Low-pressure EGR confirmed Tier III compliant

21 May 2015
The low-pressure EGR system has been confirmed as Tier III-compliant

The low-pressure EGR system has been confirmed as Tier III-compliant

Mitsubishi Heavy Industries Marine Machinery and Engine Co Ltd (MHI-MME) and Mitsubishi Kakoki Kaisha Ltd has confirmed that its Low Pressure Exhaust Gas Recirculation (EGR) system complies with IMO NOx Tier III regulation following tests.

The Low Pressure EGR system, that recirculates exhaust gas after a turbocharger, is developed under the Class NK’s ‘Joint R&D for Industry Programme’ scheme.

MHI-MME’s Low Pressure EGR system can change combustion condition inside an engine and suppress NOx generation by recirculating a part of low pressure exhaust gas emitted from an engine turbocharger outlet to a turbocharger intake after scrubbed by the EGR scrubber.

Its advantage is that it keeps both initial and running costs lower than a high pressure EGR system which uses high temperature and high pressure exhaust gas.

The company will install the engine on a 34,000 tonne bulk carrier owned by Shikishima Kisen K.K. currently being built at The Hakodate Dock Co., Ltd, and will carry out long-term durability tests during the sea trial and commercial voyages.

In addition, it will confirm and evaluate the availability of caustic soda, sludge disposal handling process, certification process and others in collaboration with NYK Bulk & Projects Carriers Ltd/ Nippon Yusen Kabushiki Kaisha and Shikishima Kisen K K.

MHI-MME says it will also improve the whole system in preparation for future business based on the field service results.

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Mitsubishi Heavy Industries Marine Machinery & Engine Co

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