Four-Stroke Compression Ignition Cycle
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Questions and Answers

What occurs during the power stroke of a compression ignition engine?

  • The burning gases expand and force the piston downwards (correct)
  • The inlet valve opens just before reaching top dead centre
  • The remaining exhaust gases are forced out through the open exhaust valve
  • The exhaust valve opens to allow the gases to escape

    • What is a common problem for two-stroke cycle compression ignition engines?

  • Lack of fuel injection
  • Overheating of the exhaust system
  • Excess combustion air
  • Inadequate combustion air (correct)

    • How is the issue of inadequate combustion air addressed in two-stroke compression ignition engines?

  • By increasing the compression ratio
  • By adding more fuel injectors
  • By installing a larger exhaust system
  • By using superchargers and turbochargers for forced induction (correct)

    • What is a key difference between two-stroke compression ignition engines and two-stroke spark ignition engines?

    <p>Two-stroke compression ignition engines lack an induction stroke</p> Signup and view all the answers

    What happens just before the piston reaches the top dead centre position in a compression ignition engine?

    <p>The inlet valve opens</p> Signup and view all the answers

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