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Motors

Motors. Steam engine Explosion engine Electric motor Motors of the future. Steam Engine. History Major role during industrial revolution, in mills and factories Created by James Watt. Steam Engine. Operation Water’s states change Steam expansion. Steam Engine. Real efficiency:

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Motors

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  1. Motors Steam engine Explosion engine Electric motor Motors of the future Motors

  2. Steam Engine • History • Major role during industrial revolution, in mills and factories • Created by James Watt Motors

  3. Steam Engine • Operation Water’s states change Steam expansion Motors

  4. Steam Engine • Real efficiency: At most : 40% • Other using Nuclear power plants Gives work to rotate an alternator • Nature friendly water cycle Motors

  5. Explosion engine • History • Created by François Isaac de Rivaz in 1804 • The contemporary car motor Motors

  6. Explosion engine • What is an explosion engine ? • Combustion chamber • Piston • Crankshaft • Rod Motors

  7. Explosion engine • Beau de Rochas cycle: 4 stroke engine • Isobar inlet 2. Adiabat compression Deflagration : isochoric 3. Adiabat expansion 4. Isochoric opening, then isobar exhaust Motors

  8. Explosion engine • Efficiency Depends on chamber’s compression rate. If 10: Motors

  9. Explosion engine • Practice motor problems: • Heat loss: non-adiabatic walls • Non-instantaneous ignition • Delay of combustion • Exhaust and admission disturbed by the inertia of gases • True efficiency is decreased Motors

  10. Explosion engine • Advantages: • Portability of liquid fuel • Powerfull • Disadvantages: • Pollutant fuel • Poor efficiency Motors

  11. Electric motor • History • Conceived by Michael Faraday in 1821 • Able to be miniaturized • Functions without air Motors

  12. Electric motor • Works on Laplace phenomenon Motors

  13. Electric motor • Efficiency Theoric : 100 % But there are many losses • Losses Joule effect Foucault currents Hysteresis => True efficiency: 93% Motors

  14. Other engines • Hydrogen (water) motor • Nature firendly • Renewable energy • Powerfull • Conditioning with sponge processus • Explosive Motors

  15. Other engines • Air motor • Uses air expansion • Totaly clean • Air compression before carrying • Hybrid motor • Couple explosion – electric • Reduces nocives emissions • Explosion engine’s power Motors

  16. Motors Thank you Motors

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