Everllence Unveils ME-LGIA: Revolutionary Two-Stroke Ammonia Engine for Zero-Carbon Maritime Shipping

Everllence has unveiled its new dual-fuel ME-LGIA (liquid gas injection ammonia) two-stroke engine for the maritime industry. The launch event in Copenhagen drew over 300 industry professionals. The ME-LGIA engine combines the Diesel principle with dual-fuel Liquid Gas Injection technology, drawing on features from the company’s prior methanol and LPG models, while adding ammonia-specific safety enhancements. Engineering adaptations address ammonia’s unique chemical properties, including engineered containment, monitoring sensors, dedicated ventilation systems, and double-walled fuel lines.

Initial deliveries are slated for Q1 2026, with bedding-in in late 2025. Pilot projects include two very large ammonia carriers (VLACs) for Eastern Pacific Shipping, four units for Höegh Autoliner’s vehicle carriers, and testing on a bulk carrier in Japan at the MITSUI E&S testbed. Full sales will launch with bore sizes G50, S50, S60, G60, G70, and G80, with retrofit options to follow.

The engine integrates with digital connectivity for real-time data streaming from onboard sensors to Everllence’s onshore analytics platforms, enabling operational analysis, remote diagnostics, and parameter optimization. This supports more efficient vessel performance and emissions reductions as alternative marine fuels gain traction.

Everllence CEO Dr. Uwe Lauber stated: “As the maritime industry’s leading engine designer, we are uniquely positioned to drive the green transition. Introducing new fuels isn’t just innovation—it’s essential for zero-carbon shipping. Ammonia is a critical part of that equation.”

Ammonia combustion produces no CO₂, low sulfur oxides, and minimal particulates. It boasts higher volumetric energy density than hydrogen, can be stored as a liquid at moderate pressures (easing bunkering infrastructure upgrades), and its combustion velocity suits two-stroke engines in large oceangoing vessels. Established global ammonia supply chains, including electrolytic green ammonia and blue-ammonia facilities, further bolster its viability.

Everllence’s two-stroke business head Bjarne Foldager added: “This ammonia engine is a true technological milestone, the result of over 150 000 collective hours and substantial investment. Since ammonia two-stroke testing began in July 2023, we’ve conducted more than 800 tests—both in Copenhagen and at MITSUI E&S in Japan.“