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Problem statement: Bulldozers consume a large amount of diesel fuel and&#13; consequently produce a significant quantity of CO2. Environmental and economic cost issues&#13; related to fuel consumption and CO2 emission represent a substantial challenge to the mining&#13; industry. Approach: Impact of engine load conditions on fuel consumption and the subsequent CO2&#13; emission and cost was analyzed for Caterpillar bulldozers. Results were compared with the data on&#13; bulldozers' fuel consumption from an operating coal surface mine in the United States. Results: There&#13; is a strong linear correlation among power, fuel consumption and engine load factor. Reduction in load&#13; factor by 15% may significantly reduce the fuel consumption and the CO2&#13; emission.&#13; Conclusion/Recommendation: Application of appropriate bulldozer's load factor may help mine&#13; operators manage fuel consumption, cost and environmental burden

Impact of Bulldozer's Engine Load Factor on Fuel Consumption, CO<sub>2</sub> Emission and Cost