scholarly journals Determining the amount of harmful emissions of diesel internal combustion engines

Author(s):  
M. Kapitsa ◽  
M. Martyshevsky ◽  
U. Zelenko ◽  
A. Boychenko ◽  
O. Dzhus
Author(s):  
A. A. Kondratiuk ◽  

The paper presents the results of theoretical and experimental studies of the environmental characteristics of internal combustion engines of commercial and municipal vehicles operating on the Diesel cycle using a hydrogen additive. The analysis of literature sources has confirmed that there are different data regarding harmful emissions when using hydrogen additives for internal combustion engines running on the Diesel cycle. Therewith, data on harmful emissions of nitrogen oxides NOx differ significantly. The results of theoretical and experimental studies of the environmental characteristics of internal combustion engines of commercial and municipal vehicles operating on a Diesel cycle using a hydrogen additive, allow to assert the adequacy of the model, since the error between the theoretical and experimental data did not exceed 14,5 %. It has been found out that the concentration of NOx emissions in an internal combustion engine using a hydrogen additive, working on a Diesel cycle, has decreased by 52 %.The research results confirm the prospects of using a hydrogen additive, which is done for the first time for internal combustion engines running on the Diesel cycle in commercial and municipal vehicles. This guarantees increased environmental safety in urban agglomerations.


Author(s):  
L.A. Gubacheva ◽  
◽  
D.Yu. Chizhevskaya ◽  
I.V. Makarova ◽  
A.A. Andreev ◽  
...  

In modern conditions, the problem of waste pollution of the earth bowels, the atmosphere, natural and artificial water areas is especially acute. Domestic wastes are incinerated or taken to a landfill, as a result, there is an environmental damage – the area of alienated land resources increases and the atmosphere is polluted. The negative impact of municipal solid waste (MSW) on the environment, leading to climate change, an increase in the greenhouse effect and an increase in the number of natural hazards, makes it necessary to search for solutions to reduce harmful emissions into the atmosphere, increase the energy efficiency of processes, in particular, in transport systems, due to fuel efficiency using. The most negative impact on the state of the air environment is exerted by emissions in the exhaust gases of internal combustion engines, including those using natural gas, nitrogen monoxides and dioxides as fuel. Reducing harmful emissions is possible, for example, by improving the technology for producing generator gas as an alternative fuel, which makes it possible to reduce the concentration of nitrogen oxides in any devices for burning up solid, liquid and gaseous fuels in internal combustion engines. The article discusses the issues of waste generation and their impact on the environment, the technologies for rational use of natural resources in transport and methods for improving waste processing technologies are presented. A new horizontal design of a combined automobile gas generator has been developed. It makes it possible to transfer the power supply from liquid motor fuel to generator gas produced from woodworking industry waste, agricultural waste, solid household and polyethylene-containing waste. This will reduce pollution of the world’s oceans by slowly decomposing polyethylene, which are now acquiring the character of a disaster on a planetary scale. An increase in the environmental level of gasoline engines and a decrease of the amount of waste during the operation of road transport will be achieved with the modernization of the waste processing plant to obtain energy carriers for transport. In its turn, it will make it possible to form a natural and technical system to ensure environmental safety and protect the natural environment.


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