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Engines and Motors

Engines and Motors. Part - 1. Types. Internal Combustion Engines External Combustion Engines Electric Motors / Hybrids. Internal Combustion.

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Engines and Motors

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  1. Engines and Motors Part - 1

  2. Types • Internal Combustion Engines • External Combustion Engines • Electric Motors / Hybrids

  3. Internal Combustion • An internal combustion engine is an engine in which the combustion of a fuel (ie. Gasoline, Diesel, Propane, etc.) occurs with an oxidizer (air) in a combustion chamber. Cont.

  4. Internal Combustion • In this engine Chemical Energy is converted to Mechanical Energy by the force of the rapidly expanding gases pushing on the piston.

  5. Internal Combustion Engines • 4-Stroke Gas • 4-Stroke Diesel • 2-Stroke Gas • 2-Stroke Diesel • Gas Turbine

  6. 4-Stroke Gas Engines • Nikolaus Otto invented it in 1867 • Four Strokes are: • Intake • Compression • Power • Exhaust

  7. 4-Stroke Gas Engines - Intake

  8. 4-Stroke Gas Engines - Compression

  9. 4-Stroke Gas Engines - Power

  10. 4-Stroke Gas Engines - Exhaust

  11. 4-Stroke Gas Engines • Pros • Easy to Refuel • Light Weight • Inexpensive • Cons • Only 30% Effcient

  12. 4-Stroke Diesel Engines • Rudolf Diesel – 1892 • Diesel Engines Use Compression Ignition

  13. 4-Stroke Diesel Engines • Compression Ignition • Super heated gasses ignite fuel • No Spark Plugs • Super High Compression Ratio Comp. Ratio Cont.

  14. 4-Stroke Diesel Engines • Compression Ratio – V @ BDC : V @ TDC

  15. 4-Stroke Diesel Engines • Diesel in action • More Action

  16. 2-Stroke Gas Engines • Small, light weight, simple engine • Used in: • Dirt Bikes, Lawn Mowers, Snowmobiles, Jet Skis, chainsaws, Etc. • Picture

  17. 2-Stroke Gas Engines Advantages: Disadvantages • Less Moving Parts • Light Weight • Twice as Powerful • Operating Position • Frequent Rebuilds • Pollution • Burns Oil

  18. 2-Stroke Diesel Engines • These engines were introduced in the 1930s and power a large number of the diesel locomotives found in the United States. • Currently, 2-stroke Diesels power “super” cargo ships

  19. 2-Stroke Diesel Engines • Typical engines have 6 to 14 cylinders (for a total displacement on the order of 1,556,002 cubic inches!). • A typical horsepower rating for one of these engines is 43,000 to 109,000HP!

  20. 2-Stroke Diesel Engines • 2-Stroke Diesel Engine • Most powerful engine in the world

  21. Rotory Engine • Dr. Felix Wankel • AKA, the Wankel or Wankel Rotory • Rotary in motion

  22. The End

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