The document discusses the components of diesel engine power plants. It describes the various systems that are part of diesel engines like the air intake system, fuel system, injection system, lubrication system and cooling system. It explains the working of key components such as the fuel pump, injector and nozzle. The summary provides an overview of the layout and major components of diesel engine power plants.

1. III Year- V Semester
CME834- Power Plant Engineering
Unit II- DIESEL, GAS TURBINE AND COMBINED CYCLE
POWER PLANTS
MECHANICAL ENGINEERING
Prepared by
Eanest Jebasingh B M.E., (Ph.D.)
AP/Mech, MZCET
Mount Zion College of Engineering and
Technology, Pudukkottai
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2. 8/19/2023 EANEST/MECH/V/CME834/PPE/II 2
Course Objective
• To study the coal based thermal power plants.
• To study the diesel, gas turbine and combined cycle
power plants.
• To learn the basic of nuclear engineering and power plants.
• To learn the power from renewable energy.
• To study energy, economic and environmental issues of
power plants.

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Course Outcome
Upon the completion of this course the students will be able to
• CO1 Explain the layout, construction and working of the components inside
a thermal power plant.
• CO2 Explain the layout, construction and working of the components
inside a Diesel, Gas and Combined cycle power plants.
• CO3 Explain the layout, construction and working of the components inside
nuclear power plants.
• CO4 Explain the layout, construction and working of the components inside
Renewable energy power plants.
• CO5 Explain the applications of power plants while extend their knowledge
to power plant economics and environmental hazards and estimate the costs
of electrical energy production.
• CO6 Identify safety aspects of power plant.

4. POWER PLANT ENGINEERING
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UNIT - II
TLP.NO TOPICS
2.1 OTTO,DIESEL,DUAL AND BRAYTON CYCLE -
ANALYSIS AND OPTMISATION
2.2 COMPONENTS OF DIESELAND GAS TURBINE
POWER PLANTS
2.3 COMBINED CYCLE POWER PLANTS
2.4 INTEGRATED GASIFIER BASED COMBINED
CYCLE SYSTEM
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5. Previous Class: Today’s Class:
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1. – Otto, diesel, dual and brayton
cycle - analysis and optmisation
• Otto cycle.
• Diesel Cycle.
• Brayton Cycle.
2.2 – Components of diesel and gas
turbine power plants
• Diesel Engine Power Plant.
• Component of diesel engine
power plant.
POWER PLANT ENGINEERING
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6. Diesel Engine PowerPlant
• Chemical Energy – Heat Energy – Mechanical Energy – Electrical Energy.
• Diesel power plant ranges from 2MW to 50MW capacity. It is used as Peak load
plant, Mobile plant, Standby plant, Emergency plant, Nursery stations and
central stations.
2.2
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7. Types of Diesel EnginePower Plants
Four stroke engine
Two stroke engine
Verticalengine
Horizontalengine
Single cylinder engine
Multi cylinder engine
2.2
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8. Diesel Engine PowerPlant
2.2
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9. Diesel Engine PowerPlant
2.2
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10. Layout of diesel engine powerplant
2.2
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11. Components of DieselEngine Power Plant
• Heat engine
• Air intake system
• Engine starting system
• Fuel system
• Fuel injection system
• Lubrication system
• Cooling system
• Exhaust system
2.2
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12. Heat Engine
Any type of engine or machine
which derives heat energy
from the combustion of fuel or
any other sources and converts
this into mechanical work.
2.2
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13. Air intake system
Air intake system conveys fresh air through
louvers, pipes or ducts to the air inlet of engine cylinder.
Air filters removes the dust from the atmospheric air.
Muffler is used to reduce the noise in the intake system.
2.2
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14. Engine starting system
The system includes air compressor and starting
air tank, which is used to start engine in cold conditions
by supplying air.
Various methods for starting engines:
Starting by an auxiliary engine
Use of electric motors or self-starters
Compressed air system
2.2
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15. Fuelsystem
2.2
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16. Fuel InjectionSystem
Filter the fuel.
Meter the correct quantity of fuel to be injected.
Time the fuel injection.
Control the rate of fuel injection.
Atomize the fuel to fine particles.
Properly distribute the fuel in the combustion chamber.
2.2
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17. Common Rail Injection system
2.2
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18. Individual PumpInjection system
2.2
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19. Distributor system
2.2
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20. 2.2
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21. Fuel Pump
2.2
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22. Fuel Injector
2.2
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23. Types of nozzle
2.2
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40. Summary
• Studied about the component of diesel engine power plant.
2.2
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41. Reference
• Nag. P.K., "Power Plant Engineering", Third Edition, Tata
McGraw – Hill Publishing Company Ltd., 2008.
2.2
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