The Diesel Cycle

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The Diesel Cycle

• By Marcus Low

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What is the difference?

• The Diesel engine takes in JUST air.
• The compression ratio is higher, thus higher
  efficiency.
• Diesel engines use direct fuel injection.
• No spark plug required.

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Advantages Disadvantages

• Advantages
• There is no KNOCKING in the diesel engine.
• Higher efficiency.
• Less expensive
• Disadvantages
• Pollution
• Heavy
• Initial high cost

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Examples of vehicles that use diesel engines

• Cars
• Trucks
• Submarine
• Locomotives

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Objective

• Definition of Diesel Cycle
• How the Diesel Cycle Works
• Examples of Diesel Engines
• Relevance of Diesel Engines Today

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History Definition

• 1892, Rudolf Diesel invented the Diesel Engine.
• Main goal- High Efficiency
• Definition- combustion process of a type of
  internal combustion engine in which the burning
  of fuel is triggered by heat generated in
  compressing fuel-air mixture

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Internal View of Diesel Engine
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Diesel Cycle Diagram
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How it Works

• Comprises of 4 Stages
• Intake Inlet valve opens, exhaust closed.
• Compression Both valves closed. Piston
  compresses air upwards. Fuel injected.
• Power Fuel ignites. Gas forces piston downwards.
• Exhaust Inlet valve closed. Exhaust valve opens.
  Piston travels upward.

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References

• http//auto.howstuffworks.com/diesel1.htm
• http//en.wikipedia.org/wiki/Diesel_cycle
• http//hyperphysics.phy-astr.gsu.edu/hbase/thermo/
  diesel.html