Database and Knowledge about Essential Manufacturers of Marine Self-Ignition Engines

Abstract

During scientificstudies on reciprocating self-ignition marine engines, varying data are often needed. Such data are often in various collections and obtaining some of these is very difficult. Therefore, as it was elaborated in the electronic database about the important marine reciprocating combustion engine producers for the needs of operating scientific investigations aiming at gathering the essential information and technical data in one set. This article also presents a reference to existing databases. Important and globally known companies, as well as their constant and variable data, were described. These data were obtained from various printed and virtual sources of information. These data were selected and compiled in the environment of the Microsoft Access computer program. The collected information was divided between main propulsion and auxiliary engines, containing data about manufacturers, types, and technical parameters of slow, medium, or high-speed combustion engines. This database is constantly updated and rebuilt according to the constructions and changes on the engine production market as the result of economic and ecological functions. It is a relative type database, which contains information about technical data of combustion engines. Marine combustion engines are usually operated for dozens of years after they have been produced, whereas producers merge, change their names, or stop existing. Therefore, a digital-knowledge-management platform was developed in the virtual space in which information on scientific and technical resources was integrated of competing manufacturers with the option of introducing updates.

Diagnosing Cracks in the Injector Nozzles of Marine Internal Combustion Engines during Operation Using Vibration Symptoms

“…Therefore, an attempt was made to diagnose marine diesel engines using vibration signals in various directions and simultaneously measuring the pressure signals in the combustion chamber and vibrations [31]. The architecture of a computer measurement system that provides support for sensors in terms of the power supply, signal loading, the preprocessing of the measured analog signals, synchronous or asynchronous analog-to-digital processing, analysis of selected signals and their archiving, and the transfer of signals to the database and knowledge base was presented in previous studies [9,32]. The measurement system consisted of vibration accelerometers and preamplifiers from Brüel and Kjaer, a photo-optical crankshaft position sensor, a terminal block, and a portable computer (Figure 2).…”

Fault Tree Analysis and Failure Diagnosis of Marine Diesel Engine Turbocharger System

“…Leading manufacturers of turbochargers in the shipping industry are MAN Diesel & Turbo, ABB Turbocharging and Mitsubishi [17]. One of the new MAN TCR turbocharger models is shown in Figure 1.…”

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“…[1][2][3][4][5][6]. Among those substances, NOx and SOx are currently receiving special attention due to the increasingly strict limitations imposed by the IMO (International Maritime Organization) and other organisms [7][8][9][10][11][12][13][14][15][16]. In recent years, the need to reduce NOx emissions led to several measures.…”