Mitsui E&S and Everllence Advance Zero-Emission Engine Technology with TCT Turbocharger Production

Japanese engineering conglomerate Mitsui E&S Co., Ltd. Is bolstering its position in the marine engine market through a strengthened partnership with Everllence, focusing on next-generation fuel technologies and turbocharger production. This collaboration is driving innovation in engines compatible with methanol, LNG, ammonia, and hydrogen, aiming for zero net greenhouse gas (GHG) emissions in the maritime industry.

Expanding Production Capabilities and a Legacy of Partnership

Mitsui E&S holds the leading share in Japan for large low-speed two-stroke marine engines. The company has been manufacturing engines under the “MITSUI-Everllence B&W” brand since a technical partnership with Everllence (formerly Burmeister & Wain) began in 1926. In November 2024, cumulative engine production reached 120 million horsepower [Mitsui E&S].

First TCT Turbocharger Produced in Japan

On September 19, 2025, at the MITSUI E&S Co., Ltd. Tamano factory, a ceremony marked the first-ever TCT turbocharger produced under license in Japan – a TCT40 unit [Everllence]. This milestone builds on a licensing agreement between Mitsui E&S and Everllence that began in 1981, resulting in the manufacture and sale of over 4,000 MITSUI-Everllence turbochargers over the past 40 years [Container News].

TCT Turbocharger Technology and Benefits

The TCT40 turbocharger represents a shift from older TCA turbocharger models for two-stroke engines. Mitsui E&S intends to progressively add other sizes within the TCT range to its production line [Everllence]. The TCT40 offers improved maintainability and longer service intervals due to optimized design and material selection of its rotating components [Container News]. When integrated with Mitsui E&S’s e-GICS Advance and CMAXS LC-A monitoring systems, it enables more precise and timely maintenance.

Focus on Alternative Fuels

Mitsui E&S is transitioning its focus from heavy oil engines to dual-fuel engines capable of burning methanol and LNG. The company is also developing ammonia and hydrogen dual-fuel engines, considered ultimate zero-emission fuel solutions [Mitsui E&S]. Key milestones in alternative fuel engine development include:

• 2015: World’s first methanol dual fuel engine
• 2016: First ethane dual fuel engine
• 2022: First LPG dual fuel engine
• 2024: World’s first successful hydrogen combustion operation with a large marine engine
• 2025: World’s first test operation of a large-bore low-speed ammonia dual fuel engine

Commitment to NOx Reduction

Mitsui E&S also provides technologies to comply with nitrogen oxide (NOx) regulations, including Exhaust Gas Recirculation (EGR) systems, which reduce NOx generation by cooling and cleaning exhaust gas before recirculating it [Mitsui E&S].