The paper analyses the possibility of using Sun energy on vehicles. The authors consider the problems arising with development of these vehicles and ways of their solution by the application of perspective photo cells and storage batteries.
The offered paper examines the features and results of practical use of molecular stores of energy for start of internal combustion engines of the special equipment, received in the Ryazan military automobile institute.
The subject of the paper is the increasing of the smoothness of truck vehicle running due to application of coupled system of cushioning. On the basis of the given mathematical model it becomes possible to determine the basic characteristics of smoothness of truck vehicle running with the coupled system of cushioning. To prove of reasonability of use of coupled system of cushioning on the trucks the authors compares some experimental and calculated characteristics of the smoothness of truck vehicle running with individual and coupled systems of cushioning.
The article describes the principal scheme of modern gasoline engine electro-magnetic injector (EMI). The authors present the oscillogram temporary fragments of transitional processes of EMI and the principal scheme of control impulses' formation.
The concept of perfection of laser-spark system of ignition of the transport engine is described. The mechanism of efficiency of laser-spark system of ignition modern ICE is explained. Basic and constructive schemes of the control system and their components are developed. Results of tests are derived.
The paper considers the methods of choosing the basics kinematic parameters of shift and turn mechanism and hydromechanical transmission in the mode of truck linear motion with providing of full and work range of speed control.
The scientific ideas about possibility of using a new risk model for the prediction of appearance of dangerous situations in transport complexes is developed. Catastrophe risks are evaluated as measurable random events in the framework of probability space theory.
One of the scientific concepts for the system operation of safety providing - monitoring and risk and reliability management - is developed. The paper offers an approach for the creation of instruments, procedures, methods and controls for measuring of risks significance in the transport complex.
The article is about the problems of evaluation of informational technologies at the technical-organizational systems control. To build the criteria of evaluation, one should consider the system consisted of separate modules with appointed functions. The author notes the significance of choosing algorithm of information processing and the necessity of evaluation of possibilities of control decision of mechanical implementation for logical design.
Nowadays the application of variable-speed transmissions (mainly, electric and hydrostatic ones) is considered to be the most perspective for all-wheel drive cars. In given article is considered hydrostatic transmission which is the best object for creation of an automatic control system. There is a possibility of optimisation of characteristics of any object adapted for automatic regulation. In article conditions of optimisation of power indicators of the car on criterion of minimisation of the general losses of capacity, and ecological indicators of the car by criterion of minimisation of size of slipping are resulted. The example of practical realisation of the car with the hydrostatic transmission, having automatic control system is resulted.
The paper examines the influence of channel geometry on hydrodynamics of an oil-air mix for the purpose of increasing the intensity of heat exchange from a ball-bearing support of high-speed turbocharger. The parametrical analysis of channel geometry is carried out and the optimum variant of cooling which would raise concentration of oil on the internal ring of the bearing is chosen.
The article presents technology of car suspensions static strength and durability analysis, developed in AVTOVAZ company and applied on the vehicle concept development phase. Wide application of CAD/CAE technologies enables on early development stage to determine parameters of vehicle suspension typical operation modes and then quickly evaluating design capacities, basing on virtual testing results analysis. Usage of developed methods allows to enhance the quality of project and at the same time, to reduce time and costs of vehicle suspension development.
The paper considers the questions of automobile tires. Questions of perspective development of automobile tires are touched upon.
In connection with outlined tendency to step up on-board voltage (42/36 V) the paper considers the possibility of gradual partial transfer on two voltage levels: traditional 12 V and prospective 36 V. Supplementary voltage 36 V formed by electronic way by effective transistor voltage transducer. The paper considers theirs electric circuits and examines specifics of their work.
The problem of providing of a demanded level of accuracy of details and conjugations at manufacturing and assembling of diesel engine is presented as a many-sided problem for solution of which the structure and interrelation of factors influencing on initial operational accuracy of details and conjugations is offered. For the first time the concept of initial operational accuracy is introduced. The mechanism of formation and inheritance of the errors is discovered, allowing to find a stock of accuracy of details and its quantity.
The mathematics model of mechanism which forms the spot face of rolling wheel is offered. It allows solving tasks involved in design and calculation of wheel propeller of different constructions, determining theirs numerical and qualitative characteristics when moving on different types of surface.
The article outlines the analysis and proposals based on it, justifying the rational combination of the characteristics of diesel engines and transmissions (gearboxes) of wheeled tractors and agricultural tractors. The author uses quite modern models of tractors of well-known companies. The conclusions are based on practice of ECP (engines constant power) for the vast majority of tractors.
