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

DIESEL ENGINE OPERATION IN USE OF FUEL WITH ADDITIVES

2018 ◽  
pp. 18-24
Author(s):  
Petar Kazakov ◽  
Atanas Iliev ◽  
Emil Marinov
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Internal Combustion Engines ◽  
Experimental Studies ◽  
Combustion Engines ◽  
Engine Operation ◽  
Factors Affecting ◽  
Operating Modes ◽  
Positive Effects

Over the decades, more attention has been paid to emissions from the means of transport and the use of different fuels and combustion fuels for the operation of internal combustion engines than on fuel consumption. This, in turn, enables research into products that are said to reduce fuel consumption. The report summarizes four studies of fuel-related innovation products. The studies covered by this report are conducted with diesel fuel and usually contain diesel fuel and three additives for it. Manufacturers of additives are based on already existing studies showing a 10-30% reduction in fuel consumption. Comparative experimental studies related to the use of commercially available diesel fuel with and without the use of additives have been performed in laboratory conditions. The studies were carried out on a stationary diesel engine СМД-17КН equipped with brake КИ1368В. Repeated results were recorded, but they did not confirm the significant positive effect of additives on specific fuel consumption. In some cases, the factors affecting errors in this type of research on the effectiveness of fuel additives for commercial purposes are considered. The reasons for the positive effects of such use of additives in certain engine operating modes are also clarified.

Experimental Research on Magnetic Treatment of Fuel Fluids before Burner for Increasing Thermal Efficiency and Reducing Emissions Resulting from the Burning Process

2015 ◽  
Vol 772 ◽  
pp. 526-530
Author(s):  
Robert Ciobanu ◽  
Maurizio Repetto ◽  
Octavian Donţu ◽  
Daniel Besnea ◽  
Alina Spanu
Keyword(s):  
Experimental Research ◽  
Permanent Magnets ◽  
Magnetic Treatment ◽  
Fuel Quality ◽  
Burning Process ◽  
Paramagnetic Behavior ◽  
Factors Influencing ◽  
Close Proximity ◽  
Innovative System ◽  
Main Factors

Through magnetic treatment of fuel before burner, the main factors influencing the burning process like fuel quality and spray quality undergoes changes, and the burning process is substantially improved. Acting on the fuel fluid with certain successive alternating polarity magnetic waves generated by permanent magnets, which is one of the innovative features of the system proposed in this paper, there is an intensification of the process of changing the stereochemistry of molecules, appearing fractionation, leading to increasing its magnetic moment and to their stronger ionization. These changes result in increased affinity of fuel molecules to other molecules and ions from close proximity, thus implicitly to oxygen molecules who have a strong paramagnetic behavior and the combustion of the fuel will take place in the upper parameters. In this paper is proposed, tested and validated by a series of experimental burning tests an innovative system used for magnetic treatment of combustible fluids before burner.

scholarly journals FEATURES OF THE DIESEL RUNNING BY CAMELINA-MINERAL FUEL IN THE MODE OF INDEPENDENT IDLING

2017 ◽  
Vol 2 (3) ◽  
pp. 15-19
Author(s):  
Александр Уханов ◽  
Aleksandr Ukhanov ◽  
Денис Уханов ◽  
Denis Ukhanov ◽  
Евгений Сидоров ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Filling Ratio ◽  
Engine Operation ◽  
Mixed Fuel ◽  
Camelina Oil ◽  
Excess Air ◽  
Mineral Fuel ◽  
Fresh Charge

