HD Hyundai Heavy Industries’ HiMSEN engine has demonstrated its eco-friendly engine technology by obtaining classification approval for the ammonia dual-fuel H32CDF-LA model.
The engine was developed based on high-pressure direct-injection ammonia technology, completed in 2024, built on the platform of the H32C diesel engine. While the existing H22CDF-LA ammonia engine could support outputs up to 2.2 MW, this new model extends that capability up to 5.4 MW, allowing for a broader range of power requirements. By independently developing the core technology for high-pressure direct injection combustion and filing domestic and international patents for the fuel boosting device (e-HBU, electro-Hydraulic Boosting Unit), It has been successfully integrated into the engine, thereby achieving high engine efficiency and emission performance. Furthermore, by applying various proven safety design concepts—based on experience in manufacturing DF engines for a wide range of fuels, including ammonia—It has been secured for sufficient safety validation from classification societies.
Through this classification approval, HD Hyundai Heavy Industries expands its line-up of ammonia dual-fuel engines, a carbon-free fuel solution, positioning itself to meet the decarbonisation demands of the global shipping industry and contribute to building a sustainable marine environment. Based on this approval, HD Hyundai Heavy Industries plans to proactively respond to the eco-friendly ship market by leading alternative fuel engine technologies—including ammonia and methanol—and expanding into the electric propulsion engine sector.
The classification approval test was conducted at HD Hyundai Heavy Industries’ Engine Technology Centre, with representatives from seven major classification societies—KR (Korea), ABS (USA), BV (France), DNV (Norway), NK (Japan), LR (UK), and RINA (Italy)—in attendance.
Image: Type Approval for the HiMSEN H32CDF-LA ammonia engine (source: HD Hyundai)
