| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.20 |
| Score | 0% | 64% |
The fuel injector is regulated by the __________ which is the main computer that controls engine and transmission functions.
transmission control module |
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vehicle control module |
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computer control module |
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powertrain control module |
The fuel injector sprays fuel into the air stream that's being fed into the cylinder head via the intake valve. The timing and amount of fuel are regulated by the powertrain control module (PCM) which is the main computer that controls engine and transmission functions.
What links each piston to the engine's crankshaft?
piston ring |
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halfshaft |
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cylinder arm |
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connecting rod |
A connecting rod employs a wrist pin to link each piston to the engine's crankshaft.
Which of the following statements about fuel injection is false?
atomizes fuel using high pressure and injects it into the engine |
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optimizes fuel delivery using various electronic engine sensors |
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has replaced the carburetor as the primary fuel delivery system used in automotive engines |
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relies on suction to draw fuel into the engine |
Fuel injection has replaced the carburetor as the primary automobile fuel delivery system. The main difference between the fuel injector and the carburetor is that fuel injection atomizes the fuel by forcibly pumping it through a small nozzle under high pressure while a carburetor relies on suction to draw fuel into an accelerated intake air stream.
The firing order of the cylinders in an engine can be found by:
observing the order in which the intake valves open |
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reversing the cylinder number |
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observing the direction in which the intake valves open |
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identifying the cylinder number |
The firing order of the cylinders in an engine is different than the cynlinder numbers and can be found by observing the order in which the intake valves open.
What is the function of the head gasket?
to seal the engine block from the cylinders |
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to seal the brake assembly from external contaminants |
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to connect the transmission to the drive train |
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to seal the exhaust system from the drive train |
A head gasket is a gasket that sits between the engine block and cylinder heads to seal the cylinders to ensure maximum compression and avoid leakage of coolant or engine oil into the cylinders.