Automobile Engineering in ME
The purpose of a cylinder head gasket is to

Prevent engine oil from going into combustion chamber
None of these
Removes impurities from cylinder head lubricating oil
Prevent the combustion gases from leaking from the joint between the cylinder block and the cylinder head

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Automobile Engineering in ME
The fuel pump of a programmed fuel injection (PFI) system operate for two seconds when the ignition is turned to the start position to

Supplies a large amount of fuel and thereby creates a choke effect
Warm up and lubricate the pump
Pressurise the fuel system before the engine is started
Enable the pump's fault diagnosis function to operate

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Automobile Engineering in ME
The function of an oil control orifice is that it

Turns oil into fine mist for spray lubrication
Regulates the pressure of engine oil supplied by the oil pump for the lubrication of cylinder head mechanism and other purposes
Returns cylinder head lubricating oil to the oil pan at high speed
Removes impurities from cylinder head lubricating oil

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Automobile Engineering in ME
The function of a first compression ring (top ring) is that it

Increases the combustion temperature
Maintains a seal and prevents the fuel leakage
Maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber
Creates swirl

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