Abstract The mathematical description of the static characteristic of the vacuum servo of brakes has been lead in view of manufacturing tolerances of determining elements and pressure of an elastic element
Authors: V. Korchagin, U. Lopuhov, G. Musaelyanc, E. Pavlenko
Abstract There is connection between set of affected characteristics and those engine subsystems, which contain defective units. There are many methods of technical state of engine system. But one of the basic methods is the diagnostics of secondary circuit of ignition system, using oscillograph.
Keywords automobile diagnostics, oscillograph, ignition system, discharge voltage, combustion voltage, burning time of spark.
Abstract Article is devoted development of the existential concept, increase of efficiency of use cars and motor transportation systems in winter operation conditions. Influence of variable service conditions on efficiency of use cars is considered. Identification of cars on level of adaptability to winter operation conditions is offered, allowing analytically to define, in what measure of their design answer service conditions.
Keywords operation, design, adaptability, working conditions, identification.
Abstract Theoretical problems of formation of rational structure of city passenger transport of large cities are practically solved. However the majority of cities of Russia has the population 300 - 700 thousand persons, therefore this problem there costs more sharply. In this connection, authors statement of problems for the decision of the above-stated problem on the basis of advanced classification of motor transportation system of small and average cities is offered.
Keywords optimization, structure, city passenger transport
Abstract In article mention actuality of diagnosing braking systems in automobiles. The article deals with results of the analysis of methods and technical means, for estimation effectiveness of braking and steadiness of car. Suggest a new methods and complex of technical means for diagnosing braking systems automobiles on road and stand techniques.
Abstract There is a consideration of the problems, connected with formation and analysis of poly-factor mathematical models of spare parts expense by municipal buses in exploitation.
Keywords buses, spare parts, mathematical model, exploitation, main components.
Authors: M. Morshchilov, V. Prikhodko, O. Seliverstova
Abstract Because of its essential and sometimes unique character, ultrasonic technology is represented today almost in all the processes of main and repair production of machinery, especially in the precision machinery industry and instrument engineering. Ultrasonic’s technological field of application includes almost all the processes, starting from preparation and ending with assembling, preservation and depreservation of components. The application of ultrasonic equipment on transport and in transport machinery is of a special interest. This is due to the exclusive standards to the reliability of critical parts and units, and to the safety of the transport machinery in general.
Abstract In the article the physical factors rendering the greatest influence on course of process of ultra-sound clearing are considered. The analysis of influence of various acoustic currents on erosive activity of a zone of ultrasonic processing is carried out. Features of ultrasonic clearing with direct use cavitations bubbles are given.
Abstract In the article the basic stages of modernization of the vehicles, performance indicators and criteria for modernization are briefly considered.
Authors: L. Petrova, V. Aleksandrov, L. Shestopаlova
Abstract The new technology of nitration process consists in separate and consequent usage of air and ammonia (segregation of saturating atmospheres), that contributes to forming of oxide layer at the surface that allows generating the multilayer coatings with regulated structure and perfect performance attributes.
Abstract There are shown algorithms of local tracing of roads based on elaboration of evolvent differences with conversion them in normals. It is implemented a program complex SPLIN functioning for the mainframe and IBM PC.
Keywords algorithm, local tracing, evolvent differences, normals, program complex SPLIN.
Abstract The article addresses details of design calculating and engineering for separable overpass superstructures with junctions and branches, typical for multi-level urban traffic interchanges. The results are outlined that present stress distribution patterns for the separation zone of a superstructure and pole. The stress fields specific for separable superstructures for various pole diameters are given. Certain summaries are made useful for designers and further research.
Keywords finite element method, viaduct, span of a bridge.
Abstract In article the definitions of freight motor transport system and demand irregularity for freightage are given. Regularity of changing of efficiency measure of freight motor transport system depending on its adaptability level and demand irregularity for freightage is established and analised.
Keywords road freightage, adaptability of market conditions, demand irregularity for freightage.
Abstract In the article described the methodology of option the concrete forms of economic use for different types of urban public transport property complex objects. Recommended the nomenclature for forms of object economic use. Substantiated the sequence of creation and realization of object economic use business projects based on the system of economic efficiency criterias.
Keywords urban public transport property complex objects, forms of economic use, forms of economic activities, economic use business projects, economic efficiency criterias.
Abstract The article covers the most topical modern economic problem - the economic crisis. Authors analyze the causes of the economic crisis and its effect. The special emphasis is made on modern objective laws of financial sector functioning and how it exerts influence upon the economy. The article suggests the crisis management plan issues.
Keywords crisis, stock, financial sector, real economy, modernization of economy.
Abstract In article are considered the order of formation of the investment-financial program of development of the road enterprise with use of dynamic model of linear programming.
Abstract Directions of the development of the innovative activity in construction were considered. The particular attention is paid to activation of the innovative activity of a building production enterprise.
Keywords innovative activity, innovative, building production.
Authors: P. Panov, D. Zaitcev, L. H.Thang, S.V. Mazurenko
Abstract The present article considers development of algorithm of analysis of spikes of road surface elevation mark values and detection spikes region. The spikes occur as a result of appearance of hitting objects in the capture region which don’t belong to the road surface.
Abstract The growing role of motor transport in pollution of atmospheric air in cities is shown. Results of research of the mechanism of distribution of pollution from motorways in a zone of inhabited of building are stated. The factors influencing a level of pollution of territories, adjoining to highways are classified. On an example of Arkhangelsk possible approaches in decrease ecological to risk are considered at increase of intensity of movement of motor transport.
Keywords motor transport, intensity of movement, ecology.
Abstract The basic attention is given to control systems of quality product of asphalt-concrete mix. Analytical dependences of control are presented, stabilizing the required quality mix. The changing of component properties, technological processes or the mix ingredients is determined for its stabilization at the necessary level.
Keywords asphalt-concrete, granule measurement, quality of asphalt-concrete, operational administration, dispensing of components.
Abstract Сonsidered main directions of passenger transport service improvement, proposed the mechanism of main quality transport service criteria formation, developed procedure of bus transportation supply standard calculation.
Keywords passenger transportation, criterial rating, bus transportation.
Abstract Main prospects of certification service procedures implementation in automobile transport sphere are considered. The mechanism of formation of requirements for proper quality and safety level of dangerous cargos transportation is offered. The model of formation of minimum sufficient requirements for ensuring the safety of transportation process is developed. The model of formation of Risk of new accidents appearance estimation and of new incidents and their cost form for concrete segment of the transportation service market estimation is developed.
