และ it is revised on the 58th meeting of the Marine Environment Protection Committee (MEPC) in 2008. The regulations
formulate the most stringent NOX legislation, IMO Tier III, and the stringent legislation of fuel sulfur content.
Diesel engine belongs to compression ignition reciprocating internal combustion engine, which decides it can use
the less volatile diesel or poor quality fuel oil as propulsion. Marine diesel engine mainly use heavy fuel oil with highsulfur
as fuel, which leads to its main pollutants are nitrogen oxides(NOX), sulfur oxides(SOX) and particulate
matters(PM) [1-3]. Since the generation mechanism of NOX and PM showed the opposite effect, namely a reduction
in one emission will lead to the other emission increase [4], this creates more difficulty for controlling the emission of
marine diesel engine. Thus, it’s urgent to develop new technologies to limit the exhaust of hazardous gases from the
ships. Herein, we reviewed the development methods of hazardous gas exhausted from marine diesel engines in recent
years, especially reducing NOX and PM.