Authors: U.E. Kayumov, R.U. Djuraev, Sh.S. Pardaeva

Title of the article: Reduction of harmful emissions from internal combustion engines of mining machinery using a combined exhaust gas treatment system

Year: 2026, Issue: 4, Pages: 73-84

Branch of knowledge: 2.8.8. Geotechnology, Mining machines (engineering)

Index UDK: 621.43:504.3

DOI: 10.26730/1816-4528-2026-4-73-84

Abstract: The increasing volumes of mineral extraction are accompanied by the growth of mining machinery, leading to a significant rise in pollutant emissions into the atmosphere. In deep open-pit mines with limited air circulation, this results in the accumulation of toxic components in exhaust gases, deterioration of the environmental situation, and increased health risks for personnel. Therefore, reducing harmful emissions from internal combustion engines (ICEs) remains a pressing scientific and technical challenge. This study focuses on the analysis of exhaust gas composition from diesel engines of mining machinery, the mechanisms of toxic component formation, and the evaluation of the effectiveness of modern exhaust gas treatment methods. Special attention is paid to the formation of carbon oxides, nitrogen oxides, hydrocarbons, and particulate matter under various engine operating modes. The results show that the main factors increasing exhaust toxicity are incomplete fuel combustion, uneven air–fuel mixture formation, and the presence of wall quenching zones. Conventional catalytic converters are shown to be effective mainly for gaseous pollutants but have limited capability in capturing solid particles. The study substantiates the feasibility of using a combined exhaust treatment system, including a catalytic converter and an electrostatic filter. It was found that the electrostatic filter can capture 90–99% of fine particulate matter without significantly increasing backpressure. The proposed solution ensures comprehensive reduction of exhaust gas toxicity and improves the environmental performance of mining machinery.

Key words: internal combustion engine exhaust system fuel exhaust gases toxicity soot electrostatic filter catalytic converter environmental impact

Receiving date: 29.03.2026

Approval date: 01.09.2026

Publication date: 27.08.2026

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