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

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

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Automobile Engineering in ME
The rigid suspension is beneficial when

It is desired to have more flexibility in design
Large changes in load make it necessary to have a large suspension stroke
It is desired to improve tyre to ground contact characteristics
It is desired to reduce the unsprung mass

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Automobile Engineering in ME
Incorrect steering axis inclination (S.A.I.) causes

Generation of a braking effect at tight corners
The vehicle to pull to the side of lesser inclination
Tendency to assume toe-out orientation
Poor recovery of the steering wheel after making a turn

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