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Exam 1 study guide


Study Guide

  1.  A gasoline engine is an internal combustion engine.
  2. In an internal combustion engine, the gasoline is combined with air and burned inside the engine.
  3. The space above the piston where the combustible mixture burns is called the combustion chamber.
  4. To reduce vibration during operation the crank shaft has counter weights to equal the weight of the connecting rod.
  5. Cooling efficiency of air cooled engines is improved through the use of cooling fins.
  6. Why do aluminum cylinder blocks have steel cylinder sleeves?
    1. Aluminum, being a soft metal, would wear out quickly due to the friction of the piston.
  7. Why is a woodruff key used on a shaft?
    1. This type of key cannot slip out during operation
  8.  Valves are kept in alignment through the use of valve guides.
  9. A gasoline engine is a mechanism that transforms chemical energy to mechanical energy.
  10. The force applied to the piston is a result of the expansion or pressure of heated gases.
  11. Burned gasses are released through an exhaust valve following the power stroke of a piston.
  12. A fresh air/fuel mixture enters the combustion chamber through the intake valve.
  13. Gasoline is a petroleum product that is mainly a mixture of hydrogen and carbon.
  14. To perform useful work, the explosive force caused by burning gas must be contained and controlled.
  15. List four major parts of an internal combustion engine.
    1. Crankshaft, piston, connecting rod, crank case, exhaust valve, intake valve, valve spring, spark plug, coil, spark plug wire, cylinder head, cylinder head gasket, cylinder block etc.
  16. The crankshaft is a major rotating part of the engine.
  17. The piston is the straight line driving member of the engine.
  18. The piston is hollow to reduce weight.
  19. What is the purpose of the cam shaft?
    1. To open and close the valves.
  20. What are some functions that a flywheel can provide?
  • Carries the momentum or inertia through the non-power strokes
  • The fins are used to cool the engine much like a fan
  • The magnets are used to produce an electrical current or spark
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  • Home
    • House wiring
    • Small Gas Engines II
    • Small Gas Engines >
      • Purchase Order
      • Engine spec
      • Final project
    • Auto Tech I >
      • Diagnostics
  • Standards
  • Survey online
  • GMAW in espanol
  • Diagnostic survey
  • Career Survey