Authors: G.M. Dubov, S.A. Nokhrin, S.A. Khodorovsky, P.A. Strelnikov, A.V. Chernichenko

Title of the article: Study of the limit of average operational diesel fuel replacement with gas to assess the possible prospects for the use of LNG as motor fuel for BelAZ dump trucks

Year: 2023, Issue: 3, Pages: 59-66

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

Index UDK: 622.23.05

DOI: 10.26730/1816-4528-2023-3-59-66

Abstract: The issue of urgency and viability of the use of alternative motor fuel - liquefied natural gas (LNG) on dump trucks allowing the increase in environmental and economic efficiency of rock mass haulage is considered. It is said that one of the promising directions of decreasing harmful emissions together with providing economic efficiency is the equipment of standard heavy-duty dump trucks with cryogenic onboard fuel systems. To conduct research, a system for remote collection and transmission of data on the time of operation of a dump truck in five different loading intervals during one working shift was installed on board the BelAZ-75131 mining dump truck. The data were statistically processed, and a calculation was made on that basis. Processing of research results showed that the dump truck worked most of the time at a load of less than 10%. The dump truck worked for the least time at a load of 35% to 60%. The highest consumption of diesel fuel was at a load of more than 60% and above. The lowest consumption of diesel fuel was at a load of 10% to 35%. The possible average operating limit for replacing diesel fuel with liquefied natural gas (LNG) for a certain period of time is determined based on the obtained and processed statistical data taking into account various load intervals. The results of studies of average statistical distribution of dump truck operation time and diesel fuel consumption depending on its load are obtained. Taking into account the difference in the cost of gas and diesel fuel, the economic potential of gas-diesel (dual-fuel) dump truck operation is determined.

Key words: BelAZ gas-diesel operation diesel fuel liquefied natural gas environmental and economic efficiency

Receiving date: 18.05.2023

Approval date: 15.06.2023

Publication date: 11.07.2023

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