Asset Selection & Configuration
Diesel electric trucks and mechanical trucks have key differences than can provide relative benefits in differing mine sites. For example, electric trucks have higher drive train efficiency and can deliver maximum power regales of grade, however they burn fuel on the declines, where mechanical trucks under engine braking, do not. Electric trucks allow for the option of (renewable) overhead power, whereas mechanical trucks do not. Specialised modelling can help make the optimal truck selection. Some truck or dig unit engines provide options for fuel calibration, fuel optimised (higher NOx, HC) or NOx, HC optimised, (lower fuel efficiency – higher CO2 output). Calibration selection should be carefully considered, noting the higher NOx and HC of fuel optimised options. Other options to reduce fuel burn include, for example, battery powered cabin air conditioners, to avoid engine idle.
