Ammonia solution
Ammonia engines for Zero-Emission shipping
Ammonia is emerging as a key fuel in the transition to zero-emission shipping, offering a carbon-free pathway for marine propulsion.
We help shipowners and operators evaluate, integrate, and prepare for ammonia propulsion, based on engine solutions developed by HiMSEN.
HiMSEN ammonia engine tested and validated for marine application
Hyundai Himsen has successfully completed the Type Approval Tests (TAT) for its two dual-fuel ammonia engines, finalized across 2024 and 2025. These tests confirm the engines’ compliance with stringent performance, safety, and emission standards required for marine applications.
The Type Approval Test was wittnesed by leading classification societies, including ABS, Bureau Veritas, DNV, Korean Register, Lloyd’s Register, Nippon Kaiji Kyokai, and RINA, ensuring global acceptance and readiness for commercial deployment.
| Item | Diesel Cycle | Otto Cycle |
|---|---|---|
| Concept | High pressure & liquid injection | Low pressure & vapor injection |
| Output De-rating | None | Un-avoidable |
| Efficiency | High | Low |
| N2O emission | Low | High |
| NH3 emission | Low | High (Blow-by, Slip) |
| NOx emission | Relatively high (handled by SCR) | Relatively low |
Diesel Cycle improves combustion reliability
Diesel cycle is adopted for HiMSEN ammonia engine to ensure high efficiency and low emission
HiMSEN Dual Fuel Ammonia Engine
| H32CDF-LA | |
|---|---|
| Combustion | Diesel cycle |
| Bore | 320 mm |
| Stroke | 450 mm |
| Speed | 720 rpm |
| Cyl. config. | 6, 7, 8, 9 (inline) |
| Cyl. output | 600 kW |
| Eng. output | 3.6 - 5.4 MW |
| H22CDF-LA | |
|---|---|
| Combustion | Diesel cycle |
| Bore | 220 mm |
| Stroke | 330 mm |
| Speed | 900 rpm |
| Cyl. config. | 6, 7, 8, 9 (inline) |
| Cyl. output | 240 kW |
| Eng. output | 1.4 - 2.2 MW |
From Insight to Implementation
We support your journey toward ammonia-powered operations with practical guidance and trusted solutions.
