scholarly journals Support System Using Oral Communication and Simulator For Marine Engine Operation.

2001 ◽  
Vol 36 (6) ◽  
pp. 408-416
Author(s):  
Kuniyuki Matsushita ◽  
Kazuhiko Nagao ◽  
Kazuaki Yano
Keyword(s):  
Support System ◽  
Oral Communication ◽  
Engine Operation ◽  
Marine Engine

The impact of marine engine operation and maintenance on emissions

2012 ◽  
Vol 17 (1) ◽  
pp. 54-60 ◽  
Author(s):  
Vanessa Duran ◽  
Zigor Uriondo ◽  
Juan Moreno-Gutiérrez
Keyword(s):  
Engine Operation ◽  
Marine Engine ◽  
Operation And Maintenance ◽  
The Impact

Review on Combustion Control of Marine Engine by Fuzzy Logic Control Concerning the Air to Fuel Ratio

2014 ◽  
Vol 66 (2) ◽  
Author(s):  
Mohammad Javad Nekooei ◽  
Jaswar Jaswar ◽  
A. Priyanto
Keyword(s):  
Control Point ◽  
Nonlinear Behavior ◽  
Spark Ignition ◽  
Point Of View ◽  
Engine Operation ◽  
Marine Engine ◽  
Loop Control ◽  
Fuel Ratio ◽  
Highly Nonlinear ◽  
Close Loop Control

This research reviews a close loop control-oriented model, combined with air to fuel ratio, to regulate  combustion phasing in a spark- ignition marine engine operation. On the other hand ,Stoichiometric air-to-fuel ratio () control plays a significant role on the  three way catalysts in the reduction of exhaust pollutants of the SI marine engine. Air to fuel management for SI marine engines is a major challenge from the control point of view because of the highly nonlinear behavior of this system. For this reason, linear control techniques are unable to provide the required performance, and nonlinear controllers are used instead. Therefore, a fuzzy MIMO Control system is designed for robust control of  lambda. As an accurate and control oriented model, an  air to fuel ratio model of a Spark Ignition (SI) marine engine is developed to generate simulation data of the engine's subsystems. The Goal of this control is to maintain the A/F ratio at stoichiometry.

scholarly journals An Experimental Study of Emission and Combustion Characteristics of Marine Diesel Engine in Case of Cylinder Valves Leakage

2015 ◽  
Vol 22 (3) ◽  
pp. 90-98 ◽  
Author(s):  
Jerzy Kowalski
Keyword(s):  
Diesel Engine ◽  
Laboratory Tests ◽  
Technical Condition ◽  
Exhaust Gas ◽  
Gas Temperature ◽  
Engine Operation ◽  
Marine Engine ◽  
Study Results ◽  
Air Intake ◽  
Exhaust Gas Temperature

Abstract Presented paper shows the results of the laboratory tests on the relationship between throttling of both air intake duct and exhaust gas duct and a gaseous emission from the marine engine. The object of research is a laboratory, four-stroke, DI diesel engine, operated at loads from 50 kW to 250 kW at a constant speed equal to 750 rpm. During the laboratory tests over 50 parameters of the engine were measured with its technical condition recognized as a „working properly” and with simulated leakage of both air intake valve and exhaust gas valve on the second cylinder. The results of this laboratory research confirm that the leakage of cylinder valves causes no significant changes of the thermodynamic parameters of the engine. Simulated leakages through the inlet and exhaust valve caused a significant increase in fuel consumption of the engine. Valve leakages cause an increase of the exhaust gas temperature behind the cylinder with leakage and behind other cylinders. The exhaust gas temperature increase is relatively small and clearly visible only at low loads of the engine. The increase of the temperature and pressure of the charging air behind the intercooler were observed too. Charging air temperature is significantly higher during the engine operation with inlet valve leakage. The study results show significant increases of the CO, NOx and CO2 emission for all the mentioned malfunctions. The conclusion is that the results of measurements of the composition of the exhaust gas may contain valuable diagnostic information about the technical condition of the air intake duct and the exhaust gas duct of the marine engine.

scholarly journals Studying influence of fuel magnetic treatment on marine engine operation

2020 ◽  
Vol 2020 (4) ◽  
pp. 61-68
Author(s):  
Nadezhda Anatolievna Pivovarova ◽  
Alexander Fedorovich Dorokhov ◽  
Vasily Vladimirovich Shakhov ◽  
Galina Vladimirovna Vlasova ◽  
Yuliya Shirbalaevna Bayramova
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Permanent Magnets ◽  
Treatment Effectiveness ◽  
Fuel Efficiency ◽  
Magnetic Treatment ◽  
Fuel Quality ◽  
Marine Fuel ◽  
Engine Operation ◽  
Marine Engine

The article considers the influence of the fuel magnetic treatment onto the operation of a ship engine. Many shipowners are interested in reducing their fuel consumption. Fuel efficiency is one of the most important indicators of a ship's engine. There are various methods to improve the fuel quality. In addition to traditional physical and chemical methods, wave effects are also used, for example, a magnetic treatment. The magnetic treatment effectiveness for diesel fuels has been confirmed by many studies. The analysis of the influence of the magnetic treatment of diesel fuel with a magnetic induction of 0.4 T on the operation of a 4CHN9.5/11 marine engine under different modes is carried out. Magnetic treatment of the fuel was carried out by creating a magnetic field with permanent magnets NdFeb (neodymium - iron - boron) installed in special magnetizers on the fuel line to the high-pressure fuel pump.The methods of analysis of changes in external indicators of the 4CHN9.5/11 engine during magnetic treatment of fuel are considered. The pictures of the 4CHN9.5/11 engine tested are presented. The results of the parameters of the 4CHN9.5/11 diesel engine (effective power, speed, average effective pressure, hourly fuel consumption, specific effective fuel consumption) during tests on load and screw characteristics before or after installation of the magnetizer are presented. The bench tests have confirmed that the reduction in fuel consumption when testing a diesel engine running on magnetically treated fuel makes 5-8%. It is noted that with other types of marine fuel and on other models of engines it is possible to clarify the methods of using magnetic processing in sea and river transport

scholarly journals Development of YANMAR Marine Engine Support System

2010 ◽  
Vol 45 (4) ◽  
pp. 525-529
Author(s):  
Nobuhisa Tomita
Keyword(s):  
Support System ◽  
Marine Engine
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