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

Removes impurities from cylinder head lubricating oil
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
Turns oil into fine mist for spray lubrication

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Automobile Engineering in ME
The advantage of having a tandem master cylinder arrangement in automobiles is that it

Boosts the brake fluid pressure to reduce the force required to depress the brake pedal
Supplies equal fluid pressure to each line of a divided line brake circuit, thereby preventing the brakes from dragging on one side
Enhances safety by activating the brakes using vacuum pressure in the event of brake fluid loss
Enhances safety by serving two independent lines in a divided line brake circuit

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