title: Experimental investigation on NOx and green house gas emissions from a marine auxiliary diesel engine using ultralow sulfur light fuel.
abstract: In recent years, marine auxiliary diesel engine has been widely used to produce electricity in the large ocean-going ship. One of the main technical challenges for ocean-going ship is to reduce pollutant emissions from marine auxiliary diesel engine and to meet the criteria of disposal on ships pollutants of IMO (International Maritime Organization). Different technical changes have been introduced in marine auxiliary diesel engine to apply clean fuels to reduce pollutant emissions. The ultralow sulfur light fuel will be applied in diesel engine for emission reductions in China. This study is aimed to investigate the impact of fuel (ultralow sulfur light fuel) on the combustion characteristic, NOx and green house gas emissions in a marine auxiliary diesel engine, under the 50%-90% engine speeds and the 25%-100% engine torques. The experimental results show that, in the marine auxiliary diesel engine, the cylinder pressure and peak heat release rate increase slightly with the increase of engine torques, while the ignition advances and combustion duration become longer. With the increases of the engine speed and torque, the fuel consumption decreases significantly, while the temperature of the exhaust manifold increases. The NOx emissions increase significantly with the increases of the engine speed and torque. The NO emission increases with the increases of the engine speed and torque, while the NO2emission decreases. Meanwhile, the ratio of NO2and NO is about 1:1 when the diesel engine operated in the low speed and load, while the ratio increases significantly with the increases of engine speed and torque, due to the increase of the cylinder temperature in the diffusive combustion mode. Moreover, the CO2emission increases with the increases of engine speed and torque by the use of ultralow sulfur light fuel.
authors.affiliation: Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China. Electronic address: penggeng@shmtu.edu.cn.
authors.forename: Peng
authors.initials: P
authors.lastname: Geng
authors.affiliation: Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China.
authors.forename: Qinming
authors.initials: Q
authors.lastname: Tan
authors.affiliation: Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China.
authors.forename: Chunhui
authors.initials: C
authors.lastname: Zhang
authors.affiliation: Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China.
authors.forename: Lijiang
authors.initials: L
authors.lastname: Wei
authors.affiliation: Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China.
authors.forename: Xianzhong
authors.initials: X
authors.lastname: He
authors.affiliation: Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China.
authors.forename: Erming
authors.initials: E
authors.lastname: Cao
authors.affiliation: Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China.
authors.forename: Kai
authors.initials: K
authors.lastname: Jiang
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D005742:Gasoline / Q000032:analysis*; D000074382:Greenhouse Gases / Q000032:analysis*; D009589:Nitrogen Oxides / Q000032:analysis*; D012767:Ships; D013455:Sulfur / Q000737:chemistry; D001335:Vehicle Emissions / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D005742:Gasoline; D000074382:Greenhouse Gases; D009589:Nitrogen Oxides; D001335:Vehicle Emissions; D013455:Sulfur
keywords: Combustion characteristic; Green house gas emission; Marine auxiliary diesel engine; NOx(NO(2)/NO) emission; Ultralow sulfur light fuel