Marine Diesel Engine Performance Quiz
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Questions and Answers

What do indicator diagrams in a marine diesel engine represent?

  • Temperature variations within the engine cylinder
  • Fuel injection timing during the combustion process
  • Exhaust gas recirculation rates
  • Pressures and volumes within the engine cylinder during the operating cycle (correct)

    • What does the peak pressure in a marine diesel engine correspond to?

  • Pressure at the end of the exhaust stroke
  • Pressure at the beginning of the compression stroke
  • Average pressure throughout the operating cycle
  • Maximum pressure reached during the power or combustion stroke (correct)

    • How is the variation of pressure within the cylinder throughout the engine's operating cycle often represented?

  • In a torque-efficiency diagram
  • In a speed-fuel diagram
  • Known as pressure-volume (PV) diagram (correct)
  • In a temperature-volume diagram

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