Authors: D.S. Trukhmanov, G.M. Dubov, A.A. Chegoshev, I.E. Eltsov, S.A. Nokhrin

Title of the article: Technique for evaluating cost-performance ratio of on-board cryogenic fuel systems of lng-fuelled belaz mining dump trucks

Year: 2021, Issue: 3, Pages: 32-38

Branch of knowledge: 05.05.06 Mining machines

Index UDK: 622.23.05

DOI: 10.26730/1816-4528-2021-3-32-38

Abstract: The issue of the advantages of using liquefied natural gas (LNG) as a motor fuel for mining dump trucks instead of diesel fuel (DF) is considered. It is noted that the power consumption of the process of rock mass hauling by dual-fuel (gas-diesel) BelAZ mining dump trucks is less than that of the process of rock mass hauling by mining dump trucks running on diesel only. It is argued that the conversion of diesel engines of mining dump trucks to gas-diesel operation is very promising from the point of view of environmental and economic performance of heavy-duty mining equipment. A comprehensive universal technique for evaluating the cost-performance ratio of on-board cryogenic fuel systems (OBCFS), which are currently used on mining dump trucks, is presented. The method for evaluating the parameter "ratio of diesel fuel replacement with LNG" during the operation of BelAZ 75131 mining dump trucks equipped with OBCFS is described in detail. A possible sequence of cyclic, one-shift and daily monitoring of the parameter "ratio of diesel fuel replacement with LNG" is presented. The method for evaluating the economic efficiency of the use of heavy-duty mining dump trucks conversed to gas-diesel operation is given, which allows, among other things, determining the actual service life of OBCFSs installed on BelAZ mining dump trucks and their time to failure.

Key words: BelAZ mining dump truck liquefied natural gas cryogenic on-board fuel system dual-fuel (gas-diesel) operation

Receiving date: 31.05.2021

Publication date: 13.07.2021

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