The future of decarbonization for cars used in quarries

Abstract

Increasing the depth of mining in quarries makes it necessary to find ways to reduce emissions of harmful substances from road transport, which is the main one in deep quarries. Based on the study of changes in fuel consumption during the transportation of rocks by quarry dump trucks and trolley assist with a lifting capacity of 90, 130 and 220 tons, we can find that regularities of changes in linear fuel consumption from the duration of movement with cargo by quarry dump, що trucks with electromechanical transmission are established. The average calculated linear fuel consumption for dump trucks with a load capacity of 90 tons is 10-12 L/km, 130 tons – 16-18 L/km, 220 tons – 24-26 L/km. Lower values correspond to longer routes due to a lower share of fuel consumption during unproductive operations of the transport cycle. A parabolic dependence of the specific fuel consumption of a trolley assist on the length of the route and a linear dependence of the specific fuel consumption of a trolley assist on the trolleybus section of the route has been proven. It is established that the absolute length of the route does not significantly affect the specific fuel consumption; thus, the trolley section in the total length of the route has a more significant impact. With an increase in the trolley part of the track from 30 to 70%, the value of relative fuel consumption decreases from 0.76 to 0.41 on the longest track. To reduce emissions of harmful substances into the atmosphere when implementing trolley assistance, it is necessary to have routes of maximum length with the maximum length of the trolley section, this can lead to a reduction of 2.5 times.

Keywords: quarry dump truck, trolley assist, fuel consumption, harmful substance emissions, decarbonization.