is found over the visible range.
The article shows that influence of an error of volume of initial preparations and an error of regulation of screw and crank presses make various influence on accuracy of the hight sizes of received forging.
The article is about the tests of a mobile technological unit. The objective of investigation is to develop the grinding techniques for sealant surface formation inside valve housing.
The computer-aided warpage computation system is considered in the paper as applied to technological process optimization for manufacturing of aviation parts. The authors give recommendations on technological process optimization for the aviation part frame
The main objective of this research is the analysis of influence of optical and thermo radiating characteristics on the transient (steady state) temperature distributions inside the heat-insulating semitransparent (SHIC) и opaque (HIC) coatings for thermal regulation and control of walls and elements of the combustion chamber (СС) high speed diesel engines. Developed author's methodology of physical and mathematical simulation of parameters of the radiant and heat conductivity transfer was used to calculate optimal balance of optical and thermo radiating characteristics of coatings - as selectively absorbing and scattering materials with different transmittance, reflection and emittance depending on wavelength diapasons of irradiating or radiating heat fluxes. The paper presents a mathematical simulation of optimal balance of improved optical (transmittance, reflectance, absorption coefficients or absorption, scattering indexes) and thermo radiating (emittance coefficient) characteristics. It is considered the effect of the subsurface volumetric heating which at their display promotes decreasing of a surface overheating of coatings of the combustion chamber. It have been received by the numerical method temperature distributions for semitransparent heat-insulating coatings protecting metal substrate (CC wall) with different reflection of penetrating radiation by SHIC layer. It has been shown decreasing the surface temperature of SHIC in comparison with temperature of opaque HIC. The methods of improvement of thermal isolation of the combustion chamber with use heat-insulating coatings c are offered: 1) high volume reflection rλ > 60-80 % for thermal protection (barrier) against intensive radiation of red-hot soot particles of soot (λ ~ 0.7-2 μm) and 2) high surface emittance ελ > 80-90 % (λ >4- 5 μm) for counteraction convectional heat flux inside CС a diesel engine.
High-porous grinding wheels are recommended to improve productivity and quality of grinding of complex contoured tools manufactured of high-quality tool steel. Laboratory and manufacturing testing of such grinding wheels at Federal State Unitary Enterprise Salyut indicated their high efficiency.
The article considers basic thesis of two-exponential model of magnetophoresis control of analyzing mediums samples. Data of ferroimpurities mass and those concentrate definition are given for moulding mixture and sugar.
The efficiency of usage regularization method for solving ill-posed geometrical measurement tasks on small areas in stated in article.
The results of investigations of properties of nanostructured coatings are described. The project contains study of electrode potential of specimens with coatings, corrosion and relaxation resistance, tests of thermal cycling. Obtained results allow to estimate advantages of nanostructured coatings in comparison with single-layer and multilayer coatings.
The paper studies the influence of citrate and oxalates - ions on kinetics of dissolution of manganese dioxide. It is found that the speed of dissolution increases along with concentration of citric and oxalic acids. Orders on citrate and to oxalates - ions are designed. The empirical formulas describing dependence of speed of dissolution from concentration of the specified acids are offered. In order to obtain the optimal modes of leaching of manganous oxide from anthropogenic raw material the authors investigate the influence рН on the speed of MnO2 dissolution in oxalic acid.
The paper offers the method object resource valuation a in the conditions of quasimonotonous aggravation of system quality parameters, invariant concerning a class generally a non-stationary stochastic process of difficult structure.
The results of numerical simulation of excited-by-friction relaxing oscillations of an electric rudder drive at variable input signal speed are presented. The effects associated with influence of the drive parameters on the oscillations characteristics are considered.
The paper presents a research of dependence of adsorption of different ions on a titanium dioxide surface on the pH medium. Equations describing the dependence are presented. It is offered to describe the dependence by means of the acid-base equilibrium that arises on border of TiO2 electrolytic solution phases. It is found that the value of ion adsorption depends on pH. Optimum рН values which were obtained in the course of experiments are presented.
The paper examines of outlook of the competitiveness management theory on the basis of intangible assets. The authors propose to differentiate between the traditional accounting and administrative approaches to the structure of intangible assets.
The paper considers the questions involved the use of scientific potential of high schools to emerge from the system and world crises.
In economic theory of the transition period there are several basic lines of development of economic thought, with its understanding of the subject of economics and the main path of development.
The paper presents an analysis of financial, economic and manufacturing areas of Russian economy. The authors provide an analytical apparatus for assessment of economic system, which makes it possible to determine a economy stability factor and degree of economic crisis risk. This information can serve as a basis for management decisions.
In Frank's sense-object and rationally-rational epistemology, basing in its historical intention on the most important concepts of Russian philosophy, such as "Love", "All-Unity", "Experience", "Spirituality", is supplemented with transrational form of knowledge - intuitive perception of the world in all its substantive and spiritual fullness of "living knowledge" as "knowledge - life".
This article argues that in the era of information warfare the development of a meaning theory and its applications becomes a strategic objective.
The paper considers the quantitative methods of competitiveness estimation of motor industry production.
In the clause influence on a market share of national cars of level of non-uniformity of income distribution among the population is described. Necessity of improvement of quality of cars of the Russian production and the problem resolution of social intensity is proved.
The paper examines the implementation of the proposed method of CALS-technologies at the automotive industry enterprises.
The paper considers the use of graph method in reliability theory subject to practice of technical service.
The paper reveals the role of normative and technical documentation in the quality assurance of educational services and competence of automobile engineers. Recommendations on reconsideration of the role of normative and technical documentation as methodical basis in sphere of vocational training are presented.
The paper highlights the questions of fundamental education as the bases for making a top-class expert and the problem of moral and spiritual values of young experts as the representatives of an intellectual level of a society and the persons who bear the responsibility for the future of our country.
The paper suggest the methodology of virtual laboratory works for Hydraulics, hydromachines and hydraulic transmissions. Similar laboratory systems are needed for further progress of distance learning system in Russian Federation.
The paper substantiates the need for territorial corporate space, based on the concentration of the intellectual capital of universities and large enterprises, that will consolidate the efforts of key business entities to implement the main perspectives of socio-economic development of the region.