Auto 10 - Otto Engine Operation

  • SAE J1349
  • ASTM D975
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| By Ginmonk
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Quizzes Created: 4 | Total Attempts: 563
| Attempts: 91 | Questions: 10
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1. Maximum fuel economy, low emissions levels and best driveability requires what?

Explanation

All the right conditions are the best way to have good things happen......

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About This Quiz
Auto 10 - Otto Engine Operation - Quiz

Explore the fundamentals of Otto engine operation in the 'Auto 10' quiz. Assess your knowledge on engine classifications, timing belts, variable valve timing, engine block materials, and signs of engine issues. Essential for automotive enthusiasts and engineering students.

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2. Two drawbacks of aluminum engine blocks are….?

Explanation

Aluminum is more prone to warping if it gets too hot (compared to cast iron) and it is more expensive, too. But it is much lighter, which offsets those drawbacks.

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3. Blue exhaust smoke is a sign of what?

Explanation

Something would be VERY, VERY wrong with an engine that gets brake fluid or ATF into it's combustion chambers. Coolant typically makes a white steamy smoke, and oil makes a grey-blue oily smoke.....

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4. How often do timing belts need to be replaced?

Explanation

Timing belts are durable, but bad things can happen if they fail, so changing them every few (5) years is recommended.

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5. What are the two main features used in classifying automotive gasoline engines?

Explanation

As is V8, or Slant-6.....

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6. The two main causes of low compression are….

Explanation

Low compression means gasses can't be compressed in the cylinder. Valve and compression rings are made to keep gasses in the cylinder.

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7. What are the first things to investigate regarding an engine oil leak?

Explanation

When looking for an il leak, it is best to start at the top of the engine, hence valve covers and head gasket.....

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8. Why is variable valve timing beneficial to engine performance?

Explanation

Engines require large amounts of air to function, as they run faster, adjusting the valves to allow more air in at higher engine speeds just makes sense.

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9. When compression testing an engine, the lowest cylinder should be no less than….

Explanation

much less than 75% is a sign that cylinders are wearing unevenly.....

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10. Deep metallic knocking can be a sign of what engine problems?

Explanation

Valve lifters make more of a ticking sound, and broken timing belt will make no sound. Low oil pressure means oil isn't getting up into the engine to protect metal on metal friction.

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Maximum fuel economy, low emissions levels and best driveability...
Two drawbacks of aluminum engine blocks are….?
Blue exhaust smoke is a sign of what?
How often do timing belts need to be replaced?
What are the two main features used in classifying automotive gasoline...
The two main causes of low compression are….
What are the first things to investigate regarding an engine oil leak?
Why is variable valve timing beneficial to engine performance?
When compression testing an engine, the lowest cylinder should be no...
Deep metallic knocking can be a sign of what engine problems?
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