«Vestnik Moskovskogo avtomobilno-dorozhnogo gosudarstvennogo tehnicheskogo universiteta (MADI)» | Number 3(18), September 2009

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

Keywords
brakes, brake drives, vacuum booster, non-linearity, watching action.

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.

Keywords
automobile, braking, diagnostic equipment, methods, technical means.

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.

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.

Keywords
ultrasound cleaning, dismantling, bitumen, adherence, drying.

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.

Keywords
ultrasound, ultrasonic cleaning, acoustic streams, cavitation

Abstract
In the article the basic stages of modernization of the vehicles, performance indicators and criteria for modernization are briefly considered.

Keywords
vehicles, modernization, evaluation criteria.

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.

Keywords
segregation of saturable environments, oxide barrier, controled structure, dispersed hardened structure, nanostructured layer, chemicothermal treatment.

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.

Keywords
model, optimization, investment-financial program, road enterprise, financing, investment.

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.

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.

Keywords
road bed, dispensation, image analysis, segmentation, pattern recognition.

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.

Keywords
dangerous cargos transportation, certification, risks.