Yanmar Reveals Plans for 4-stroke Hydrogen Engine
Yanmar Group has recently revealed plans for a high-speed 4-stroke combustion engine using hydrogen fuel.
January 22, 2024
Above: Rendering of hydrogen fuel engine electric propulsion ship. Image courtesy of Yanmar.
Yanmar Group recently joined a national program by the Nippon Foundation for a zero-emission ship demonstrator, revealing plans for a high-speed 4-stroke combustion engine using hydrogen fuel. Concurrently, Yanmar Power Technology is developing hybrid electric ships, utilizing hydrogen fuel generators and batteries in collaboration with the Uyeno Group's containerized unit on the deck of a coaster.
Established in Osaka, Japan, in 1912, Yanmar achieved a significant milestone in 1933 by pioneering the development of a practical-sized compact diesel engine—the first of its kind. Renowned for its groundbreaking contributions to diesel engine technology, Yanmar has evolved into a global innovator across various industrial domains.
The project, involving six partners, envisions onshore trials by 2024, pilot tests in 2026, and the introduction of hydrogen-powered coasters by 2030, targeting small merchant ships for coastal navigation. While the current focus is on large commercial vessels, the potential impact extends to recreational boats and yachts through existing partnerships with brands like Nautique, Beneteau, Bertram, and others.
Collaborating with Uyeno TransTech Co., Ltd., a shipping company in the Uyeno Group, the vessel integrates a container unit-type hydrogen power generation system on its upper deck. In a commitment to zero-emission maritime practices, YPT aims to develop a pilot ignition engine utilizing a blend of pilot biofuel and hydrogen co-combustion.
Above: Yanmar 6-stroke hydrogen engine. Image courtesy of Yanmar.
The ultimate goal is to achieve zero emissions for coastal vessels around 2030, fostering the widespread adoption of hydrogen-based propulsion systems. This initiative not only explores new fuels but also hints at potential applications for lower-power engines and even leisure boating if dockside supply infrastructures evolve to meet demand.
The shift toward hydrogen power in marine applications is gaining momentum, with Yanmar emphasizing the environmental benefits – zero CO2 or greenhouse gas emissions, only water or water vapor. Progress is evident in hydrogen-powered outboards and the world's first hydrogen-powered RIB tested in August 2023.
