| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.16 |
| Score | 0% | 63% |
The primary purpose of the muffler is to:
quiet exhaust |
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remove harmful gases from the exhaust |
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cool the exhaust |
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reclaim unburned fuel |
The muffler follows the catalytic converter and absorbs sound to help quiet load exhaust. It is followed by the exhaust pipe which is the final exit point for exhaust gas from the vehicle.
The intake ports on the cylinder heads is fed outside air via the:
intake air pump |
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intake control module |
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intake manifold |
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intake pressure regulator |
The intake manifold distributes outside air to the intake ports on the cylinder heads. The intake air filter removes any airborne contaminants before the air enters the engine.
Control arms connect a vehicle's suspension to the frame. The connection to the frame uses:
ball joints |
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knuckles |
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pins |
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bushings |
Control arms (upper and lower) connect a vehicle's suspension to the frame. The connection to the wheels is through ball joints which allow the control arms to turn and move up and down simultaneously. The frame connection uses bushings.
The __________ splits engine power between the front and rear axles of four-wheel drive vehicles.
transfer case |
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transmission linkage |
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master cylinder |
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universal joint |
The transfer case splits engine power between the front and rear axles of four-wheel drive vehicles.
Too much fuel results in a __________ air-fuel mixture that burns quicker and cooler.
light |
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lean |
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rich |
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heavy |
The stoichiometric ratio defines the proper ratio of air to fuel necessary so that an engine burns all fuel with no excess air. For gasoline fuel, the stoichiometric ratio is about 14.7:1 or for every one gram of fuel, 14.7 grams of air are required. Too much air results in a lean air-fuel mixture that burns more slowly and hotter while too much fuel results in a rich mixture that burns quicker and cooler.