Internal Combustion Engines

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• Internal Combustion Engines
• Submitted by
  Enrollment no
• Divyesh Patel
  130680102021
• Bhavik prajapati
  130680102039
• Parth vagashiya
  130680102052
• Guided by
• Mr. Rocky N. Patel
• Submitted To
• SARDAR PATEL INSTITUTE OF TECHNOLOGY
• PILUDARA, MAHESANA
• Academic year 2013-14

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Internal Combustion Engines
types of heat engines
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Internal Combustion Engines
The internal combustion engine is an engine in
which the combustion of fuel-oxidizer mixture
occurs in a confined space
applied in automotive rail transportation power
generation ships aviation garden appliances
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Internal Combustion Engines
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Internal Combustion Engines
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Internal Combustion Engines Carnot cycle -
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Internal Combustion Engines two stroke -
2. Intake / Compression
1. Power / Exhaust

1. ignition
2. piston moves downward compressing fuel-air
   mixture in the crankcase
3. exhaust port opens

1. inlet port opens
2. compressed fuel-air mixture rushes into the
   cylinder
3. piston upward movement provides further
   compression

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Internal Combustion Engines two stroke -

• Advantages
• lack of valves, which simplifies construction and
  lowers weight
• fire once every revolution, which gives a
  significant power boost
• can work in any orientation
• good power to weight ratio

• Drawbacks
• lack of a dedicated lubrication system makes the
  engine to wear faster.
• necessity of oil addition into the fuel
• low efficiency
• produce a lot of pollution

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Internal Combustion Engines four stroke -
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Internal Combustion Engines four stroke -
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Internal Combustion Engines four stroke -

• Advantages
• dedicated lubrication system makes to engine more
  wear resistant
• better efficiency that 2-stroke engine
• no oil in the fuel less pollution

• Drawbacks
• complicated constriction
• should work in horizontal position due to
  lubrication

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Internal Combustion Engines Diesel -
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Internal Combustion Engines Diesel -

• Advantages
• self ignition (without electrical spark plug)
• better efficiency
• reliability
• higher durability
• supplied with worse fuels

• Drawbacks
• more NOx production
• more expensive production
• more weight
• louder
• lower revolutions

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Internal Combustion Engines Diesel -
fuel injector
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Internal Combustion Engines multi-cylinder -
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Internal Combustion Engines multi-cylinder -
Cylinder layouts
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Internal Combustion Engines multi-cylinder -
Cylinder layouts
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Internal Combustion Engines multi-cylinder -
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Internal Combustion Engines multi-cylinder -
14 cylinder Diesel engine (80 MW)
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Internal Combustion Engines multi-cylinder -
Cylinder layouts
radial
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Internal Combustion Engines
Valve operation
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Internal Combustion Engines
Engine characteristic
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Internal Combustion Engines
Engine cooling
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Internal Combustion Engines
Turbocharged engine
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Internal Combustion Engines
Wankel rotary engine

• Drawbacks
• increased wear of rubbing parts
• higher fuel consumption
• requirement for better materials

• Advantages
• higher power output
• no reciprocating mass
• simpler and lighter construction

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Thank You