In the diesel engine power plant the fuel mixture and air is used as a working medium. During the time of the suction stroke atmospheric air enters the combustion chamber. Diesel power plants produce power in the range of 2 to 50MW.

1. • H. J. THIM TRUST’S
• THEEM COLLEGE OF ENGINEERING
• Department of Electrical Engineering
• 2018-2019
Diesel power plant
Presented by
1. Suraj Biradar (Roll no:- 04)
2. Manish Yadav (Roll no:-22)
3. Viraj Raut (Roll no:-18)

2. 2
• Introduction.
• Layout of diesel power plant.
• Equipments.
• Advantages and Disadvantages.

4.  In the diesel engine power plant the fuel
mixture and air is used as a working medium.
 During the time of the suction stroke
atmospheric air enters the combustion
chamber.
 Diesel power plants produce power in the
range of 2 to 50MW.
 They can be used as peak load plants in
combinations with thermal or hydro-plants.
 Diesel power plants are also popularly used
as standby supply of different industries,
commercial complexes, hospitals, etc.

6. 59%
16%
13%
9%
2%
1%
Coal
Hydro
Other Renevable
Natural gas
Nuclear
Diesel

9.  Fuel Supply System
In fuel supply system there are one storage
tank strainers, fuel transfer pump and all day
fuel tank. Storage tank where oil in stored.
1. Strainer : This oil then pump to dry tank, by
means of transfer pump. During transferring
from main tank to smaller dry tank, the oil
passes through strainer to remove solid
impurities. From dry tank to main tank,
there is another pipe connection. This is
over flow pipe.

10.  Air intake system:-
It’s used to remove the dust particles from
the atmospheric air to supply fresh air to
the engine for combustion, it may be
dry(or oil) bath filter or oil immersed filter,
and it consists of pipes to supply the fresh
air and filters to remove dust particles
from the air.

11.  Exhaust System
The exhaust gas is removed from engine, to
the atmosphere by means of an exhaust
system. A silencer is normally used in this
system to reduce noise level of the engine.

12.  Cooling System
The heat produced due to internal combustion,
drives the engine. But some parts of this heat raise
the temperature of different parts of the engine.
1. High temperature may cause permanent damage
to the machine. Hence, it is essential to maintain
the overall temperature of the engine to a
tolerable level.
2. Cooling system of diesel power
station does exactly so.
The cooling system requires a
water source, water pump and
cooling tower.
3. The pump circulates water through cylinder and
head jacket. The water takes away heat from the
engine and it becomes hot. The hot water is
cooled by cooling towers and is re-circulated for
cooling.

13.  Lubricating System
1. This system minimises the wear of rubbing
surface of the engine. Here lubricating oil is
stored in main lubricating oil tank.
2. This lubricating oil is drawn from the tank by
means of oil pump.
3. Then the oil is passed through the oil filter
for removing impurities. From the filtering
point, this clean lubricating oil is delivered
to the different points of the machine where
lubrication is required the oil cooler is
provided in the system to keep the
temperature of the lubricating oil as low as
possible.

14.  Engine Starting System
1. For starting a diesel engine, initial
rotation of the engine shaft is required.
2. Until the firing start and the unit runs with
its own power. For small DG set, the initial
rotation of the shaft is provided by handles
but for large diesel power station.
3. Compressed air is used for starting.

15.  Capital cost is low.
 The design of the plant is easy and
installation process is also easy.
 It occupies less space.
 They can be opened and stopped very
quickly.
 Requirement of cooling water is less.
 At the time of conservation they convert the
fuel into power.
 Lubrication system is easy.

16.  Operating cost must be high.
 Lubrication cost and maintenance cost is also
high.
 Life span is 25 to 45 years. For every 10 years
the life is decreased by 10 %.
 It released unwanted emissions.