Mitsubishi Heavy Industries Marine Machinery & Equipment Co (MHI-MME) is delivering MET turbochargers for Winterthur Gas & Diesel Ltd’s (WinGD) two-stroke dual-fuel engine model 12X92DF
Being built by Chinese state-owned engine manufacturer CSSC-MES, the engines are being touted as the world’s largest two-stroke dual-fuel X-DF engine. Nine of the engines are scheduled to be mounted onto nine 23,000-TEU container vessels under construction at a CSSC shipyard.
MET turbochargers have already been mounted on WinGD’s X-DF engines.
Combining the turbocharger with the engine achieves a uniform, lean mix of gas and air for combustion, and the system’s capability to utilise exhaust gas allows for cleaner emissions and greater efficiency.
The system helps vessels to comply with IMO’s NOx and SOx emissions regulations while also reducing CO2 emissions, as compared with diesel fuel, with a dual-fuel setup.
NOx Tier III standards, which require an 80% reduction in NOx emissions from Tier I standard, have been in effect since 2016 and are enforceable in emission control areas (ECAs). In the near future, the areas covered under these standards are set to expand.
MHI-MME claims combining MET turbochargers with X-DF engines will help shipowners meet the new standards when the IMO sulphur cap comes into force in January 2020.
In 2018, the company began developing new models of small, lightweight and high-efficiency turbochargers with the aim of completing the first such turbocharger in 2020.
Going forward, MHI-MME says it will continue to keep in step with other engine designers and boost the capability of MET turbochargers to meet environmental regulations.
The MET-MBII turbocharger series can be installed on WinGD diesel engines and the former MET-MB series.