| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.34 |
| Score | 0% | 67% |
Gases from combustion are pushed out through the exhaust valve as the piston travels up the cylinder to top dead center. This describes which engine stroke?
intake |
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exhaust |
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compression |
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power |
During the exhaust stroke, just before the piston reaches bottom dead center the exhaust valve opens. The resulting gases from combustion are then pushed out through the exhaust valve as the piston travels up the cylinder to top dead center, completing stroke four of the four-stroke piston cycle.
Which of the following statements about v-type cyllinder arrangement is false?
common in motorcycles, cars, and trucks |
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engine is shorter than an inline engine |
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has two rows of cylinders |
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has an odd number of cylinders |
A v-arrangement has two rows of cylinders in a V-shaped block with a crankshaft at the bottom of the V. Any even number of cylinders is possible in this configuration from the V-2 that's commonly used in motorcycles up to V-12 or bigger for large trucks. The V design produces a shorter engine than an in-line cylinder configuration and allows for better air-fuel distribution.
For inline cylinder arrangements in an engine, how are the cylinders numbered?
alternating from the front of the engine to the back |
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alternating from the back of the engine to the front |
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sequentially from the back of the engine to the front |
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sequentially from the front of the engine to the back |
Inline cylinder arrangements number cylinders sequentially (1, 2, 3, ...) front to rear.
The fluid reservoir stores the __________ that the master cylinder uses to maintain hydraulic pressure.
air |
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ethylene glycol |
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brake oil |
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brake fluid |
The fluid reservoir stores the brake fluid that the master cylinder uses to maintain hydraulic pressure.
Both intake and exhaust valves are closed as the piston begins moving back up from the bottom of the cylinder, compressing the air-fuel mixture in the combustion chamber which also makes it hotter. This describes which engine stroke?
exhaust |
|
intake |
|
power |
|
compression |
During the compression stroke, both intake and exhaust valves are closed as the piston begins moving back up from the bottom of the cylinder (bottom dead center or BDC). This compresses the air-fuel mixture in the combustion chamber which also makes it hotter.