Mitsubishi Heavy Industries Technical Review
    Vol. 50 No. 1 (2013)   New Products & Technologies
    Technical Papers

    World's Largest Marine 2-Stroke Diesel Test Engine, the 4UE-X3 - Development in Compliance with the Next Version of Environmental Regulations and Gas Engine Technology -

    Masahiko Okabe,
    Katsuhiko Sakaguchi,
    Masahide Sugihara,
    Akihiro Miyanagi,
    Naohiro Hiraoka,
    Satoru Murata

    Mitsubishi Heavy Industries, Ltd. (MHI) has brought to completion the 4UE‐X3, one of the world's largest test engines that has four cylinders with a bore diameter of 60 cm, based on the latest UE diesel engine. Using this test engine to assure verification of the performance and reliability of the latest technologies and to enable technological development in response to environmental regulations that will be restricted further in the future and current market trends heading toward the diversification of fuel (toward gaseous fuel in particular), MHI will be able to promptly offer products that meet the needs of customers. Recently a test of EGR (Exhaust Gas Recirculation), one of the technologies for compliance with environmental regulations, was performed and favorable data was obtained. This document describes a general outline of the test engine and also presents the trends of technological development.