ppeppt-copy1-180328140952.docx - Diesel Engine Power Plant Mansoor Ali Zaheer Assistant Professor Mechanical Engineering Department The University of

ppeppt-copy1-180328140952.docx - Diesel Engine Power Plant...

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Diesel Engine Power Plant Mansoor Ali Zaheer Assistant Professor Mechanical Engineering Department The University of Lahore
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INTRODUCTION GENERAL LAYOUT EQUIPMENTS APPLICATIONS ADVANTAGES DISADVANTAGES
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The two stroke cycle engine is more favored for diesel power plant. The air required for the diesel engine is drown through the air filter from the atmosphere and compressed inside the cylinder. The fuel from the diesel engine is drawn through a filter from the all day tank and injected into the cylinder through fuel injectors. Because of the high temperature and pressure of the compressed air, the fuel burns and the burnt gases expand to do work on the moving part inside the cylinder called piston.
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This movement of the piston rotates a flywheel and the engine is directly coupled to electric generator. The gases after expansion inside the cylinder is exhausted into the atmosphere and passes through a silencer in order to reduce the noise. Diesel power plants produce power in the range of 2 to 50MW. They are used as standby sets for continuity of supply such as hospitals , telephone exchanges , radio station , cinema theatres and industries (peak load). They are suitable for mobile power generation and widely used in railways and ships.
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GENERA LLAYOUT Day tank Surge ta nk Jacket Starting .... - Heat -+ - -+ exchanger p u mp o il
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• Air intake system • Fuel supply system • Exhaust system • Cooling system • Lubricating system • Starting system
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• The air required for the combustion of fuel inside the diesel engine cylinder is drawn through the air filter. The purpose of the filter is to remove dust from the incoming air. • dry filter- may be made of felt , wood or cloth. • wet filter- oil bath is used.
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Supercharging The purpose of supercharging is to raise the volumetric efficiency above that value which can be obtained by normal aspiration. The engine is an air pump, increasing the air consumption permits greater quantity of fuel to be added, and results in greater potential output.
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Effects of Supercharging The Power output of a supercharged engine is higher than its naturally aspirated counterpart.
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