A Review and Comparison on Recent Optimization Methodologies for Diesel Engines and Diesel Power Generators

Issa, Mohamad; Ibrahim, Hussein; Lepage, Richard; Ilinca, Adrian

doi:10.4236/jpee.2019.76003

Cited by 24 publications

(8 citation statements)

References 39 publications

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“…In this sense, the power supply of the telecommunication system is a significant criterion. In Northern Quebec, the energies widely used [ 53 , 54 ] are propane and diesel generators for electricity and fuel oil for direct heating. However, the energies mentioned above have high and increasing costs such as maintenance and fuel cost, increasing linearly for years, and transportation.…”

Section: Comparison Of the Solutionsmentioning

confidence: 99%

State of the Art of Telecommunication Systems in Isolated and Constrained Areas

Ferrier

Ibrahim

Issa

et al. 2021

Sensors

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Smart objects are deployed globally, contributing to improved communications and the growth of industrial systems’ performances. Unfortunately, isolated territories are generally excluded from this progress. Remote areas in Canada are no exception. Thus, about two hundred thousand people are living in isolated regions in Canadian territory. The development of these communities is slowed down not only by an outdated energy supply, but they are also dependent on telecommunication systems not fully deployed in those regions, thus contributing to the amplification of those populations’ isolation. Furthermore, the magnetic field in some regions of the planet and very often in isolated areas undergoes partial or total absorption, known as white areas, making the propagation of the signal very delicate. As a part of this article, a state of the art of telecommunication solutions available in an isolated environment is applied with a critical analysis based on several criteria. It shows the ability to use an original approach based on a captive balloon. Despite the proposed solution’s feasibility, several challenges need to be addressed before formally adopting it. These challenges include: (i) controlling the height of the balloon; (ii) stabilization of the balloon; and (iii) powering the system. The list of references given at the end of the paper should offer aids for the industry and for researchers working in this field.

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Section: Comparison Of the Solutionsmentioning

confidence: 99%

State of the Art of Telecommunication Systems in Isolated and Constrained Areas

Ferrier

Ibrahim

Issa

et al. 2021

Sensors

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“…По указанным причинам традиционная методика настройки РЧВ не может применяться для ГД судов, динамические режимы которых связаны, прежде всего, с волнением моря. Обзор известных методик настройки РЧВ [4,5,6,7] также подтверждает, что они не обеспечивают оптимизацию работы ГД при волнении моря. В связи с этим определена практическая потребность разработки методики настройки РЧВ ГД, учитывающей особенности работы двигателей при волнении моря.…”

Section: автоматизація суднових технічних засобівunclassified

Optimization of automatic control of the speed of rotation of a marine diesel engine

Горб¹,

Яцык²

2021

ASTF

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Annotation – The well-established method of tuning the speed governors (SG) of diesel engines during their operation under conditions of step disturbances, which are characteristic of diesel-generators, cannot be used for the main marine engines, the dynamic modes of which are associated, first of all, with heavy seas, because disturbances cannot change stepwise both along the channel for setting the rotational speed and along the load channel. In this regard, the practical need for the development of a method for tuning the SG of the main engines, which takes into account the peculiarities of their operation in heavy seas, has been determined. The study simulates the automatic speed control system (ASC) of the main marine engine HYUNDAI – MAN B&W 6G70ME-C9.2 of the large crude carrier "GOLDWAY" with the AutoChief 600 electronic SG. The minimum of instability of the controlled parameter was used as an optimality criterion, i.e. the amplitude of the oscillations of the rotational speed of the diesel engine shaft, with the most probable values of the amplitude and period of oscillations (rolling) of the disturbing effect. The study has established that changing the tuning parameters of the governor may lead to local extrema of the optimality criterion when using an electronic governor in the ACS in the factor space of disturbances on a diesel engine, which are typical for heavy seas. It means that the task, requiring finding local extrema using specialized methods, can be set when using an electronic governor in the ACS. However, a significant decrease in the instability of the rotational speed was achieved by carrying out a simple enumeration of the tuning parameters of the SG. It was also found that with a "heavy" propeller, the rotational speed stability can be increased by decreasing the proportional gain, as well as increasing the integrator time.

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“…Figure 5. Methods of reducing SO x and NO x emissions from marine diesel engines using pre-treatment, internal-treatment and post treatment solutions [14]. Open Journal of Marine Science…”

Section: Marine Diesel Engine Emissions Reduction Solutions Using Prementioning

confidence: 99%

A Review and Economic Analysis of Different Emission Reduction Techniques for Marine Diesel Engines

Issa¹,

Ibrahim²,

Ilinca³

et al. 2019

OJMS

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The maritime industry is currently facing the challenges of adopting new technologies and operational practices with stricter international, national and local rules in order to reduce exhaust gas emissions from ships. The most objective of regulations introduced and presented by the Worldwide Sea Organization such as International Maritime Organization (IMO) and the US Environmental Protection Agency (EPA) is to lessen the commitment shipping makes to worldwide and local discharges. This paper analyzes emissions from marine engines and the process of waste exhaust gas formation and provides a summary of the emission reduction technologies to satisfy MARPOL NO x tier III and EPA tier IV rules. The results showed the possibility of achieving a valuable emission reduction percentage if future diesel engines are equipped with pre-treatment, internal-treatment and/or post-treatment techniques. Economics impact for medium and low speed for category 3 marine diesel engines is also presented.

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A Review and Comparison on Recent Optimization Methodologies for Diesel Engines and Diesel Power Generators

Cited by 24 publications

References 39 publications

State of the Art of Telecommunication Systems in Isolated and Constrained Areas

State of the Art of Telecommunication Systems in Isolated and Constrained Areas

Optimization of automatic control of the speed of rotation of a marine diesel engine

A Review and Economic Analysis of Different Emission Reduction Techniques for Marine Diesel Engines

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