Electronic Unit Injector Systems Quiz
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Questions and Answers

What is the purpose of an Electronic Unit Injector (EUI)?

  • To control the engine's exhaust emissions
  • To regulate the engine's air intake
  • To meter, pressurize, and inject fuel directly into the combustion chamber (correct)
  • To monitor the engine's oil pressure
  • What are the advantages provided by Electronic Unit Injectors (EUIs)?

  • Improved exhaust system performance
  • Reduced friction in the engine's moving parts
  • Higher injection and spray-in pressure (correct)
  • Increased engine cooling efficiency
  • How are unit injectors positioned in the engine?

  • Mounted on the engine block
  • Distributed along the length of the engine
  • Directly and centrally located in the cylinder head above each combustion chamber (correct)
  • Attached to the exhaust system
  • What drives the unit injector in an Electronic Unit Injector (EUI) system?

    <p>The engine camshaft with a wider and dedicated injector lobe</p> Signup and view all the answers

    How are Electronic Unit Injectors (EUIs) actuated in overhead cam engines?

    <p>A rocker lever is used to directly actuate the EUI to pressurize fuel</p> Signup and view all the answers

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