Practicum Module Main Engine Diesel
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Practicum Module Main Engine (DIESEL)
Diesel engine is an internal combustion aircraft, an engine, in which the fuel is ignited by high temperature gases which are compressed in the combustion chamber, resulting in combustion in the combustion chamber. Diesel engine are often used for main propulsion on a ship, which has a large engine capacity and large power. This is because diesel engines are suitable for long distance use or are more heat resistant than other types of engines. The capacity of the diesel engine is very large, and so does the power. The construction of the diesel engine is also on average with a large capacity. Diesel engines can be used with a variety of fuels, both Marine Diesel Oil (MDO) and Marine Fuel Oil (MFO) There are two classes of diesel engines, namely 2-stroke and 4-stroke diesel engines. Usually, the number of cylinders is in multiples of two, although any number of cylinders can be used during the cranking process that can be balanced to prevent excessive vibration. Diesel engines work with fairly high compressed air, so that larger diesel engines need to add more air. Thus, supercharge or turbocharge on the intake manifold is used to meet the needs of compressed air. For a 2-stroke diesel engine, an auxiliary blower is used since a 2-stroke diesel engine has a low speed (80 to 200 rpm), while a 4-stroke engine does not require an auxiliary blower since the engine speed is already high (400 to 1500 rpm). Operating large diesel engine requires support systems and auxiliary machineries, for example cooling system, lubrication system, running air system, fuel system, exhaust system/exhaust gas. Meanwhile, the auxiliary machineries include seawater pumps, freshwater pumps, lubrication pumps, fuel pumps, heaters, compressors and air bottles, auxiliary blowers, turbo chargers, and others. Operations can use simulators as a real picture later, but it can also use real labs such as engine halls and training ships as learning tools.
Practicum Module Construction and Working Principles of Auxiliary Machinery 3rd Semester
This practicum module book on construction and working principles of auxiliary machinery is compiled for the use of education and training in the maritime sector. Students of maritime university are expected to be the main targets to assist the daily teaching and learning process in the course of construction and working principles of auxiliary machinery. In compiling this module book, it is sourced from reading books and the authors' experiences while working on board as well as teaching in ship machinery laboratory. This module book discusses the definition, parts, working principles and operating steps of machinery on board. Before having the practicum on auxiliary machinery, students should understand the definition of machinery. Their understanding of the parts of machinery is also crucial to be able to operate a machine, and do not forget that the working principles are the guide in operating the machinery. This module book discusses about the machinery commonly present on a merchant ship, namely: Boiler, Diesel Engine Generator, Pump, Fresh Water Generator, Steering Gear, Air Compressor, Refrigerator, Purifier, Sewage Treatment, Oil Water Separator, Incinerator, Windlass, Capstan, Crane.
Practicum Module Main Engine (Steam & Gas Turbine)
Steam Turbine and Gas Turbine are machineries used to drive a gear reduction which is connected to a generator and propeller shaft. The steam produced by the boiler/steam boiler (in a closed vessel) is either a water pipe or a fire pipe. Steam pressurized is high enough, flows through a nozzle, which is directed to the turbine blades, so that it rotates into another form of energy to produce powers. Boilers are designed to transfer heat from a combustion source, which is usually fuel combustion. A boiler is a connected vessel in which water is filled and heated, so that water boils and evaporates continuously into steam. Steam generated from the boiler is used to rotate the steam turbine blades and rotate the shaft/axle, which is connected to the electric generator drive, the propeller shaft rotates, compressor driver, cargo pump on tankers, Mooring Winch and Winch-lass movers, and others. As for the gas turbine, the combustion medium in the combustion chamber is gas. With a very high pressure, it will rotate a low-pressure turbine, in which its rotation can be adjusted with a reduction gear and rotational speed regulator control which is often used for propulsion in aircraft and high-speed ships. The operation of the Steam Turbine and Gas Turbine must comply with the operating standards that have been determined by regulations or safety laws. Therefore, the user of the steam turbine and gas turbine will have to meet the standard of the manufacturer who already has a production permit. The standards made will ensure safety in operation, thereby increasing the efficiency of the steam turbine while reducing the operating costs.