Cummins methanol-ready marine engine gains DNV AIP

Cummins Inc. announced it has received Approval in Principle (AIP) from DNV for its methanol-ready QSK60 IMO II and IMO III engines, available in power ratings from 2,000 to 2,700 hp (1,491 to 2,013 kW). The approval validates Cummins’ retrofittable methanol dual-fuel solution for the global marine market, ensuring compliance with the highest standards of safety and performance, the company stated.

Cummins QSK60 methanol marine engine. (Photo: Cummins)

The QSK60 engine utilizes in-cylinder technology to meet IMO Tier 2/3 platform for future emissions in the U.S. and globally. It incorporates a robust engine block designed for continuous duty operation, the company’s modular common rail fuel system, low-temperature aftercooling and Cummins turbochargers designed for marine applications.

Following extensive field testing, Cummins will launch retrofit kits post-2028 to align with market demand and infrastructure readiness. Designed for diesel-electric systems, the kits can be integrated with battery technology to optimize efficiency and sustainability.

As set out in Cummins’ announcement in November 2023, this project — with its focus on the conversion of existing engine installations — offers a seamless transition between present and future builds of new, cleaner technology ships.

According to Dawn Wehr, Cummins executive director – Strategy, Product Planning & Digital, “Using a retrofittable solution dismisses the need for a major vessel overhaul and creates an immediate positive impact on carbon-emissions reduction. With our continual work on developing solutions for other alcohol fuels, including ethanol, we are committed to providing solutions that work for different operations and fuel infrastructure availabilities to ensure ease of adoption.”

The approval builds on Cummins’ August 2023 announcement permitting the use of renewable diesel, such as hydrotreated vegetable oil (HVO), across its high-horsepower engine range.

“Cummins is committed to delivering innovative power solutions to the marine industry,” said Gbile Adewunmi, vice president of Industrial Markets – Power Systems Business. “Through partnerships with our customers, we can drive solutions that meet application requirements, sustainability targets, as well as bridge the longer-term goal of zero emissions.”