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J-ENG COMPLETES FIRST LOW-PRESSURE EGR SYSTEM

Thursday, October 8, 2020 

Japan Engine Corporation (J-Eng), the joint company between Mitsubishi and Kobe Diesel, has completed shop testing of the first 6UEC50LSH-Eco-C2-EGR two-stroke engine equipped with a low-pressure exhaust gas recirculation (EGR) system.

The engine is to be installed in a wood chip carrier built by Onomichi Dockyard and owned by Tokai Shipping.

The EGR technology has been developed to meet IMO NOx Tier III regulations through slow combustion with reduced oxygen concentration by mixing re-circulated exhaust gas into the intake fresh air. J-Eng’s EGR system is categorized as 'Low-pressure EGR' through which low-pressure exhaust gas extracted after the turbocharger’s turbine is re-circulated. Utilising the exhaust gas after the turbocharger enables flexible engine operation and makes it easier to switch engine operation modes between with or without EGR system when sailing in and out of ECAs. The company says this simple switch contributes to stable operation of the vessel.

According to J-Eng, this 6UEC50LSH-Eco-C2-EGR engine, which has now completed its shop test and overhaul inspection, provides the latest EGR system with a compactness and simplicity established through past technology and knowhow. All recirculation lines, re-circulated from turbocharger outlet, are built-in on the engine, to enable simpler installation in the engine room. The low-pressure EGR system is being developed for other UEC engine models and production is expanding.

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