| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.14 |
| Score | 0% | 63% |
What is the function of the head gasket?
to seal the engine block from the cylinders |
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to connect the transmission to the drive train |
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to seal the brake assembly from external contaminants |
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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.
The wheel __________ is the mounting point for the wheel and tire assembly.
knuckle |
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base |
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shaft |
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hub |
The wheel hub is the mounting point for the wheel and tire assembly. The wheel hub can rotate while being held stable by the steering knuckle which applies the motion of the control arms to the wheels.
Another name for the powertrain control module is the __________ control unit.
transmission |
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electrical |
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engine |
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universal |
The main computer or powertrain control module (PCM) uses pre-programmed software to analyze the input received from sensors and produce output signals to adjust vehicle performance and operation. (Engine control unit (ECU) is another name for the PCM.)
For inline cylinder arrangements in an engine, how are the cylinders numbered?
sequentially 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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alternating from the front of the engine to the back |
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sequentially from the back of the engine to the front |
Inline cylinder arrangements number cylinders sequentially (1, 2, 3, ...) front to rear.
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?
compression |
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power |
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intake |
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exhaust |
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.