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- ISSN: 2333-2581
- Modern Environmental Science and Engineering
The Leading-edge and Unique Technology, Mitsubishi Low Pressure EGR
Mitsubishi Heavy Industries Marine Machinery & Engine Co., Ltd., Nagasaki city, Nagasaki, Japan
Abstract: To comply with IMO NOx Tier III regulations, Mitsubishi Heavy Industries Marine Machinery & Engine Co., Ltd. has developed a new and unique exhaust emission reduction technology “Low Pressure Exhaust Gas Recirculation (LP-EGR) system”.
We Mitsubishi have applied integrated on-engine LP-EGR system into a commercial engine 6UEC45LSE-Eco-B2. As a result of its shop test, we confirmed its NOx emission amount was complied with IMO Tier III regulations in witness whereof the ClassNK and the increase of fuel oil consumption was less than approximately 1%.
Thereafter, we have installed the system into a 34,000DWT Bulk Carrier and now being conducting a long-term durability confirmation during commercial voyages. The installation of the LP-EGR system adapted IMO NOx Tier III into a vessel is the world’s first effort for marine low speed two-stroke diesel engine. Furthermore, since Mitsubishi LP-EGR system utilizes exhaust gas after turbocharger as the EGR gas, it is easy to install any type of engines. Therefore, LP-EGR is the best solution for IMO NOx Tier III.
Key words: marine diesel engine, LP-EGR, IMO NOx Tier III
