INFLUENCE OF THE MARINE 4-STROKE DIESEL ENGINE MALFUNCTIONS ON THE NITRIC OXIDES EMISSION

The article presents the results of the laboratory study on nitric oxides (NOx) emission level from marine fourstroke diesel engine. The object of the study was laboratory piston engine, operating at constant speed. Measured engine parameters were necessary to determine the NOx emission in accordance of the requirements of the Annex VI to MARPOL 73/78 Convention. The study consisted of tests during the engine operation without malfunctions and engine operation with simulated malfunctions. Malfunctions of the charge gas exchange in the form of throttling of the air intake duct and the throttling of the exhaust gas duct were taken into account in the simulations. Measurements during the engine operation with simulated malfunctions of the fuel pump on one of the cylinders were also carried out. Mentioned malfunctions were delay of the fuel injection by 5° of the crankshaft angle position and the leakage of the fuel pump of the second engine cylinder. The simulated malfunctions decrease the total weighted NOx emission in all considered the engine loads. All simulated malfunctions resulted in an increase of the NOx emissions during engine operation at low the engine loads and a decrease of the mentioned emission at maximum the engine loads operation. The calculations of the weighted specific fuel consumption present a little change in engine efficiency which are within the range of measuring error of the used method.

[1]  John B. Heywood,et al.  Internal combustion engine fundamentals , 1988 .

[2]  Ron Zevenhoven,et al.  Large-scale diesel engine emission control parameters , 2010 .

[3]  D. Cooper,et al.  Exhaust emissions from ships at berth , 2003 .

[4]  William A. Welch,et al.  Emission measurements from a crude oil tanker at sea. , 2008, Environmental science & technology.

[5]  David R. Cocker,et al.  In-use gaseous and particulate matter emissions from a modern ocean going container vessel , 2008 .

[6]  F Fleischer,et al.  Physical properties, chemical composition, and cloud forming potential of particulate emissions from a marine diesel engine at various load conditions. , 2010, Environmental science & technology.

[7]  H. W..  The Internal Combustion Engine , 1923, Nature.

[8]  Jill Carlton,et al.  Marine Propellers and Propulsion , 2007 .

[9]  Lars Reichelt,et al.  Experimental and numerical investigation of droplet evaporation under diesel engine conditions , 2009 .

[10]  Adam Charchalis.  DIAGNOSTIC AND MEASUREMENT SYSTEM DEDICATED FOR MARINE ENGINES' EXPLOITATORY ATTRIBUTES EVALUATION , 2015 .

[11]  Carl-Johan Fogelholm,et al.  Emissions from large-scale medium-speed diesel engines: 2. Influence of fuel type and operating mode , 2008 .

[12]  M Lindgren,et al.  Effects of Transient Conditions on Exhaust Emissions from two Non-road Diesel Engines , 2004 .

[13]  Arto Sarvi,et al.  Emissions from large-scale medium-speed diesel engines: 1. Influence of engine operation mode and turbocharger , 2008 .