AUT108 Week 9 Quiz Emissions

Water can be considered a by-product of completely burned hydrogen fuel.

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Catalytic converters come in two types: ________ and ________.

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Oxygen makes up the largest percentage of air in Earth's atmosphere.

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If a vehicle passes a(n) ________ test with clean results, that is a good indication that all of the engine systems and the engine itself are operating well.

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Which of the following ensures that hydrocarbons are not released into the atmosphere when fuel in the fuel tank begins to vaporize and build pressure?

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Exhaust gas recirculation (EGR) systems began to appear on the automobile around _______ and became a mandatory part of emission controls.

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In older vehicles, crankcase vapors were vented directly to the atmosphere through a(n) ________ tube or road-draft tube. Modern vehicles now use a ___________ to recirculate the crankcase vapors back into the intake manifold.

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Replacement of gaskets in the crankcase to fix oil leaks due to pressure build-up will eventually cause _______.

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If a PCV valve is sludged up or sticky, then the PCV valve must be ________.

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Physical damage to a catalytic converter can occur under all of the following conditions EXCEPT:

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