Marine Use Dual Fuel Engine Corresponding to IMO Marine Emission Regulation

Abstract

Following France, the UK also announced the ban on selling internal combustion engine cars from 2040. Germany and other European countries also show a posture following this, and the wave of global environmental regulations is getting more and more stringent. This wave is not limited to automobiles, and a similar regulation strengthening has been indicated for internal combustion engines for ships on the high seas. With regard to NOx, the regulation to discharge less than about 20% of current condition on some designated emission control area (here after ECA), and the ECA will be further expanded in the future. As for SOx, it was decided last year that the sulfur content in the fuel will be 0.5% or less after 2020. (0.1% or less in ECA). Diesel engines that used heavy fuel oil have been used for internal combustion engines for marine vessels. In response to such environmental regulations, the development of dual fuel engines with liquefied natural gas and heavy oil has been developed in recent years. Here we describe the mechanism and environmental performance of the marine dual fuel engines and the actual fact of conversion work to a DF engine of a diesel engine for onshore power generation.