Australia's first low-emission ultra-class mining truck

Komatsu has commissioned the first Tier 4 Final version of its 930E-5 ultra-class mining truck in Australia, as part of its commitment to designing and manufacturing mining equipment that advances its corporate social responsibility aims while embracing UN Sustainable Development Goals.

This latest factory-designed emission control technology solution, which meets the most stringent North American and EU emissions regulations, has been adopted by Komatsu Australia to meet a client's specific operational needs.

"Komatsu has a strong commitment to environmental best practice, with a continuous focus on reducing our environmental impacts and our carbon footprint," said Jason Arthur, Komatsu's National Product Manager - Mining.

"Our ongoing research and development efforts include developing new products that significantly reduce fuel consumption as well as greenhouse gas emissions," he said.

Komatsu's Tier 4 Final compliant 930E-5 incorporates on-board after-treatment system that significantly reduces the Scope 1 emissions produced during the haulage process at mines.

"To achieve this, Komatsu worked with our large horsepower engine partner Cummins to provide a simple, low maintenance solution to meet Tier 4 Final emissions requirements," Arthur said.

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The Cummins-sourced engine treats particulate matter in the engine cylinders through an advanced high-pressure fuel injection control system to reduce PM 2.5 by 80 per cent (compared with Tier 2 engine levels).

In turn, the nitrogen oxide (NOx) greenhouse gas emissions are treated out of cylinder through a selective catalytic reduction (SCR) after-treatment process.

In addition to meeting the technology challenges in developing a Tier 4 Final compliant version of the 930E-5, the customer also requested Komatsu provide a truck with significantly lower noise emission levels.

"Our U.S.-based Komatsu Engineering team became intimately involved and created a factory-engineered sound suppression solution that would meet our customer's requirements," Arthur said.

"These factory-designed sound treatments more than halved the standard truck's emitted sound power levels, resulting in a target sound power level of less than 113dBA.

"Successfully achieving these sound levels was a very challenging undertaking for a large mining truck powered by an engine with an output of 2700hp (2014kW)," Arthur said.