Through our advanced design and development capabilities, we provide engineering services that meet the needs of partner shipyards.
The MHI Group provides energy-saving and environmentally conscious products developed in-house as packages.
MHI was the first to develop this system in Japan. Adopting a mechanism to boost LNG (liquefied natural gas) pressure by pumping to 30MPa (approximately 300 atmospheres), we achieved a compact structure and low power consumption in developing MHI-GEMS. By incorporating a hydraulic power unit to its pump driving system, the need for reducers was eliminated, facilitating speed shift as well as flexibility in placement. We succeeded in commercializing MHI-GEMS by leveraging our broad expertise and extensive research findings, in technologies for marine engines, shipbuilding engineering, seals for general machinery, as well as harnessing the cryogenic technology developed in building LNG-fueled vessels. MHI-GEMS helps achieve a reduction in environmental load, as LNG engines emit less CO2 compared to the use of conventional heavy oil fuel.
Since sulfur is a component of the heavy oil used as fuel for ships, sulfur oxides (SOx) are emitted in the exhaust gas. As a major contributor to air pollution and acid rain, SOx emissions are regulated by the International Maritime Organization (IMO). For ship operators, however, switching to low-sulfur fuel is a huge burden owing to the high price of the fuel. In this context, the MHI Group supplies exhaust gas cleaning systems, which have been approved by the IMO, as an alternative measure to switching to low-sulfur fuel. This system makes it possible to comply with SOx emission regulations while continuing to use conventional heavy oil as fuel.
In response to growing demand for protecting and improving the ocean environment, the MHI Group has developed a concept for adopting LNG as fuel for ships as a means to reduce their environmental load.
In the future, as stricter environmental regulations are introduced, the potential for fuel markets to convert from oil to the more environmentally friendly LNG will significantly increase.