Article contains results of the theoretical analysis revealed by practice of ZIL trucks drawback. Stability of work of the engine is analyzed at acceleration with gear shift. The inequality describing a condition of engine steady work is deduced. In article the kinematic coordination of various models of ZIL trucks is considered and it is noticed that truck ZIL-5301BE has kinematic in coordination of engine and transmission. Ways of its overcoming are shown. The Law on higher education and after graduate professional education of Russian Federation as one of the tasks of higher institute provides the use of scientific researches in educational process. The authors offer the results to students of Moscow state industrial university in the lectures on special disciplines.
Article is devoted to development of design and methodic of projecting the new type of resilient member, generated out of composite material. The construction, its schemes of loading, the result of optical and FEM modeling of elastic element, the results of experiences with the designed samples of elastic elements attached. On the basis of the given investigations the authors made the conclusions and recommendations for receiving the demanded characteristics of rigidity during homogeneous mode of deformation-stress of element. The example of design of suspension bracket with use of new type elastics element, created from composite material is resulted.
The basic parts of thermal engines automatic control systems and methods of the differential equations solution describing work of these parts, with computer program Mathcad using are considered.
This work presents an experimental investigation of influence of structural condition and thermal treatment on the thermoemission properties of the refractory alloys. It has been found that the combination of high-temperature strength and thermoemission is reached by creation of certain volume and surface structural conditions of cathodes.
On the basis of mathematical model of forming process during the push broaching the authors investigated the influence of dynamic fluctuation of roughing tooth tip on the geometrical parameters of work piece surface quality. The obtained results allowed offering recommendations on the work piece surface quality improvement on the basis of modernization of cutting tool design.
The electrochemical machining (ECM) is based on the various simultaneous interacting processes: chemical, thermal, electrical ones, masstransfer processes and others. The application of principles of synergetics allowed coordinating the process control on the basis of order parameter of anode current density related to with the hygrodynamics and composition of the electrolyte, electrode voltage and others properties of ECM . The realization of synergetics principles is carried out on the basis of use of bipolar electrode, which functions as the self-controlled mechanism.
The changes in vibration safety of industrial objects in the conditions of reconstruction of external environment. The authors carried out the experimental research of vibrational speed levels changes in the buildings structures at different shop floors of NPO IT. The paper presents the necessary calculations which allow choosing appropriate shock-absorbers, which compensate vibration transmitting from internal work process at NC machine to control unit, as well as external vibration. The diagram of shock-absorbers installation directly in the concrete bottom is offered. To provide the general safety of new industrial building a special substructure absorbing external vibration is proposed. Some practical recommendations are given.
At present glasswork is characterized by following shortcomings: lack of modern progressive high technologies and narrow assortment of products. Thereby the developed automated program complex based on COMPASS 3D v8 allows to raise profitability of glasswork by cost cutting for a complete set of tooling - the glass forms for production of glass containers of the original forms under conditions of small-scale manufacture.
Moskovsky podshipnik enterprise uses the tool machine RAV-130 by Verkon company, Ukrain instead of 16K20F3 machine tool for treatment of radial ball bearing race. This tool allowed increasing productivity and working accuracy. The working accuracy was improved by design of tool carrier. This was proved-out by tooling system simulation of 16K20F3 and PAB-160 machines using Solid Works software. To investigate simulation objects the authors used COSMOS Works integrated package. Solid modeling demonstrated the advantages of design of tool carrier of PAB-160. This simulation can be applied when choosing new tool machines.
The model of liquid flow in the window between balls of granulated medium is developed. Equations for local velocity of the flow in any point of the window and its surround are obtained. Particular forms of local velocity equations are given (velocity profile for points placed on the window diagonal).
The article considers simplification of curves of average magnetic permeability for ball chain and for granulated medium, and average induction in such quasi-solid magnets.
In engineering practice the solutions of nonlinear differential equations assume ever greater importance. Euler equation of elastic is the particular solution of such kind. The paper examines approximate solution and its applications. The comparison with previously obtained results is made.
To describe the axisymmetric deformation of circular cylindrical shell under uniform transversal pressure or in the condition of uniform compression the Marherr equation is used. The paper examines the bedding-in of the shell at the support contours at the condition of free axial displacement or without it. For the given boundary problems the analytical solutions in primitive functions is obtained and the main loading line of the shell is drown up.
The problems of the high-precision and automated control are actual for all branches of modern mechanical engineering. The main control problems in mechanical engineering can be effectively solved only with the use of computer laser measuring systems with two optical the turned channels (LMS TOTC). The following issues are described in the article: the developed program-algorithmic solutions for multi channel precision measuring systems automation (which can be integrated into operating automated control systems of technological processes); software of supervision, gathering, record and storage of the measuring information, and also automated data processing and objects visualization means and controlling methods are considered.
