Economic-probabilistic method assesses the feasibility of tactics for MAINTENANCE and operating time and technical condition for buses equipped with electronic control units. The scheme of determination of limit values of diagnostic parameters is proved. It is shown that the implementation of the STATE is appropriate when the economic costs associated with the cost of diagnosing and forecasting the technical condition of the buses are not decisive.

Keywords: strategy, tactics, method, parameter, maintenance, repair, cost, reliability, operation, technical condition

The article proposes a scheme of modernization of the gasoline engine to work on a gas-air mixture. This article discusses the technical characteristics of the engine on gasoline which is recommended by the manufacturer. The characteristics of the engine operation on the gas-air mixture without alterations, and the characteristics that the engine shows when working on the gas-air mixture with the already made changes are also given.

Keywords: car, gas equipment, intake valve, compression ratio, mixture pressure

The simulation variances of the final volume considerably simplifies the solution of certain problems of reliability. The collection of information for aggregates of large volumes is impractical because of the duration and high cost. Therefore, the analysis and calculation are subjected to a representative sample. To move from sample data to finite volume population parameters, an analytical method for determining the Weibull parameters for the population was used. Analysis of the analytical method for determining the parameters of the three-parameter Weibull distribution for the aggregate confirmed the possibility of using the method of modeling statistical data of strength and life of parts and components of machines. The calculations proved that in practice it is possible to use both the value of the shift parameter and the value of the extreme terms of a number of the population.

Keywords: reliability, analytical method, simulation, General population of finite volume, the sample, the Weibull law, strength, resource, detail, Assembly, machine

The technique of improving the quality of remote diagnostics of cars is proposed. This method makes it possible to learn real-time and real-time information about the status of the functional units of the car, thereby assessing its technical condition.

Keywords: remote diagnostics, car service, car

The method of calculation gamma percentage fatigue resource of an arrow shovel excavator. Using this method can most accurately determine the distribution of the extreme members of samples and the corresponding shifts of the Weibull distribution. It was found that to calculate the shifts do not have, you can use only the extreme members of samples.

Keywords: reliability, probability, resource, sample, excavator

In article the method of calculation gamma  percentage fatigue resource of an arrow shovel excavator for population of final volume, by means analytical method of definition parameters of Weibull distribution is offered. 
The made computing experiment has shown that the developed method allows to receive gamma percentage value of a fatigue resource of an arrow shovel excavator by means of transition from the sample data to the population data.  

Keywords: a resource, an arrow, shovel excavator, population, Weibull

In article the refined method of calculation gamma  percentage fatigue resource of an arrow shovel excavator for population of final volume, by means analytical method of definition parameters of Weibull distribution is offered. 
The made computing experiment has shown that the developed method allows to receive gamma percentage value of a fatigue resource of an arrow shovel excavator by means of transition from the sample data to the population data.  

Keywords: a resource, an arrow, shovel excavator, population, Weibull

The method of definition distribution Fisher-Tippeta parametres of final volume population (Ас, Вс, Сс) under the selective data of the average stress is offered in the given work. Average values of parametres (Ас, Вс, Сс) thus is recommended to use at repeated modelling. Thus the Ас, Вс, Сс received is recommended to use average values of parametres at repeated modelling.

Keywords: the selective data, stress, Fisher-Tippet distribution, population, modeling.

The analytical method determination parameters of the three-parametrical Waybill distribution for final volume population on the basis received parameters on a sample is stated in this work The algorithm of calculation on which computing experiment is made is presented. On the basis of these calculations the conclusion that it is necessary to determine by this analytical method parameters of the three-parametrical law of Waybill for set of final volume on the basis of the received parameters on a sample is drawn.

Keywords: population of final volume, sample, dispersion, an average quadratic deviation, distribution parameters, durability became

In this paper, a comparative analysis of the shift parameter distribution initial set of calculated analytical method and simulated, obtained by computer simulation using sample data. Error δi shifts between the parameters listed in the table and plotted errors on the scope and volume of the aggregate.
Thus, increasing the volume of the aggregate error is reduced from 30% to 1% at a constant volume sample m = 50.
Keywords: sampling, aggregate, volume, range, accuracy, distribution, performance analysis, engineering, reliability.

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