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The purpose of the research is developing tools for forecasting changes in the service system when expanding the fleet of gas-engine vehicles. Research objectives: consideration methods for reducing emissions of harmful substances in exhaust gases of motor vehicles, consideration the features of the organization of technological processes in the service system when launching vehicles with alternative fuel to the market, developing a simulation model of a service center specializing in the repair and maintenance of diesel and gas vehicles. The following research methods were used: methods of system analysis and mathematical statistics, simulation. Three groups of measures aimed at reducing harmful substances in vehicle exhaust gases are described. It is shown that the usage of gas as an alternative fuel has good prospects for reducing the load on the environment. Achieved results: the developed simulation model can be used to conduct a computer experiment to select the optimal parameters for the operation of an auto service enterprise serving vehicles on both conventional diesel and compressed natural gas.
Accelerated motorization in addition to the increase in population mobility entails negative consequences that have an increasing impact on human health and cause new risks. Toxic substances released during the operation of automobile engines are one of the main causes of urban air pollution. Toxic emissions of vehicles are exhaust gases, crankcase gases and fuel vapors from the fuel tank, with the majority of them being exhaust gases. The composition of engines exhaust gases depends on the group and fractional composition of the fuel used, the nature of the additives contained in the fuel, the type of organization and the perfection of the working process, the operating conditions, the technical condition, etc. The most unfavorable modes of operation are low speeds and “idling” of the engine, when pollutants are released into the atmosphere in quantities far exceeding the emission under load conditions. The technical condition of the engine directly affects the environmental performance of emissions. The exhaust gases of a gasoline engine with improperly adjusted ignition contain carbon monoxide (II) in an amount 2 to 3 times higher than normal.
Poor air quality, climate change, a lack of balance between society and the natural environment are increasingly affecting human health and causing new risks. One of the options for reducing the burden on the environment is the usage of road transport on alternative fuels. Expansion of the fleet due to gas-engine vehicles requires changes in the service system. Improving management through the development and usage of simulation models will make it possible to adjust measures aimed at the realization of strategic goals, at each stage, to choose the most rational option for each combination of the prevailing conditions.
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