For the mathematical presentation of flat triangular element its parametric approximation is offered. The possibility of such approximations is shown. The area of changing parameters is determined. Actual for the CAD geometric problems with flat triangular elements such as the determination of accessories of spot to the triangle, determination of cross point direct and planes of triangle, spots projection on the plane of triangle is considered. Algorithms of their deciding and given evaluations of calculations volume are offered. Long-term use of considered methods of problems solution in the of applied software has shown theirs efficiency and high reliability.
The authors recommend universities to change the method of foreign language learning. The study of foreign languages will not be efficient without the knowledge worked out by the particular foreign language speaking country. According to this the program for foreign language study should be interdisciplinary.
The article analyses shortcomings of medium-term programs in the Russian Federation which should provide, first of all, competitiveness of national and regional economy and thereby proves reforming of the system of public administration on the basis of methods of management: systems the balanced parameters; strategic planning; management on the purposes; material stimulation.
The article reviews the factors stimulating industrials to intensification of technological policy; quick analysis of possible sources for investment of technological policy; problems of transition to active technological policy; outline of basic forms of fixed capital stock reproduction. The article indicates necessity of keeping of optimum relationship between all forms of fixed capital stock reproduction.
Improvement of personnel management quality is a basis for effective work of the whole organizational system. The article is devoted to a problem of an assessment and certification of personnel of the organization. It presents professiogram, the technique of personnel assessment.
The article considers analytical relations and results of computer calculation of optimized time of innovation technique implementation, by given ratio of gain versus cost.
The article considers actual problems of searching new pedagogical technologies on base of the practical experience of History and Policy Department to improve the quality of education.
The article presents layout of experiments for observatiion of polarizing effects on light passage through crossed polarizers. Addition of the third polarizer leads to appearance of light on the screen. Experiment is for cases with a laser light source, reflection of light under the Brewster's angle. Photos of the installations realizing the given effects are resulted.
The paper examines the role of unassisted student's work in general technical disciplines.
The considered model allows: 1) in the analysis mode to evaluate the efficiency of WLAN which functions in the mode ESS taking into account collisions of data packets-receipts transmitted through low duality communication channels, and 2) in the synthesis mode to select the threshold value of P, determining a rational combination of base access mechanisms and RTS/STS .
The article is devoted to formation of Student's marketing agency within frames of university. It allows to fix the knowledge received on theoretical rates of studied disciplines in practice. In addition it also carries out other functional loadings.
The article reviews conditions and mechanisms of forming conflictological competence in higher education which is based on the idea of contextual education. Methods of mathematic statistics for relation between future managers and their studying in the university are used as an example of experimental part.
The article reviews academic papers on assembly technique composed at Manufacturing Engineering Department of MSTU MAMI at various times. There are results of scientific and practical works on assembly quality assurance for automotive gears, on assembly with glue and vibroassembly.
The low level of reliability and high cost of assembly equipment do not secure the possible economical efficiency. Thаt is why it is very important to optimize the assembly unit performance at the designing stage. The main aim of this work is to choose the required performance of assembly modules using the proportional allotment of unit components reliabilities to increase the automotive production efficiency. This method will make it possible to analysis the most varied combinations of unit reliability to get the required production efficiency.
The experimental facility for robotic assembly on the basis passive adaptive grip and low-frequency oscillations is presented.
The paper reviews the kinematic scheme of multispindle nut-running machine of new class which provides the qualitative gripping of cluster screw joint.
The article presents the results of experiments involved in investigation of properties of some domestic and foreign-made anaerobic materials in components and units operating in fluid and aggressive environments. These experiments determined the strength and swell values of anaerobic products in the sea water, fuel and oil, and confirmed their anticorrosion properties. The experiments demonstrated high resistance of anaerobic products to various fluids and aggressive environments, which makes them applicable in different installations operating in such conditions.
The article deals witch the development of scientific foundations for automatically module technologies of the flexible automatic assembling production. A complex model of process of flexible automatic module assembling has been created. This complex makes it possible to reveal the regularities of its passage as a set of all kinds of connections. The flexibility in such systems is provided at construction, technological, algorithmic levels being estimated by the adjustment coefficient.
The paper examines the assembly technology based on the connection adjustment method, which allows to determine the optimal special location of fellow pieces. The designed procedure allows to forecast the coefficient of efficiency of a workpiece at an assembly stage.