Friday, June 9, 2023
Maritime Propulsion

May 23, 2023

Mitsubishi Shipbuilding Delivers Ammonia Fuel Supply System for Test Engine

Source: Mitsubishi Shipbuilding

Mitsubishi Shipbuilding has delivered an ammonia fuel supply system designed for large, low-speed two stroke marine engines to Japan Engine Corporation (J-ENG).

J-ENG is currently conducting tests of ammonia fuel under various conditions using a test engine at the MHI Research & Innovation Center in Japan as part of its development project with the New Energy and Industrial Technology Development Organization (NEDO).

The test engine has been fitted with J-ENG’s stratified injection system which aims to ensure that the ammonia burns efficiently to minimize the generation of nitrous oxide (N₂O). The ammonia co-firing ratio can be set to different levels depending on future progress in the development of ammonia fuel infrastructure, ammonia fuel price and trends in environmental regulations.

Testing will be conducted over the coming year. In parallel, J-ENG will design and manufacture a full-scale ammonia fueled demonstration engine. This is scheduled to be completed in September 2025 after about six months of shop operation for verification.