Komatsu launches hydrogen dump truck for the mining industry

Komatsu Ltd., led by president and CEO Hiroyuki Ogawa, has developed a concept version of its HD785 large dump truck, which boasts a maximum payload of approximately 92 metric tonnes, now equipped with a hydrogen combustion engine

The company has begun proof-of-concept testing at its Ibaraki Plant in Hitachinaka City, Ibaraki Prefecture. This initiative marks the world’s first instance of integrating a hydrogen combustion engine into a large dump truck.

Through these trials, Komatsu seeks to deepen its understanding of hydrogen engine applications, paving the way for the advancement of hydrogen-powered construction and mining machinery.

Innovating with hydrogen technology

As part of its commitment to achieving carbon neutrality, Komatsu continues to explore and develop alternative power sources.

In its pursuit of hydrogen engine technology, the company has leveraged the expertise of KEYOU GmbH, a German startup specialising in hydrogen engine solutions for heavy-duty trucks.

The concept machine integrates a hydrogen combustion engine and hydrogen tank system co-developed by Komatsu and KEYOU. To optimise hydrogen storage, the tank is mounted on a platform beside the operator’s cab.

Additionally, newly installed cameras and monitors both inside and outside the cab enhance visibility for the operator.

The proof-of-concept tests will assess key factors such as driving performance, operational duration, fuel efficiency, and safety measures associated with high-pressure hydrogen gas.

Advantages of hydrogen combustion engines

Compared to battery and hydrogen fuel cell alternatives, hydrogen combustion engines present a cost-effective solution for construction and mining equipment.

This is largely due to the ability to retain powertrain components from conventional diesel-powered machines, reducing the need for extensive modifications.

Moreover, with nearly zero CO_₂ emissions, some mining operators have shown interest in adopting hydrogen engines as part of their carbon neutrality efforts.

Challenges remain, particularly in hydrogen supply infrastructure and safety management. Komatsu plans to collaborate with industry groups and key stakeholders to address these issues and support the wider adoption of hydrogen technology.

Commitment to carbon neutrality

Under its mid-term management plan, Komatsu aims to cut CO_₂ emissions by 50% in both product use and production operations by 2030 (relative to 2010 levels), with the ultimate goal of achieving carbon neutrality by 2050.

The company has already introduced hydraulic excavators, tethered electric hydraulic excavators, and battery-powered excavators across various sizes.

Additionally, Komatsu is actively developing eco-friendly technologies, including carbon-neutral fuel solutions, battery-powered equipment power supply systems, hydrogen fuel cell-powered excavator trials, and a power-agnostic truck concept.

Komatsu remains dedicated to meeting diverse environmental demands through in-house research, open innovation, and strategic partnerships, reinforcing its commitment to a sustainable future.

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