| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.29 |
| Score | 0% | 66% |
What provides the power necessary to start a car?
battery |
|
alternator |
|
spark plugs |
|
powertrain control module |
The battery supplies the power necessary to start the engine when the ignition switch is is turned on.
The intake ports on the cylinder heads is fed outside air via the:
intake air pump |
|
intake manifold |
|
intake pressure regulator |
|
intake control module |
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.
The fuel injectors are fed fuel by the:
fuel pressure regulator |
|
powertrain control module |
|
fuel return line |
|
electric fuel pump |
The electric fuel pump feeds pressurized fuel through a fuel filter to the fuel injectors via the fuel rail manifold. The fuel rail contains the fuel pressure regulator which ensures that the fuel injectors receive fuel at a consistent and known rate. Excess fuel bled off by the pressure regulator returns to the fuel tank through the fuel return line.
Opposed cylinder designs feature two rows of cylinders that are placed at what angle to each other?
45° |
|
90° |
|
270° |
|
180° |
Opposed cylinder designs place cylinders flat in two rows 180° opposite each other with a single crankshaft running between them.
Which of the following is a common firing order for four-cylinder engines?
3-1-2-4 |
|
1-2-3-4 |
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1-3-4-2 |
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4-3-2-1 |
The stroke cycle of an engine is governed by the crankshaft which serves to regulate the firing order of the cylinders. All cylinders are not on the same stroke at the same time and correct firing order is important to balance engine operation and minimize vibrations. A common firing order for four-cylinder engines is 1-3-4-2 which indicates that cylinders 1 and 3 fire (power stroke)together and cylinders 4 and 2 fire together.