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oil pump relief valve

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bsfc9

bsfc9

Automotive
Joined
Jan 11, 2004
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12
Location
US
please explain the functioning of the relief valve in a typical wet sump V8 oil pump(BBC). Does increasing spring pressure only affect the max pressure at which the pump goes into relief or does it change the entire pressure "curve"?
 
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It raises the pressure when the valve begins to open.

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The automotive oil pump is positive displacement. If the volume at a given viscosity generates a resultant pressure in excess of the pressure relief setting, flow is shunted to either the suction side of the pump ..or back to the sump.
 
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