The mode of independent idling, characterized by an impaired process flow, unproductive fuel consumption and increased emissions of harmful substances into the atmosphere, is the most unfavorable mode of the diesel engine operation. Therefore, the aim of the research is to reveal the peculiarities of the tractor diesel engine operation by the camelina-mineral fuel in the mode of independent idling. Camelina-mineral fuel is a mixture of camelina oil and mineral diesel fuel in certain ratio of these components. To assess the possibility of using the camelina oil as biological component of diesel mixed fuel, an experimental study of the D-243 diesel engine in idling mode was carried out, and the degree of influence of the different ratio of the components of the mixed fuel on its parameters was determined. The researches were carried out with the diesel fuel on the L-0.2-62 mineral fuel and the camelina-mineral fuel with a ratio of the biological and mineral components: 25% RyzhM + 75% DT; 50% RyzhM + 50% DT; 75% RyzhM + 25% DT; 90% RyzhM + 10% DT and 90% RyzhM + 10% DT (US). For the parameters of the diesel, the excess air factor, the filling ratio of the diesel cylinder with fresh charge, the maximum cycle pressure, the hourly fuel consumption, smoke and carbon monoxide content in the exhaust gases are taken. It is established that when the diesel engine works on camelina-mineral fuel mode the minimum sustainable speed of the crankshaft idle speed 800 min-1 the values of maximum cycle pressure (6.3 MPa) and the filling ratio of the cylinders of a diesel engine the fresh charge (0,87) remain unchanged. The coefficient of excess air, increasing in mixed fuel shares of camelina oil to 90%, reduced from 7.187 to 4.619, while fuel consumption increases of 1.1 kg/h 2 kg/h. The best environmental indicators are observed when working on red-and-mineral fuel 50% RyzhM + 50% DT. Handling mixed fuel with ultrasound reduces fuel consumption, smoke and content of carbon oxide in the exhaust gas relative to the mixed fuel not treated with ultrasound.

Cycle-Controlled Water Injection for Steady-State and Transient Emissions Reduction From a Heavy-Duty Diesel Engine

2008 ◽  
Vol 130 (3) ◽  
Author(s):  
Rudolf H. Stanglmaier ◽  
Philip J. Dingle ◽  
Daniel W. Stewart
Keyword(s):  
Steady State ◽  
Diesel Engine ◽  
Fuel Efficiency ◽  
Water Injection ◽  
Heavy Duty ◽  
Engine Operation ◽  
Southwest Research Institute ◽  
Trade Offs ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

A system for coinjecting mixtures of diesel fuel and water into a heavy-duty diesel engine has been developed and evaluated at the Southwest Research Institute. This system features prototype Lucas electronically controlled injectors, full electronic control, and can vary the percentage of water in the mixture on a cycle-resolved basis. Tests of this system were conducted on a production Volvo D-12 engine, and have produced reduced NOx and smoke emissions over steady-state and transient conditions. Water-diesel coinjection yielded a considerable improvement in NOx-smoke and NOx-BSFC trade-offs under steady-state engine operation. In addition, control of the water percentage on a cycle-resolved basis was shown to be an effective method for mitigating NOx and smoke emissions over step-load transients. Results from this work show that a combination of aggressive EGR and diesel+water coinjection is very promising for producing very low levels of engine-out exhaust emissions, reducing the water storage requirements, and improving fuel efficiency. Further refinement of this injection technology is in progress.

Cycle-Controlled Water Injection for Steady-State and Transient Emissions Reduction From a Heavy-Duty Diesel Engine

2004 ◽  
Author(s):  
Rudolf H. Stanglmaier ◽  
Philip J. Dingle ◽  
Daniel W. Stewart
Keyword(s):  
Steady State ◽  
Diesel Engine ◽  
Fuel Efficiency ◽  
Water Injection ◽  
Heavy Duty ◽  
Engine Operation ◽  
Southwest Research Institute ◽  
Trade Offs ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

A system for co-injecting mixtures of diesel fuel and water into a heavy-duty diesel engine has been developed and evaluated at the Southwest Research Institute. This system features prototype Lucas EUI injectors, full electronic control, and can vary the percentage of water in the mixture on a cycle-resolved basis. Tests of this system were conducted on a production Volvo D-12 engine, and have produced very encouraging results. Water-diesel co-injection yielded a considerable improvement in NOx-smoke and NOx-BSFC trade-offs under steady-state engine operation. In addition, control of the water percentage on a cycle-resolved basis was shown to be an effective method for mitigating NOx and smoke emissions over step-load transients. Results from this work show that a combination of aggressive EGR and diesel+water co-injection is very promising for producing very low levels of engine-out exhaust emissions, reducing the water storage requirements, and improving fuel efficiency. Further refinement of this injection technology is in progress.

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 Performance of a drop-in biofuel emulsion on a single-cylinder research diesel engine

2016 ◽  
Vol 166 (3) ◽  
pp. 9-16
Author(s):  
Maria Bogarra-Macias ◽  
Omid Doustdar ◽  
Mohammed Fayad ◽  
Miroslaw Wyszyński ◽  
Athanasios Tsolakis ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Research Work ◽  
Pyrolysis Product ◽  
High Energy ◽  
Waste To Energy ◽  
Gaseous Emissions ◽  
Pyrolysis Oil ◽  
Engine Operation ◽  
Single Cylinder

Current targets in reducing CO2 and other greenhouse gases as well as fossil fuel depletion have promoted the research for alternatives to petroleum-based fuels. Pyrolysis oil (PO) from biomass and waste oil is seen as a method to reduce life-cycle CO2, broaden the energy mix and increase the use of renewable fuels. The abundancy and low prices of feedstock have attracted the attention of biomass pyrolysis in order to obtain energy-dense products. Research has been carried out in optimising the pyrolysis process, finding efficient ways to convert the waste to energy. However, the pyrolysis products have a high content in water, high viscosity and high corrosiveness which makes them unsuitable for engine combustion. Upgrading processes such as gasification, trans-esterification or hydro-deoxynegation are then needed. These processes are normally costly and require high energy input. Thus, emulsification in fossil fuels or alcohols is being used as an alternative. In this research work, the feasibility of using PO-diesel emulsion in a single-cylinder diesel engine has been investigated. In-cylinder pressure, regulated gaseous emissions, particulate matter, fuel consumption and lubricity analysis reported. The tests were carried out of a stable non-corrosive wood pyrolysis product produced by Future Blends Ltd of Milton Park, Oxfordshire, UK. The product is trademarked by FBL, and is a stabilized fraction of raw pyrolysis oil produced in a process for which the patent is pending. The results show an increase in gaseous emissions, fuel consumption and a reduction in soot. The combustion was delayed with the emulsified fuel and a high variability was observed during engine operation.

DIESEL ENGINE OPERATION IN USE OF FUEL WITH ADDITIVES

2018 ◽  
pp. 18-24
Author(s):  
Petar Kazakov ◽  
Atanas Iliev ◽  
Emil Marinov
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Internal Combustion Engines ◽  
Experimental Studies ◽  
Fuel Additives ◽  
Engine Operation ◽  
Factors Affecting ◽  
Operating Modes ◽  
Positive Effects

Over the decades, more attention has been paid to emissions from the means of transport and the use of different fuels and combustion fuels for the operation of internal combustion engines than on fuel consumption. This, in turn, enables research into products that are said to reduce fuel consumption. The report summarizes four studies of fuel-related innovation products. The studies covered by this report are conducted with diesel fuel and usually contain diesel fuel and three additives for it. Manufacturers of additives are based on already existing studies showing a 10-30% reduction in fuel consumption. Comparative experimental studies related to the use of commercially available diesel fuel with and without the use of additives have been performed in laboratory conditions. The studies were carried out on a stationary diesel engine СМД-17КН equipped with brake КИ1368В. Repeated results were recorded, but they did not confirm the significant positive effect of additives on specific fuel consumption. In some cases, the factors affecting errors in this type of research on the effectiveness of fuel additives for commercial purposes are considered. The reasons for the positive effects of such use of additives in certain engine operating modes are also clarified. Key words: diesel fuel, diesel fuel additives, engine efficiency.

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